Tightening security: not for the impatient
Posted Jul 21, 2012 11:30 UTC (Sat) by anselm
In reply to: Tightening security: not for the impatient
Parent article: Tightening security: not for the impatient
Hard-linked files do share the same permissions – permissions are stored on the file's inode and hard links are just extra directory entries that point to the same inode.
Linux will not let you create a hard link to an executable file that is marked suid but doesn't belong to you. Making hard links to a file that you own yourself is fine regardless of whether that file is suid or not, and does not impinge on the suid status of the file.
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