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hush: deal with umask TODO (symbolic modes)

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function                                             old     new   delta
builtin_umask                                         79     125     +46
This commit is contained in:
Denis Vlasenko 2009-04-18 02:06:54 +00:00
parent 6b9e05392b
commit eb85849b50
2 changed files with 26 additions and 16 deletions
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3
shell/ash.c
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@ -12646,6 +12646,8 @@ umaskcmd(int argc UNUSED_PARAM, char **argv)
S_IROTH, S_IWOTH, S_IXOTH
};
/* TODO: use bb_parse_mode() instead */
char *ap;
mode_t mask;
int i;
@ -12712,7 +12714,6 @@ umaskcmd(int argc UNUSED_PARAM, char **argv)
*
* Public domain.
*/
struct limits {
uint8_t cmd; /* RLIMIT_xxx fit into it */
uint8_t factor_shift; /* shift by to get rlim_{cur,max} values */

39
shell/hush.c
View File

@ -6742,24 +6742,33 @@ static int builtin_source(char **argv)
static int builtin_umask(char **argv)
{
mode_t new_umask;
const char *arg = argv[1];
if (arg) {
//TODO: umask may take chmod-like symbolic masks
new_umask = bb_strtou(arg, NULL, 8);
if (errno) {
//Message? bash examples:
//bash: umask: 'q': invalid symbolic mode operator
//bash: umask: 999: octal number out of range
return EXIT_FAILURE;
int rc;
mode_t mask;
mask = umask(0);
if (argv[1]) {
mode_t old_mask = mask;
mask ^= 0777;
rc = bb_parse_mode(argv[1], &mask);
mask ^= 0777;
if (rc == 0) {
mask = old_mask;
/* bash messages:
* bash: umask: 'q': invalid symbolic mode operator
* bash: umask: 999: octal number out of range
*/
bb_error_msg("%s: '%s' invalid mode", argv[0], argv[1]);
}
} else {
new_umask = umask(0);
printf("%.3o\n", (unsigned) new_umask);
/* fall through and restore new_umask which we set to 0 */
rc = 1;
/* Mimic bash */
printf("%04o\n", (unsigned) mask);
/* fall through and restore mask which we set to 0 */
}
umask(new_umask);
return EXIT_SUCCESS;
umask(mask);
return !rc; /* rc != 0 - success */
}
/* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#unset */