mirror of
https://github.com/git/git.git
synced 2024-06-03 04:06:12 +02:00
fbc7290c70
When obtaining lstat information for reparse points, we need to call FindFirstFile() in addition to GetFileInformationEx() to obtain the type of the reparse point (symlink, mount point etc.). However, currently there is no error handling whatsoever if FindFirstFile() fails. Call FindFirstFile() before modifying the stat *buf output parameter and error out if the call fails. Note: The FindFirstFile() return value includes all the data that we get from GetFileAttributesEx(), so we could replace GetFileAttributesEx() with FindFirstFile(). We don't do that because GetFileAttributesEx() is about twice as fast for single files. I.e. we only pay the extra cost of calling FindFirstFile() in the rare case that we encounter a reparse point. Note: The indentation of the remaining reparse point code will be fixed in the next patch. Signed-off-by: Karsten Blees <blees@dcon.de>
3636 lines
93 KiB
C
3636 lines
93 KiB
C
#include "../git-compat-util.h"
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#include "win32.h"
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#include <aclapi.h>
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#include <sddl.h>
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#include <conio.h>
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#include <wchar.h>
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#include "../strbuf.h"
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#include "../run-command.h"
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#include "../abspath.h"
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#include "../alloc.h"
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#include "win32/lazyload.h"
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#include "../config.h"
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#include "../environment.h"
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#include "../trace2.h"
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#include "../symlinks.h"
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#include "../wrapper.h"
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#include "dir.h"
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#include "gettext.h"
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#define SECURITY_WIN32
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#include <sspi.h>
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#include "../write-or-die.h"
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#include "../repository.h"
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#include "win32/fscache.h"
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#define HCAST(type, handle) ((type)(intptr_t)handle)
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static const int delay[] = { 0, 1, 10, 20, 40 };
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void open_in_gdb(void)
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{
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static struct child_process cp = CHILD_PROCESS_INIT;
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extern char *_pgmptr;
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strvec_pushl(&cp.args, "mintty", "gdb", NULL);
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strvec_pushf(&cp.args, "--pid=%d", getpid());
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cp.clean_on_exit = 1;
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if (start_command(&cp) < 0)
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die_errno("Could not start gdb");
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sleep(1);
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}
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int err_win_to_posix(DWORD winerr)
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{
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int error = ENOSYS;
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switch(winerr) {
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case ERROR_ACCESS_DENIED: error = EACCES; break;
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case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
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case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
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case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
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case ERROR_ALREADY_EXISTS: error = EEXIST; break;
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case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
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case ERROR_BAD_COMMAND: error = EIO; break;
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case ERROR_BAD_DEVICE: error = ENODEV; break;
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case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
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case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
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case ERROR_BAD_FORMAT: error = ENOEXEC; break;
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case ERROR_BAD_LENGTH: error = EINVAL; break;
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case ERROR_BAD_PATHNAME: error = ENOENT; break;
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case ERROR_BAD_PIPE: error = EPIPE; break;
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case ERROR_BAD_UNIT: error = ENODEV; break;
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case ERROR_BAD_USERNAME: error = EINVAL; break;
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case ERROR_BROKEN_PIPE: error = EPIPE; break;
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case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
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case ERROR_BUSY: error = EBUSY; break;
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case ERROR_BUSY_DRIVE: error = EBUSY; break;
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case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
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case ERROR_CANNOT_MAKE: error = EACCES; break;
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case ERROR_CANTOPEN: error = EIO; break;
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case ERROR_CANTREAD: error = EIO; break;
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case ERROR_CANTWRITE: error = EIO; break;
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case ERROR_CRC: error = EIO; break;
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case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
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case ERROR_DEVICE_IN_USE: error = EBUSY; break;
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case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
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case ERROR_DIRECTORY: error = EINVAL; break;
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case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
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case ERROR_DISK_CHANGE: error = EIO; break;
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case ERROR_DISK_FULL: error = ENOSPC; break;
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case ERROR_DRIVE_LOCKED: error = EBUSY; break;
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case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
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case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
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case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
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case ERROR_FILE_EXISTS: error = EEXIST; break;
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case ERROR_FILE_INVALID: error = ENODEV; break;
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case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
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case ERROR_GEN_FAILURE: error = EIO; break;
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case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
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case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
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case ERROR_INVALID_ACCESS: error = EACCES; break;
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case ERROR_INVALID_ADDRESS: error = EFAULT; break;
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case ERROR_INVALID_BLOCK: error = EFAULT; break;
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case ERROR_INVALID_DATA: error = EINVAL; break;
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case ERROR_INVALID_DRIVE: error = ENODEV; break;
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case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
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case ERROR_INVALID_FLAGS: error = EINVAL; break;
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case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
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case ERROR_INVALID_HANDLE: error = EBADF; break;
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case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
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case ERROR_INVALID_NAME: error = EINVAL; break;
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case ERROR_INVALID_OWNER: error = EINVAL; break;
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case ERROR_INVALID_PARAMETER: error = EINVAL; break;
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case ERROR_INVALID_PASSWORD: error = EPERM; break;
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case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
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case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
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case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
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case ERROR_INVALID_WORKSTATION: error = EACCES; break;
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case ERROR_IO_DEVICE: error = EIO; break;
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case ERROR_IO_INCOMPLETE: error = EINTR; break;
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case ERROR_LOCKED: error = EBUSY; break;
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case ERROR_LOCK_VIOLATION: error = EACCES; break;
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case ERROR_LOGON_FAILURE: error = EACCES; break;
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case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
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case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
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case ERROR_MORE_DATA: error = EPIPE; break;
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case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
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case ERROR_NOACCESS: error = EFAULT; break;
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case ERROR_NONE_MAPPED: error = EINVAL; break;
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case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
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case ERROR_NOT_READY: error = EAGAIN; break;
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case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
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case ERROR_NO_DATA: error = EPIPE; break;
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case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
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case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
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case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
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case ERROR_OPEN_FAILED: error = EIO; break;
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case ERROR_OPEN_FILES: error = EBUSY; break;
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case ERROR_OPERATION_ABORTED: error = EINTR; break;
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case ERROR_OUTOFMEMORY: error = ENOMEM; break;
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case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
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case ERROR_PATH_BUSY: error = EBUSY; break;
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case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
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case ERROR_PIPE_BUSY: error = EBUSY; break;
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case ERROR_PIPE_CONNECTED: error = EPIPE; break;
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case ERROR_PIPE_LISTENING: error = EPIPE; break;
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case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
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case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
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case ERROR_READ_FAULT: error = EIO; break;
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case ERROR_SEEK: error = EIO; break;
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case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
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case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
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case ERROR_SHARING_VIOLATION: error = EACCES; break;
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case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
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case ERROR_SUCCESS: BUG("err_win_to_posix() called without an error!");
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case ERROR_SWAPERROR: error = ENOENT; break;
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case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
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case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
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case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
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case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
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case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
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case ERROR_WRITE_FAULT: error = EIO; break;
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case ERROR_WRITE_PROTECT: error = EROFS; break;
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}
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return error;
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}
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static inline int is_file_in_use_error(DWORD errcode)
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{
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switch (errcode) {
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case ERROR_SHARING_VIOLATION:
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case ERROR_ACCESS_DENIED:
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return 1;
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}
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return 0;
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}
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static int read_yes_no_answer(void)
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{
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char answer[1024];
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if (fgets(answer, sizeof(answer), stdin)) {
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size_t answer_len = strlen(answer);
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int got_full_line = 0, c;
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/* remove the newline */
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if (answer_len >= 2 && answer[answer_len-2] == '\r') {
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answer[answer_len-2] = '\0';
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got_full_line = 1;
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} else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
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answer[answer_len-1] = '\0';
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got_full_line = 1;
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}
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/* flush the buffer in case we did not get the full line */
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if (!got_full_line)
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while ((c = getchar()) != EOF && c != '\n')
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;
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} else
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/* we could not read, return the
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* default answer which is no */
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return 0;
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if (tolower(answer[0]) == 'y' && !answer[1])
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return 1;
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if (!strncasecmp(answer, "yes", sizeof(answer)))
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return 1;
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if (tolower(answer[0]) == 'n' && !answer[1])
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return 0;
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if (!strncasecmp(answer, "no", sizeof(answer)))
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return 0;
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/* did not find an answer we understand */
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return -1;
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}
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static int ask_yes_no_if_possible(const char *format, ...)
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{
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char question[4096];
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const char *retry_hook;
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va_list args;
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va_start(args, format);
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vsnprintf(question, sizeof(question), format, args);
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va_end(args);
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retry_hook = mingw_getenv("GIT_ASK_YESNO");
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if (retry_hook) {
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struct child_process cmd = CHILD_PROCESS_INIT;
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strvec_pushl(&cmd.args, retry_hook, question, NULL);
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return !run_command(&cmd);
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}
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if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
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return 0;
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while (1) {
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int answer;
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fprintf(stderr, "%s (y/n) ", question);
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if ((answer = read_yes_no_answer()) >= 0)
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return answer;
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fprintf(stderr, "Sorry, I did not understand your answer. "
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"Please type 'y' or 'n'\n");
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}
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}
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/* Windows only */
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enum hide_dotfiles_type {
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HIDE_DOTFILES_FALSE = 0,
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HIDE_DOTFILES_TRUE,
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HIDE_DOTFILES_DOTGITONLY
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};
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static int core_restrict_inherited_handles = -1;
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static enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
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static char *unset_environment_variables;
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int core_fscache;
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int are_long_paths_enabled(void)
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{
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/* default to `false` during initialization */
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static const int fallback = 0;
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static int enabled = -1;
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if (enabled < 0) {
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/* avoid infinite recursion */
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if (!the_repository)
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return fallback;
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if (the_repository->config &&
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the_repository->config->hash_initialized &&
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git_config_get_bool("core.longpaths", &enabled) < 0)
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enabled = 0;
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}
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return enabled < 0 ? fallback : enabled;
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}
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int mingw_core_config(const char *var, const char *value,
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const struct config_context *ctx, void *cb)
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{
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if (!strcmp(var, "core.hidedotfiles")) {
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if (value && !strcasecmp(value, "dotgitonly"))
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hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
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else
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hide_dotfiles = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp(var, "core.fscache")) {
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core_fscache = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp(var, "core.unsetenvvars")) {
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if (!value)
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return config_error_nonbool(var);
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free(unset_environment_variables);
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unset_environment_variables = xstrdup(value);
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return 0;
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}
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if (!strcmp(var, "core.restrictinheritedhandles")) {
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if (value && !strcasecmp(value, "auto"))
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core_restrict_inherited_handles = -1;
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else
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core_restrict_inherited_handles =
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git_config_bool(var, value);
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return 0;
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}
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return 0;
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}
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static inline int is_wdir_sep(wchar_t wchar)
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{
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return wchar == L'/' || wchar == L'\\';
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}
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/* Normalizes NT paths as returned by some low-level APIs. */
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static wchar_t *normalize_ntpath(wchar_t *wbuf)
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{
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int i;
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/* fix absolute path prefixes */
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if (wbuf[0] == '\\') {
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/* strip NT namespace prefixes */
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if (!wcsncmp(wbuf, L"\\??\\", 4) ||
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!wcsncmp(wbuf, L"\\\\?\\", 4))
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wbuf += 4;
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else if (!wcsnicmp(wbuf, L"\\DosDevices\\", 12))
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wbuf += 12;
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/* replace remaining '...UNC\' with '\\' */
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if (!wcsnicmp(wbuf, L"UNC\\", 4)) {
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wbuf += 2;
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*wbuf = '\\';
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}
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}
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/* convert backslashes to slashes */
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for (i = 0; wbuf[i]; i++)
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if (wbuf[i] == '\\')
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wbuf[i] = '/';
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return wbuf;
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}
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int mingw_unlink(const char *pathname)
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{
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int ret, tries = 0;
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wchar_t wpathname[MAX_LONG_PATH];
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if (xutftowcs_long_path(wpathname, pathname) < 0)
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return -1;
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if (DeleteFileW(wpathname))
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return 0;
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/* read-only files cannot be removed */
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_wchmod(wpathname, 0666);
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while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
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if (!is_file_in_use_error(GetLastError()))
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break;
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/*
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* We assume that some other process had the source or
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* destination file open at the wrong moment and retry.
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* In order to give the other process a higher chance to
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* complete its operation, we give up our time slice now.
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* If we have to retry again, we do sleep a bit.
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*/
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Sleep(delay[tries]);
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tries++;
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}
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while (ret == -1 && is_file_in_use_error(GetLastError()) &&
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ask_yes_no_if_possible("Unlink of file '%s' failed. "
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"Should I try again?", pathname))
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ret = _wunlink(wpathname);
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return ret;
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}
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static int is_dir_empty(const wchar_t *wpath)
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{
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WIN32_FIND_DATAW findbuf;
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HANDLE handle;
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wchar_t wbuf[MAX_LONG_PATH + 2];
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wcscpy(wbuf, wpath);
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wcscat(wbuf, L"\\*");
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handle = FindFirstFileW(wbuf, &findbuf);
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if (handle == INVALID_HANDLE_VALUE)
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return GetLastError() == ERROR_NO_MORE_FILES;
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|
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while (!wcscmp(findbuf.cFileName, L".") ||
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!wcscmp(findbuf.cFileName, L".."))
|
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if (!FindNextFileW(handle, &findbuf)) {
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DWORD err = GetLastError();
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FindClose(handle);
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return err == ERROR_NO_MORE_FILES;
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}
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FindClose(handle);
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return 0;
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|
}
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|
|
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int mingw_rmdir(const char *pathname)
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|
{
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int ret, tries = 0;
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wchar_t wpathname[MAX_LONG_PATH];
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struct stat st;
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|
|
|
/*
|
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* Contrary to Linux' `rmdir()`, Windows' _wrmdir() and _rmdir()
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* (and `RemoveDirectoryW()`) will attempt to remove the target of a
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* symbolic link (if it points to a directory).
|
|
*
|
|
* This behavior breaks the assumption of e.g. `remove_path()` which
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* upon successful deletion of a file will attempt to remove its parent
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* directories recursively until failure (which usually happens when
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* the directory is not empty).
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|
*
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* Therefore, before calling `_wrmdir()`, we first check if the path is
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* a symbolic link. If it is, we exit and return the same error as
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* Linux' `rmdir()` would, i.e. `ENOTDIR`.
