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lockfile.c: add a new public function unable_to_lock_message 

Introducing a new unable_to_lock_message helper, which has nicer
semantics than unable_to_lock_error and cleans up lockfile.c a little.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Michael Haggerty <mhagger@alum.mit.edu>
This commit is contained in:
Ronnie Sahlberg 2014-06-20 07:42:47 -07:00 committed by Junio C Hamano
parent 995f8746bc
commit 6af926e8bc
2 changed files with 14 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
cache.h
View File

@ -559,6 +559,8 @@ struct lock_file {
#define LOCK_DIE_ON_ERROR 1
#define LOCK_NODEREF 2
extern int unable_to_lock_error(const char *path, int err);
extern void unable_to_lock_message(const char *path, int err,
struct strbuf *buf);
extern NORETURN void unable_to_lock_index_die(const char *path, int err);
extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);

22
lockfile.c
View File

@ -157,33 +157,35 @@ static int lock_file(struct lock_file *lk, const char *path, int flags)
return lk->fd;
}
static char *unable_to_lock_message(const char *path, int err)
void unable_to_lock_message(const char *path, int err, struct strbuf *buf)
{
struct strbuf buf = STRBUF_INIT;
if (err == EEXIST) {
strbuf_addf(&buf, "Unable to create '%s.lock': %s.\n\n"
strbuf_addf(buf, "Unable to create '%s.lock': %s.\n\n"
"If no other git process is currently running, this probably means a\n"
"git process crashed in this repository earlier. Make sure no other git\n"
"process is running and remove the file manually to continue.",
absolute_path(path), strerror(err));
} else
strbuf_addf(&buf, "Unable to create '%s.lock': %s",
strbuf_addf(buf, "Unable to create '%s.lock': %s",
absolute_path(path), strerror(err));
return strbuf_detach(&buf, NULL);
}
int unable_to_lock_error(const char *path, int err)
{
char *msg = unable_to_lock_message(path, err);
error("%s", msg);
free(msg);
struct strbuf buf = STRBUF_INIT;
unable_to_lock_message(path, err, &buf);
error("%s", buf.buf);
strbuf_release(&buf);
return -1;
}
NORETURN void unable_to_lock_index_die(const char *path, int err)
{
die("%s", unable_to_lock_message(path, err));
struct strbuf buf = STRBUF_INIT;
unable_to_lock_message(path, err, &buf);
die("%s", buf.buf);
}
int hold_lock_file_for_update(struct lock_file *lk, const char *path, int flags)