Merge branch 'rs/strbuf-getcwd'
Reduce the use of fixed sized buffer passed to getcwd() calls
by introducing xgetcwd() helper.
* rs/strbuf-getcwd:
use strbuf_add_absolute_path() to add absolute paths
abspath: convert absolute_path() to strbuf
use xgetcwd() to set $GIT_DIR
use xgetcwd() to get the current directory or die
wrapper: add xgetcwd()
abspath: convert real_path_internal() to strbuf
abspath: use strbuf_getcwd() to remember original working directory
setup: convert setup_git_directory_gently_1 et al. to strbuf
unix-sockets: use strbuf_getcwd()
strbuf: add strbuf_getcwd()
diff --git a/Documentation/technical/api-strbuf.txt b/Documentation/technical/api-strbuf.txt
index f9c06a7..430302c 100644
--- a/Documentation/technical/api-strbuf.txt
+++ b/Documentation/technical/api-strbuf.txt
@@ -307,6 +307,16 @@
use it unless you need the correct position in the file
descriptor.
+`strbuf_getcwd`::
+
+ Set the buffer to the path of the current working directory.
+
+`strbuf_add_absolute_path`
+
+ Add a path to a buffer, converting a relative path to an
+ absolute one in the process. Symbolic links are not
+ resolved.
+
`stripspace`::
Strip whitespace from a buffer. The second parameter controls if
diff --git a/abspath.c b/abspath.c
index ca33558..5edb4e7 100644
--- a/abspath.c
+++ b/abspath.c
@@ -33,7 +33,7 @@
*/
static const char *real_path_internal(const char *path, int die_on_error)
{
- static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1];
+ static struct strbuf sb = STRBUF_INIT;
char *retval = NULL;
/*
@@ -41,16 +41,14 @@
* here so that we can chdir() back to it at the end of the
* function:
*/
- char cwd[1024] = "";
-
- int buf_index = 1;
+ struct strbuf cwd = STRBUF_INIT;
int depth = MAXDEPTH;
char *last_elem = NULL;
struct stat st;
/* We've already done it */
- if (path == buf || path == next_buf)
+ if (path == sb.buf)
return path;
if (!*path) {
@@ -60,41 +58,38 @@
goto error_out;
}
- if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) {
- if (die_on_error)
- die("Too long path: %.*s", 60, path);
- else
- goto error_out;
- }
+ strbuf_reset(&sb);
+ strbuf_addstr(&sb, path);
while (depth--) {
- if (!is_directory(buf)) {
- char *last_slash = find_last_dir_sep(buf);
+ if (!is_directory(sb.buf)) {
+ char *last_slash = find_last_dir_sep(sb.buf);
if (last_slash) {
last_elem = xstrdup(last_slash + 1);
- last_slash[1] = '\0';
+ strbuf_setlen(&sb, last_slash - sb.buf + 1);
} else {
- last_elem = xstrdup(buf);
- *buf = '\0';
+ last_elem = xmemdupz(sb.buf, sb.len);
+ strbuf_reset(&sb);
}
}
- if (*buf) {
- if (!*cwd && !getcwd(cwd, sizeof(cwd))) {
+ if (sb.len) {
+ if (!cwd.len && strbuf_getcwd(&cwd)) {
if (die_on_error)
die_errno("Could not get current working directory");
else
goto error_out;
}
- if (chdir(buf)) {
+ if (chdir(sb.buf)) {
if (die_on_error)
- die_errno("Could not switch to '%s'", buf);
+ die_errno("Could not switch to '%s'",
+ sb.buf);
else
goto error_out;
}
}
- if (!getcwd(buf, PATH_MAX)) {
+ if (strbuf_getcwd(&sb)) {
if (die_on_error)
die_errno("Could not get current working directory");
else
@@ -102,48 +97,35 @@
}
if (last_elem) {
- size_t len = strlen(buf);
- if (len + strlen(last_elem) + 2 > PATH_MAX) {
