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by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved |
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by Francesco Paolo Lovergine
* Alligned to linux main manpages edition. |
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.TH "SETEGID" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual" |
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by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
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.\" setegid |
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.SH NAME |
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setegid \- set the effective group ID
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.SH SYNOPSIS |
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.LP
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\fB#include <unistd.h>
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.br
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.sp
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int setegid(gid_t\fP \fIgid\fP\fB); |
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.br
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\fP
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.SH DESCRIPTION |
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.LP
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If \fIgid\fP is equal to the real group ID or the saved set-group-ID, |
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or if the process has appropriate privileges, |
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\fIsetegid\fP() shall set the effective group ID of the calling process |
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to \fIgid\fP; the real group ID, saved set-group-ID, and |
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any supplementary group IDs shall remain unchanged. |
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.LP
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The \fIsetegid\fP() function shall not affect the supplementary group |
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list in any way. |
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.SH RETURN VALUE |
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.LP
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Upon successful completion, 0 shall be returned; otherwise, -1 shall |
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be returned and \fIerrno\fP set to indicate the error. |
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.SH ERRORS |
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.LP
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The \fIsetegid\fP() function shall fail if: |
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.TP 7 |
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.B EINVAL |
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The value of the \fIgid\fP argument is invalid and is not supported |
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by the implementation. |
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.TP 7 |
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.B EPERM |
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The process does not have appropriate privileges and \fIgid\fP does |
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not match the real group ID or the saved |
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set-group-ID. |
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.sp
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.LP
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\fIThe following sections are informative.\fP |
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.SH EXAMPLES |
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.LP
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None. |
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.SH APPLICATION USAGE |
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.LP
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None. |
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.SH RATIONALE |
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.LP
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Refer to the RATIONALE section in \fIsetuid\fP() . |
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.SH FUTURE DIRECTIONS |
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.LP
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None. |
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.SH SEE ALSO |
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.LP
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\fIexec\fP() , \fIgetegid\fP() , \fIgeteuid\fP() , \fIgetgid\fP() |
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, \fIgetuid\fP() , |
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\fIseteuid\fP() , \fIsetgid\fP() , \fIsetregid\fP() , \fIsetreuid\fP() |
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, \fIsetuid\fP() , |
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the Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<sys/types.h>\fP, |
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\fI<unistd.h>\fP |
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.SH COPYRIGHT |
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Portions of this text are reprinted and reproduced in electronic form |
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology |
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-- Portable Operating System Interface (POSIX), The Open Group Base |
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of |
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Electrical and Electronics Engineers, Inc and The Open Group. In the |
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event of any discrepancy between this version and the original IEEE and |
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The Open Group Standard, the original IEEE and The Open Group Standard |
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is the referee document. The original Standard can be obtained online at |
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http://www.opengroup.org/unix/online.html . |