summaryrefslogtreecommitdiff
path: root/setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'setup.c')
-rw-r--r--setup.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/setup.c b/setup.c
index 3bb0461..2769160 100644
--- a/setup.c
+++ b/setup.c
@@ -325,6 +325,9 @@ const char *setup_git_directory_gently(int *nongit_ok)
const char *gitdirenv;
const char *gitfile_dir;
int len, offset, ceil_offset, root_len;
+ dev_t current_device = 0;
+ int one_filesystem = 1;
+ struct stat buf;
/*
* Let's assume that we are in a git repository.
@@ -392,6 +395,12 @@ const char *setup_git_directory_gently(int *nongit_ok)
* etc.
*/
offset = len = strlen(cwd);
+ one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
+ if (one_filesystem) {
+ if (stat(".", &buf))
+ die_errno("failed to stat '.'");
+ current_device = buf.st_dev;
+ }
for (;;) {
gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
if (gitfile_dir) {
@@ -424,8 +433,27 @@ const char *setup_git_directory_gently(int *nongit_ok)
}
die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
}
- if (chdir(".."))
+ if (one_filesystem) {
+ if (stat("..", &buf)) {
+ cwd[offset] = '\0';
+ die_errno("failed to stat '%s/..'", cwd);
+ }
+ if (buf.st_dev != current_device) {
+ if (nongit_ok) {
+ if (chdir(cwd))
+ die_errno("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
+ }
+ cwd[offset] = '\0';
+ die("Not a git repository (or any parent up to mount parent %s)\n"
+ "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
+ }
+ }
+ if (chdir("..")) {
+ cwd[offset] = '\0';
die_errno("Cannot change to '%s/..'", cwd);
+ }
}
inside_git_dir = 0;