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480d3d6bf9
Traditionally, unpack_trees_options->reset was used to signal that it was okay to delete any untracked files in the way. This was used by `git read-tree --reset`, but then started appearing in other places as well. However, many of the other uses should not be deleting untracked files in the way. Change this value to an enum so that a value of 1 (i.e. "true") can be split into two: UNPACK_RESET_PROTECT_UNTRACKED, UNPACK_RESET_OVERWRITE_UNTRACKED In order to catch accidental misuses (i.e. where folks call it the way they traditionally used to), define the special enum value of UNPACK_RESET_INVALID = 1 which will trigger a BUG(). Modify existing callers so that read-tree --reset reset --hard checkout --force continue using the UNPACK_RESET_OVERWRITE_UNTRACKED logic, while other callers, including am checkout without --force stash (though currently dead code; reset always had a value of 0) numerous callers from rebase/sequencer to reset_head() will use the new UNPACK_RESET_PROTECT_UNTRACKED value. Also, note that it has been reported that 'git checkout <treeish> <pathspec>' currently also allows overwriting untracked files[1]. That case should also be fixed, but it does not use unpack_trees() and thus is outside the scope of the current changes. [1] https://lore.kernel.org/git/15dad590-087e-5a48-9238-5d2826950506@gmail.com/ Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
#ifndef UNPACK_TREES_H
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#define UNPACK_TREES_H
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#include "cache.h"
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#include "strvec.h"
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#include "string-list.h"
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#include "tree-walk.h"
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#define MAX_UNPACK_TREES MAX_TRAVERSE_TREES
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struct cache_entry;
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struct unpack_trees_options;
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struct pattern_list;
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typedef int (*merge_fn_t)(const struct cache_entry * const *src,
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struct unpack_trees_options *options);
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enum unpack_trees_error_types {
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ERROR_WOULD_OVERWRITE = 0,
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ERROR_NOT_UPTODATE_FILE,
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ERROR_NOT_UPTODATE_DIR,
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ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
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ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
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ERROR_BIND_OVERLAP,
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ERROR_WOULD_LOSE_SUBMODULE,
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NB_UNPACK_TREES_ERROR_TYPES,
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WARNING_SPARSE_NOT_UPTODATE_FILE,
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WARNING_SPARSE_UNMERGED_FILE,
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WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN,
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NB_UNPACK_TREES_WARNING_TYPES,
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};
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/*
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* Sets the list of user-friendly error messages to be used by the
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* command "cmd" (either merge or checkout), and show_all_errors to 1.
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*/
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void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
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const char *cmd);
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/*
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* Frees resources allocated by setup_unpack_trees_porcelain().
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*/
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void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
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enum unpack_trees_reset_type {
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UNPACK_RESET_NONE = 0, /* traditional "false" value; still valid */
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UNPACK_RESET_INVALID = 1, /* "true" no longer valid; use below values */
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UNPACK_RESET_PROTECT_UNTRACKED,
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UNPACK_RESET_OVERWRITE_UNTRACKED
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};
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struct unpack_trees_options {
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unsigned int merge,
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update,
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preserve_ignored,
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clone,
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index_only,
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nontrivial_merge,
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trivial_merges_only,
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verbose_update,
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aggressive,
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skip_unmerged,
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initial_checkout,
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diff_index_cached,
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debug_unpack,
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skip_sparse_checkout,
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quiet,
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exiting_early,
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show_all_errors,
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dry_run;
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enum unpack_trees_reset_type reset;
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const char *prefix;
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int cache_bottom;
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struct pathspec *pathspec;
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merge_fn_t fn;
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const char *msgs[NB_UNPACK_TREES_WARNING_TYPES];
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struct strvec msgs_to_free;
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/*
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* Store error messages in an array, each case
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* corresponding to a error message type
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*/
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struct string_list unpack_rejects[NB_UNPACK_TREES_WARNING_TYPES];
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int head_idx;
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int merge_size;
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struct cache_entry *df_conflict_entry;
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void *unpack_data;
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struct index_state *dst_index;
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struct index_state *src_index;
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struct index_state result;
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struct pattern_list *pl; /* for internal use */
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struct dir_struct *dir; /* for internal use only */
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struct checkout_metadata meta;
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};
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int unpack_trees(unsigned n, struct tree_desc *t,
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struct unpack_trees_options *options);
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enum update_sparsity_result {
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UPDATE_SPARSITY_SUCCESS = 0,
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UPDATE_SPARSITY_WARNINGS = 1,
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UPDATE_SPARSITY_INDEX_UPDATE_FAILURES = -1,
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UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES = -2
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};
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enum update_sparsity_result update_sparsity(struct unpack_trees_options *options);
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int verify_uptodate(const struct cache_entry *ce,
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struct unpack_trees_options *o);
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int threeway_merge(const struct cache_entry * const *stages,
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struct unpack_trees_options *o);
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int twoway_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int bind_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int oneway_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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int stash_worktree_untracked_merge(const struct cache_entry * const *src,
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struct unpack_trees_options *o);
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#endif
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