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|
*/
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if (!mingw_lstat(pathname, &st) && S_ISLNK(st.st_mode)) {
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errno = ENOTDIR;
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return -1;
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|
}
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|
|
|
if (xutftowcs_long_path(wpathname, pathname) < 0)
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return -1;
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|
|
while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
|
|
if (!is_file_in_use_error(GetLastError()))
|
|
errno = err_win_to_posix(GetLastError());
|
|
if (errno != EACCES)
|
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break;
|
|
if (!is_dir_empty(wpathname)) {
|
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errno = ENOTEMPTY;
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break;
|
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}
|
|
/*
|
|
* We assume that some other process had the source or
|
|
* destination file open at the wrong moment and retry.
|
|
* In order to give the other process a higher chance to
|
|
* complete its operation, we give up our time slice now.
|
|
* If we have to retry again, we do sleep a bit.
|
|
*/
|
|
Sleep(delay[tries]);
|
|
tries++;
|
|
}
|
|
while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
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ask_yes_no_if_possible("Deletion of directory '%s' failed. "
|
|
"Should I try again?", pathname))
|
|
ret = _wrmdir(wpathname);
|
|
if (!ret)
|
|
invalidate_lstat_cache();
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return ret;
|
|
}
|
|
|
|
static inline int needs_hiding(const char *path)
|
|
{
|
|
const char *basename;
|
|
|
|
if (hide_dotfiles == HIDE_DOTFILES_FALSE)
|
|
return 0;
|
|
|
|
/* We cannot use basename(), as it would remove trailing slashes */
|
|
win32_skip_dos_drive_prefix((char **)&path);
|
|
if (!*path)
|
|
return 0;
|
|
|
|
for (basename = path; *path; path++)
|
|
if (is_dir_sep(*path)) {
|
|
do {
|
|
path++;
|
|
} while (is_dir_sep(*path));
|
|
/* ignore trailing slashes */
|
|
if (*path)
|
|
basename = path;
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (hide_dotfiles == HIDE_DOTFILES_TRUE)
|
|
return *basename == '.';
|
|
|
|
assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY);
|
|
return !strncasecmp(".git", basename, 4) &&
|
|
(!basename[4] || is_dir_sep(basename[4]));
|
|
}
|
|
|
|
static int set_hidden_flag(const wchar_t *path, int set)
|
|
{
|
|
DWORD original = GetFileAttributesW(path), modified;
|
|
if (set)
|
|
modified = original | FILE_ATTRIBUTE_HIDDEN;
|
|
else
|
|
modified = original & ~FILE_ATTRIBUTE_HIDDEN;
|
|
if (original == modified || SetFileAttributesW(path, modified))
|
|
return 0;
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
int mingw_mkdir(const char *path, int mode)
|
|
{
|
|
int ret;
|
|
wchar_t wpath[MAX_LONG_PATH];
|
|
|
|
if (!is_valid_win32_path(path, 0)) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
/* CreateDirectoryW path limit is 248 (MAX_PATH - 8.3 file name) */
|
|
if (xutftowcs_path_ex(wpath, path, MAX_LONG_PATH, -1, 248,
|
|
are_long_paths_enabled()) < 0)
|
|
return -1;
|
|
|
|
ret = _wmkdir(wpath);
|
|
if (!ret && needs_hiding(path))
|
|
return set_hidden_flag(wpath, 1);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
|
|
* is documented in [1] as opening a writable file handle in append mode.
|
|
* (It is believed that) this is atomic since it is maintained by the
|
|
* kernel unlike the O_APPEND flag which is racily maintained by the CRT.
|
|
*
|
|
* [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
|
|
*
|
|
* This trick does not appear to work for named pipes. Instead it creates
|
|
* a named pipe client handle that cannot be written to. Callers should
|
|
* just use the regular _wopen() for them. (And since client handle gets
|
|
* bound to a unique server handle, it isn't really an issue.)
|
|
*/
|
|
static int mingw_open_append(wchar_t const *wfilename, int oflags, ...)
|
|
{
|
|
HANDLE handle;
|
|
int fd;
|
|
DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING;
|
|
|
|
/* only these flags are supported */
|
|
if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND))
|
|
return errno = ENOSYS, -1;
|
|
|
|
/*
|
|
* FILE_SHARE_WRITE is required to permit child processes
|
|
* to append to the file.
|
|
*/
|
|
handle = CreateFileW(wfilename, FILE_APPEND_DATA,
|
|
FILE_SHARE_WRITE | FILE_SHARE_READ,
|
|
NULL, create, FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (handle == INVALID_HANDLE_VALUE) {
|
|
DWORD err = GetLastError();
|
|
|
|
/*
|
|
* Some network storage solutions (e.g. Isilon) might return
|
|
* ERROR_INVALID_PARAMETER instead of expected error
|
|
* ERROR_PATH_NOT_FOUND, which results in an unknown error. If
|
|
* so, let's turn the error to ERROR_PATH_NOT_FOUND instead.
|
|
*/
|
|
if (err == ERROR_INVALID_PARAMETER)
|
|
err = ERROR_PATH_NOT_FOUND;
|
|
|
|
errno = err_win_to_posix(err);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* No O_APPEND here, because the CRT uses it only to reset the
|
|
* file pointer to EOF before each write(); but that is not
|
|
* necessary (and may lead to races) for a file created with
|
|
* FILE_APPEND_DATA.
|
|
*/
|
|
fd = _open_osfhandle((intptr_t)handle, O_BINARY);
|
|
if (fd < 0)
|
|
CloseHandle(handle);
|
|
return fd;
|
|
}
|
|
|
|
/*
|
|
* Does the pathname map to the local named pipe filesystem?
|
|
* That is, does it have a "//./pipe/" prefix?
|
|
*/
|
|
static int is_local_named_pipe_path(const char *filename)
|
|
{
|
|
return (is_dir_sep(filename[0]) &&
|
|
is_dir_sep(filename[1]) &&
|
|
filename[2] == '.' &&
|
|
is_dir_sep(filename[3]) &&
|
|
!strncasecmp(filename+4, "pipe", 4) &&
|
|
is_dir_sep(filename[8]) &&
|
|
filename[9]);
|
|
}
|
|
|
|
int mingw_open (const char *filename, int oflags, ...)
|
|
{
|
|
static int append_atomically = -1;
|
|
typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...);
|
|
va_list args;
|
|
unsigned mode;
|
|
int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL);
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
open_fn_t open_fn;
|
|
|
|
va_start(args, oflags);
|
|
mode = va_arg(args, int);
|
|
va_end(args);
|
|
|
|
if (!is_valid_win32_path(filename, !create)) {
|
|
errno = create ? EINVAL : ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Only set append_atomically to default value(1) when repo is initialized
|
|
* and fail to get config value
|
|
*/
|
|
if (append_atomically < 0 && the_repository && the_repository->commondir &&
|
|
git_config_get_bool("windows.appendatomically", &append_atomically))
|
|
append_atomically = 1;
|
|
|
|
if (append_atomically && (oflags & O_APPEND) &&
|
|
!is_local_named_pipe_path(filename))
|
|
open_fn = mingw_open_append;
|
|
else
|
|
open_fn = _wopen;
|
|
|
|
if (filename && !strcmp(filename, "/dev/null"))
|
|
wcscpy(wfilename, L"nul");
|
|
else if (xutftowcs_long_path(wfilename, filename) < 0)
|
|
return -1;
|
|
|
|
fd = open_fn(wfilename, oflags, mode);
|
|
|
|
if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
|
|
DWORD attrs = GetFileAttributesW(wfilename);
|
|
if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
|
|
errno = EISDIR;
|
|
}
|
|
if ((oflags & O_CREAT) && needs_hiding(filename)) {
|
|
/*
|
|
* Internally, _wopen() uses the CreateFile() API which errors
|
|
* out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
|
|
* specified and an already existing file's attributes do not
|
|
* match *exactly*. As there is no mode or flag we can set that
|
|
* would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
|
|
* again *without* the O_CREAT flag (that corresponds to the
|
|
* CREATE_ALWAYS flag of CreateFile()).
|
|
*/
|
|
if (fd < 0 && errno == EACCES)
|
|
fd = open_fn(wfilename, oflags & ~O_CREAT, mode);
|
|
if (fd >= 0 && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
static BOOL WINAPI ctrl_ignore(DWORD type)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
#undef fgetc
|
|
int mingw_fgetc(FILE *stream)
|
|
{
|
|
int ch;
|
|
if (!isatty(_fileno(stream)))
|
|
return fgetc(stream);
|
|
|
|
SetConsoleCtrlHandler(ctrl_ignore, TRUE);
|
|
while (1) {
|
|
ch = fgetc(stream);
|
|
if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
|
|
break;
|
|
|
|
/* Ctrl+C was pressed, simulate SIGINT and retry */
|
|
mingw_raise(SIGINT);
|
|
}
|
|
SetConsoleCtrlHandler(ctrl_ignore, FALSE);
|
|
return ch;
|
|
}
|
|
|
|
#undef fopen
|
|
FILE *mingw_fopen (const char *filename, const char *otype)
|
|
{
|
|
int hide = needs_hiding(filename);
|
|
FILE *file;
|
|
wchar_t wfilename[MAX_LONG_PATH], wotype[4];
|
|
if (filename && !strcmp(filename, "/dev/null"))
|
|
wcscpy(wfilename, L"nul");
|
|
else if (!is_valid_win32_path(filename, 1)) {
|
|
int create = otype && strchr(otype, 'w');
|
|
errno = create ? EINVAL : ENOENT;
|
|
return NULL;
|
|
} else if (xutftowcs_long_path(wfilename, filename) < 0)
|
|
return NULL;
|
|
|
|
if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
|
return NULL;
|
|
|
|
if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
|
|
error("could not unhide %s", filename);
|
|
return NULL;
|
|
}
|
|
file = _wfopen(wfilename, wotype);
|
|
if (!file && GetLastError() == ERROR_INVALID_NAME)
|
|
errno = ENOENT;
|
|
if (file && hide && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
return file;
|
|
}
|
|
|
|
FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
|
|
{
|
|
int hide = needs_hiding(filename);
|
|
FILE *file;
|
|
wchar_t wfilename[MAX_LONG_PATH], wotype[4];
|
|
if (filename && !strcmp(filename, "/dev/null"))
|
|
wcscpy(wfilename, L"nul");
|
|
else if (!is_valid_win32_path(filename, 1)) {
|
|
int create = otype && strchr(otype, 'w');
|
|
errno = create ? EINVAL : ENOENT;
|
|
return NULL;
|
|
} else if (xutftowcs_long_path(wfilename, filename) < 0)
|
|
return NULL;
|
|
|
|
if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
|
return NULL;
|
|
|
|
if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
|
|
error("could not unhide %s", filename);
|
|
return NULL;
|
|
}
|
|
file = _wfreopen(wfilename, wotype, stream);
|
|
if (file && hide && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
return file;
|
|
}
|
|
|
|
#undef fflush
|
|
int mingw_fflush(FILE *stream)
|
|
{
|
|
int ret = fflush(stream);
|
|
|
|
/*
|
|
* write() is used behind the scenes of stdio output functions.
|
|
* Since git code does not check for errors after each stdio write
|
|
* operation, it can happen that write() is called by a later
|
|
* stdio function even if an earlier write() call failed. In the
|
|
* case of a pipe whose readable end was closed, only the first
|
|
* call to write() reports EPIPE on Windows. Subsequent write()
|
|
* calls report EINVAL. It is impossible to notice whether this
|
|
* fflush invocation triggered such a case, therefore, we have to
|
|
* catch all EINVAL errors whole-sale.
|
|
*/
|
|
if (ret && errno == EINVAL)
|
|
errno = EPIPE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#undef write
|
|
ssize_t mingw_write(int fd, const void *buf, size_t len)
|
|
{
|
|
ssize_t result = write(fd, buf, len);
|
|
|
|
if (result < 0 && (errno == EINVAL || errno == EBADF || errno == ENOSPC) && buf) {
|
|
int orig = errno;
|
|
|
|
/* check if fd is a pipe */
|
|
HANDLE h = (HANDLE) _get_osfhandle(fd);
|
|
if (GetFileType(h) != FILE_TYPE_PIPE) {
|
|
if (orig == EINVAL) {
|
|
wchar_t path[MAX_LONG_PATH];
|
|
DWORD ret = GetFinalPathNameByHandleW(h, path,
|
|
ARRAY_SIZE(path), 0);
|
|
UINT drive_type = ret > 0 && ret < ARRAY_SIZE(path) ?
|
|
GetDriveTypeW(path) : DRIVE_UNKNOWN;
|
|
|
|
/*
|
|
* The default atomic append causes such an error on
|
|
* network file systems, in such a case, it should be
|
|
* turned off via config.
|
|
*
|
|
* `drive_type` of UNC path: DRIVE_NO_ROOT_DIR
|
|
*/
|
|
if (DRIVE_NO_ROOT_DIR == drive_type || DRIVE_REMOTE == drive_type)
|
|
warning("invalid write operation detected; you may try:\n"
|
|
"\n\tgit config windows.appendAtomically false");
|
|
}
|
|
|
|
errno = orig;
|
|
} else if (orig == EINVAL || errno == EBADF)
|
|
errno = EPIPE;
|
|
else {
|
|
DWORD buf_size;
|
|
|
|
if (!GetNamedPipeInfo(h, NULL, NULL, &buf_size, NULL))
|
|
buf_size = 4096;
|
|
if (len > buf_size)
|
|
return write(fd, buf, buf_size);
|
|
errno = orig;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int mingw_access(const char *filename, int mode)
|
|
{
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
if (!strcmp("nul", filename) || !strcmp("/dev/null", filename))
|
|
return 0;
|
|
if (xutftowcs_long_path(wfilename, filename) < 0)
|
|
return -1;
|
|
/* X_OK is not supported by the MSVCRT version */
|
|
return _waccess(wfilename, mode & ~X_OK);
|
|
}
|
|
|
|
/* cached length of current directory for handle_long_path */
|
|
static int current_directory_len = 0;
|
|
|
|
int mingw_chdir(const char *dirname)
|
|
{
|
|
int result;
|
|
wchar_t wdirname[MAX_LONG_PATH];
|
|
if (xutftowcs_long_path(wdirname, dirname) < 0)
|
|
return -1;
|
|
result = _wchdir(wdirname);
|
|
current_directory_len = GetCurrentDirectoryW(0, NULL);
|
|
return result;
|
|
}
|
|
|
|
int mingw_chmod(const char *filename, int mode)
|
|
{
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
if (xutftowcs_long_path(wfilename, filename) < 0)
|
|
return -1;
|
|
return _wchmod(wfilename, mode);
|
|
}
|
|
|
|
/**
|
|
* Verifies that safe_create_leading_directories() would succeed.
