SETUID.2
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- SETUID(2) Minix Programmer's Manual SETUID(2)
- NAME
- setuid, setgid - set user or group ID's
- SYNOPSIS
- #include <sys/types.h>
- int setuid(uid_t uid)
- int setgid(gid_t gid)
- DESCRIPTION
- Setuid sets the real and effective user ID's of the current process to
- uid. Unprivileged users may only change both user ID's to the real user
- ID; only the super-user may make other changes. Setgid does the same for
- the real and effective group ID's.
- Minix-vmd allows an unprivileged user to change ID's to the original real
- or effective ID as they were at the time the process was executed.
- Setgid may also set the group ID's to any of the additional group ID's.
- If one of the remembered user ID's was 0 then any user or group ID may be
- chosen.
- RETURN VALUE
- Upon successful completion, a value of 0 is returned. Otherwise, a value
- of -1 is returned and errno is set to indicate the error.
- ERRORS
- [EPERM] The current process is not the super-user and a change
- other than one of the allowed changes was attempted.
- SEE ALSO
- getuid(2), getgid(2).
- 4BSD May 9, 1985 1