- if (die_on_error)
- die("Too long path name: '%s/%s'",
- buf, last_elem);
- else
- goto error_out;
- }
- if (len && !is_dir_sep(buf[len - 1]))
- buf[len++] = '/';
- strcpy(buf + len, last_elem);
+ if (sb.len && !is_dir_sep(sb.buf[sb.len - 1]))
+ strbuf_addch(&sb, '/');
+ strbuf_addstr(&sb, last_elem);
free(last_elem);
last_elem = NULL;
}
- if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
- ssize_t len = readlink(buf, next_buf, PATH_MAX);
+ if (!lstat(sb.buf, &st) && S_ISLNK(st.st_mode)) {
+ struct strbuf next_sb = STRBUF_INIT;
+ ssize_t len = strbuf_readlink(&next_sb, sb.buf, 0);
if (len < 0) {
if (die_on_error)
- die_errno("Invalid symlink '%s'", buf);
+ die_errno("Invalid symlink '%s'",
+ sb.buf);
else
goto error_out;
}
- if (PATH_MAX <= len) {
- if (die_on_error)
- die("symbolic link too long: %s", buf);
- else
- goto error_out;
- }
- next_buf[len] = '\0';
- buf = next_buf;
- buf_index = 1 - buf_index;
- next_buf = bufs[buf_index];
+ strbuf_swap(&sb, &next_sb);
+ strbuf_release(&next_sb);
} else
break;
}
- retval = buf;
+ retval = sb.buf;
error_out:
free(last_elem);
- if (*cwd && chdir(cwd))
- die_errno("Could not change back to '%s'", cwd);
+ if (cwd.len && chdir(cwd.buf))
+ die_errno("Could not change back to '%s'", cwd.buf);
+ strbuf_release(&cwd);
return retval;
}
@@ -158,54 +140,16 @@
return real_path_internal(path, 0);
}
-static const char *get_pwd_cwd(void)
-{
- static char cwd[PATH_MAX + 1];
- char *pwd;
- struct stat cwd_stat, pwd_stat;
- if (getcwd(cwd, PATH_MAX) == NULL)
- return NULL;
- pwd = getenv("PWD");
- if (pwd && strcmp(pwd, cwd)) {
- stat(cwd, &cwd_stat);
- if ((cwd_stat.st_dev || cwd_stat.st_ino) &&
- !stat(pwd, &pwd_stat) &&
- pwd_stat.st_dev == cwd_stat.st_dev &&
- pwd_stat.st_ino == cwd_stat.st_ino) {
- strlcpy(cwd, pwd, PATH_MAX);
- }
- }
- return cwd;
-}
-
/*
* Use this to get an absolute path from a relative one. If you want
* to resolve links, you should use real_path.
- *
- * If the path is already absolute, then return path. As the user is
- * never meant to free the return value, we're safe.
*/
const char *absolute_path(const char *path)
{
- static char buf[PATH_MAX + 1];
-
- if (!*path) {
- die("The empty string is not a valid path");
- } else if (is_absolute_path(path)) {
- if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
- die("Too long path: %.*s", 60, path);
- } else {
- size_t len;
- const char *fmt;
- const char *cwd = get_pwd_cwd();
- if (!cwd)
- die_errno("Cannot determine the current working directory");
- len = strlen(cwd);
- fmt = (len > 0 && is_dir_sep(cwd[len - 1])) ? "%s%s" : "%s/%s";
- if (snprintf(buf, PATH_MAX, fmt, cwd, path) >= PATH_MAX)
- die("Too long path: %.*s", 60, path);
- }
- return buf;
+ static struct strbuf sb = STRBUF_INIT;
+ strbuf_reset(&sb);
+ strbuf_add_absolute_path(&sb, path);
+ return sb.buf;
}
/*
diff --git a/builtin/init-db.c b/builtin/init-db.c
index 6d8ac2c..587a505 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -426,8 +426,9 @@
static int guess_repository_type(const char *git_dir)
{
- char cwd[PATH_MAX];
const char *slash;
+ char *cwd;
+ int cwd_is_git_dir;
/*
* "GIT_DIR=. git init" is always bare.
