chmod no longer clears sticky bit
looks like doing `chmod 0755` no longer clears sticky bits ... for example: $ tar xf coreutils-6.3.tar.bz2 $ cd coreutils-6.3 $ ./configure $ make -C lib $ make -C src chmod $ mkdir foo $ stat -c%a foo 755 $ ./src/chmod -v 2755 foo mode of `foo' changed to 2755 (rwxr-sr-x) $ stat -c%a foo 2755 $ ./src/chmod -v 0755 foo mode of `foo' retained as 2755 (rwxr-sr-x) $ stat -c%a foo 2755 erm ? -mike pgphyYGAcoYYG.pgp Description: PGP signature ___ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
Re: chmod no longer clears sticky bit
On Saturday 30 September 2006 19:07, Mike Frysinger wrote: looks like doing `chmod 0755` no longer clears sticky bits ... seems to arise from lib/modechange.c:mode_adjust() ... particularly: mode_t omit_change = (dir ? S_ISUID | S_ISGID : 0) ~ changes-mentioned; omit_change here is set to 06000 ... so when that is inverted and masked against the requested 02755, the requested changes become simply 00755 ... -mike pgphpA5OV0vCG.pgp Description: PGP signature ___ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
Re: chmod no longer clears sticky bit
Mike Frysinger [EMAIL PROTECTED] writes: looks like doing `chmod 0755` no longer clears sticky bits ... for example: Yes, that's mentioned in the NEWS file. It says: chmod, install, and mkdir now preserve a directory's set-user-ID and set-group-ID bits unless you explicitly request otherwise. E.g., `chmod 755 DIR' and `chmod u=rwx,go=rx DIR' now preserve DIR's set-user-ID and set-group-ID bits instead of clearing them, and similarly for `mkdir -m 755 DIR' and `mkdir -m u=rwx,go=rx DIR'. To clear the bits, mention them explicitly in a symbolic mode, e.g., `mkdir -m u=rwx,go=rx,-s DIR'. To set them, mention them explicitly in either a symbolic or a numeric mode, e.g., `mkdir -m 2755 DIR', `mkdir -m u=rwx,go=rx,g+s' DIR. This change is for convenience on systems where these bits inherit from parents. Unfortunately other operating systems are not consistent here, and portable scripts cannot assume the bits are set, cleared, or preserved, even when the bits are explicitly mentioned. For example, OpenBSD 3.9 `mkdir -m 777 D' preserves D's setgid bit but `chmod 777 D' clears it. Conversely, Solaris 10 `mkdir -m 777 D', `mkdir -m g-s D', and `chmod 0777 D' all preserve D's setgid bit, and you must use something like `chmod g-s D' to clear it. ___ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
Re: chmod no longer clears sticky bit
Mike Frysinger [EMAIL PROTECTED] writes: i guess this is allowed by spec huh ? Yes. The last sentence in the extract that you quoted clearly allows the current behavior. The area is not standardized that closely, so we tried to do the right thing. It was discussed in several threads, e.g., http://lists.gnu.org/archive/html/bug-coreutils/2006-07/msg00124.html. ___ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
