From df2bc04e6937ba35b9a905a65dd0137627b46c8b Mon Sep 17 00:00:00 2001 From: Tian Yuchen Date: Mon, 20 Jul 2026 18:53:35 +0800 Subject: [PATCH] environment: move has_symlinks into repo_config_values Move the global 'has_symlinks' configuration into the repository-specific 'repo_config_values' struct. Introduce 'repo_has_symlinks()' getter for readability. Callers access this configuration by passing in 'repo' when possible, and explicitly fall back to 'the_repository' the rest of the time. Introduce 'platform_has_symlinks()' macro to allow platform specific-customization, primarily to help MinGW. Platforms can override this in their respective headers. Mentored-by: Christian Couder Mentored-by: Ayush Chandekar Mentored-by: Olamide Caleb Bello Signed-off-by: Tian Yuchen Signed-off-by: Junio C Hamano --- apply.c | 2 +- combine-diff.c | 2 +- compat/mingw.c | 17 +++++++++++++---- compat/mingw.h | 3 +++ entry.c | 3 ++- environment.c | 12 ++++++++++-- environment.h | 4 +++- git-compat-util.h | 4 ++++ read-cache.c | 7 ++++--- read-cache.h | 3 +-- 10 files changed, 42 insertions(+), 15 deletions(-) diff --git a/apply.c b/apply.c index edb1502414..b748192ee2 100644 --- a/apply.c +++ b/apply.c @@ -4511,7 +4511,7 @@ static int try_create_file(struct apply_state *state, const char *path, return !!mkdir(path, 0777); } - if (has_symlinks && S_ISLNK(mode)) + if (repo_has_symlinks(state->repo) && S_ISLNK(mode)) /* Although buf:size is counted string, it also is NUL * terminated. */ diff --git a/combine-diff.c b/combine-diff.c index b799862068..80e5c46e9b 100644 --- a/combine-diff.c +++ b/combine-diff.c @@ -1078,7 +1078,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent, /* if symlinks don't work, assume symlink if all parents * are symlinks */ - is_file = has_symlinks; + is_file = repo_has_symlinks(rev->repo); for (i = 0; !is_file && i < num_parent; i++) is_file = !S_ISLNK(elem->parent[i].mode); if (!is_file) diff --git a/compat/mingw.c b/compat/mingw.c index aa7525f419..4781911929 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -7,6 +7,7 @@ #include "config.h" #include "dir.h" #include "environment.h" +#include "repository.h" #include "gettext.h" #include "run-command.h" #include "strbuf.h" @@ -1043,7 +1044,7 @@ int mingw_chdir(const char *dirname) if (xutftowcs_path(wdirname, dirname) < 0) return -1; - if (has_symlinks) { + if (repo_has_symlinks(the_repository)) { HANDLE hnd = CreateFileW(wdirname, 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); @@ -2903,7 +2904,7 @@ int symlink(const char *target, const char *link) int len; /* fail if symlinks are disabled or API is not supported (WinXP) */ - if (!has_symlinks) { + if (!repo_has_symlinks(the_repository)) { errno = ENOSYS; return -1; } @@ -3173,15 +3174,23 @@ static void setup_windows_environment(void) if (!tmp && (tmp = getenv("USERPROFILE"))) setenv("HOME", tmp, 1); } +} +int mingw_platform_has_symlinks(void) +{ + static int has_symlinks = -1; /* * Change 'core.symlinks' default to false, unless native symlinks are * enabled in MSys2 (via 'MSYS=winsymlinks:nativestrict'). Thus we can * run the test suite (which doesn't obey config files) with or without * symlink support. */ - if (!(tmp = getenv("MSYS")) || !strstr(tmp, "winsymlinks:nativestrict")) - has_symlinks = 0; + if (has_symlinks < 0) { + const char *tmp = getenv("MSYS"); + has_symlinks = (tmp && strstr(tmp, "winsymlinks:nativestrict")) ? 1 : 0; + } + + return has_symlinks; } static void get_current_user_sid(PSID *sid, HANDLE *linked_token) diff --git a/compat/mingw.h b/compat/mingw.h index 444daedfa5..df02aeb632 100644 --- a/compat/mingw.h +++ b/compat/mingw.h @@ -208,6 +208,9 @@ void open_in_gdb(void); */ int err_win_to_posix(DWORD winerr); +int mingw_platform_has_symlinks(void); +#define platform_has_symlinks() mingw_platform_has_symlinks() + #ifndef NO_UNIX_SOCKETS int mingw_have_unix_sockets(void); #undef have_unix_sockets diff --git a/entry.c b/entry.c index 7817aee362..5913a8b51f 100644 --- a/entry.c +++ b/entry.c @@ -321,7 +321,8 @@ static int write_entry(struct cache_entry *ce, char *path, struct conv_attrs *ca * We can't make a real symlink; write out a regular file entry * with the symlink destination as its contents. */ - if (!has_symlinks || to_tempfile) + if (!repo_has_symlinks(state->istate && state->istate->repo ? + state->istate->repo : the_repository) || to_tempfile) goto write_file_entry; ret = symlink(new_blob, path); diff --git a/environment.c b/environment.c index 32b110c405..e351043446 100644 --- a/environment.c +++ b/environment.c @@ -43,7 +43,6 @@ static int zlib_compression_seen; int trust_ctime = 1; int check_stat = 1; -int has_symlinks = 1; int minimum_abbrev = 4, default_abbrev = -1; int ignore_case; int assume_unchanged; @@ -148,6 +147,13 @@ int repo_trust_executable_bit(struct repository *repo) : 1; } +int repo_has_symlinks(struct repository *repo) +{ + return repo->initialized + ? repo_config_values(repo)->has_symlinks + : platform_has_symlinks(); +} + int have_git_dir(void) { return startup_info->have_repository @@ -336,7 +342,8 @@ int git_default_core_config(const char *var, const char *value, } if (!strcmp(var, "core.symlinks")) { - has_symlinks = git_config_bool(var, value); + struct repo_config_values *cfg = repo_config_values(the_repository); + cfg->has_symlinks = git_config_bool(var, value); return 0; } @@ -727,5 +734,6 @@ void repo_config_values_init(struct repo_config_values *cfg) cfg->attributes_file = NULL; cfg->apply_sparse_checkout = 0; cfg->trust_executable_bit = 1; + cfg->has_symlinks = platform_has_symlinks(); cfg->branch_track = BRANCH_TRACK_REMOTE; } diff --git a/environment.h b/environment.h index c15456fc0d..8f54c481e9 100644 --- a/environment.h +++ b/environment.h @@ -92,6 +92,7 @@ struct repo_config_values { char *attributes_file; int apply_sparse_checkout; int trust_executable_bit; + int has_symlinks; /* section "branch" config values */ enum branch_track branch_track; @@ -126,6 +127,8 @@ int git_default_core_config(const char *var, const char *value, int repo_trust_executable_bit(struct repository *repo); +int repo_has_symlinks(struct repository *repo); + void repo_config_values_init(struct repo_config_values *cfg); /* @@ -163,7 +166,6 @@ extern char *git_work_tree_cfg; /* Environment bits from configuration mechanism */ extern int trust_ctime; extern int check_stat; -extern int has_symlinks; extern int minimum_abbrev, default_abbrev; extern int ignore_case; extern int assume_unchanged; diff --git a/git-compat-util.h b/git-compat-util.h index 8809776407..a0f901ce79 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -245,6 +245,10 @@ static inline int git_is_dir_sep(int c) #define is_dir_sep git_is_dir_sep #endif +#ifndef platform_has_symlinks +#define platform_has_symlinks() 1 +#endif + #ifndef offset_1st_component static inline int git_offset_1st_component(const char *path) { diff --git a/read-cache.c b/read-cache.c index 90789ff049..046b1e649e 100644 --- a/read-cache.c +++ b/read-cache.c @@ -207,7 +207,7 @@ static unsigned int st_mode_from_ce(const struct cache_entry *ce) { switch (ce->ce_mode & S_IFMT) { case S_IFLNK: - return has_symlinks ? S_IFLNK : (S_IFREG | 0644); + return repo_has_symlinks(the_repository) ? S_IFLNK : (S_IFREG | 0644); case S_IFREG: return (ce->ce_mode & (repo_trust_executable_bit(the_repository) ? 0755 : 0644)) | S_IFREG; case S_IFGITLINK: @@ -325,7 +325,7 @@ static int ce_match_stat_basic(const struct cache_entry *ce, struct stat *st) break; case S_IFLNK: if (!S_ISLNK(st->st_mode) && - (has_symlinks || !S_ISREG(st->st_mode))) + (repo_has_symlinks(the_repository) || !S_ISREG(st->st_mode))) changed |= TYPE_CHANGED; break; case S_IFGITLINK: @@ -740,7 +740,8 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st, ce->ce_flags |= CE_INTENT_TO_ADD; - if (repo_trust_executable_bit(istate->repo) && has_symlinks) { + if (repo_trust_executable_bit(istate->repo) && + repo_has_symlinks(istate->repo)) { ce->ce_mode = create_ce_mode(st_mode); } else { /* If there is an existing entry, pick the mode bits and type diff --git a/read-cache.h b/read-cache.h index 4b54cfc57c..ab9d40aa81 100644 --- a/read-cache.h +++ b/read-cache.h @@ -17,8 +17,7 @@ static inline unsigned int ce_mode_from_stat(struct repository *repo, const struct cache_entry *ce, unsigned int mode) { - extern int has_symlinks; - if (S_ISREG(mode) && !has_symlinks && + if (S_ISREG(mode) && !repo_has_symlinks(repo) && ce && S_ISLNK(ce->ce_mode)) return ce->ce_mode; if (S_ISREG(mode) && !repo_trust_executable_bit(repo)) {