@@ -435,9 +436,10 @@
*/
if (!strcmp(".", git_dir))
return 1;
- if (!getcwd(cwd, sizeof(cwd)))
- die_errno(_("cannot tell cwd"));
- if (!strcmp(git_dir, cwd))
+ cwd = xgetcwd();
+ cwd_is_git_dir = !strcmp(git_dir, cwd);
+ free(cwd);
+ if (cwd_is_git_dir)
return 1;
/*
* "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
@@ -535,10 +537,9 @@
usage(init_db_usage[0]);
}
if (is_bare_repository_cfg == 1) {
- static char git_dir[PATH_MAX+1];
-
- setenv(GIT_DIR_ENVIRONMENT,
- getcwd(git_dir, sizeof(git_dir)), argc > 0);
+ char *cwd = xgetcwd();
+ setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0);
+ free(cwd);
}
if (init_shared_repository != -1)
@@ -572,11 +573,8 @@
git_work_tree_cfg = xstrdup(real_path(rel));
free(rel);
}
- if (!git_work_tree_cfg) {
- git_work_tree_cfg = xcalloc(PATH_MAX, 1);
- if (!getcwd(git_work_tree_cfg, PATH_MAX))
- die_errno (_("Cannot access current working directory"));
- }
+ if (!git_work_tree_cfg)
+ git_work_tree_cfg = xgetcwd();
if (work_tree)
set_git_work_tree(work_tree);
else
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index d85e08c..c911b45 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -736,7 +736,7 @@
}
if (!strcmp(arg, "--git-dir")) {
const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
- static char cwd[PATH_MAX];
+ char *cwd;
int len;
if (gitdir) {
puts(gitdir);
@@ -746,10 +746,10 @@
puts(".git");
continue;
}
- if (!getcwd(cwd, PATH_MAX))
- die_errno("unable to get current working directory");
+ cwd = xgetcwd();
len = strlen(cwd);
printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : "");
+ free(cwd);
continue;
}
if (!strcmp(arg, "--resolve-git-dir")) {
diff --git a/dir.c b/dir.c
index fcb6872..bd274a7 100644
--- a/dir.c
+++ b/dir.c
@@ -1507,12 +1507,16 @@
int is_inside_dir(const char *dir)
{
- char cwd[PATH_MAX];
+ char *cwd;
+ int rc;
+
if (!dir)
return 0;
- if (!getcwd(cwd, sizeof(cwd)))
- die_errno("can't find the current directory");
- return dir_inside_of(cwd, dir) >= 0;
+
+ cwd = xgetcwd();
+ rc = (dir_inside_of(cwd, dir) >= 0);
+ free(cwd);
+ return rc;
}
int is_empty_dir(const char *path)
diff --git a/exec_cmd.c b/exec_cmd.c
index 125fa6f..698e752 100644
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -86,11 +86,7 @@
static void add_path(struct strbuf *out, const char *path)
{
if (path && *path) {
- if (is_absolute_path(path))
- strbuf_addstr(out, path);
- else
- strbuf_addstr(out, absolute_path(path));
-
+ strbuf_add_absolute_path(out, path);
strbuf_addch(out, PATH_SEP);
}
}
diff --git a/git-compat-util.h b/git-compat-util.h
index f587749..c150e3f 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -607,6 +607,7 @@
extern int xmkstemp_mode(char *template, int mode);
extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1);
+extern char *xgetcwd(void);
static inline size_t xsize_t(off_t len)
{
diff --git a/git.c b/git.c
index 9c49519..210f1ae 100644
--- a/git.c
+++ b/git.c
@@ -20,7 +20,7 @@
static struct startup_info git_startup_info;
static int use_pager = -1;
-static char orig_cwd[PATH_MAX];
+static char *orig_cwd;
static const char *env_names[] = {
GIT_DIR_ENVIRONMENT,
GIT_WORK_TREE_ENVIRONMENT,
@@ -36,8 +36,7 @@
if (saved_environment)
return;
saved_environment = 1;
- if (!getcwd(orig_cwd, sizeof(orig_cwd)))
- die_errno("cannot getcwd");
+ orig_cwd = xgetcwd();
for (i = 0; i < ARRAY_SIZE(env_names); i++) {
orig_env[i] = getenv(env_names[i]);
if (orig_env[i])
@@ -48,8 +47,9 @@
static void restore_env(void)
{
int i;
- if (*orig_cwd && chdir(orig_cwd))
+ if (orig_cwd && chdir(orig_cwd))
die_errno("could not move to %s", orig_cwd);
+ free(orig_cwd);
for (i = 0; i < ARRAY_SIZE(env_names); i++) {
if (orig_env[i])
setenv(env_names[i], orig_env[i], 1);
@@ -161,9 +161,10 @@
if (envchanged)
*envchanged = 1;
} else if (!strcmp(cmd, "--bare")) {
- static char git_dir[PATH_MAX+1];
+ char *cwd = xgetcwd();
is_bare_repository_cfg = 1;
- setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
+ setenv(GIT_DIR_ENVIRONMENT, cwd, 0);
+ free(cwd);
setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
if (envchanged)
*envchanged = 1;
