7
void __procfdname(char *, unsigned);
9
int fchmodat(int fd, const char *path, mode_t mode, int flag)
11
if (!flag) return syscall(SYS_fchmodat, fd, path, mode, flag);
13
if (flag != AT_SYMLINK_NOFOLLOW)
14
return __syscall_ret(-EINVAL);
18
char proc[15+3*sizeof(int)];
20
if ((ret = __syscall(SYS_fstatat, fd, path, &st, flag)))
21
return __syscall_ret(ret);
22
if (S_ISLNK(st.st_mode))
23
return __syscall_ret(-EOPNOTSUPP);
25
if ((fd2 = __syscall(SYS_openat, fd, path, O_RDONLY|O_PATH|O_NOFOLLOW|O_NOCTTY)) < 0) {
27
return __syscall_ret(-EOPNOTSUPP);
28
return __syscall_ret(fd2);
31
__procfdname(proc, fd2);
32
if (!(ret = __syscall(SYS_stat, proc, &st)) && !S_ISLNK(st.st_mode))
33
ret = __syscall(SYS_chmod, proc, mode);
35
__syscall(SYS_close, fd2);
36
return __syscall_ret(ret);