setreuid(2) — 4 BSD

NAME

setreuid − set real and effective user ID’s

SYNOPSIS

int setreuid (ruid, euid)
int ruid, euid;

DESCRIPTION

The real and effective user ID’s of the current process are set according to the arguments. If ruid or euid is −1, the current uid is filled in by the system. Only the super-user may modify the real uid of a process. Users other than the super-user may change the effective uid of a process only to the real uid.

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 changing the effective user-id to the real user-id was specified.

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