diff --git a/setup.c b/setup.c
index 793369d..979b13f 100644
--- a/setup.c
+++ b/setup.c
@@ -387,7 +387,7 @@
}
static const char *setup_explicit_git_dir(const char *gitdirenv,
- char *cwd, int len,
+ struct strbuf *cwd,
int *nongit_ok)
{
const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
@@ -434,16 +434,16 @@
if (is_absolute_path(git_work_tree_cfg))
set_git_work_tree(git_work_tree_cfg);
else {
- char core_worktree[PATH_MAX];
+ char *core_worktree;
if (chdir(gitdirenv))
die_errno("Could not chdir to '%s'", gitdirenv);
if (chdir(git_work_tree_cfg))
die_errno("Could not chdir to '%s'", git_work_tree_cfg);
- if (!getcwd(core_worktree, PATH_MAX))
- die_errno("Could not get directory '%s'", git_work_tree_cfg);
- if (chdir(cwd))
+ core_worktree = xgetcwd();
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
set_git_work_tree(core_worktree);
+ free(core_worktree);
}
}
else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) {
@@ -459,21 +459,20 @@
worktree = get_git_work_tree();
/* both get_git_work_tree() and cwd are already normalized */
- if (!strcmp(cwd, worktree)) { /* cwd == worktree */
+ if (!strcmp(cwd->buf, worktree)) { /* cwd == worktree */
set_git_dir(gitdirenv);
free(gitfile);
return NULL;
}
- offset = dir_inside_of(cwd, worktree);
+ offset = dir_inside_of(cwd->buf, worktree);
if (offset >= 0) { /* cwd inside worktree? */
set_git_dir(real_path(gitdirenv));
if (chdir(worktree))
die_errno("Could not chdir to '%s'", worktree);
- cwd[len++] = '/';
- cwd[len] = '\0';
+ strbuf_addch(cwd, '/');
free(gitfile);
- return cwd + offset;
+ return cwd->buf + offset;
}
/* cwd outside worktree */
@@ -483,7 +482,7 @@
}
static const char *setup_discovered_git_dir(const char *gitdir,
- char *cwd, int offset, int len,
+ struct strbuf *cwd, int offset,
int *nongit_ok)
{
if (check_repository_format_gently(gitdir, nongit_ok))
@@ -491,17 +490,17 @@
/* --work-tree is set without --git-dir; use discovered one */
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
- if (offset != len && !is_absolute_path(gitdir))
+ if (offset != cwd->len && !is_absolute_path(gitdir))
gitdir = xstrdup(real_path(gitdir));
- if (chdir(cwd))
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
}
/* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
if (is_bare_repository_cfg > 0) {
- set_git_dir(offset == len ? gitdir : real_path(gitdir));
- if (chdir(cwd))
+ set_git_dir(offset == cwd->len ? gitdir : real_path(gitdir));
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
return NULL;
}
@@ -512,18 +511,18 @@
set_git_dir(gitdir);
inside_git_dir = 0;
inside_work_tree = 1;
- if (offset == len)
+ if (offset == cwd->len)
return NULL;
/* Make "offset" point to past the '/', and add a '/' at the end */
offset++;
- cwd[len++] = '/';
- cwd[len] = 0;
- return cwd + offset;
+ strbuf_addch(cwd, '/');
+ return cwd->buf + offset;
}
/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
-static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
+static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
+ int *nongit_ok)
{
int root_len;
@@ -536,20 +535,20 @@
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
const char *gitdir;
- gitdir = offset == len ? "." : xmemdupz(cwd, offset);
- if (chdir(cwd))
+ gitdir = offset == cwd->len ? "." : xmemdupz(cwd->buf, offset);
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
}
inside_git_dir = 1;
inside_work_tree = 0;
- if (offset != len) {
- if (chdir(cwd))
+ if (offset != cwd->len) {
+ if (chdir(cwd->buf))
die_errno("Cannot come back to cwd");
- root_len = offset_1st_component(cwd);
- cwd[offset > root_len ? offset : root_len] = '\0';
- set_git_dir(cwd);
+ root_len = offset_1st_component(cwd->buf);
+ strbuf_setlen(cwd, offset > root_len ? offset : root_len);
+ set_git_dir(cwd->buf);
}
else
set_git_dir(".");
@@ -617,10 +616,10 @@
{
const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
- static char cwd[PATH_MAX + 1];
+ static struct strbuf cwd = STRBUF_INIT;
const char *gitdirenv, *ret;
char *gitfile;
- int len, offset, offset_parent, ceil_offset = -1;
+ int offset, offset_parent, ceil_offset = -1;