|
|
*/
|
|
static int has_valid_directory_prefix(wchar_t *wfilename)
|
|
{
|
|
int n = wcslen(wfilename);
|
|
|
|
while (n > 0) {
|
|
wchar_t c = wfilename[--n];
|
|
DWORD attributes;
|
|
|
|
if (!is_dir_sep(c))
|
|
continue;
|
|
|
|
wfilename[n] = L'\0';
|
|
attributes = GetFileAttributesW(wfilename);
|
|
wfilename[n] = c;
|
|
if (attributes &
|
|
(FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_DEVICE))
|
|
return 1;
|
|
if (attributes == INVALID_FILE_ATTRIBUTES)
|
|
switch (GetLastError()) {
|
|
case ERROR_PATH_NOT_FOUND:
|
|
continue;
|
|
case ERROR_FILE_NOT_FOUND:
|
|
/* This implies parent directory exists. */
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int mingw_lstat(const char *file_name, struct stat *buf)
|
|
{
|
|
WIN32_FILE_ATTRIBUTE_DATA fdata;
|
|
WIN32_FIND_DATAW findbuf = { 0 };
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
int wlen = xutftowcs_long_path(wfilename, file_name);
|
|
if (wlen < 0)
|
|
return -1;
|
|
|
|
/* strip trailing '/', or GetFileAttributes will fail */
|
|
while (wlen && is_dir_sep(wfilename[wlen - 1]))
|
|
wfilename[--wlen] = 0;
|
|
if (!wlen) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
|
|
/* for reparse points, use FindFirstFile to get the reparse tag */
|
|
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
|
|
HANDLE handle = FindFirstFileW(wfilename, &findbuf);
|
|
if (handle == INVALID_HANDLE_VALUE)
|
|
goto error;
|
|
FindClose(handle);
|
|
}
|
|
buf->st_ino = 0;
|
|
buf->st_gid = 0;
|
|
buf->st_uid = 0;
|
|
buf->st_nlink = 1;
|
|
buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
|
|
buf->st_size = fdata.nFileSizeLow |
|
|
(((off_t)fdata.nFileSizeHigh)<<32);
|
|
buf->st_dev = buf->st_rdev = 0; /* not used by Git */
|
|
filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
|
|
filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
|
|
filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
|
|
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
|
|
if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
|
|
(findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
|
|
buf->st_mode = S_IFLNK | S_IREAD;
|
|
if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
|
|
buf->st_mode |= S_IWRITE;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
error:
|
|
switch (GetLastError()) {
|
|
case ERROR_ACCESS_DENIED:
|
|
case ERROR_SHARING_VIOLATION:
|
|
case ERROR_LOCK_VIOLATION:
|
|
case ERROR_SHARING_BUFFER_EXCEEDED:
|
|
errno = EACCES;
|
|
break;
|
|
case ERROR_BUFFER_OVERFLOW:
|
|
errno = ENAMETOOLONG;
|
|
break;
|
|
case ERROR_NOT_ENOUGH_MEMORY:
|
|
errno = ENOMEM;
|
|
break;
|
|
case ERROR_PATH_NOT_FOUND:
|
|
if (!has_valid_directory_prefix(wfilename)) {
|
|
errno = ENOTDIR;
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
default:
|
|
errno = ENOENT;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int (*lstat)(const char *file_name, struct stat *buf) = mingw_lstat;
|
|
|
|
static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
|
|
{
|
|
BY_HANDLE_FILE_INFORMATION fdata;
|
|
|
|
if (!GetFileInformationByHandle(hnd, &fdata)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
buf->st_ino = 0;
|
|
buf->st_gid = 0;
|
|
buf->st_uid = 0;
|
|
buf->st_nlink = 1;
|
|
buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
|
|
buf->st_size = fdata.nFileSizeLow |
|
|
(((off_t)fdata.nFileSizeHigh)<<32);
|
|
buf->st_dev = buf->st_rdev = 0; /* not used by Git */
|
|
filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
|
|
filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
|
|
filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
|
|
return 0;
|
|
}
|
|
|
|
int mingw_stat(const char *file_name, struct stat *buf)
|
|
{
|
|
wchar_t wfile_name[MAX_LONG_PATH];
|
|
HANDLE hnd;
|
|
int result;
|
|
|
|
/* open the file and let Windows resolve the links */
|
|
if (xutftowcs_long_path(wfile_name, file_name) < 0)
|
|
return -1;
|
|
hnd = CreateFileW(wfile_name, 0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
|
|
if (hnd == INVALID_HANDLE_VALUE) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
result = get_file_info_by_handle(hnd, buf);
|
|
CloseHandle(hnd);
|
|
return result;
|
|
}
|
|
|
|
int mingw_fstat(int fd, struct stat *buf)
|
|
{
|
|
HANDLE fh = (HANDLE)_get_osfhandle(fd);
|
|
DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE;
|
|
|
|
switch (type) {
|
|
case FILE_TYPE_DISK:
|
|
return get_file_info_by_handle(fh, buf);
|
|
|
|
case FILE_TYPE_CHAR:
|
|
case FILE_TYPE_PIPE:
|
|
/* initialize stat fields */
|
|
memset(buf, 0, sizeof(*buf));
|
|
buf->st_nlink = 1;
|
|
|
|
if (type == FILE_TYPE_CHAR) {
|
|
buf->st_mode = _S_IFCHR;
|
|
} else {
|
|
buf->st_mode = _S_IFIFO;
|
|
if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL))
|
|
buf->st_size = avail;
|
|
}
|
|
return 0;
|
|
|
|
default:
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static inline void time_t_to_filetime(time_t t, FILETIME *ft)
|
|
{
|
|
long long winTime = t * 10000000LL + 116444736000000000LL;
|
|
ft->dwLowDateTime = winTime;
|
|
ft->dwHighDateTime = winTime >> 32;
|
|
}
|
|
|
|
int mingw_utime (const char *file_name, const struct utimbuf *times)
|
|
{
|
|
FILETIME mft, aft;
|
|
int rc;
|
|
DWORD attrs;
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
HANDLE osfilehandle;
|
|
|
|
if (xutftowcs_long_path(wfilename, file_name) < 0)
|
|
return -1;
|
|
|
|
/* must have write permission */
|
|
attrs = GetFileAttributesW(wfilename);
|
|
if (attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_READONLY)) {
|
|
/* ignore errors here; open() will report them */
|
|
SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
|
|
}
|
|
|
|
osfilehandle = CreateFileW(wfilename,
|
|
FILE_WRITE_ATTRIBUTES,
|
|
0 /*FileShare.None*/,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
(attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_DIRECTORY)) ?
|
|
FILE_FLAG_BACKUP_SEMANTICS : 0,
|
|
NULL);
|
|
if (osfilehandle == INVALID_HANDLE_VALUE) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
rc = -1;
|
|
goto revert_attrs;
|
|
}
|
|
|
|
if (times) {
|
|
time_t_to_filetime(times->modtime, &mft);
|
|
time_t_to_filetime(times->actime, &aft);
|
|
} else {
|
|
GetSystemTimeAsFileTime(&mft);
|
|
aft = mft;
|
|
}
|
|
|
|
if (!SetFileTime(osfilehandle, NULL, &aft, &mft)) {
|
|
errno = EINVAL;
|
|
rc = -1;
|
|
} else
|
|
rc = 0;
|
|
|
|
if (osfilehandle != INVALID_HANDLE_VALUE)
|
|
CloseHandle(osfilehandle);
|
|
|
|
revert_attrs:
|
|
if (attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_READONLY)) {
|
|
/* ignore errors again */
|
|
SetFileAttributesW(wfilename, attrs);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
#undef strftime
|
|
size_t mingw_strftime(char *s, size_t max,
|
|
const char *format, const struct tm *tm)
|
|
{
|
|
/* a pointer to the original strftime in case we can't find the UCRT version */
|
|
static size_t (*fallback)(char *, size_t, const char *, const struct tm *) = strftime;
|
|
size_t ret;
|
|
DECLARE_PROC_ADDR(ucrtbase.dll, size_t, __cdecl, strftime, char *, size_t,
|
|
const char *, const struct tm *);
|
|
|
|
if (INIT_PROC_ADDR(strftime))
|
|
ret = strftime(s, max, format, tm);
|
|
else
|
|
ret = fallback(s, max, format, tm);
|
|
|
|
if (!ret && errno == EINVAL)
|
|
die("invalid strftime format: '%s'", format);
|
|
return ret;
|
|
}
|
|
|
|
unsigned int sleep (unsigned int seconds)
|
|
{
|
|
Sleep(seconds*1000);
|
|
return 0;
|
|
}
|
|
|
|
char *mingw_mktemp(char *template)
|
|
{
|
|
wchar_t wtemplate[MAX_PATH];
|
|
int offset = 0;
|
|
|
|
/* we need to return the path, thus no long paths here! */
|
|
if (xutftowcs_path(wtemplate, template) < 0)
|
|
return NULL;
|
|
|
|
if (is_dir_sep(template[0]) && !is_dir_sep(template[1]) &&
|
|
iswalpha(wtemplate[0]) && wtemplate[1] == L':') {
|
|
/* We have an absolute path missing the drive prefix */
|
|
offset = 2;
|
|
}
|
|
if (!_wmktemp(wtemplate))
|
|
return NULL;
|
|
if (xwcstoutf(template, wtemplate + offset, strlen(template) + 1) < 0)
|
|
return NULL;
|
|
return template;
|
|
}
|
|
|
|
int mkstemp(char *template)
|
|
{
|
|
return git_mkstemp_mode(template, 0600);
|
|
}
|
|
|
|
int gettimeofday(struct timeval *tv, void *tz)
|
|
{
|
|
FILETIME ft;
|
|
long long hnsec;
|
|
|
|
GetSystemTimeAsFileTime(&ft);
|
|
hnsec = filetime_to_hnsec(&ft);
|
|
tv->tv_sec = hnsec / 10000000;
|
|
tv->tv_usec = (hnsec % 10000000) / 10;
|
|
return 0;
|
|
}
|
|
|
|
int pipe(int filedes[2])
|
|
{
|
|
HANDLE h[2];
|
|
|
|
/* this creates non-inheritable handles */
|
|
if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
|
|
if (filedes[0] < 0) {
|
|
CloseHandle(h[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
|
|
if (filedes[1] < 0) {
|
|
close(filedes[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifndef __MINGW64__
|
|
struct tm *gmtime_r(const time_t *timep, struct tm *result)
|
|
{
|
|
if (gmtime_s(result, timep) == 0)
|
|
return result;
|
|
return NULL;
|
|
}
|
|
|
|
struct tm *localtime_r(const time_t *timep, struct tm *result)
|
|
{
|
|
if (localtime_s(result, timep) == 0)
|
|
return result;
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
char *mingw_strbuf_realpath(struct strbuf *resolved, const char *path)
|
|
{
|
|
wchar_t wpath[MAX_PATH];
|
|
HANDLE h;
|
|
DWORD ret;
|
|
int len;
|
|
const char *last_component = NULL;
|
|
char *append = NULL;
|
|
|
|
if (xutftowcs_path(wpath, path) < 0)
|
|
return NULL;
|
|
|
|
h = CreateFileW(wpath, 0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
|
|
|
|
/*
|
|
* strbuf_realpath() allows the last path component to not exist. If
|
|
* that is the case, now it's time to try without last component.
|
|
*/
|
|
if (h == INVALID_HANDLE_VALUE &&
|
|
GetLastError() == ERROR_FILE_NOT_FOUND) {
|
|
/* cut last component off of `wpath` */
|
|
wchar_t *p = wpath + wcslen(wpath);
|
|
|
|
while (p != wpath)
|
|
if (*(--p) == L'/' || *p == L'\\')
|
|
break; /* found start of last component */
|
|
|
|
if (p != wpath && (last_component = find_last_dir_sep(path))) {
|
|
append = xstrdup(last_component + 1); /* skip directory separator */
|
|
/*
|
|
* Do not strip the trailing slash at the drive root, otherwise
|
|
* the path would be e.g. `C:` (which resolves to the
|
|
* _current_ directory on that drive).
|
|
*/
|
|
if (p[-1] == L':')
|
|
p[1] = L'\0';
|
|
else
|
|
*p = L'\0';
|
|
h = CreateFileW(wpath, 0, FILE_SHARE_READ |
|
|
FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|
NULL, OPEN_EXISTING,
|
|
FILE_FLAG_BACKUP_SEMANTICS, NULL);
|
|
}
|
|
}
|
|
|
|
if (h == INVALID_HANDLE_VALUE) {
|
|
realpath_failed:
|
|
FREE_AND_NULL(append);
|
|
return NULL;
|
|
}
|
|
|
|
ret = GetFinalPathNameByHandleW(h, wpath, ARRAY_SIZE(wpath), 0);
|
|
CloseHandle(h);
|
|
if (!ret || ret >= ARRAY_SIZE(wpath))
|
|
goto realpath_failed;
|
|
|
|
len = wcslen(wpath) * 3;
|
|
strbuf_grow(resolved, len);
|
|
len = xwcstoutf(resolved->buf, normalize_ntpath(wpath), len);
|
|
if (len < 0)
|
|
goto realpath_failed;
|
|
resolved->len = len;
|
|
|
|
if (append) {
|
|
/* Use forward-slash, like `normalize_ntpath()` */
|
|
strbuf_complete(resolved, '/');
|
|
strbuf_addstr(resolved, append);
|
|
FREE_AND_NULL(append);
|
|
}
|
|
|
|
return resolved->buf;
|
|
|
|
}
|
|
|
|
char *mingw_getcwd(char *pointer, int len)
|
|
{
|
|
wchar_t cwd[MAX_PATH], wpointer[MAX_PATH];
|
|
DWORD ret = GetCurrentDirectoryW(ARRAY_SIZE(cwd), cwd);
|
|
HANDLE hnd;
|
|
|
|
if (!ret || ret >= ARRAY_SIZE(cwd)) {
|
|
errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError());
|
|
return NULL;
|
|
}
|
|
hnd = CreateFileW(cwd, 0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
|
|
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
|
|
if (hnd != INVALID_HANDLE_VALUE) {
|
|
ret = GetFinalPathNameByHandleW(hnd, wpointer, ARRAY_SIZE(wpointer), 0);
|
|
CloseHandle(hnd);
|
|
if (!ret || ret >= ARRAY_SIZE(wpointer)) {
|
|
ret = GetLongPathNameW(cwd, wpointer, ARRAY_SIZE(wpointer));
|
|
if (!ret || ret >= ARRAY_SIZE(wpointer)) {
|
|
errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError());
|
|
return NULL;
|
|
}
|
|
}
|
|
if (xwcstoutf(pointer, normalize_ntpath(wpointer), len) < 0)
|
|
return NULL;
|
|
return pointer;
|
|
}
|
|
if (GetFileAttributesW(cwd) == INVALID_FILE_ATTRIBUTES) {
|
|
errno = ENOENT;
|
|
return NULL;
|
|
}
|
|
if (xwcstoutf(pointer, cwd, len) < 0)
|
|
return NULL;
|
|
convert_slashes(pointer);
|
|
return pointer;
|
|
}
|
|
|
|
/*
|
|
* See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
|
|
* https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
|
|
*/
|
|
static const char *quote_arg_msvc(const char *arg)
|
|
{
|
|
/* count chars to quote */
|
|
int len = 0, n = 0;
|
|
int force_quotes = 0;
|
|
char *q, *d;
|
|
const char *p = arg;
|
|
if (!*p) force_quotes = 1;
|
|
while (*p) {
|
|
if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
|
|
force_quotes = 1;
|
|
else if (*p == '"')
|
|
n++;
|
|
else if (*p == '\\') {
|
|
int count = 0;
|
|
while (*p == '\\') {
|
|
count++;
|
|
p++;
|
|
len++;
|
|
}
|
|
if (*p == '"' || !*p)
|
|
n += count*2 + 1;
|
|
continue;
|
|
}
|
|
len++;
|
|
p++;
|
|
}
|
|
if (!force_quotes && n == 0)
|
|
return arg;
|
|
|
|
/* insert \ where necessary */
|
|
d = q = xmalloc(st_add3(len, n, 3));
|
|
*d++ = '"';
|
|
while (*arg) {
|
|
if (*arg == '"')
|
|
*d++ = '\\';
|
|
else if (*arg == '\\') {
|
|
int count = 0;
|
|
while (*arg == '\\') {
|
|
count++;
|
|
*d++ = *arg++;
|
|
}
|
|
if (*arg == '"' || !*arg) {
|
|
while (count-- > 0)
|
|
*d++ = '\\';
|
|
/* don't escape the surrounding end quote */
|
|
if (!*arg)
|
|
break;
|
|
*d++ = '\\';
|
|
}
|
|
}
|
|
*d++ = *arg++;
|
|
}
|
|
*d++ = '"';
|
|
*d++ = '\0';
|
|
return q;
|
|
}
|
|
|
|
#include "quote.h"
|
|
|
|
static const char *quote_arg_msys2(const char *arg)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
const char *p2 = arg, *p;
|
|
|
|
for (p = arg; *p; p++) {
|
|
int ws = isspace(*p);
|
|
if (!ws && *p != '\\' && *p != '"' && *p != '{' && *p != '\'' &&
|
|
*p != '?' && *p != '*' && *p != '~')
|
|
continue;
|
|
if (!buf.len)
|
|
strbuf_addch(&buf, '"');
|
|
if (p != p2)
|
|
strbuf_add(&buf, p2, p - p2);
|
|
if (*p == '\\' || *p == '"')
|
|
strbuf_addch(&buf, '\\');
|
|
p2 = p;
|
|
}
|
|
|
|
if (p == arg)
|
|
strbuf_addch(&buf, '"');
|
|
else if (!buf.len)
|
|
return arg;
|
|
else
|
|
strbuf_add(&buf, p2, p - p2);
|
|
|
|
strbuf_addch(&buf, '"');
|
|
return strbuf_detach(&buf, 0);
|
|
}
|
|
|
|
static const char *parse_interpreter(const char *cmd)
|
|
{
|
|
static char buf[MAX_PATH];
|
|
char *p, *opt;
|
|
int n, fd;
|
|
|
|
/* don't even try a .exe */
|
|
n = strlen(cmd);
|
|
if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
|
|
return NULL;
|
|
|
|
fd = open(cmd, O_RDONLY);
|
|
if (fd < 0)
|
|
return NULL;
|
|
n = read(fd, buf, sizeof(buf)-1);
|
|
close(fd);
|
|
if (n < 4) /* at least '#!/x' and not error */
|
|
return NULL;
|
|
|
|
if (buf[0] != '#' || buf[1] != '!')
