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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/getusershell.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/getusershell.3')
| -rw-r--r-- | man/man3/getusershell.3 | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/man/man3/getusershell.3 b/man/man3/getusershell.3 new file mode 100644 index 0000000..142b36e --- /dev/null +++ b/man/man3/getusershell.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 Sat Jul 24 19:17:53 1993 by Rik Faith (faith@cs.unc.edu) +.TH getusershell 3 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +getusershell, setusershell, endusershell \- get permitted user shells +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <unistd.h> +.P +.B char *getusershell(void); +.B void setusershell(void); +.B void endusershell(void); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR getusershell (), +.BR setusershell (), +.BR endusershell (): +.nf + Since glibc 2.21: +.\" commit 266865c0e7b79d4196e2cc393693463f03c90bd8 + _DEFAULT_SOURCE + In glibc 2.19 and 2.20: + _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) + Up to and including glibc 2.19: + _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500) +.fi +.SH DESCRIPTION +The +.BR getusershell () +function returns the next line from the file +.IR /etc/shells , +opening the file if necessary. +The line should contain +the pathname of a valid user shell. +If +.I /etc/shells +does not exist or +is unreadable, +.BR getusershell () +behaves as if +.I /bin/sh +and +.I /bin/csh +were listed in the file. +.P +The +.BR setusershell () +function rewinds +.IR /etc/shells . +.P +The +.BR endusershell () +function closes +.IR /etc/shells . +.SH RETURN VALUE +The +.BR getusershell () +function returns NULL on end-of-file. +.SH FILES +.I /etc/shells +.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 getusershell (), +.BR setusershell (), +.BR endusershell () +T} Thread safety MT-Unsafe +.TE +.SH STANDARDS +None. +.SH HISTORY +4.3BSD. +.SH SEE ALSO +.BR shells (5) |