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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
| commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
| tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man/man3/initgroups.3 | |
| parent | Adding debian version 6.7-2. (diff) | |
| download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip | |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/man3/initgroups.3')
| -rw-r--r-- | man/man3/initgroups.3 | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/man/man3/initgroups.3 b/man/man3/initgroups.3 new file mode 100644 index 0000000..ea68719 --- /dev/null +++ b/man/man3/initgroups.3 @@ -0,0 +1,98 @@ +'\" t +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu> +.\" Modified 2004-10-10 by aeb +.\" +.TH initgroups 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +initgroups \- initialize the supplementary group access list +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/types.h> +.B #include <grp.h> +.P +.BI "int initgroups(const char *" user ", gid_t " group ); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR initgroups (): +.nf + Since glibc 2.19: + _DEFAULT_SOURCE + glibc 2.19 and earlier: + _BSD_SOURCE +.fi +.SH DESCRIPTION +The +.BR initgroups () +function initializes the group access list by +reading the group database +.I /etc/group +and using all groups of +which +.I user +is a member. +The additional group +.I group +is +also added to the list. +.P +The +.I user +argument must be non-NULL. +.SH RETURN VALUE +The +.BR initgroups () +function returns 0 on success. +On error, \-1 is returned, and +.I errno +is set to indicate the error. +.SH ERRORS +.TP +.B ENOMEM +Insufficient memory to allocate group information structure. +.TP +.B EPERM +The calling process has insufficient privilege. +See the underlying system call +.BR setgroups (2). +.SH FILES +.TP +.I /etc/group +group database file +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR initgroups () +T} Thread safety MT-Safe locale +.TE +.SH STANDARDS +None. +.SH HISTORY +SVr4, 4.3BSD. +.SH SEE ALSO +.BR getgroups (2), +.BR setgroups (2), +.BR credentials (7) |