From 457f06d68e427bbf4f1a921877441a622a05e5c4 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Thu, 22 Dec 2005 23:13:56 +0100 Subject: [PATCH] Introduce core.sharedrepository If the config variable 'core.sharedrepository' is set, the directories $GIT_DIR/objects/ $GIT_DIR/objects/?? $GIT_DIR/objects/pack $GIT_DIR/refs $GIT_DIR/refs/heads $GIT_DIR/refs/heads/tags are set group writable (and g+s, since the git group may be not the primary group of all users). Since all files are written as lock files first, and then moved to their destination, they do not have to be group writable. Indeed, if this leads to problems you found a bug. Note that -- as in my first attempt -- the config variable is set in the function which checks the repository format. If this were done in git_default_config instead, a lot of programs would need to be modified to call git_config(git_default_config) first. [jc: git variables should be in environment.c unless there is a compelling reason to do otherwise.] Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- cache.h | 2 ++ environment.c | 1 + setup.c | 2 ++ sha1_file.c | 32 +++++++++++++++++++++++++++++++- 4 files changed, 36 insertions(+), 1 deletion(-) diff --git a/cache.h b/cache.h index cb87becb3..a99fb3ce7 100644 --- a/cache.h +++ b/cache.h @@ -159,6 +159,7 @@ extern void rollback_index_file(struct cache_file *); extern int trust_executable_bit; extern int only_use_symrefs; extern int diff_rename_limit_default; +extern int shared_repository; #define GIT_REPO_VERSION 0 extern int repository_format_version; @@ -183,6 +184,7 @@ extern const unsigned char null_sha1[20]; int git_mkstemp(char *path, size_t n, const char *template); +int adjust_shared_perm(const char *path); int safe_create_leading_directories(char *path); char *safe_strncpy(char *, const char *, size_t); char *enter_repo(char *path, int strict); diff --git a/environment.c b/environment.c index 0886ad38f..0596fc647 100644 --- a/environment.c +++ b/environment.c @@ -15,6 +15,7 @@ int trust_executable_bit = 1; int only_use_symrefs = 0; int repository_format_version = 0; char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8"; +int shared_repository = 0; static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file; diff --git a/setup.c b/setup.c index d3556edf1..36ede3d87 100644 --- a/setup.c +++ b/setup.c @@ -180,6 +180,8 @@ int check_repository_format_version(const char *var, const char *value) { if (strcmp(var, "core.repositoryformatversion") == 0) repository_format_version = git_config_int(var, value); + else if (strcmp(var, "core.sharedrepository") == 0) + shared_repository = git_config_bool(var, value); return 0; } diff --git a/sha1_file.c b/sha1_file.c index 6b7577dbc..8bebbb255 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -48,6 +48,29 @@ int get_sha1_hex(const char *hex, unsigned char *sha1) return 0; } +int adjust_shared_perm(const char *path) +{ + struct stat st; + int mode; + + if (!shared_repository) + return 0; + if (lstat(path, &st) < 0) + return -1; + mode = st.st_mode; + if (mode & S_IRUSR) + mode |= S_IRGRP; + if (mode & S_IWUSR) + mode |= S_IWGRP; + if (mode & S_IXUSR) + mode |= S_IXGRP; + if (S_ISDIR(mode)) + mode |= S_ISGID; + if (chmod(path, mode) < 0) + return -2; + return 0; +} + int safe_create_leading_directories(char *path) { char *pos = path; @@ -59,11 +82,16 @@ int safe_create_leading_directories(char *path) if (!pos) break; *pos = 0; - if (mkdir(path, 0777) < 0) + if (mkdir(path, 0777) < 0) { if (errno != EEXIST) { *pos = '/'; return -1; } + } + else if (adjust_shared_perm(path)) { + *pos = '/'; + return -2; + } *pos++ = '/'; } return 0; @@ -1255,6 +1283,8 @@ static int link_temp_to_file(const char *tmpfile, char *filename) if (dir) { *dir = 0; mkdir(filename, 0777); + if (adjust_shared_perm(filename)) + return -2; *dir = '/'; if (!link(tmpfile, filename)) return 0; -- 2.30.2