|
|
return NULL;
|
|
buf[n] = '\0';
|
|
p = buf + strcspn(buf, "\r\n");
|
|
if (!*p)
|
|
return NULL;
|
|
|
|
*p = '\0';
|
|
if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
|
|
return NULL;
|
|
/* strip options */
|
|
if ((opt = strchr(p+1, ' ')))
|
|
*opt = '\0';
|
|
return p+1;
|
|
}
|
|
|
|
/*
|
|
* exe_only means that we only want to detect .exe files, but not scripts
|
|
* (which do not have an extension)
|
|
*/
|
|
static char *lookup_prog(const char *dir, int dirlen, const char *cmd,
|
|
int isexe, int exe_only)
|
|
{
|
|
char path[MAX_PATH];
|
|
wchar_t wpath[MAX_PATH];
|
|
snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd);
|
|
|
|
if (xutftowcs_path(wpath, path) < 0)
|
|
return NULL;
|
|
|
|
if (!isexe && _waccess(wpath, F_OK) == 0)
|
|
return xstrdup(path);
|
|
wpath[wcslen(wpath)-4] = '\0';
|
|
if ((!exe_only || isexe) && _waccess(wpath, F_OK) == 0) {
|
|
if (!(GetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY)) {
|
|
path[strlen(path)-4] = '\0';
|
|
return xstrdup(path);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Determines the absolute path of cmd using the split path in path.
|
|
* If cmd contains a slash or backslash, no lookup is performed.
|
|
*/
|
|
static char *path_lookup(const char *cmd, int exe_only)
|
|
{
|
|
const char *path;
|
|
char *prog = NULL;
|
|
int len = strlen(cmd);
|
|
int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
|
|
|
|
if (strpbrk(cmd, "/\\"))
|
|
return xstrdup(cmd);
|
|
|
|
path = mingw_getenv("PATH");
|
|
if (!path)
|
|
return NULL;
|
|
|
|
while (!prog) {
|
|
const char *sep = strchrnul(path, ';');
|
|
int dirlen = sep - path;
|
|
if (dirlen)
|
|
prog = lookup_prog(path, dirlen, cmd, isexe, exe_only);
|
|
if (!*sep)
|
|
break;
|
|
path = sep + 1;
|
|
}
|
|
|
|
return prog;
|
|
}
|
|
|
|
char *mingw_locate_in_PATH(const char *cmd)
|
|
{
|
|
return path_lookup(cmd, 0);
|
|
}
|
|
|
|
static const wchar_t *wcschrnul(const wchar_t *s, wchar_t c)
|
|
{
|
|
while (*s && *s != c)
|
|
s++;
|
|
return s;
|
|
}
|
|
|
|
/* Compare only keys */
|
|
static int wenvcmp(const void *a, const void *b)
|
|
{
|
|
wchar_t *p = *(wchar_t **)a, *q = *(wchar_t **)b;
|
|
size_t p_len, q_len;
|
|
|
|
/* Find the keys */
|
|
p_len = wcschrnul(p, L'=') - p;
|
|
q_len = wcschrnul(q, L'=') - q;
|
|
|
|
/* If the length differs, include the shorter key's NUL */
|
|
if (p_len < q_len)
|
|
p_len++;
|
|
else if (p_len > q_len)
|
|
p_len = q_len + 1;
|
|
|
|
return _wcsnicmp(p, q, p_len);
|
|
}
|
|
|
|
/*
|
|
* Build an environment block combining the inherited environment
|
|
* merged with the given list of settings.
|
|
*
|
|
* Values of the form "KEY=VALUE" in deltaenv override inherited values.
|
|
* Values of the form "KEY" in deltaenv delete inherited values.
|
|
*
|
|
* Multiple entries in deltaenv for the same key are explicitly allowed.
|
|
*
|
|
* We return a contiguous block of UNICODE strings with a final trailing
|
|
* zero word.
|
|
*/
|
|
static wchar_t *make_environment_block(char **deltaenv)
|
|
{
|
|
wchar_t *wenv = GetEnvironmentStringsW(), *wdeltaenv, *result, *p;
|
|
size_t wlen, s, delta_size, size;
|
|
|
|
wchar_t **array = NULL;
|
|
size_t alloc = 0, nr = 0, i;
|
|
|
|
size = 1; /* for extra NUL at the end */
|
|
|
|
/* If there is no deltaenv to apply, simply return a copy. */
|
|
if (!deltaenv || !*deltaenv) {
|
|
for (p = wenv; p && *p; ) {
|
|
size_t s = wcslen(p) + 1;
|
|
size += s;
|
|
p += s;
|
|
}
|
|
|
|
DUP_ARRAY(result, wenv, size);
|
|
FreeEnvironmentStringsW(wenv);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* If there is a deltaenv, let's accumulate all keys into `array`,
|
|
* sort them using the stable git_stable_qsort() and then copy,
|
|
* skipping duplicate keys
|
|
*/
|
|
for (p = wenv; p && *p; ) {
|
|
ALLOC_GROW(array, nr + 1, alloc);
|
|
s = wcslen(p) + 1;
|
|
array[nr++] = p;
|
|
p += s;
|
|
size += s;
|
|
}
|
|
|
|
/* (over-)assess size needed for wchar version of deltaenv */
|
|
for (delta_size = 0, i = 0; deltaenv[i]; i++)
|
|
delta_size += strlen(deltaenv[i]) * 2 + 1;
|
|
ALLOC_ARRAY(wdeltaenv, delta_size);
|
|
|
|
/* convert the deltaenv, appending to array */
|
|
for (i = 0, p = wdeltaenv; deltaenv[i]; i++) {
|
|
ALLOC_GROW(array, nr + 1, alloc);
|
|
wlen = xutftowcs(p, deltaenv[i], wdeltaenv + delta_size - p);
|
|
array[nr++] = p;
|
|
p += wlen + 1;
|
|
}
|
|
|
|
git_stable_qsort(array, nr, sizeof(*array), wenvcmp);
|
|
ALLOC_ARRAY(result, size + delta_size);
|
|
|
|
for (p = result, i = 0; i < nr; i++) {
|
|
/* Skip any duplicate keys; last one wins */
|
|
while (i + 1 < nr && !wenvcmp(array + i, array + i + 1))
|
|
i++;
|
|
|
|
/* Skip "to delete" entry */
|
|
if (!wcschr(array[i], L'='))
|
|
continue;
|
|
|
|
size = wcslen(array[i]) + 1;
|
|
COPY_ARRAY(p, array[i], size);
|
|
p += size;
|
|
}
|
|
*p = L'\0';
|
|
|
|
free(array);
|
|
free(wdeltaenv);
|
|
FreeEnvironmentStringsW(wenv);
|
|
return result;
|
|
}
|
|
|
|
static void do_unset_environment_variables(void)
|
|
{
|
|
static int done;
|
|
char *p = unset_environment_variables;
|
|
|
|
if (done || !p)
|
|
return;
|
|
done = 1;
|
|
|
|
for (;;) {
|
|
char *comma = strchr(p, ',');
|
|
|
|
if (comma)
|
|
*comma = '\0';
|
|
unsetenv(p);
|
|
if (!comma)
|
|
break;
|
|
p = comma + 1;
|
|
}
|
|
}
|
|
|
|
struct pinfo_t {
|
|
struct pinfo_t *next;
|
|
pid_t pid;
|
|
HANDLE proc;
|
|
};
|
|
static struct pinfo_t *pinfo = NULL;
|
|
CRITICAL_SECTION pinfo_cs;
|
|
|
|
/* Used to match and chomp off path components */
|
|
static inline int match_last_path_component(const char *path, size_t *len,
|
|
const char *component)
|
|
{
|
|
size_t component_len = strlen(component);
|
|
if (*len < component_len + 1 ||
|
|
!is_dir_sep(path[*len - component_len - 1]) ||
|
|
fspathncmp(path + *len - component_len, component, component_len))
|
|
return 0;
|
|
*len -= component_len + 1;
|
|
/* chomp off repeated dir separators */
|
|
while (*len > 0 && is_dir_sep(path[*len - 1]))
|
|
(*len)--;
|
|
return 1;
|
|
}
|
|
|
|
static int is_msys2_sh(const char *cmd)
|
|
{
|
|
if (!cmd)
|
|
return 0;
|
|
|
|
if (!strcmp(cmd, "sh")) {
|
|
static int ret = -1;
|
|
char *p;
|
|
|
|
if (ret >= 0)
|
|
return ret;
|
|
|
|
p = path_lookup(cmd, 0);
|
|
if (!p)
|
|
ret = 0;
|
|
else {
|
|
size_t len = strlen(p);
|
|
|
|
ret = match_last_path_component(p, &len, "sh.exe") &&
|
|
match_last_path_component(p, &len, "bin") &&
|
|
match_last_path_component(p, &len, "usr");
|
|
free(p);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (ends_with(cmd, "\\sh.exe")) {
|
|
static char *sh;
|
|
|
|
if (!sh)
|
|
sh = path_lookup("sh", 0);
|
|
|
|
return !fspathcmp(cmd, sh);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
|
|
const char *dir,
|
|
int prepend_cmd, int fhin, int fhout, int fherr)
|
|
{
|
|
static int restrict_handle_inheritance = -1;
|
|
STARTUPINFOEXW si;
|
|
PROCESS_INFORMATION pi;
|
|
LPPROC_THREAD_ATTRIBUTE_LIST attr_list = NULL;
|
|
HANDLE stdhandles[3];
|
|
DWORD stdhandles_count = 0;
|
|
SIZE_T size;
|
|
struct strbuf args;
|
|
wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
|
|
unsigned flags = CREATE_UNICODE_ENVIRONMENT;
|
|
BOOL ret;
|
|
HANDLE cons;
|
|
const char *(*quote_arg)(const char *arg) =
|
|
is_msys2_sh(cmd ? cmd : *argv) ?
|
|
quote_arg_msys2 : quote_arg_msvc;
|
|
const char *strace_env;
|
|
|
|
/* Make sure to override previous errors, if any */
|
|
errno = 0;
|
|
|
|
if (restrict_handle_inheritance < 0)
|
|
restrict_handle_inheritance = core_restrict_inherited_handles;
|
|
/*
|
|
* The following code to restrict which handles are inherited seems
|
|
* to work properly only on Windows 7 and later, so let's disable it
|
|
* on Windows Vista and 2008.
|
|
*/
|
|
if (restrict_handle_inheritance < 0)
|
|
restrict_handle_inheritance = GetVersion() >> 16 >= 7601;
|
|
|
|
do_unset_environment_variables();
|
|
|
|
/* Determine whether or not we are associated to a console */
|
|
cons = CreateFileW(L"CONOUT$", GENERIC_WRITE,
|
|
FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
|
|
FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (cons == INVALID_HANDLE_VALUE) {
|
|
/* There is no console associated with this process.
|
|
* Since the child is a console process, Windows
|
|
* would normally create a console window. But
|
|
* since we'll be redirecting std streams, we do
|
|
* not need the console.
|
|
* It is necessary to use DETACHED_PROCESS
|
|
* instead of CREATE_NO_WINDOW to make ssh
|
|
* recognize that it has no console.
|
|
*/
|
|
flags |= DETACHED_PROCESS;
|
|
} else {
|
|
/* There is already a console. If we specified
|
|
* DETACHED_PROCESS here, too, Windows would
|
|
* disassociate the child from the console.
|
|
* The same is true for CREATE_NO_WINDOW.
|
|
* Go figure!
|
|
*/
|
|
CloseHandle(cons);
|
|
}
|
|
memset(&si, 0, sizeof(si));
|
|
si.StartupInfo.cb = sizeof(si);
|
|
si.StartupInfo.hStdInput = winansi_get_osfhandle(fhin);
|
|
si.StartupInfo.hStdOutput = winansi_get_osfhandle(fhout);
|
|
si.StartupInfo.hStdError = winansi_get_osfhandle(fherr);
|
|
|
|
/* The list of handles cannot contain duplicates */
|
|
if (si.StartupInfo.hStdInput != INVALID_HANDLE_VALUE)
|
|
stdhandles[stdhandles_count++] = si.StartupInfo.hStdInput;
|
|
if (si.StartupInfo.hStdOutput != INVALID_HANDLE_VALUE &&
|
|
si.StartupInfo.hStdOutput != si.StartupInfo.hStdInput)
|
|
stdhandles[stdhandles_count++] = si.StartupInfo.hStdOutput;
|
|
if (si.StartupInfo.hStdError != INVALID_HANDLE_VALUE &&
|
|
si.StartupInfo.hStdError != si.StartupInfo.hStdInput &&
|
|
si.StartupInfo.hStdError != si.StartupInfo.hStdOutput)
|
|
stdhandles[stdhandles_count++] = si.StartupInfo.hStdError;
|
|
if (stdhandles_count)
|
|
si.StartupInfo.dwFlags |= STARTF_USESTDHANDLES;
|
|
|
|
if (*argv && !strcmp(cmd, *argv))
|
|
wcmd[0] = L'\0';
|
|
/*
|
|
* Paths to executables and to the current directory do not support
|
|
* long paths, therefore we cannot use xutftowcs_long_path() here.
|
|
*/
|
|
else if (xutftowcs_path(wcmd, cmd) < 0)
|
|
return -1;
|
|
if (dir && xutftowcs_path(wdir, dir) < 0)
|
|
return -1;
|
|
|
|
/* concatenate argv, quoting args as we go */
|
|
strbuf_init(&args, 0);
|
|
if (prepend_cmd) {
|
|
char *quoted = (char *)quote_arg(cmd);
|
|
strbuf_addstr(&args, quoted);
|
|
if (quoted != cmd)
|
|
free(quoted);
|
|
}
|
|
for (; *argv; argv++) {
|
|
char *quoted = (char *)quote_arg(*argv);
|
|
if (*args.buf)
|
|
strbuf_addch(&args, ' ');
|
|
strbuf_addstr(&args, quoted);
|
|
if (quoted != *argv)
|
|
free(quoted);
|
|
}
|
|
|
|
strace_env = getenv("GIT_STRACE_COMMANDS");
|
|
if (strace_env) {
|
|
char *p = path_lookup("strace.exe", 1);
|
|
if (!p)
|
|
return error("strace not found!");
|
|
if (xutftowcs_path(wcmd, p) < 0) {
|
|
free(p);
|
|
return -1;
|
|
}
|
|
free(p);
|
|
if (!strcmp("1", strace_env) ||
|
|
!strcasecmp("yes", strace_env) ||
|
|
!strcasecmp("true", strace_env))
|
|
strbuf_insert(&args, 0, "strace ", 7);
|
|
else {
|
|
const char *quoted = quote_arg(strace_env);
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addf(&buf, "strace -o %s ", quoted);
|
|
if (quoted != strace_env)
|
|
free((char *)quoted);
|
|
strbuf_insert(&args, 0, buf.buf, buf.len);
|
|
strbuf_release(&buf);
|
|
}
|
|
}
|
|
|
|
ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
|
|
xutftowcs(wargs, args.buf, 2 * args.len + 1);
|
|
strbuf_release(&args);
|
|
|
|
wenvblk = make_environment_block(deltaenv);
|
|
|
|
memset(&pi, 0, sizeof(pi));
|
|
if (restrict_handle_inheritance && stdhandles_count &&
|
|
(InitializeProcThreadAttributeList(NULL, 1, 0, &size) ||
|
|
GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
|
|
(attr_list = (LPPROC_THREAD_ATTRIBUTE_LIST)
|
|
(HeapAlloc(GetProcessHeap(), 0, size))) &&
|
|
InitializeProcThreadAttributeList(attr_list, 1, 0, &size) &&
|
|
UpdateProcThreadAttribute(attr_list, 0,
|
|
PROC_THREAD_ATTRIBUTE_HANDLE_LIST,
|
|
stdhandles,
|
|
stdhandles_count * sizeof(HANDLE),
|
|
NULL, NULL)) {
|
|
si.lpAttributeList = attr_list;
|
|
flags |= EXTENDED_STARTUPINFO_PRESENT;
|
|
}
|
|
|
|
ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL,
|
|
stdhandles_count ? TRUE : FALSE,
|
|
flags, wenvblk, dir ? wdir : NULL,
|
|
&si.StartupInfo, &pi);
|
|
|
|
/*
|
|
* On Windows 2008 R2, it seems that specifying certain types of handles
|
|
* (such as FILE_TYPE_CHAR or FILE_TYPE_PIPE) will always produce an
|
|
* error. Rather than playing finicky and fragile games, let's just try
|
|
* to detect this situation and simply try again without restricting any
|
|
* handle inheritance. This is still better than failing to create
|
|
* processes.