dev_t current_device = 0;
int one_filesystem = 1;
@@ -641,9 +640,9 @@
if (nongit_ok)
*nongit_ok = 0;
- if (!getcwd(cwd, sizeof(cwd) - 1))
+ if (strbuf_getcwd(&cwd))
die_errno("Unable to read current working directory");
- offset = len = strlen(cwd);
+ offset = cwd.len;
/*
* If GIT_DIR is set explicitly, we're not going
@@ -652,7 +651,7 @@
*/
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
if (gitdirenv)
- return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdirenv, &cwd, nongit_ok);
if (env_ceiling_dirs) {
int empty_entry_found = 0;
@@ -660,11 +659,11 @@
string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1);
filter_string_list(&ceiling_dirs, 0,
canonicalize_ceiling_entry, &empty_entry_found);
- ceil_offset = longest_ancestor_length(cwd, &ceiling_dirs);
+ ceil_offset = longest_ancestor_length(cwd.buf, &ceiling_dirs);
string_list_clear(&ceiling_dirs, 0);
}
- if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
+ if (ceil_offset < 0 && has_dos_drive_prefix(cwd.buf))
ceil_offset = 1;
/*
@@ -692,7 +691,7 @@
if (gitdirenv) {
ret = setup_discovered_git_dir(gitdirenv,
- cwd, offset, len,
+ &cwd, offset,
nongit_ok);
free(gitfile);
return ret;
@@ -700,29 +699,31 @@
free(gitfile);
if (is_git_directory("."))
- return setup_bare_git_dir(cwd, offset, len, nongit_ok);
+ return setup_bare_git_dir(&cwd, offset, nongit_ok);
offset_parent = offset;
- while (--offset_parent > ceil_offset && cwd[offset_parent] != '/');
+ while (--offset_parent > ceil_offset && cwd.buf[offset_parent] != '/');
if (offset_parent <= ceil_offset)
- return setup_nongit(cwd, nongit_ok);
+ return setup_nongit(cwd.buf, nongit_ok);
if (one_filesystem) {
- dev_t parent_device = get_device_or_die("..", cwd, offset);
+ dev_t parent_device = get_device_or_die("..", cwd.buf,
+ offset);
if (parent_device != current_device) {
if (nongit_ok) {
- if (chdir(cwd))
+ if (chdir(cwd.buf))
die_errno("Cannot come back to cwd");
*nongit_ok = 1;
return NULL;
}
- cwd[offset] = '\0';
+ strbuf_setlen(&cwd, offset);
die("Not a git repository (or any parent up to mount point %s)\n"
- "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
+ "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
+ cwd.buf);
}
}
if (chdir("..")) {
- cwd[offset] = '\0';
- die_errno("Cannot change to '%s/..'", cwd);
+ strbuf_setlen(&cwd, offset);
+ die_errno("Cannot change to '%s/..'", cwd.buf);
}
offset = offset_parent;
}
diff --git a/sha1_file.c b/sha1_file.c
index 3f70b1d..95afd20 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -350,7 +350,7 @@
return;
}
- strbuf_addstr(&objdirbuf, absolute_path(get_object_directory()));
+ strbuf_add_absolute_path(&objdirbuf, get_object_directory());
normalize_path_copy(objdirbuf.buf, objdirbuf.buf);
alt_copy = xmemdupz(alt, len);
diff --git a/strbuf.c b/strbuf.c
index 33018d8..4d31443 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -406,6 +406,27 @@
return -1;
}
+int strbuf_getcwd(struct strbuf *sb)
+{
+ size_t oldalloc = sb->alloc;
+ size_t guessed_len = 128;
+
+ for (;; guessed_len *= 2) {
+ strbuf_grow(sb, guessed_len);
+ if (getcwd(sb->buf, sb->alloc)) {
+ strbuf_setlen(sb, strlen(sb->buf));
+ return 0;
+ }
+ if (errno != ERANGE)
+ break;
+ }
+ if (oldalloc == 0)
+ strbuf_release(sb);
+ else
+ strbuf_reset(sb);
+ return -1;
+}
+
int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
{
int ch;
@@ -555,6 +576,31 @@
}
}
+void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
+{
+ if (!*path)
+ die("The empty string is not a valid path");
+ if (!is_absolute_path(path)) {
+ struct stat cwd_stat, pwd_stat;
+ size_t orig_len = sb->len;
+ char *cwd = xgetcwd();
+ char *pwd = getenv("PWD");
+ if (pwd && strcmp(pwd, cwd) &&
+ !stat(cwd, &cwd_stat) &&
+ (cwd_stat.st_dev || cwd_stat.st_ino) &&
+ !stat(pwd, &pwd_stat) &&
+ pwd_stat.st_dev == cwd_stat.st_dev &&
+ pwd_stat.st_ino == cwd_stat.st_ino)
+ strbuf_addstr(sb, pwd);
+ else
+ strbuf_addstr(sb, cwd);
+ if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
+ strbuf_addch(sb, '/');
+ free(cwd);
+ }
+ strbuf_addstr(sb, path);
+}
+
int printf_ln(const char *fmt, ...)
