From 7e0f021a9aec35fd8e6725e87e3313b101d26f5e Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Sun, 27 Jan 2008 11:37:44 +0100 Subject: Initial import (2.0.2-6) --- reference/C/MAN/setgid.htm | 99 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 reference/C/MAN/setgid.htm (limited to 'reference/C/MAN/setgid.htm') diff --git a/reference/C/MAN/setgid.htm b/reference/C/MAN/setgid.htm new file mode 100644 index 0000000..c41be33 --- /dev/null +++ b/reference/C/MAN/setgid.htm @@ -0,0 +1,99 @@ +setgid + +
+
+
+
+
+
SETGID(2)           Linux Programmer's Manual           SETGID(2)
+

+
+
NAME
+
       setgid - set group identity
+
+
SYNOPSIS
+
       #include <unistd.h>
+
+       int setgid(gid_t gid)
+
+
DESCRIPTION
+
       setgid sets the effective group ID of the current process.
+       If the caller is the superuser, the real and  saved  group
+       ID's are also set.
+
+       Under   Linux,   setgid  is  implemented  like  SYSV  with
+       SAVED_IDS.  This allows a setgid (other than root) program
+       to  drop  all  of it's group privileges, do some un-privi-
+       leged work, and  then  re-engage  the  original  effective
+       group ID in a secure manner.
+
+       If the user is root or the program is setgid root, special
+       care must be taken. The setgid function checks the  effec-
+       tive  gid  of  the  caller and if it is the superuser, all
+       process related group ID's are set to gid.  After this has
+       occurred,  it is impossible for the program to regain root
+       privileges.
+
+
RETURN VALUE
+
       On success, zero is returned.  On error, -1  is  returned,
+       and errno is set appropriately.
+
+
ERRORS
+
       EPERM   The  user  is not the super-user, and gid does not
+               match the effective or saved group ID of the call-
+               ing process.
+
+
CONFORMING TO
+
       System V
+
+
+
+

SEE ALSO +

+getgid, +setregid, +setegid, +

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Linux 1.1.36               29 July 1994                         1
+

+
+
+

+

+

+

+ + + + +
+Top + +Master Index + +Keywords + +Functions +
+
+

+

+ +This manual page was brought to you by mjl_man V-2.0 -- cgit v1.2.3-54-g00ecf