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Date: Thu, 12 Jan 2012 17:53:44 -0800 From: Andrew Ayer <agwa@...rewayer.name> To: Alexander Viro <viro@...iv.linux.org.uk> Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 0/2 RESEND] POSIX-compliant version of fchmodat with flag argument Hi, The below patches implement a 4 argument version of fchmodat (fchmodat4) that has a flag argument, as specified by POSIX. This is needed to implement a proper glibc wrapper. fchmodat4 supports the same two flags as fchownat: AT_SYMLINK_NOFOLLOW and AT_EMPTY_PATH. Besides the POSIX-compliance, this patch will make it possible to ensure, in a race-free way, that you do not follow symlinks when chmodding. Previously, you could open a file with O_NOFOLLOW and fchmod it, but this only worked if you had read or write permissions on the file. Now you can open the file with O_PATH|O_NOFOLLOW and do fchmodat with AT_EMPTY_PATH. Could this patch be applied? Any feedback is welcome. Cheers, Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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