|
|
*/
|
|
if (!ret && restrict_handle_inheritance && stdhandles_count) {
|
|
DWORD err = GetLastError();
|
|
struct strbuf buf = STRBUF_INIT;
|
|
|
|
if (err != ERROR_NO_SYSTEM_RESOURCES &&
|
|
/*
|
|
* On Windows 7 and earlier, handles on pipes and character
|
|
* devices are inherited automatically, and cannot be
|
|
* specified in the thread handle list. Rather than trying
|
|
* to catch each and every corner case (and running the
|
|
* chance of *still* forgetting a few), let's just fall
|
|
* back to creating the process without trying to limit the
|
|
* handle inheritance.
|
|
*/
|
|
!(err == ERROR_INVALID_PARAMETER &&
|
|
GetVersion() >> 16 < 9200) &&
|
|
!getenv("SUPPRESS_HANDLE_INHERITANCE_WARNING")) {
|
|
DWORD fl = 0;
|
|
int i;
|
|
|
|
setenv("SUPPRESS_HANDLE_INHERITANCE_WARNING", "1", 1);
|
|
|
|
for (i = 0; i < stdhandles_count; i++) {
|
|
HANDLE h = stdhandles[i];
|
|
strbuf_addf(&buf, "handle #%d: %p (type %lx, "
|
|
"handle info (%d) %lx\n", i, h,
|
|
GetFileType(h),
|
|
GetHandleInformation(h, &fl),
|
|
fl);
|
|
}
|
|
strbuf_addstr(&buf, "\nThis is a bug; please report it "
|
|
"at\nhttps://github.com/git-for-windows/"
|
|
"git/issues/new\n\n"
|
|
"To suppress this warning, please set "
|
|
"the environment variable\n\n"
|
|
"\tSUPPRESS_HANDLE_INHERITANCE_WARNING=1"
|
|
"\n");
|
|
}
|
|
restrict_handle_inheritance = 0;
|
|
flags &= ~EXTENDED_STARTUPINFO_PRESENT;
|
|
ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL,
|
|
TRUE, flags, wenvblk, dir ? wdir : NULL,
|
|
&si.StartupInfo, &pi);
|
|
if (!ret)
|
|
errno = err_win_to_posix(GetLastError());
|
|
if (ret && buf.len) {
|
|
warning("failed to restrict file handles (%ld)\n\n%s",
|
|
err, buf.buf);
|
|
}
|
|
strbuf_release(&buf);
|
|
} else if (!ret)
|
|
errno = err_win_to_posix(GetLastError());
|
|
|
|
if (si.lpAttributeList)
|
|
DeleteProcThreadAttributeList(si.lpAttributeList);
|
|
if (attr_list)
|
|
HeapFree(GetProcessHeap(), 0, attr_list);
|
|
|
|
free(wenvblk);
|
|
free(wargs);
|
|
|
|
if (!ret)
|
|
return -1;
|
|
|
|
CloseHandle(pi.hThread);
|
|
|
|
/*
|
|
* The process ID is the human-readable identifier of the process
|
|
* that we want to present in log and error messages. The handle
|
|
* is not useful for this purpose. But we cannot close it, either,
|
|
* because it is not possible to turn a process ID into a process
|
|
* handle after the process terminated.
|
|
* Keep the handle in a list for waitpid.
|
|
*/
|
|
EnterCriticalSection(&pinfo_cs);
|
|
{
|
|
struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
|
|
info->pid = pi.dwProcessId;
|
|
info->proc = pi.hProcess;
|
|
info->next = pinfo;
|
|
pinfo = info;
|
|
}
|
|
LeaveCriticalSection(&pinfo_cs);
|
|
|
|
return (pid_t)pi.dwProcessId;
|
|
}
|
|
|
|
static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
|
|
{
|
|
return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
|
|
}
|
|
|
|
pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
|
|
const char *dir,
|
|
int fhin, int fhout, int fherr)
|
|
{
|
|
pid_t pid;
|
|
char *prog = path_lookup(cmd, 0);
|
|
|
|
if (!prog) {
|
|
errno = ENOENT;
|
|
pid = -1;
|
|
}
|
|
else {
|
|
const char *interpr = parse_interpreter(prog);
|
|
|
|
if (interpr) {
|
|
const char *argv0 = argv[0];
|
|
char *iprog = path_lookup(interpr, 1);
|
|
argv[0] = prog;
|
|
if (!iprog) {
|
|
errno = ENOENT;
|
|
pid = -1;
|
|
}
|
|
else {
|
|
pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
|
|
fhin, fhout, fherr);
|
|
free(iprog);
|
|
}
|
|
argv[0] = argv0;
|
|
}
|
|
else
|
|
pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
|
|
fhin, fhout, fherr);
|
|
free(prog);
|
|
}
|
|
return pid;
|
|
}
|
|
|
|
static int try_shell_exec(const char *cmd, char *const *argv)
|
|
{
|
|
const char *interpr = parse_interpreter(cmd);
|
|
char *prog;
|
|
int pid = 0;
|
|
|
|
if (!interpr)
|
|
return 0;
|
|
prog = path_lookup(interpr, 1);
|
|
if (prog) {
|
|
int exec_id;
|
|
int argc = 0;
|
|
char **argv2;
|
|
while (argv[argc]) argc++;
|
|
ALLOC_ARRAY(argv2, argc + 1);
|
|
argv2[0] = (char *)cmd; /* full path to the script file */
|
|
COPY_ARRAY(&argv2[1], &argv[1], argc);
|
|
exec_id = trace2_exec(prog, (const char **)argv2);
|
|
pid = mingw_spawnv(prog, (const char **)argv2, 1);
|
|
if (pid >= 0) {
|
|
int status;
|
|
if (waitpid(pid, &status, 0) < 0)
|
|
status = 255;
|
|
trace2_exec_result(exec_id, status);
|
|
exit(status);
|
|
}
|
|
trace2_exec_result(exec_id, -1);
|
|
pid = 1; /* indicate that we tried but failed */
|
|
free(prog);
|
|
free(argv2);
|
|
}
|
|
return pid;
|
|
}
|
|
|
|
int mingw_execv(const char *cmd, char *const *argv)
|
|
{
|
|
/* check if git_command is a shell script */
|
|
if (!try_shell_exec(cmd, argv)) {
|
|
int pid, status;
|
|
int exec_id;
|
|
|
|
exec_id = trace2_exec(cmd, (const char **)argv);
|
|
pid = mingw_spawnv(cmd, (const char **)argv, 0);
|
|
if (pid < 0) {
|
|
trace2_exec_result(exec_id, -1);
|
|
return -1;
|
|
}
|
|
if (waitpid(pid, &status, 0) < 0)
|
|
status = 255;
|
|
trace2_exec_result(exec_id, status);
|
|
exit(status);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int mingw_execvp(const char *cmd, char *const *argv)
|
|
{
|
|
char *prog = path_lookup(cmd, 0);
|
|
|
|
if (prog) {
|
|
mingw_execv(prog, argv);
|
|
free(prog);
|
|
} else
|
|
errno = ENOENT;
|
|
|
|
return -1;
|
|
}
|
|
|
|
int mingw_kill(pid_t pid, int sig)
|
|
{
|
|
if (pid > 0 && sig == SIGTERM) {
|
|
HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
|
|
|
|
if (TerminateProcess(h, -1)) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
|
|
errno = err_win_to_posix(GetLastError());
|
|
CloseHandle(h);
|
|
return -1;
|
|
} else if (pid > 0 && sig == 0) {
|
|
HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
|
|
if (h) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* UTF-8 versions of getenv(), putenv() and unsetenv().
|
|
* Internally, they use the CRT's stock UNICODE routines
|
|
* to avoid data loss.
|
|
*/
|
|
char *mingw_getenv(const char *name)
|
|
{
|
|
#define GETENV_MAX_RETAIN 64
|
|
static char *values[GETENV_MAX_RETAIN];
|
|
static int value_counter;
|
|
int len_key, len_value;
|
|
wchar_t *w_key;
|
|
char *value;
|
|
wchar_t w_value[32768];
|
|
|
|
if (!name || !*name)
|
|
return NULL;
|
|
|
|
len_key = strlen(name) + 1;
|
|
/* We cannot use xcalloc() here because that uses getenv() itself */
|
|
w_key = calloc(len_key, sizeof(wchar_t));
|
|
if (!w_key)
|
|
die("Out of memory, (tried to allocate %u wchar_t's)", len_key);
|
|
xutftowcs(w_key, name, len_key);
|
|
/* GetEnvironmentVariableW() only sets the last error upon failure */
|
|
SetLastError(ERROR_SUCCESS);
|
|
len_value = GetEnvironmentVariableW(w_key, w_value, ARRAY_SIZE(w_value));
|
|
if (!len_value && GetLastError() == ERROR_ENVVAR_NOT_FOUND) {
|
|
free(w_key);
|
|
return NULL;
|
|
}
|
|
free(w_key);
|
|
|
|
len_value = len_value * 3 + 1;
|
|
/* We cannot use xcalloc() here because that uses getenv() itself */
|
|
value = calloc(len_value, sizeof(char));
|
|
if (!value)
|
|
die("Out of memory, (tried to allocate %u bytes)", len_value);
|
|
xwcstoutf(value, w_value, len_value);
|
|
|
|
/*
|
|
* We return `value` which is an allocated value and the caller is NOT
|
|
* expecting to have to free it, so we keep a round-robin array,
|
|
* invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
|
|
*/
|
|
free(values[value_counter]);
|
|
values[value_counter++] = value;
|
|
if (value_counter >= ARRAY_SIZE(values))
|
|
value_counter = 0;
|
|
|
|
return value;
|
|
}
|
|
|
|
int mingw_putenv(const char *namevalue)
|
|
{
|
|
int size;
|
|
wchar_t *wide, *equal;
|
|
BOOL result;
|
|
|
|
if (!namevalue || !*namevalue)
|
|
return 0;
|
|
|
|
size = strlen(namevalue) * 2 + 1;
|
|
wide = calloc(size, sizeof(wchar_t));
|
|
if (!wide)
|
|
die("Out of memory, (tried to allocate %u wchar_t's)", size);
|
|
xutftowcs(wide, namevalue, size);
|
|
equal = wcschr(wide, L'=');
|
|
if (!equal)
|
|
result = SetEnvironmentVariableW(wide, NULL);
|
|
else {
|
|
*equal = L'\0';
|
|
result = SetEnvironmentVariableW(wide, equal + 1);
|
|
}
|
|
free(wide);
|
|
|
|
if (!result)
|
|
errno = err_win_to_posix(GetLastError());
|
|
|
|
return result ? 0 : -1;
|
|
}
|
|
|
|
static void ensure_socket_initialization(void)
|
|
{
|
|
WSADATA wsa;
|
|
static int initialized = 0;
|
|
|
|
if (initialized)
|
|
return;
|
|
|
|
if (WSAStartup(MAKEWORD(2,2), &wsa))
|
|
die("unable to initialize winsock subsystem, error %d",
|
|
WSAGetLastError());
|
|
|
|
atexit((void(*)(void)) WSACleanup);
|
|
initialized = 1;
|
|
}
|
|
|
|
static int winsock_error_to_errno(DWORD err)
|
|
{
|
|
switch (err) {
|
|
case WSAEINTR: return EINTR;
|
|
case WSAEBADF: return EBADF;
|
|
case WSAEACCES: return EACCES;
|
|
case WSAEFAULT: return EFAULT;
|
|
case WSAEINVAL: return EINVAL;
|
|
case WSAEMFILE: return EMFILE;
|
|
case WSAEWOULDBLOCK: return EWOULDBLOCK;
|
|
case WSAEINPROGRESS: return EINPROGRESS;
|
|
case WSAEALREADY: return EALREADY;
|
|
case WSAENOTSOCK: return ENOTSOCK;
|
|
case WSAEDESTADDRREQ: return EDESTADDRREQ;
|
|
case WSAEMSGSIZE: return EMSGSIZE;
|
|
case WSAEPROTOTYPE: return EPROTOTYPE;
|
|
case WSAENOPROTOOPT: return ENOPROTOOPT;
|
|
case WSAEPROTONOSUPPORT: return EPROTONOSUPPORT;
|
|
case WSAEOPNOTSUPP: return EOPNOTSUPP;
|
|
case WSAEAFNOSUPPORT: return EAFNOSUPPORT;
|
|
case WSAEADDRINUSE: return EADDRINUSE;
|
|
case WSAEADDRNOTAVAIL: return EADDRNOTAVAIL;
|
|
case WSAENETDOWN: return ENETDOWN;
|
|
case WSAENETUNREACH: return ENETUNREACH;
|
|
case WSAENETRESET: return ENETRESET;
|
|
case WSAECONNABORTED: return ECONNABORTED;
|
|
case WSAECONNRESET: return ECONNRESET;
|
|
case WSAENOBUFS: return ENOBUFS;
|
|
case WSAEISCONN: return EISCONN;
|
|
case WSAENOTCONN: return ENOTCONN;
|
|
case WSAETIMEDOUT: return ETIMEDOUT;
|
|
case WSAECONNREFUSED: return ECONNREFUSED;
|
|
case WSAELOOP: return ELOOP;
|
|
case WSAENAMETOOLONG: return ENAMETOOLONG;
|
|
case WSAEHOSTUNREACH: return EHOSTUNREACH;
|
|
case WSAENOTEMPTY: return ENOTEMPTY;
|
|
/* No errno equivalent; default to EIO */
|
|
case WSAESOCKTNOSUPPORT:
|
|
case WSAEPFNOSUPPORT:
|
|
case WSAESHUTDOWN:
|
|
case WSAETOOMANYREFS:
|
|
case WSAEHOSTDOWN:
|
|
case WSAEPROCLIM:
|
|
case WSAEUSERS:
|
|
case WSAEDQUOT:
|
|
case WSAESTALE:
|
|
case WSAEREMOTE:
|
|
case WSASYSNOTREADY:
|
|
case WSAVERNOTSUPPORTED:
|
|
case WSANOTINITIALISED:
|
|
case WSAEDISCON:
|
|
case WSAENOMORE:
|
|
case WSAECANCELLED:
|
|
case WSAEINVALIDPROCTABLE:
|
|
case WSAEINVALIDPROVIDER:
|
|
case WSAEPROVIDERFAILEDINIT:
|
|
case WSASYSCALLFAILURE:
|
|
case WSASERVICE_NOT_FOUND:
|
|
case WSATYPE_NOT_FOUND:
|
|
case WSA_E_NO_MORE:
|
|
case WSA_E_CANCELLED:
|
|
case WSAEREFUSED:
|
|
case WSAHOST_NOT_FOUND:
|
|
case WSATRY_AGAIN:
|
|
case WSANO_RECOVERY:
|
|
case WSANO_DATA:
|
|
case WSA_QOS_RECEIVERS:
|
|
case WSA_QOS_SENDERS:
|
|
case WSA_QOS_NO_SENDERS:
|
|
case WSA_QOS_NO_RECEIVERS:
|
|
case WSA_QOS_REQUEST_CONFIRMED:
|
|
case WSA_QOS_ADMISSION_FAILURE:
|
|
case WSA_QOS_POLICY_FAILURE:
|
|
case WSA_QOS_BAD_STYLE:
|
|
case WSA_QOS_BAD_OBJECT:
|
|
case WSA_QOS_TRAFFIC_CTRL_ERROR:
|
|
case WSA_QOS_GENERIC_ERROR:
|
|
case WSA_QOS_ESERVICETYPE:
|
|
case WSA_QOS_EFLOWSPEC:
|
|
case WSA_QOS_EPROVSPECBUF:
|
|
case WSA_QOS_EFILTERSTYLE:
|
|
case WSA_QOS_EFILTERTYPE:
|
|
case WSA_QOS_EFILTERCOUNT:
|
|
case WSA_QOS_EOBJLENGTH:
|
|
case WSA_QOS_EFLOWCOUNT:
|
|
#ifndef _MSC_VER
|
|
case WSA_QOS_EUNKNOWNPSOBJ:
|
|
#endif
|
|
case WSA_QOS_EPOLICYOBJ:
|
|
case WSA_QOS_EFLOWDESC:
|
|
case WSA_QOS_EPSFLOWSPEC:
|
|
case WSA_QOS_EPSFILTERSPEC:
|
|
case WSA_QOS_ESDMODEOBJ:
|
|
case WSA_QOS_ESHAPERATEOBJ:
|
|
case WSA_QOS_RESERVED_PETYPE:
|
|
default: return EIO;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* On Windows, `errno` is a global macro to a function call.
