SETEGID - Online Linux Manual PageSection : 3P
Updated : 2017
Source : IEEE/The Open Group
Note : POSIX Programmer's Manual
PROLOGThis manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
NAMEsetegid — set the effective group ID
SYNOPSIS#include <unistd.h>
int setegid(gid_t gid);
DESCRIPTIONIf 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.
RETURN VALUEUpon successful completion, 0 shall be returned; otherwise, −1 shall be returned and errno set to indicate the error.
ERRORSThe 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.
EXAMPLESNone.
APPLICATION USAGENone.
RATIONALERefer to the RATIONALE section in setuid().
FUTURE DIRECTIONSNone.
SEE ALSOexec , getegid(), geteuid(), getgid(), getuid(), seteuid(), setgid(), setregid(), setreuid(), setuid() The Base Definitions volume of POSIX.1‐2017, <sys_types.h>, <unistd.h>
COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . 0
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