Originální popis anglicky:
setegid - set the effective group ID
Návod, kniha: POSIX Programmer's Manual
#include <unistd.h>
int setegid(gid_t
gid);
If
gid is equal to the real group ID or the saved set-group-ID, or if the
process has appropriate privileges,
setegid() shall set the effective
group ID of the calling process to
gid; the real group ID, saved
set-group-ID, and any supplementary group IDs shall remain unchanged.
The
setegid() function shall not affect the supplementary group list in
any way.
Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned
and
errno set to indicate the error.
The
setegid() function shall fail if:
- EINVAL
- The value of the gid argument is invalid and is not
supported by the implementation.
- EPERM
- The process does not have appropriate privileges and
gid does not match the real group ID or the saved set-group-ID.
The following sections are informative.
None.
None.
Refer to the RATIONALE section in
setuid() .
None.
exec() ,
getegid() ,
geteuid() ,
getgid() ,
getuid() ,
seteuid() ,
setgid() ,
setregid() ,
setreuid() ,
setuid() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<sys/types.h>,
<unistd.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
