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authorJunio C Hamano <gitster@pobox.com>2007-07-01 20:10:42 (GMT)
committerJunio C Hamano <gitster@pobox.com>2007-07-01 20:10:42 (GMT)
commit0305b636542c8c137ed7c82fee90db8d3621118c (patch)
tree3a2a5e7a2b814b2f96c5edd681768706b9b3a048 /setup.c
parentcd5ada993d6a992eaed1c416f9a2ed6ba9c4cb6d (diff)
parent9489d0f197185d584294aa99a09a1b3c5ebb25e0 (diff)
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Merge branch 'ei/worktree+filter'
* ei/worktree+filter: filter-branch: always export GIT_DIR if it is set setup_git_directory: fix segfault if repository is found in cwd test GIT_WORK_TREE extend rev-parse test for --is-inside-work-tree Use new semantics of is_bare/inside_git_dir/inside_work_tree introduce GIT_WORK_TREE to specify the work tree test git rev-parse rev-parse: introduce --is-bare-repository rev-parse: document --is-inside-git-dir
Diffstat (limited to 'setup.c')
-rw-r--r--setup.c218
1 files changed, 162 insertions, 56 deletions
diff --git a/setup.c b/setup.c
index 14f62c4..01f74d4 100644
--- a/setup.c
+++ b/setup.c
@@ -95,7 +95,7 @@ void verify_non_filename(const char *prefix, const char *arg)
const char *name;
struct stat st;
- if (is_inside_git_dir())
+ if (!is_inside_work_tree() || is_inside_git_dir())
return;
if (*arg == '-')
return; /* flag */
@@ -174,41 +174,96 @@ static int inside_git_dir = -1;
int is_inside_git_dir(void)
{
- if (inside_git_dir < 0) {
- char buffer[1024];
-
- if (is_bare_repository())
- return (inside_git_dir = 1);
- if (getcwd(buffer, sizeof(buffer))) {
- const char *git_dir = get_git_dir(), *cwd = buffer;
- while (*git_dir && *git_dir == *cwd) {
- git_dir++;
- cwd++;
- }
- inside_git_dir = !*git_dir;
- } else
- inside_git_dir = 0;
+ if (inside_git_dir >= 0)
+ return inside_git_dir;
+ die("BUG: is_inside_git_dir called before setup_git_directory");
+}
+
+static int inside_work_tree = -1;
+
+int is_inside_work_tree(void)
+{
+ if (inside_git_dir >= 0)
+ return inside_work_tree;
+ die("BUG: is_inside_work_tree called before setup_git_directory");
+}
+
+static char *gitworktree_config;
+
+static int git_setup_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "core.worktree")) {
+ if (gitworktree_config)
+ strlcpy(gitworktree_config, value, PATH_MAX);
+ return 0;
}
- return inside_git_dir;
+ return git_default_config(var, value);
}
const char *setup_git_directory_gently(int *nongit_ok)
{
static char cwd[PATH_MAX+1];
- const char *gitdirenv;
- int len, offset;
+ char worktree[PATH_MAX+1], gitdir[PATH_MAX+1];
+ const char *gitdirenv, *gitworktree;
+ int wt_rel_gitdir = 0;
- /*
- * If GIT_DIR is set explicitly, we're not going
- * to do any discovery, but we still do repository
- * validation.
