1 KiB
1 KiB
Name
setresuid, setresgid - set real, effective, and saved user / group ID
Synopsis
#include <unistd.h>
int setresuid(uid_t, uid_t, uid_t);
int setresgid(gid_t, gid_t, gid_t);
Description
Sets all of real, effective, and saved user or group ID to the given values.
An argument of -1 keeps the corresponding ID unchanged.
For non-superusers, each of the given values has to be equal to any of the current real, effective, or saved IDs for the call to succeed.
Return value
If the call was set successful, returns 0.
Else, returns -1 and sets errno to describe the error.
Errors
EPERM: At least one of the passed IDs was not equal to the current real, effective, or saved ID, and the user is not superuser.