NAME seteuid, setegid - set effective user or group ID CONTENTS Synopsis Description Errors Notes SYNOPSIS #include <sys/types.h> #include <unistd.h> "int seteuid(uid_t "euid); "int setegid(gid_t "egid); DESCRIPTION seteuid sets the effective user ID of the current process. Unprivileged user processes may only set the effective user ID to the real user ID, the effective user ID or the saved user ID. Precisely the same holds for setegid with "group" instead of "user". "RETURN VALUE" On success, zero is returned. On error, -1 is returned, and errno is set appropriately. ERRORS
"int seteuid(uid_t "euid); "int setegid(gid_t "egid); DESCRIPTION seteuid sets the effective user ID of the current process. Unprivileged user processes may only set the effective user ID to the real user ID, the effective user ID or the saved user ID. Precisely the same holds for setegid with "group" instead of "user". "RETURN VALUE" On success, zero is returned. On error, -1 is returned, and errno is set appropriately. ERRORS
Precisely the same holds for setegid with "group" instead of "user".
"RETURN VALUE" On success, zero is returned. On error, -1 is returned, and errno is set appropriately. ERRORS
Under libc4, libc5 and glibc2.0 seteuid(euid) is equivalent to setreuid(-1," euid") and hence may change the saved user ID. Under glibc2.1 it is equivalent to setresuid(-1," euid",-1) and hence does not change the saved user ID. Similar remarks hold for setegid. "CONFORMING TO" BSD 4.3 "SEE ALSO" geteuid(2), setuid(2), setreuid(2), setresuid(2)
