diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/shell/hush.c b/shell/hush.c index 752080a64..8b8d5fc8b 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -8970,10 +8970,14 @@ static int FAST_FUNC builtin_umask(char **argv) if (argv[0]) { mode_t old_mask = mask; - mask ^= 0777; + /* numeric umasks are taken as-is */ + /* symbolic umasks are inverted: "umask a=rx" calls umask(222) */ + if (!isdigit(argv[0][0])) + mask ^= 0777; rc = bb_parse_mode(argv[0], &mask); - mask ^= 0777; - if (rc == 0) { + if (!isdigit(argv[0][0])) + mask ^= 0777; + if (rc == 0 || (unsigned)mask > 0777) { mask = old_mask; /* bash messages: * bash: umask: 'q': invalid symbolic mode operator |