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20 .\" $FreeBSD: src/lib/libc/sys/setresuid.2,v 1.2.2.8 2001/12/14 18:34:01 ru Exp $
30 .Nd get or set real, effective and saved user or group ID
37 .Fn getresgid "gid_t *rgid" "gid_t *egid" "gid_t *sgid"
39 .Fn getresuid "uid_t *ruid" "uid_t *euid" "uid_t *suid"
41 .Fn setresgid "gid_t rgid" "gid_t egid" "gid_t sgid"
43 .Fn setresuid "uid_t ruid" "uid_t euid" "uid_t suid"
47 system call sets the real,
48 effective and saved user IDs of the current process.
51 sets the real, effective and saved group IDs.
53 Privileged processes may set these IDs
55 Unprivileged processes are restricted
56 in that each of the new IDs must match one of the current IDs.
58 Passing -1 as an argument causes the corresponding value
65 calls retrieve the real, effective, and saved group and user IDs of
66 the current process, respectively.
78 The calling process was not privileged
79 and tried to change one or more IDs to a value
80 which was not the current real ID, the current effective ID
81 nor the current saved ID.
94 These system calls first appeared in HP-UX.