- */
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
- if (gitdirenv) {
- if (PATH_MAX - 40 < strlen(gitdirenv))
- die("'$%s' too big", GIT_DIR_ENVIRONMENT);
- if (is_git_directory(gitdirenv))
+ if (!gitdirenv) {
+ int len, offset;
+
+ if (!getcwd(cwd, sizeof(cwd)-1) || cwd[0] != '/')
+ die("Unable to read current working directory");
+
+ offset = len = strlen(cwd);
+ for (;;) {
+ if (is_git_directory(".git"))
+ break;
+ if (offset == 0) {
+ offset = -1;
+ break;
+ }
+ chdir("..");
+ while (cwd[--offset] != '/')
+ ; /* do nothing */
+ }
+
+ if (offset >= 0) {
+ inside_work_tree = 1;
+ git_config(git_default_config);
+ if (offset == len) {
+ inside_git_dir = 0;
+ return NULL;
+ }
+
+ cwd[len++] = '/';
+ cwd[len] = '\0';
+ inside_git_dir = !prefixcmp(cwd + offset + 1, ".git/");
+ return cwd + offset + 1;
+ }
+
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
+ if (!is_git_directory(".")) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
+ }
+ die("Not a git repository");
+ }
+ setenv(GIT_DIR_ENVIRONMENT, cwd, 1);
+ gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
+ if (!gitdirenv)
+ die("getenv after setenv failed");
+ }
+
+ if (PATH_MAX - 40 < strlen(gitdirenv)) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
return NULL;
+ }
+ die("$%s too big", GIT_DIR_ENVIRONMENT);
+ }
+ if (!is_git_directory(gitdirenv)) {
if (nongit_ok) {
*nongit_ok = 1;
return NULL;
@@ -218,41 +273,92 @@ const char *setup_git_directory_gently(int *nongit_ok)
if (!getcwd(cwd, sizeof(cwd)-1) || cwd[0] != '/')
die("Unable to read current working directory");
+ if (chdir(gitdirenv)) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
+ }
+ die("Cannot change directory to $%s '%s'",
+ GIT_DIR_ENVIRONMENT, gitdirenv);
+ }
+ if (!getcwd(gitdir, sizeof(gitdir)-1) || gitdir[0] != '/')
+ die("Unable to read current working directory");
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
- offset = len = strlen(cwd);
- for (;;) {
- if (is_git_directory(".git"))
- break;
- chdir("..");
- do {
- if (!offset) {
- if (is_git_directory(cwd)) {
- if (chdir(cwd))
- die("Cannot come back to cwd");
- setenv(GIT_DIR_ENVIRONMENT, cwd, 1);
- inside_git_dir = 1;
- return NULL;
- }
- if (nongit_ok) {
- if (chdir(cwd))
- die("Cannot come back to cwd");
- *nongit_ok = 1;
- return NULL;
- }
- die("Not a git repository");
+ /*
+ * In case there is a work tree we may change the directory,
+ * therefore make GIT_DIR an absolute path.
+ */
+ if (gitdirenv[0] != '/') {
+ setenv(GIT_DIR_ENVIRONMENT, gitdir, 1);
+ gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
+ if (!gitdirenv)
+ die("getenv after setenv failed");
+ if (PATH_MAX - 40 < strlen(gitdirenv)) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
}
- } while (cwd[--offset] != '/');
+ die("$%s too big after expansion to absolute path",
+ GIT_DIR_ENVIRONMENT);
+ }
+ }
+
+ strcat(cwd, "/");
+ strcat(gitdir, "/");
+ inside_git_dir = !prefixcmp(cwd, gitdir);
+
+ gitworktree = getenv(GIT_WORK_TREE_ENVIRONMENT);
+ if (!gitworktree) {
+ gitworktree_config = worktree;
+ worktree[0] = '\0';
+ }
+ git_config(git_setup_config);
+ if (!gitworktree) {
+ gitworktree_config = NULL;
+ if (worktree[0])
+ gitworktree = worktree;
+ if (gitworktree && gitworktree[0] != '/')
+ wt_rel_gitdir = 1;
+ }
+
+ if (wt_rel_gitdir && chdir(gitdirenv))
+ die("Cannot change directory to $%s '%s'",
+ GIT_DIR_ENVIRONMENT, gitdirenv);
+ if (gitworktree && chdir(gitworktree)) {
+ if (nongit_ok) {
+ if (wt_rel_gitdir && chdir(cwd))
+ die("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
+ }
+ if (wt_rel_gitdir)
+ die("Cannot change directory to working tree '%s'"
+ " from $%s", gitworktree, GIT_DIR_ENVIRONMENT);
+ else
+ die("Cannot change directory to working tree '%s'",
+ gitworktree);
}
+ if (!getcwd(worktree, sizeof(worktree)-1) || worktree[0] != '/')
+ die("Unable to read current working directory");
+ strcat(worktree, "/");
+ inside_work_tree = !prefixcmp(cwd, worktree);
- if (offset == len)
+ if (gitworktree && inside_work_tree && !prefixcmp(worktree, gitdir) &&
+ strcmp(worktree, gitdir)) {
+ inside_git_dir = 0;
+ }
+
+ if (!inside_work_tree) {
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
return NULL;
+ }
- /* Make "offset" point to past the '/', and add a '/' at the end */
- offset++;
- cwd[len++] = '/';
- cwd[len] = 0;
- inside_git_dir = !prefixcmp(cwd + offset, ".git/");
- return cwd + offset;
+ if (!strcmp(cwd, worktree))
+ return NULL;
+ return cwd+strlen(worktree);
}
int git_config_perm(const char *var, const char *value)