|
|
* This makes it difficult to debug and single-step our mappings.
|
|
*/
|
|
static inline void set_wsa_errno(void)
|
|
{
|
|
DWORD wsa = WSAGetLastError();
|
|
int e = winsock_error_to_errno(wsa);
|
|
errno = e;
|
|
|
|
#ifdef DEBUG_WSA_ERRNO
|
|
fprintf(stderr, "winsock error: %d -> %d\n", wsa, e);
|
|
fflush(stderr);
|
|
#endif
|
|
}
|
|
|
|
static inline int winsock_return(int ret)
|
|
{
|
|
if (ret < 0)
|
|
set_wsa_errno();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define WINSOCK_RETURN(x) do { return winsock_return(x); } while (0)
|
|
|
|
#undef gethostname
|
|
int mingw_gethostname(char *name, int namelen)
|
|
{
|
|
ensure_socket_initialization();
|
|
WINSOCK_RETURN(gethostname(name, namelen));
|
|
}
|
|
|
|
#undef gethostbyname
|
|
struct hostent *mingw_gethostbyname(const char *host)
|
|
{
|
|
struct hostent *ret;
|
|
|
|
ensure_socket_initialization();
|
|
|
|
ret = gethostbyname(host);
|
|
if (!ret)
|
|
set_wsa_errno();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#undef getaddrinfo
|
|
int mingw_getaddrinfo(const char *node, const char *service,
|
|
const struct addrinfo *hints, struct addrinfo **res)
|
|
{
|
|
ensure_socket_initialization();
|
|
WINSOCK_RETURN(getaddrinfo(node, service, hints, res));
|
|
}
|
|
|
|
int mingw_socket(int domain, int type, int protocol)
|
|
{
|
|
int sockfd;
|
|
SOCKET s;
|
|
|
|
ensure_socket_initialization();
|
|
s = WSASocket(domain, type, protocol, NULL, 0, 0);
|
|
if (s == INVALID_SOCKET) {
|
|
/*
|
|
* WSAGetLastError() values are regular BSD error codes
|
|
* biased by WSABASEERR.
|
|
* However, strerror() does not know about networking
|
|
* specific errors, which are values beginning at 38 or so.
|
|
* Therefore, we choose to leave the biased error code
|
|
* in errno so that _if_ someone looks up the code somewhere,
|
|
* then it is at least the number that are usually listed.
|
|
*/
|
|
set_wsa_errno();
|
|
return -1;
|
|
}
|
|
/* convert into a file descriptor */
|
|
if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
|
|
closesocket(s);
|
|
return error("unable to make a socket file descriptor: %s",
|
|
strerror(errno));
|
|
}
|
|
return sockfd;
|
|
}
|
|
|
|
#undef connect
|
|
int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
WINSOCK_RETURN(connect(s, sa, sz));
|
|
}
|
|
|
|
#undef bind
|
|
int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
WINSOCK_RETURN(bind(s, sa, sz));
|
|
}
|
|
|
|
#undef setsockopt
|
|
int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
WINSOCK_RETURN(setsockopt(s, lvl, optname, (const char*)optval, optlen));
|
|
}
|
|
|
|
#undef shutdown
|
|
int mingw_shutdown(int sockfd, int how)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
WINSOCK_RETURN(shutdown(s, how));
|
|
}
|
|
|
|
#undef listen
|
|
int mingw_listen(int sockfd, int backlog)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
WINSOCK_RETURN(listen(s, backlog));
|
|
}
|
|
|
|
#undef accept
|
|
int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
|
|
{
|
|
int sockfd2;
|
|
|
|
SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
|
|
SOCKET s2 = accept(s1, sa, sz);
|
|
|
|
if (s2 == INVALID_SOCKET) {
|
|
set_wsa_errno();
|
|
return -1;
|
|
}
|
|
|
|
/* convert into a file descriptor */
|
|
if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
|
|
int err = errno;
|
|
closesocket(s2);
|
|
return error("unable to make a socket file descriptor: %s",
|
|
strerror(err));
|
|
}
|
|
return sockfd2;
|
|
}
|
|
|
|
#undef rename
|
|
int mingw_rename(const char *pold, const char *pnew)
|
|
{
|
|
DWORD attrs, gle;
|
|
int tries = 0;
|
|
wchar_t wpold[MAX_LONG_PATH], wpnew[MAX_LONG_PATH];
|
|
if (xutftowcs_long_path(wpold, pold) < 0 ||
|
|
xutftowcs_long_path(wpnew, pnew) < 0)
|
|
return -1;
|
|
|
|
/*
|
|
* Try native rename() first to get errno right.
|
|
* It is based on MoveFile(), which cannot overwrite existing files.
|
|
*/
|
|
if (!_wrename(wpold, wpnew))
|
|
return 0;
|
|
if (errno != EEXIST)
|
|
return -1;
|
|
repeat:
|
|
if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
/* TODO: translate more errors */
|
|
gle = GetLastError();
|
|
if (gle == ERROR_ACCESS_DENIED &&
|
|
(attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
|
|
if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
|
|
DWORD attrsold = GetFileAttributesW(wpold);
|
|
if (attrsold == INVALID_FILE_ATTRIBUTES ||
|
|
!(attrsold & FILE_ATTRIBUTE_DIRECTORY))
|
|
errno = EISDIR;
|
|
else if (!_wrmdir(wpnew))
|
|
goto repeat;
|
|
return -1;
|
|
}
|
|
if ((attrs & FILE_ATTRIBUTE_READONLY) &&
|
|
SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
|
|
if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
gle = GetLastError();
|
|
/* revert file attributes on failure */
|
|
SetFileAttributesW(wpnew, attrs);
|
|
}
|
|
}
|
|
if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
|
|
/*
|
|
* We assume that some other process had the source or
|
|
* destination file open at the wrong moment and retry.
|
|
* In order to give the other process a higher chance to
|
|
* complete its operation, we give up our time slice now.
|
|
* If we have to retry again, we do sleep a bit.
|
|
*/
|
|
Sleep(delay[tries]);
|
|
tries++;
|
|
goto repeat;
|
|
}
|
|
if (gle == ERROR_ACCESS_DENIED &&
|
|
ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
|
|
"Should I try again?", pold, pnew))
|
|
goto repeat;
|
|
|
|
errno = EACCES;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Note that this doesn't return the actual pagesize, but
|
|
* the allocation granularity. If future Windows specific git code
|
|
* needs the real getpagesize function, we need to find another solution.
|
|
*/
|
|
int mingw_getpagesize(void)
|
|
{
|
|
SYSTEM_INFO si;
|
|
GetSystemInfo(&si);
|
|
return si.dwAllocationGranularity;
|
|
}
|
|
|
|
/* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
|
|
enum EXTENDED_NAME_FORMAT {
|
|
NameDisplay = 3,
|
|
NameUserPrincipal = 8
|
|
};
|
|
|
|
static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type)
|
|
{
|
|
DECLARE_PROC_ADDR(secur32.dll, BOOL, SEC_ENTRY, GetUserNameExW,
|
|
enum EXTENDED_NAME_FORMAT, LPCWSTR, PULONG);
|
|
static wchar_t wbuffer[1024];
|
|
DWORD len;
|
|
|
|
if (!INIT_PROC_ADDR(GetUserNameExW))
|
|
return NULL;
|
|
|
|
len = ARRAY_SIZE(wbuffer);
|
|
if (GetUserNameExW(type, wbuffer, &len)) {
|
|
char *converted = xmalloc((len *= 3));
|
|
if (xwcstoutf(converted, wbuffer, len) >= 0)
|
|
return converted;
|
|
free(converted);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char *mingw_query_user_email(void)
|
|
{
|
|
return get_extended_user_info(NameUserPrincipal);
|
|
}
|
|
|
|
struct passwd *getpwuid(int uid)
|
|
{
|
|
static unsigned initialized;
|
|
static char user_name[100];
|
|
static struct passwd *p;
|
|
wchar_t buf[100];
|
|
DWORD len;
|
|
|
|
if (initialized)
|
|
return p;
|
|
|
|
len = ARRAY_SIZE(buf);
|
|
if (!GetUserNameW(buf, &len)) {
|
|
initialized = 1;
|
|
return NULL;
|
|
}
|
|
|
|
if (xwcstoutf(user_name, buf, sizeof(user_name)) < 0) {
|
|
initialized = 1;
|
|
return NULL;
|
|
}
|
|
|
|
p = xmalloc(sizeof(*p));
|
|
p->pw_name = user_name;
|
|
p->pw_gecos = get_extended_user_info(NameDisplay);
|
|
if (!p->pw_gecos)
|
|
p->pw_gecos = "unknown";
|
|
p->pw_dir = NULL;
|
|
|
|
initialized = 1;
|
|
return p;
|
|
}
|
|
|
|
static HANDLE timer_event;
|
|
static HANDLE timer_thread;
|
|
static int timer_interval;
|
|
static int one_shot;
|
|
static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
|
|
|
|
/* The timer works like this:
|
|
* The thread, ticktack(), is a trivial routine that most of the time
|
|
* only waits to receive the signal to terminate. The main thread tells
|
|
* the thread to terminate by setting the timer_event to the signalled
|
|
* state.
|
|
* But ticktack() interrupts the wait state after the timer's interval
|
|
* length to call the signal handler.
|
|
*/
|
|
|
|
static unsigned __stdcall ticktack(void *dummy)
|
|
{
|
|
while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
|
|
mingw_raise(SIGALRM);
|
|
if (one_shot)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int start_timer_thread(void)
|
|
{
|
|
timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if (timer_event) {
|
|
timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
|
|
if (!timer_thread )
|
|
return errno = ENOMEM,
|
|
error("cannot start timer thread");
|
|
} else
|
|
return errno = ENOMEM,
|
|
error("cannot allocate resources for timer");
|
|
return 0;
|
|
}
|
|
|
|
static void stop_timer_thread(void)
|
|
{
|
|
if (timer_event)
|
|
SetEvent(timer_event); /* tell thread to terminate */
|
|
if (timer_thread) {
|
|
int rc = WaitForSingleObject(timer_thread, 10000);
|
|
if (rc == WAIT_TIMEOUT)
|
|
error("timer thread did not terminate timely");
|
|
else if (rc != WAIT_OBJECT_0)
|
|
error("waiting for timer thread failed: %lu",
|
|
GetLastError());
|
|
CloseHandle(timer_thread);
|
|
}
|
|
if (timer_event)
|
|
CloseHandle(timer_event);
|
|
timer_event = NULL;
|
|
timer_thread = NULL;
|
|
}
|
|
|
|
static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
|
|
{
|
|
return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
|
|
}
|
|
|
|
int setitimer(int type, struct itimerval *in, struct itimerval *out)
|
|
{
|
|
static const struct timeval zero;
|
|
static int atexit_done;
|
|
|
|
if (out)
|
|
return errno = EINVAL,
|
|
error("setitimer param 3 != NULL not implemented");
|
|
if (!is_timeval_eq(&in->it_interval, &zero) &&
|
|
!is_timeval_eq(&in->it_interval, &in->it_value))
|
|
return errno = EINVAL,
|
|
error("setitimer: it_interval must be zero or eq it_value");
|
|
|
|
if (timer_thread)
|
|
stop_timer_thread();
|
|
|
|
if (is_timeval_eq(&in->it_value, &zero) &&
|
|
is_timeval_eq(&in->it_interval, &zero))
|
|
return 0;
|
|
|
|
timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
|
|
one_shot = is_timeval_eq(&in->it_interval, &zero);
|
|
if (!atexit_done) {
|
|
atexit(stop_timer_thread);
|
|
atexit_done = 1;
|
|
}
|
|
return start_timer_thread();
|
|
}
|
|
|
|
int sigaction(int sig, struct sigaction *in, struct sigaction *out)
|
|
{
|
|
if (sig != SIGALRM)
|
|
return errno = EINVAL,
|
|
error("sigaction only implemented for SIGALRM");
|
|
if (out)
|
|
return errno = EINVAL,
|
|
error("sigaction: param 3 != NULL not implemented");
|
|
|
|
timer_fn = in->sa_handler;
|
|
return 0;
|
|
}
|
|
|
|
#undef signal
|
|
sig_handler_t mingw_signal(int sig, sig_handler_t handler)
|
|
{
|
|
sig_handler_t old;
|
|
|
|
switch (sig) {
|
|
case SIGALRM:
|
|
old = timer_fn;
|
|
timer_fn = handler;
|
|
break;
|
|
|
|
case SIGINT:
|
|
old = sigint_fn;
|
|
sigint_fn = handler;
|
|
break;
|
|
|
|
default:
|
|
return signal(sig, handler);
|
|
}
|
|
|
|
return old;
|
|
}
|
|
|
|
#undef raise
|
|
int mingw_raise(int sig)
|
|
{
|
|
switch (sig) {
|
|
case SIGALRM:
|
|
if (timer_fn == SIG_DFL) {
|
|
if (isatty(STDERR_FILENO))
|
|
fputs("Alarm clock\n", stderr);
|
|
exit(128 + SIGALRM);
|
|
} else if (timer_fn != SIG_IGN)
|
|
timer_fn(SIGALRM);
|
|
return 0;
|
|
|
|
case SIGINT:
|
|
if (sigint_fn == SIG_DFL)
|
|
exit(128 + SIGINT);
|
|
else if (sigint_fn != SIG_IGN)
|
|
sigint_fn(SIGINT);
|
|
return 0;
|
|
|
|
#if defined(_MSC_VER)
|
|
case SIGILL:
|
|
case SIGFPE:
|
|
case SIGSEGV:
|
|
case SIGTERM:
|
|
case SIGBREAK:
|
|
case SIGABRT:
|
|
case SIGABRT_COMPAT:
|
|
/*
|
|
* The <signal.h> header in the MS C Runtime defines 8 signals
|
|
* as being supported on the platform. Anything else causes an
|
|
* "Invalid signal or error" (which in DEBUG builds causes the
|
|
* Abort/Retry/Ignore dialog). We by-pass the CRT for things we
|
|
* already know will fail.