{
int ret;
diff --git a/strbuf.h b/strbuf.h
index a7c0192..7bdc1da 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -174,6 +174,7 @@
extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint);
extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint);
+extern int strbuf_getcwd(struct strbuf *sb);
extern int strbuf_getwholeline(struct strbuf *, FILE *, int);
extern int strbuf_getline(struct strbuf *, FILE *, int);
@@ -189,6 +190,8 @@
int reserved);
extern void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes);
+extern void strbuf_add_absolute_path(struct strbuf *sb, const char *path);
+
__attribute__((format (printf,1,2)))
extern int printf_ln(const char *fmt, ...);
__attribute__((format (printf,2,3)))
diff --git a/trace.c b/trace.c
index e583dc6..54aaee5 100644
--- a/trace.c
+++ b/trace.c
@@ -298,13 +298,12 @@
{
static struct trace_key key = TRACE_KEY_INIT(SETUP);
const char *git_work_tree;
- char cwd[PATH_MAX];
+ char *cwd;
if (!trace_want(&key))
return;
- if (!getcwd(cwd, PATH_MAX))
- die("Unable to get current working directory");
+ cwd = xgetcwd();
if (!(git_work_tree = get_git_work_tree()))
git_work_tree = "(null)";
@@ -316,6 +315,8 @@
trace_printf_key(&key, "setup: worktree: %s\n", quote_crnl(git_work_tree));
trace_printf_key(&key, "setup: cwd: %s\n", quote_crnl(cwd));
trace_printf_key(&key, "setup: prefix: %s\n", quote_crnl(prefix));
+
+ free(cwd);
}
int trace_want(struct trace_key *key)
diff --git a/unix-socket.c b/unix-socket.c
index 91bd6b8..19ed48b 100644
--- a/unix-socket.c
+++ b/unix-socket.c
@@ -18,12 +18,12 @@
}
struct unix_sockaddr_context {
- char orig_dir[PATH_MAX];
+ char *orig_dir;
};
static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx)
{
- if (!ctx->orig_dir[0])
+ if (!ctx->orig_dir)
return;
/*
* If we fail, we can't just return an error, since we have
@@ -32,6 +32,7 @@
*/
if (chdir(ctx->orig_dir) < 0)
die("unable to restore original working directory");
+ free(ctx->orig_dir);
}
static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path,
@@ -39,10 +40,11 @@
{
int size = strlen(path) + 1;
- ctx->orig_dir[0] = '\0';
+ ctx->orig_dir = NULL;
if (size > sizeof(sa->sun_path)) {
const char *slash = find_last_dir_sep(path);
const char *dir;
+ struct strbuf cwd = STRBUF_INIT;
if (!slash) {
errno = ENAMETOOLONG;
@@ -56,11 +58,9 @@
errno = ENAMETOOLONG;
return -1;
}
-
- if (!getcwd(ctx->orig_dir, sizeof(ctx->orig_dir))) {
- errno = ENAMETOOLONG;
+ if (strbuf_getcwd(&cwd))
return -1;
- }
+ ctx->orig_dir = strbuf_detach(&cwd, NULL);
if (chdir_len(dir, slash - dir) < 0)
return -1;
}
diff --git a/wrapper.c b/wrapper.c
index bc1bfb8..bd24cda 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -493,3 +493,11 @@
errno ? strerror(errno) : _("no such user"));
return pw;
}
+
+char *xgetcwd(void)
+{
+ struct strbuf sb = STRBUF_INIT;
+ if (strbuf_getcwd(&sb))
+ die_errno(_("unable to get current working directory"));
+ return strbuf_detach(&sb, NULL);
+}
