|
|
| (One intermediate revision by one user not shown) |
| Line 1: |
Line 1: |
| − | [[seteuid]] (and it's brothers, [[setgid]] and [[setuid]]) are all system calls that a program can use to change the effective user ID, group ID and user ID (respectively.) | + | #REDIRECT [[Setuid]] |
| − | | + | |
| − | From the man page for setuid:
| + | |
| − | | + | |
| − | The setuid() system call sets the real and effective user IDs and the
| + | |
| − | saved set-user-ID of the current process to the specified value. The
| + | |
| − | setuid() system call is permitted if the specified ID is equal to the
| + | |
| − | real user ID or the effective user ID of the process, or if the effective
| + | |
| − | user ID is that of the super user.
| + | |
| − |
| + | |
| − | The setgid() system call sets the real and effective group IDs and the
| + | |
| − | saved set-group-ID of the current process to the specified value. The
| + | |
| − | setgid() system call is permitted if the specified ID is equal to the
| + | |
| − | real group ID or the effective group ID of the process, or if the effec-
| + | |
| − | tive user ID is that of the super user.
| + | |
| − |
| + | |
| − | The seteuid() system call (setegid()) sets the effective user ID (group
| + | |
| − | ID) of the current process. The effective user ID may be set to the
| + | |
| − | value of the real user ID or the saved set-user-ID (see intro(2) and
| + | |
| − | execve(2)); in this way, the effective user ID of a set-user-ID exe-
| + | |
| − | cutable may be toggled by switching to the real user ID, then re-enabled
| + | |
| − | by reverting to the set-user-ID value. Similarly, the effective group ID
| + | |
| − | may be set to the value of the real group ID or the saved set-group-ID.
| + | |
| − | See also http://setuid.org/
| + | |
| − | [[Category:FreeBSD Terminology]]
| + | |
