Clément Chigot | 400caaf | 2019-04-25 07:01:56 +0000 | [diff] [blame] | 1 | #define COMPAT_CODE_ACCESS |
| 2 | #include "../git-compat-util.h" |
| 3 | |
| 4 | /* Do the same thing access(2) does, but use the effective uid, |
| 5 | * and don't make the mistake of telling root that any file is |
| 6 | * executable. This version uses stat(2). |
| 7 | */ |
| 8 | int git_access(const char *path, int mode) |
| 9 | { |
| 10 | struct stat st; |
| 11 | |
| 12 | /* do not interfere a normal user */ |
| 13 | if (geteuid()) |
| 14 | return access(path, mode); |
| 15 | |
| 16 | if (stat(path, &st) < 0) |
| 17 | return -1; |
| 18 | |
| 19 | /* Root can read or write any file. */ |
| 20 | if (!(mode & X_OK)) |
| 21 | return 0; |
| 22 | |
| 23 | /* Root can execute any file that has any one of the execute |
| 24 | * bits set. |
| 25 | */ |
| 26 | if (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) |
| 27 | return 0; |
| 28 | |
| 29 | errno = EACCES; |
| 30 | return -1; |
| 31 | } |