]>
Commit | Line | Data |
---|---|---|
f859c846 JH |
1 | #include "cache.h" |
2 | ||
3 | int has_symlink_leading_path(const char *name, char *last_symlink) | |
4 | { | |
5 | char path[PATH_MAX]; | |
6 | const char *sp, *ep; | |
7 | char *dp; | |
8 | ||
9 | sp = name; | |
10 | dp = path; | |
11 | ||
12 | if (last_symlink && *last_symlink) { | |
13 | size_t last_len = strlen(last_symlink); | |
14 | size_t len = strlen(name); | |
15 | if (last_len < len && | |
16 | !strncmp(name, last_symlink, last_len) && | |
17 | name[last_len] == '/') | |
18 | return 1; | |
19 | *last_symlink = '\0'; | |
20 | } | |
21 | ||
22 | while (1) { | |
23 | size_t len; | |
24 | struct stat st; | |
25 | ||
26 | ep = strchr(sp, '/'); | |
27 | if (!ep) | |
28 | break; | |
29 | len = ep - sp; | |
30 | if (PATH_MAX <= dp + len - path + 2) | |
31 | return 0; /* new name is longer than that??? */ | |
32 | memcpy(dp, sp, len); | |
33 | dp[len] = 0; | |
34 | ||
35 | if (lstat(path, &st)) | |
36 | return 0; | |
37 | if (S_ISLNK(st.st_mode)) { | |
38 | if (last_symlink) | |
39 | strcpy(last_symlink, path); | |
40 | return 1; | |
41 | } | |
42 | ||
43 | dp[len++] = '/'; | |
44 | dp = dp + len; | |
45 | sp = ep + 1; | |
46 | } | |
47 | return 0; | |
48 | } |