#include "cache.h"
+#include "dir.h"
+
+static int inside_git_dir = -1;
+static int inside_work_tree = -1;
const char *prefix_path(const char *prefix, int len, const char *path)
{
if (len) {
int speclen = strlen(path);
char *n = xmalloc(speclen + len + 1);
-
+
memcpy(n, prefix, len);
memcpy(n + len, path, speclen+1);
path = n;
return path;
}
-/*
+/*
* Unlike prefix_path, this should be used if the named file does
* not have to interact with index entry; i.e. name of a random file
* on the filesystem.
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 */
return 1;
}
-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)
+ inside_git_dir = is_inside_dir(get_git_dir());
return inside_git_dir;
}
+int is_inside_work_tree(void)
+{
+ if (inside_work_tree < 0)
+ inside_work_tree = is_inside_dir(get_git_work_tree());
+ return inside_work_tree;
+}
+
+/*
+ * If no worktree was given, and we are outside of a default work tree,
+ * now is the time to set it.
+ *
+ * In other words, if the user calls git with something like
+ *
+ * git --git-dir=/some/where/else/.git bla
+ *
+ * default to /some/where/else as working directory; if the specified
+ * git-dir does not end in "/.git", the cwd is used as working directory.
+ */
+const char *set_work_tree(const char *dir)
+{
+ char dir_buffer[PATH_MAX], *rel = NULL;
+ static char buffer[PATH_MAX + 1];
+ int len, suffix_len = strlen(DEFAULT_GIT_DIR_ENVIRONMENT) + 1;
+
+ /* strip the variable 'dir' of the postfix "/.git" if it has it */
+ len = strlen(dir);
+ if (len > suffix_len &&
+ !strcmp(dir + len - suffix_len, "/" DEFAULT_GIT_DIR_ENVIRONMENT)) {
+ if ((len - suffix_len) >= sizeof(dir_buffer))
+ die("directory name too long");
+ memcpy(dir_buffer, dir, len - suffix_len);
+ dir_buffer[len - suffix_len] = '\0';
+
+ /* are we inside the default work tree? */
+ rel = get_relative_cwd(buffer, sizeof(buffer), dir_buffer);
+ }
+
+ /* if rel is set, the cwd is _not_ the current working tree */
+ if (rel && *rel) {
+ if (!is_absolute_path(dir))
+ set_git_dir(make_absolute_path(dir));
+ dir = dir_buffer;
+ if (chdir(dir))
+ die("cannot chdir to %s: %s", dir, strerror(errno));
+ else
+ strcat(rel, "/");
+ inside_git_dir = 0;
+ } else {
+ rel = NULL;
+ dir = getcwd(buffer, sizeof(buffer));
+ }
+ git_work_tree_cfg = xstrdup(dir);
+ inside_work_tree = 1;
+
+ return rel;
+}
+
+/*
+ * We cannot decide in this function whether we are in the work tree or
+ * not, since the config can only be read _after_ this function was called.
+ */
const char *setup_git_directory_gently(int *nongit_ok)
{
+ const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
static char cwd[PATH_MAX+1];
const char *gitdirenv;
int len, offset;
if (gitdirenv) {
if (PATH_MAX - 40 < strlen(gitdirenv))
die("'$%s' too big", GIT_DIR_ENVIRONMENT);
- if (is_git_directory(gitdirenv))
+ if (is_git_directory(gitdirenv)) {
+ if (!work_tree_env)
+ return set_work_tree(gitdirenv);
return NULL;
+ }
if (nongit_ok) {
*nongit_ok = 1;
return NULL;
die("Not a git repository: '%s'", gitdirenv);
}
- if (!getcwd(cwd, sizeof(cwd)-1) || cwd[0] != '/')
+ if (!getcwd(cwd, sizeof(cwd)-1))
die("Unable to read current working directory");
+ /*
+ * Test in the following order (relative to the cwd):
+ * - .git/
+ * - ./ (bare)
+ * - ../.git/
+ * - ../ (bare)
+ * - ../../.git/
+ * etc.
+ */
offset = len = strlen(cwd);
for (;;) {
- if (is_git_directory(".git"))
+ if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
break;
+ if (is_git_directory(".")) {
+ inside_git_dir = 1;
+ if (!work_tree_env)
+ inside_work_tree = 0;
+ setenv(GIT_DIR_ENVIRONMENT, ".", 1);
+ return NULL;
+ }
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");
} while (cwd[--offset] != '/');
}
+ inside_git_dir = 0;
+ if (!work_tree_env)
+ inside_work_tree = 1;
+ git_work_tree_cfg = xstrndup(cwd, offset);
if (offset == len)
return NULL;
offset++;
cwd[len++] = '/';
cwd[len] = 0;
- inside_git_dir = !prefixcmp(cwd + offset, ".git/");
return cwd + offset;
}
int git_config_perm(const char *var, const char *value)
{
if (value) {
+ int i;
if (!strcmp(value, "umask"))
return PERM_UMASK;
if (!strcmp(value, "group"))
!strcmp(value, "world") ||
!strcmp(value, "everybody"))
return PERM_EVERYBODY;
+ i = atoi(value);
+ if (i > 1)
+ return i;
}
return git_config_bool(var, value);
}
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);
+ 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_perm(var, value);
- return 0;
+ else if (strcmp(var, "core.bare") == 0) {
+ is_bare_repository_cfg = git_config_bool(var, value);
+ if (is_bare_repository_cfg == 1)
+ inside_work_tree = -1;
+ } else if (strcmp(var, "core.worktree") == 0) {
+ if (git_work_tree_cfg)
+ free(git_work_tree_cfg);
+ git_work_tree_cfg = xstrdup(value);
+ inside_work_tree = -1;
+ }
+ return 0;
}
int check_repository_format(void)
{
const char *retval = setup_git_directory_gently(NULL);
check_repository_format();
+
+ /* If the work tree is not the default one, recompute prefix */
+ if (inside_work_tree < 0) {
+ static char buffer[PATH_MAX + 1];
+ char *rel;
+ if (retval && chdir(retval))
+ die ("Could not jump back into original cwd");
+ rel = get_relative_cwd(buffer, PATH_MAX, get_git_work_tree());
+ return rel && *rel ? strcat(rel, "/") : NULL;
+ }
+
return retval;
}