From 399644e47874bff147afb19c89228901ac39340e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:40:15 +0200 Subject: Adding upstream version 6.05.01. Signed-off-by: Daniel Baumann --- man3/getpw.3 | 126 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 man3/getpw.3 (limited to 'man3/getpw.3') diff --git a/man3/getpw.3 b/man3/getpw.3 new file mode 100644 index 0000000..b94e117 --- /dev/null +++ b/man3/getpw.3 @@ -0,0 +1,126 @@ +'\" 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 19:23:25 1993 by Rik Faith (faith@cs.unc.edu) +.\" Modified Mon May 27 21:37:47 1996 by Martin Schulze (joey@linux.de) +.\" +.TH getpw 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +getpw \- reconstruct password line entry +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */" +.B #include +.B #include +.PP +.BI "[[deprecated]] int getpw(uid_t " uid ", char *" buf ); +.fi +.SH DESCRIPTION +The +.BR getpw () +function reconstructs the password line entry for +the given user ID \fIuid\fP in the buffer \fIbuf\fP. +The returned buffer contains a line of format +.PP +.in +4n +.EX +.B name:passwd:uid:gid:gecos:dir:shell +.EE +.in +.PP +The \fIpasswd\fP structure is defined in \fI\fP as follows: +.PP +.in +4n +.EX +struct passwd { + char *pw_name; /* username */ + char *pw_passwd; /* user password */ + uid_t pw_uid; /* user ID */ + gid_t pw_gid; /* group ID */ + char *pw_gecos; /* user information */ + char *pw_dir; /* home directory */ + char *pw_shell; /* shell program */ +}; +.EE +.in +.PP +For more information about the fields of this structure, see +.BR passwd (5). +.SH RETURN VALUE +The +.BR getpw () +function returns 0 on success; on error, it returns \-1, and +.I errno +is set to indicate the error. +.PP +If +.I uid +is not found in the password database, +.BR getpw () +returns \-1, sets +.I errno +to 0, and leaves +.I buf +unchanged. +.SH ERRORS +.TP +.BR 0 " or " ENOENT +No user corresponding to +.IR uid . +.TP +.B EINVAL +.I buf +is NULL. +.TP +.B ENOMEM +Insufficient memory to allocate +.I passwd +structure. +.SH FILES +.TP +.I /etc/passwd +password 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 getpw () +T} Thread safety MT-Safe locale +.TE +.sp 1 +.SH STANDARDS +None. +.SH HISTORY +SVr2. +.SH BUGS +The +.BR getpw () +function is dangerous as it may overflow the provided buffer +.IR buf . +It is obsoleted by +.BR getpwuid (3). +.SH SEE ALSO +.BR endpwent (3), +.BR fgetpwent (3), +.BR getpwent (3), +.BR getpwnam (3), +.BR getpwuid (3), +.BR putpwent (3), +.BR setpwent (3), +.BR passwd (5) -- cgit v1.2.3