|
|
*/
|
|
return raise(sig);
|
|
default:
|
|
errno = EINVAL;
|
|
return -1;
|
|
|
|
#else
|
|
|
|
default:
|
|
return raise(sig);
|
|
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
int link(const char *oldpath, const char *newpath)
|
|
{
|
|
wchar_t woldpath[MAX_LONG_PATH], wnewpath[MAX_LONG_PATH];
|
|
if (xutftowcs_long_path(woldpath, oldpath) < 0 ||
|
|
xutftowcs_long_path(wnewpath, newpath) < 0)
|
|
return -1;
|
|
|
|
if (!CreateHardLinkW(wnewpath, woldpath, NULL)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
pid_t waitpid(pid_t pid, int *status, int options)
|
|
{
|
|
HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
|
|
FALSE, pid);
|
|
if (!h) {
|
|
errno = ECHILD;
|
|
return -1;
|
|
}
|
|
|
|
if (pid > 0 && options & WNOHANG) {
|
|
if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
options &= ~WNOHANG;
|
|
}
|
|
|
|
if (options == 0) {
|
|
struct pinfo_t **ppinfo;
|
|
if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
|
|
if (status)
|
|
GetExitCodeProcess(h, (LPDWORD)status);
|
|
|
|
EnterCriticalSection(&pinfo_cs);
|
|
|
|
ppinfo = &pinfo;
|
|
while (*ppinfo) {
|
|
struct pinfo_t *info = *ppinfo;
|
|
if (info->pid == pid) {
|
|
CloseHandle(info->proc);
|
|
*ppinfo = info->next;
|
|
free(info);
|
|
break;
|
|
}
|
|
ppinfo = &info->next;
|
|
}
|
|
|
|
LeaveCriticalSection(&pinfo_cs);
|
|
|
|
CloseHandle(h);
|
|
return pid;
|
|
}
|
|
CloseHandle(h);
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
int (*win32_is_mount_point)(struct strbuf *path) = mingw_is_mount_point;
|
|
|
|
int mingw_is_mount_point(struct strbuf *path)
|
|
{
|
|
WIN32_FIND_DATAW findbuf = { 0 };
|
|
HANDLE handle;
|
|
wchar_t wfilename[MAX_LONG_PATH];
|
|
int wlen = xutftowcs_long_path(wfilename, path->buf);
|
|
if (wlen < 0)
|
|
die(_("could not get long path for '%s'"), path->buf);
|
|
|
|
/* remove trailing slash, if any */
|
|
if (wlen > 0 && wfilename[wlen - 1] == L'/')
|
|
wfilename[--wlen] = L'\0';
|
|
|
|
handle = FindFirstFileW(wfilename, &findbuf);
|
|
if (handle == INVALID_HANDLE_VALUE)
|
|
return 0;
|
|
FindClose(handle);
|
|
|
|
return (findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
|
|
(findbuf.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT);
|
|
}
|
|
|
|
int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
|
|
{
|
|
int upos = 0, wpos = 0;
|
|
const unsigned char *utf = (const unsigned char*) utfs;
|
|
if (!utf || !wcs || wcslen < 1) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
/* reserve space for \0 */
|
|
wcslen--;
|
|
if (utflen < 0)
|
|
utflen = INT_MAX;
|
|
|
|
while (upos < utflen) {
|
|
int c = utf[upos++] & 0xff;
|
|
if (utflen == INT_MAX && c == 0)
|
|
break;
|
|
|
|
if (wpos >= wcslen) {
|
|
wcs[wpos] = 0;
|
|
errno = ERANGE;
|
|
return -1;
|
|
}
|
|
|
|
if (c < 0x80) {
|
|
/* ASCII */
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
|
|
(utf[upos] & 0xc0) == 0x80) {
|
|
/* 2-byte utf-8 */
|
|
c = ((c & 0x1f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
|
|
!(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
|
|
(utf[upos] & 0xc0) == 0x80 &&
|
|
(utf[upos + 1] & 0xc0) == 0x80) {
|
|
/* 3-byte utf-8 */
|
|
c = ((c & 0x0f) << 12);
|
|
c |= ((utf[upos++] & 0x3f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
|
|
wpos + 1 < wcslen &&
|
|
!(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
|
|
!(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
|
|
(utf[upos] & 0xc0) == 0x80 &&
|
|
(utf[upos + 1] & 0xc0) == 0x80 &&
|
|
(utf[upos + 2] & 0xc0) == 0x80) {
|
|
/* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
|
|
c = ((c & 0x07) << 18);
|
|
c |= ((utf[upos++] & 0x3f) << 12);
|
|
c |= ((utf[upos++] & 0x3f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
c -= 0x10000;
|
|
wcs[wpos++] = 0xd800 | (c >> 10);
|
|
wcs[wpos++] = 0xdc00 | (c & 0x3ff);
|
|
} else if (c >= 0xa0) {
|
|
/* invalid utf-8 byte, printable unicode char: convert 1:1 */
|
|
wcs[wpos++] = c;
|
|
} else {
|
|
/* invalid utf-8 byte, non-printable unicode: convert to hex */
|
|
static const char *hex = "0123456789abcdef";
|
|
wcs[wpos++] = hex[c >> 4];
|
|
if (wpos < wcslen)
|
|
wcs[wpos++] = hex[c & 0x0f];
|
|
}
|
|
}
|
|
wcs[wpos] = 0;
|
|
return wpos;
|
|
}
|
|
|
|
int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
|
|
{
|
|
if (!wcs || !utf || utflen < 1) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
|
|
if (utflen)
|
|
return utflen - 1;
|
|
errno = ERANGE;
|
|
return -1;
|
|
}
|
|
|
|
#ifdef ENSURE_MSYSTEM_IS_SET
|
|
static size_t append_system_bin_dirs(char *path, size_t size)
|
|
{
|
|
#if !defined(RUNTIME_PREFIX) || !defined(HAVE_WPGMPTR)
|
|
return 0;
|
|
#else
|
|
char prefix[32768];
|
|
const char *slash;
|
|
size_t len = xwcstoutf(prefix, _wpgmptr, sizeof(prefix)), off = 0;
|
|
|
|
if (len == 0 || len >= sizeof(prefix) ||
|
|
!(slash = find_last_dir_sep(prefix)))
|
|
return 0;
|
|
/* strip trailing `git.exe` */
|
|
len = slash - prefix;
|
|
|
|
/* strip trailing `cmd` or `mingw64\bin` or `mingw32\bin` or `bin` or `libexec\git-core` */
|
|
if (strip_suffix_mem(prefix, &len, "\\mingw64\\libexec\\git-core") ||
|
|
strip_suffix_mem(prefix, &len, "\\mingw64\\bin"))
|
|
off += xsnprintf(path + off, size - off,
|
|
"%.*s\\mingw64\\bin;", (int)len, prefix);
|
|
else if (strip_suffix_mem(prefix, &len, "\\mingw32\\libexec\\git-core") ||
|
|
strip_suffix_mem(prefix, &len, "\\mingw32\\bin"))
|
|
off += xsnprintf(path + off, size - off,
|
|
"%.*s\\mingw32\\bin;", (int)len, prefix);
|
|
else if (strip_suffix_mem(prefix, &len, "\\cmd") ||
|
|
strip_suffix_mem(prefix, &len, "\\bin") ||
|
|
strip_suffix_mem(prefix, &len, "\\libexec\\git-core"))
|
|
off += xsnprintf(path + off, size - off,
|
|
"%.*s\\mingw%d\\bin;", (int)len, prefix,
|
|
(int)(sizeof(void *) * 8));
|
|
else
|
|
return 0;
|
|
|
|
off += xsnprintf(path + off, size - off,
|
|
"%.*s\\usr\\bin;", (int)len, prefix);
|
|
return off;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
static int is_system32_path(const char *path)
|
|
{
|
|
WCHAR system32[MAX_LONG_PATH], wpath[MAX_LONG_PATH];
|
|
|
|
if (xutftowcs_long_path(wpath, path) < 0 ||
|
|
!GetSystemDirectoryW(system32, ARRAY_SIZE(system32)) ||
|
|
_wcsicmp(system32, wpath))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void setup_windows_environment(void)
|
|
{
|
|
char *tmp = getenv("TMPDIR");
|
|
|
|
/* on Windows it is TMP and TEMP */
|
|
if (!tmp) {
|
|
if (!(tmp = getenv("TMP")))
|
|
tmp = getenv("TEMP");
|
|
if (tmp) {
|
|
setenv("TMPDIR", tmp, 1);
|
|
tmp = getenv("TMPDIR");
|
|
}
|
|
}
|
|
|
|
if (tmp) {
|
|
/*
|
|
* Convert all dir separators to forward slashes,
|
|
* to help shell commands called from the Git
|
|
* executable (by not mistaking the dir separators
|
|
* for escape characters).
|
|
*/
|
|
convert_slashes(tmp);
|
|
}
|
|
|
|
|
|
/*
|
|
* Make sure TERM is set up correctly to enable auto-color
|
|
* (see color.c .) Use "cygwin" for older OS releases which
|
|
* works correctly with MSYS2 utilities on older consoles.
|
|
*/
|
|
if (!getenv("TERM")) {
|
|
if ((GetVersion() >> 16) < 15063)
|
|
setenv("TERM", "cygwin", 0);
|
|
else {
|
|
setenv("TERM", "xterm-256color", 0);
|
|
setenv("COLORTERM", "truecolor", 0);
|
|
}
|
|
}
|
|
|
|
/* calculate HOME if not set */
|
|
if (!getenv("HOME")) {
|
|
/*
|
|
* try $HOMEDRIVE$HOMEPATH - the home share may be a network
|
|
* location, thus also check if the path exists (i.e. is not
|
|
* disconnected)
|
|
*/
|
|
if ((tmp = getenv("HOMEDRIVE"))) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addstr(&buf, tmp);
|
|
if ((tmp = getenv("HOMEPATH"))) {
|
|
strbuf_addstr(&buf, tmp);
|
|
if (!is_system32_path(buf.buf) &&
|
|
is_directory(buf.buf))
|
|
setenv("HOME", buf.buf, 1);
|
|
else
|
|
tmp = NULL; /* use $USERPROFILE */
|
|
}
|
|
strbuf_release(&buf);
|
|
}
|
|
/* use $USERPROFILE if the home share is not available */
|
|
if (!tmp && (tmp = getenv("USERPROFILE")))
|
|
setenv("HOME", tmp, 1);
|
|
}
|
|
|
|
if (!getenv("PLINK_PROTOCOL"))
|
|
setenv("PLINK_PROTOCOL", "ssh", 0);
|
|
|
|
#ifdef ENSURE_MSYSTEM_IS_SET
|
|
if (!(tmp = getenv("MSYSTEM")) || !tmp[0]) {
|
|
const char *home = getenv("HOME"), *path = getenv("PATH");
|
|
char buf[32768];
|
|
size_t off = 0;
|
|
|
|
xsnprintf(buf, sizeof(buf),
|
|
"MINGW%d", (int)(sizeof(void *) * 8));
|
|
setenv("MSYSTEM", buf, 1);
|
|
|
|
if (home)
|
|
off += xsnprintf(buf + off, sizeof(buf) - off,
|
|
"%s\\bin;", home);
|
|
off += append_system_bin_dirs(buf + off, sizeof(buf) - off);
|
|
if (path)
|
|
off += xsnprintf(buf + off, sizeof(buf) - off,
|
|
"%s", path);
|
|
else if (off > 0)
|
|
buf[off - 1] = '\0';
|
|
else
|
|
buf[0] = '\0';
|
|
setenv("PATH", buf, 1);
|
|
}
|
|
#endif
|
|
|
|
if (!getenv("LC_ALL") && !getenv("LC_CTYPE") && !getenv("LANG"))
|
|
setenv("LC_CTYPE", "C.UTF-8", 1);
|
|
}
|
|
|
|
static PSID get_current_user_sid(void)
|
|
{
|
|
HANDLE token;
|
|
DWORD len = 0;
|
|
PSID result = NULL;
|
|
|
|
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &token))
|
|
return NULL;
|
|
|
|
if (!GetTokenInformation(token, TokenUser, NULL, 0, &len)) {
|
|
TOKEN_USER *info = xmalloc((size_t)len);
|
|
if (GetTokenInformation(token, TokenUser, info, len, &len)) {
|
|
len = GetLengthSid(info->User.Sid);
|
|
result = xmalloc(len);
|
|
if (!CopySid(len, result, info->User.Sid)) {
|
|
error(_("failed to copy SID (%ld)"),
|
|
GetLastError());
|
|
FREE_AND_NULL(result);
|
|
}
|
|
}
|
|
FREE_AND_NULL(info);
|
|
}
|
|
CloseHandle(token);
|
|
|
|
return result;
|
|
}
|
|
|
|
static BOOL user_sid_to_user_name(PSID sid, LPSTR *str)
|
|
{
|
|
SID_NAME_USE pe_use;
|
|
DWORD len_user = 0, len_domain = 0;
|
|
BOOL translate_sid_to_user;
|
|
|
|
/*
|
|
* returns only FALSE, because the string pointers are NULL
|
|
*/
|
|
LookupAccountSidA(NULL, sid, NULL, &len_user, NULL, &len_domain,
|
|
&pe_use);
|
|
/*
|
|
* Alloc needed space of the strings
|
|
*/
|
|
ALLOC_ARRAY((*str), (size_t)len_domain + (size_t)len_user);
|
|
translate_sid_to_user = LookupAccountSidA(NULL, sid,
|
|
(*str) + len_domain, &len_user, *str, &len_domain, &pe_use);
|
|
if (!translate_sid_to_user)
|
|
FREE_AND_NULL(*str);
|
|
else
|
|
(*str)[len_domain] = '/';
|
|
return translate_sid_to_user;
|
|
}
|
|
|
|
static int acls_supported(const char *path)
|
|
{
|
|
size_t offset = offset_1st_component(path);
|
|
WCHAR wroot[MAX_PATH];
|
|
DWORD file_system_flags;
|
|
|
|
if (offset &&
|
|
xutftowcsn(wroot, path, MAX_PATH, offset) > 0 &&
|
|
GetVolumeInformationW(wroot, NULL, 0, NULL, NULL,
|
|
&file_system_flags, NULL, 0))
|
|
return !!(file_system_flags & FILE_PERSISTENT_ACLS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int is_path_owned_by_current_sid(const char *path, struct strbuf *report)
|
|
{
|
|
WCHAR wpath[MAX_PATH];
|
|
PSID sid = NULL;
|
|
PSECURITY_DESCRIPTOR descriptor = NULL;
|
|
DWORD err;
|
|
|
|
static wchar_t home[MAX_PATH];
|
|
|
|
int result = 0;
|
|
|
|
if (xutftowcs_path(wpath, path) < 0)
|
|
return 0;
|
|
|
|
/*
|
|
* On Windows, the home directory is owned by the administrator, but for
|
|
* all practical purposes, it belongs to the user. Do pretend that it is
|
|
* owned by the user.
|
|
*/
|
|
if (!*home) {
|
|
DWORD size = ARRAY_SIZE(home);
|
|
DWORD len = GetEnvironmentVariableW(L"HOME", home, size);
|
|
if (!len || len > size)
|
|
wcscpy(home, L"::N/A::");
|
|
}
|
|
if (!wcsicmp(wpath, home))
|
|
return 1;
|
|
|
|
/* Get the owner SID */
|
|
err = GetNamedSecurityInfoW(wpath, SE_FILE_OBJECT,
|
|
OWNER_SECURITY_INFORMATION |
|
|
DACL_SECURITY_INFORMATION,
|
|
&sid, NULL, NULL, NULL, &descriptor);
|
|
|
|
if (err == ERROR_SUCCESS && sid && IsValidSid(sid)) {
|
|
/* Now, verify that the SID matches the current user's */
|
|
static PSID current_user_sid;
|
|
BOOL is_member;
|
|
|
|
if (!current_user_sid)
|
|
current_user_sid = get_current_user_sid();
|
|
|
|
if (current_user_sid &&
|
|
IsValidSid(current_user_sid) &&
|
|
EqualSid(sid, current_user_sid))
|
|
result = 1;
|
|
else if (IsWellKnownSid(sid, WinBuiltinAdministratorsSid) &&
|
|
CheckTokenMembership(NULL, sid, &is_member) &&
|
|
is_member)
|
|
/*
|
|
* If owned by the Administrators group, and the
|
|
* current user is an administrator, we consider that
|
|
* okay, too.
|
|
*/
|
|
result = 1;
|
|
else if (report &&
|
|
IsWellKnownSid(sid, WinWorldSid) &&
|
|
!acls_supported(path)) {
|
|
/*
|
|
* On FAT32 volumes, ownership is not actually recorded.
