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setregid.2freebsd
Langue: en
Version: 266511 (debian - 07/07/09)
Section: 2 (Appels système)
BSD mandoc
NAME
setregid - set real and effective group IDLIBRARY
Lb libcSYNOPSIS
In unistd.h Ft int Fn setregid gid_t rgid gid_t egidDESCRIPTION
The real and effective group ID's of the current process are set to the arguments. If the real group ID is changed, the saved group ID is changed to the new value of the effective group ID.Unprivileged users may change the real group ID to the effective group ID and vice-versa; only the super-user may make other changes.
Supplying a value of -1 for either the real or effective group ID forces the system to substitute the current ID in place of the -1 argument.
The Fn setregid system call was intended to allow swapping the real and effective group IDs in set-group-ID programs to temporarily relinquish the set-group-ID value. This system call did not work correctly, and its purpose is now better served by the use of the setegid(2) system call.
When setting the real and effective group IDs to the same value, the standard Fn setgid system call is preferred.
RETURN VALUES
Rv -std setregidERRORS
- Bq Er EPERM
- The current process is not the super-user and a change other than changing the effective group-id to the real group-id was specified.
SEE ALSO
getgid(2), issetugid(2), setegid(2), setgid(2), setuid(2)HISTORY
The Fn setregid system call appeared in BSD 4.2Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre