mirror of
https://github.com/git/git.git
synced 2024-11-24 10:26:17 +08:00
5b8e6f85f9
A lot of modules that have nothing to do with git-shell functionality were linked in, bloating git-shell more than 8 times. This patch cuts off redundant dependencies by: 1. providing stubs for three functions that make no sense for git-shell; 2. moving quote_path_fully from environment.c to quote.c to make the later self sufficient; 3. moving make_absolute_path into a new separate file. The following numbers have been received with the default optimization settings on master using GCC 4.1.2: Before: text data bss dec hex filename 143915 1348 93168 238431 3a35f git-shell After: text data bss dec hex filename 17670 788 8232 26690 6842 git-shell Signed-off-by: Junio C Hamano <gitster@pobox.com>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
#include "cache.h"
|
|
|
|
/* We allow "recursive" symbolic links. Only within reason, though. */
|
|
#define MAXDEPTH 5
|
|
|
|
const char *make_absolute_path(const char *path)
|
|
{
|
|
static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1];
|
|
char cwd[1024] = "";
|
|
int buf_index = 1, len;
|
|
|
|
int depth = MAXDEPTH;
|
|
char *last_elem = NULL;
|
|
struct stat st;
|
|
|
|
if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
|
|
die ("Too long path: %.*s", 60, path);
|
|
|
|
while (depth--) {
|
|
if (stat(buf, &st) || !S_ISDIR(st.st_mode)) {
|
|
char *last_slash = strrchr(buf, '/');
|
|
if (last_slash) {
|
|
*last_slash = '\0';
|
|
last_elem = xstrdup(last_slash + 1);
|
|
} else {
|
|
last_elem = xstrdup(buf);
|
|
*buf = '\0';
|
|
}
|
|
}
|
|
|
|
if (*buf) {
|
|
if (!*cwd && !getcwd(cwd, sizeof(cwd)))
|
|
die ("Could not get current working directory");
|
|
|
|
if (chdir(buf))
|
|
die ("Could not switch to '%s'", buf);
|
|
}
|
|
if (!getcwd(buf, PATH_MAX))
|
|
die ("Could not get current working directory");
|
|
|
|
if (last_elem) {
|
|
int len = strlen(buf);
|
|
if (len + strlen(last_elem) + 2 > PATH_MAX)
|
|
die ("Too long path name: '%s/%s'",
|
|
buf, last_elem);
|
|
buf[len] = '/';
|
|
strcpy(buf + len + 1, last_elem);
|
|
free(last_elem);
|
|
last_elem = NULL;
|
|
}
|
|
|
|
if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
|
|
len = readlink(buf, next_buf, PATH_MAX);
|
|
if (len < 0)
|
|
die ("Invalid symlink: %s", buf);
|
|
next_buf[len] = '\0';
|
|
buf = next_buf;
|
|
buf_index = 1 - buf_index;
|
|
next_buf = bufs[buf_index];
|
|
} else
|
|
break;
|
|
}
|
|
|
|
if (*cwd && chdir(cwd))
|
|
die ("Could not change back to '%s'", cwd);
|
|
|
|
return buf;
|
|
}
|