|
|
*/
|
|
strbuf_addf(report, "'%s' is on a file system that does "
|
|
"not record ownership\n", path);
|
|
} else if (report) {
|
|
LPSTR str1, str2, str3, str4, to_free1 = NULL,
|
|
to_free3 = NULL, to_local_free2 = NULL,
|
|
to_local_free4 = NULL;
|
|
|
|
if (user_sid_to_user_name(sid, &str1))
|
|
to_free1 = str1;
|
|
else
|
|
str1 = "(inconvertible)";
|
|
if (ConvertSidToStringSidA(sid, &str2))
|
|
to_local_free2 = str2;
|
|
else
|
|
str2 = "(inconvertible)";
|
|
|
|
if (!current_user_sid) {
|
|
str3 = "(none)";
|
|
str4 = "(none)";
|
|
}
|
|
else if (!IsValidSid(current_user_sid)) {
|
|
str3 = "(invalid)";
|
|
str4 = "(invalid)";
|
|
} else {
|
|
if (user_sid_to_user_name(current_user_sid,
|
|
&str3))
|
|
to_free3 = str3;
|
|
else
|
|
str3 = "(inconvertible)";
|
|
if (ConvertSidToStringSidA(current_user_sid,
|
|
&str4))
|
|
to_local_free4 = str4;
|
|
else
|
|
str4 = "(inconvertible)";
|
|
}
|
|
strbuf_addf(report,
|
|
"'%s' is owned by:\n"
|
|
"\t%s (%s)\nbut the current user is:\n"
|
|
"\t%s (%s)\n",
|
|
path, str1, str2, str3, str4);
|
|
free(to_free1);
|
|
LocalFree(to_local_free2);
|
|
free(to_free3);
|
|
LocalFree(to_local_free4);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We can release the security descriptor struct only now because `sid`
|
|
* actually points into this struct.
|
|
*/
|
|
if (descriptor)
|
|
LocalFree(descriptor);
|
|
|
|
return result;
|
|
}
|
|
|
|
int is_valid_win32_path(const char *path, int allow_literal_nul)
|
|
{
|
|
const char *p = path;
|
|
int preceding_space_or_period = 0, i = 0, periods = 0;
|
|
|
|
if (!protect_ntfs)
|
|
return 1;
|
|
|
|
skip_dos_drive_prefix((char **)&path);
|
|
goto segment_start;
|
|
|
|
for (;;) {
|
|
char c = *(path++);
|
|
switch (c) {
|
|
case '\0':
|
|
case '/': case '\\':
|
|
/* cannot end in ` ` or `.`, except for `.` and `..` */
|
|
if (preceding_space_or_period &&
|
|
(i != periods || periods > 2))
|
|
return 0;
|
|
if (!c)
|
|
return 1;
|
|
|
|
i = periods = preceding_space_or_period = 0;
|
|
|
|
segment_start:
|
|
switch (*path) {
|
|
case 'a': case 'A': /* AUX */
|
|
if (((c = path[++i]) != 'u' && c != 'U') ||
|
|
((c = path[++i]) != 'x' && c != 'X')) {
|
|
not_a_reserved_name:
|
|
path += i;
|
|
continue;
|
|
}
|
|
break;
|
|
case 'c': case 'C':
|
|
/* COM1 ... COM9, CON, CONIN$, CONOUT$ */
|
|
if ((c = path[++i]) != 'o' && c != 'O')
|
|
goto not_a_reserved_name;
|
|
c = path[++i];
|
|
if (c == 'm' || c == 'M') { /* COM1 ... COM9 */
|
|
c = path[++i];
|
|
if (c < '1' || c > '9')
|
|
goto not_a_reserved_name;
|
|
} else if (c == 'n' || c == 'N') { /* CON */
|
|
c = path[i + 1];
|
|
if ((c == 'i' || c == 'I') &&
|
|
((c = path[i + 2]) == 'n' ||
|
|
c == 'N') &&
|
|
path[i + 3] == '$')
|
|
i += 3; /* CONIN$ */
|
|
else if ((c == 'o' || c == 'O') &&
|
|
((c = path[i + 2]) == 'u' ||
|
|
c == 'U') &&
|
|
((c = path[i + 3]) == 't' ||
|
|
c == 'T') &&
|
|
path[i + 4] == '$')
|
|
i += 4; /* CONOUT$ */
|
|
} else
|
|
goto not_a_reserved_name;
|
|
break;
|
|
case 'l': case 'L': /* LPT<N> */
|
|
if (((c = path[++i]) != 'p' && c != 'P') ||
|
|
((c = path[++i]) != 't' && c != 'T') ||
|
|
!isdigit(path[++i]))
|
|
goto not_a_reserved_name;
|
|
break;
|
|
case 'n': case 'N': /* NUL */
|
|
if (((c = path[++i]) != 'u' && c != 'U') ||
|
|
((c = path[++i]) != 'l' && c != 'L') ||
|
|
(allow_literal_nul &&
|
|
!path[i + 1] && p == path))
|
|
goto not_a_reserved_name;
|
|
break;
|
|
case 'p': case 'P': /* PRN */
|
|
if (((c = path[++i]) != 'r' && c != 'R') ||
|
|
((c = path[++i]) != 'n' && c != 'N'))
|
|
goto not_a_reserved_name;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* So far, this looks like a reserved name. Let's see
|
|
* whether it actually is one: trailing spaces, a file
|
|
* extension, or an NTFS Alternate Data Stream do not
|
|
* matter, the name is still reserved if any of those
|
|
* follow immediately after the actual name.
|
|
*/
|
|
i++;
|
|
if (path[i] == ' ') {
|
|
preceding_space_or_period = 1;
|
|
while (path[++i] == ' ')
|
|
; /* skip all spaces */
|
|
}
|
|
|
|
c = path[i];
|
|
if (c && c != '.' && c != ':' && !is_xplatform_dir_sep(c))
|
|
goto not_a_reserved_name;
|
|
|
|
/* contains reserved name */
|
|
return 0;
|
|
case '.':
|
|
periods++;
|
|
/* fallthru */
|
|
case ' ':
|
|
preceding_space_or_period = 1;
|
|
i++;
|
|
continue;
|
|
case ':': /* DOS drive prefix was already skipped */
|
|
case '<': case '>': case '"': case '|': case '?': case '*':
|
|
/* illegal character */
|
|
return 0;
|
|
default:
|
|
if (c > '\0' && c < '\x20')
|
|
/* illegal character */
|
|
return 0;
|
|
}
|
|
preceding_space_or_period = 0;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
int handle_long_path(wchar_t *path, int len, int max_path, int expand)
|
|
{
|
|
int result;
|
|
wchar_t buf[MAX_LONG_PATH];
|
|
|
|
/*
|
|
* we don't need special handling if path is relative to the current
|
|
* directory, and current directory + path don't exceed the desired
|
|
* max_path limit. This should cover > 99 % of cases with minimal
|
|
* performance impact (git almost always uses relative paths).
|
|
*/
|
|
if ((len < 2 || (!is_dir_sep(path[0]) && path[1] != ':')) &&
|
|
(current_directory_len + len < max_path))
|
|
return len;
|
|
|
|
/*
|
|
* handle everything else:
|
|
* - absolute paths: "C:\dir\file"
|
|
* - absolute UNC paths: "\\server\share\dir\file"
|
|
* - absolute paths on current drive: "\dir\file"
|
|
* - relative paths on other drive: "X:file"
|
|
* - prefixed paths: "\\?\...", "\\.\..."
|
|
*/
|
|
|
|
/* convert to absolute path using GetFullPathNameW */
|
|
result = GetFullPathNameW(path, MAX_LONG_PATH, buf, NULL);
|
|
if (!result) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* return absolute path if it fits within max_path (even if
|
|
* "cwd + path" doesn't due to '..' components)
|
|
*/
|
|
if (result < max_path) {
|
|
/* Be careful not to add a drive prefix if there was none */
|
|
if (is_wdir_sep(path[0]) &&
|
|
!is_wdir_sep(buf[0]) && buf[1] == L':' && is_wdir_sep(buf[2]))
|
|
wcscpy(path, buf + 2);
|
|
else
|
|
wcscpy(path, buf);
|
|
return result;
|
|
}
|
|
|
|
/* error out if we shouldn't expand the path or buf is too small */
|
|
if (!expand || result >= MAX_LONG_PATH - 6) {
|
|
errno = ENAMETOOLONG;
|
|
return -1;
|
|
}
|
|
|
|
/* prefix full path with "\\?\" or "\\?\UNC\" */
|
|
if (buf[0] == '\\') {
|
|
/* ...unless already prefixed */
|
|
if (buf[1] == '\\' && (buf[2] == '?' || buf[2] == '.'))
|
|
return len;
|
|
|
|
wcscpy(path, L"\\\\?\\UNC\\");
|
|
wcscpy(path + 8, buf + 2);
|
|
return result + 6;
|
|
} else {
|
|
wcscpy(path, L"\\\\?\\");
|
|
wcscpy(path + 4, buf);
|
|
return result + 4;
|
|
}
|
|
}
|
|
|
|
#if !defined(_MSC_VER)
|
|
/*
|
|
* Disable MSVCRT command line wildcard expansion (__getmainargs called from
|
|
* mingw startup code, see init.c in mingw runtime).
|
|
*/
|
|
int _CRT_glob = 0;
|
|
#endif
|
|
|
|
static NORETURN void die_startup(void)
|
|
{
|
|
fputs("fatal: not enough memory for initialization", stderr);
|
|
exit(128);
|
|
}
|
|
|
|
static void *malloc_startup(size_t size)
|
|
{
|
|
void *result = malloc(size);
|
|
if (!result)
|
|
die_startup();
|
|
return result;
|
|
}
|
|
|
|
static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
|
|
{
|
|
len = xwcstoutf(buffer, wcs, len) + 1;
|
|
return memcpy(malloc_startup(len), buffer, len);
|
|
}
|
|
|
|
static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd,
|
|
DWORD desired_access, DWORD flags)
|
|
{
|
|
DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING;
|
|
wchar_t buf[MAX_PATH];
|
|
DWORD max = ARRAY_SIZE(buf);
|
|
HANDLE handle;
|
|
DWORD ret = GetEnvironmentVariableW(key, buf, max);
|
|
|
|
if (!ret || ret >= max)
|
|
return;
|
|
|
|
/* make sure this does not leak into child processes */
|
|
SetEnvironmentVariableW(key, NULL);
|
|
if (!wcscmp(buf, L"off")) {
|
|
close(fd);
|
|
handle = GetStdHandle(std_id);
|
|
if (handle != INVALID_HANDLE_VALUE)
|
|
CloseHandle(handle);
|
|
return;
|
|
}
|
|
if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) {
|
|
handle = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
if (handle == INVALID_HANDLE_VALUE) {
|
|
close(fd);
|
|
handle = GetStdHandle(std_id);
|
|
if (handle != INVALID_HANDLE_VALUE)
|
|
CloseHandle(handle);
|
|
} else {
|
|
int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
|
|
SetStdHandle(std_id, handle);
|
|
dup2(new_fd, fd);
|
|
/* do *not* close the new_fd: that would close stdout */
|
|
}
|
|
return;
|
|
}
|
|
handle = CreateFileW(buf, desired_access, 0, NULL, create_flag,
|
|
flags, NULL);
|
|
if (handle != INVALID_HANDLE_VALUE) {
|
|
int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
|
|
SetStdHandle(std_id, handle);
|
|
dup2(new_fd, fd);
|
|
close(new_fd);
|
|
}
|
|
}
|
|
|
|
static void maybe_redirect_std_handles(void)
|
|
{
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0,
|
|
GENERIC_READ, FILE_ATTRIBUTE_NORMAL);
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1,
|
|
GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL);
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2,
|
|
GENERIC_WRITE, FILE_FLAG_NO_BUFFERING);
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
#ifdef _DEBUG
|
|
#include <crtdbg.h>
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* We implement wmain() and compile with -municode, which would
|
|
* normally ignore main(), but we call the latter from the former
|
|
* so that we can handle non-ASCII command-line parameters
|
|
* appropriately.
|
|
*
|
|
* To be more compatible with the core git code, we convert
|
|
* argv into UTF8 and pass them directly to main().
|
|
*/
|
|
int wmain(int argc, const wchar_t **wargv)
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|
{
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int i, maxlen, exit_status;
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char *buffer, **save;
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|
const char **argv;
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|
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|
trace2_initialize_clock();
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|
|
|
#ifdef _MSC_VER
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|
#ifdef _DEBUG
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|
_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
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|
#endif
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|
|
|
#ifdef USE_MSVC_CRTDBG
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|
_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
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|
#endif
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|
#endif
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|
|
|
maybe_redirect_std_handles();
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|
fsync_object_files = 1;
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|
|
|
/* determine size of argv and environ conversion buffer */
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|
maxlen = wcslen(wargv[0]);
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|
for (i = 1; i < argc; i++)
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|
maxlen = max(maxlen, wcslen(wargv[i]));
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|
|
|
/* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
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|
maxlen = 3 * maxlen + 1;
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|
buffer = malloc_startup(maxlen);
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|
|
|
/*
|
|
* Create a UTF-8 version of w_argv. Also create a "save" copy
|
|
* to remember all the string pointers because parse_options()
|
|
* will remove claimed items from the argv that we pass down.
|
|
*/
|
|
ALLOC_ARRAY(argv, argc + 1);
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|
ALLOC_ARRAY(save, argc + 1);
|
|
for (i = 0; i < argc; i++)
|
|
argv[i] = save[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
|
|
argv[i] = save[i] = NULL;
|
|
free(buffer);
|
|
|
|
/* fix Windows specific environment settings */
|
|
setup_windows_environment();
|
|
|
|
unset_environment_variables = xstrdup("PERL5LIB");
|
|
|
|
/* initialize critical section for waitpid pinfo_t list */
|
|
InitializeCriticalSection(&pinfo_cs);
|
|
|
|
/* initialize critical section for fscache */
|
|
InitializeCriticalSection(&fscache_cs);
|
|
|
|
/* set up default file mode and file modes for stdin/out/err */
|
|
_fmode = _O_BINARY;
|
|
_setmode(_fileno(stdin), _O_BINARY);
|
|
_setmode(_fileno(stdout), _O_BINARY);
|
|
_setmode(_fileno(stderr), _O_BINARY);
|
|
|
|
/* initialize Unicode console */
|
|
winansi_init();
|
|
|
|
/* init length of current directory for handle_long_path */
|
|
current_directory_len = GetCurrentDirectoryW(0, NULL);
|
|
|
|
/* invoke the real main() using our utf8 version of argv. */
|
|
exit_status = main(argc, argv);
|
|
|
|
for (i = 0; i < argc; i++)
|
|
free(save[i]);
|
|
free(save);
|
|
free(argv);
|
|
|
|
return exit_status;
|
|
}
|
|
|
|
int uname(struct utsname *buf)
|
|
{
|
|
unsigned v = (unsigned)GetVersion();
|
|
memset(buf, 0, sizeof(*buf));
|
|
xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
|
|
xsnprintf(buf->release, sizeof(buf->release),
|
|
"%u.%u", v & 0xff, (v >> 8) & 0xff);
|
|
/* assuming NT variants only.. */
|
|
xsnprintf(buf->version, sizeof(buf->version),
|
|
"%u", (v >> 16) & 0x7fff);
|
|
return 0;
|
|
}
|
|
|
|
int mingw_have_unix_sockets(void)
|
|
{
|
|
SC_HANDLE scm, srvc;
|
|
SERVICE_STATUS_PROCESS status;
|
|
DWORD bytes;
|
|
int ret = 0;
|
|
scm = OpenSCManagerA(NULL, NULL, SC_MANAGER_CONNECT);
|
|
if (scm) {
|
|
srvc = OpenServiceA(scm, "afunix", SERVICE_QUERY_STATUS);
|
|
if (srvc) {
|
|
if(QueryServiceStatusEx(srvc, SC_STATUS_PROCESS_INFO, (LPBYTE)&status, sizeof(SERVICE_STATUS_PROCESS), &bytes))
|
|
ret = status.dwCurrentState == SERVICE_RUNNING;
|
|
CloseServiceHandle(srvc);
|
|
}
|
|
CloseServiceHandle(scm);
|
|
}
|
|
return ret;
|
|
}
|