From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libc/stdlib/system.3 | 116 ------------------------------------------- 1 file changed, 116 deletions(-) delete mode 100644 src/lib/libc/stdlib/system.3 (limited to 'src/lib/libc/stdlib/system.3') diff --git a/src/lib/libc/stdlib/system.3 b/src/lib/libc/stdlib/system.3 deleted file mode 100644 index bdd94c0115..0000000000 --- a/src/lib/libc/stdlib/system.3 +++ /dev/null @@ -1,116 +0,0 @@ -.\" Copyright (c) 1990, 1991 The Regents of the University of California. -.\" All rights reserved. -.\" -.\" This code is derived from software contributed to Berkeley by -.\" the American National Standards Committee X3, on Information -.\" Processing Systems. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 3. Neither the name of the University nor the names of its contributors -.\" may be used to endorse or promote products derived from this software -.\" without specific prior written permission. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND -.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE -.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. -.\" -.\" $OpenBSD: system.3,v 1.14 2016/02/05 18:09:19 espie Exp $ -.\" -.Dd $Mdocdate: February 5 2016 $ -.Dt SYSTEM 3 -.Os -.Sh NAME -.Nm system -.Nd pass a command to the shell -.Sh SYNOPSIS -.In stdlib.h -.Ft int -.Fn system "const char *string" -.Sh DESCRIPTION -The -.Fn system -function hands the argument -.Fa string -to the command interpreter -.Xr sh 1 . -The calling process waits for the shell to finish executing the command, -ignoring -.Dv SIGINT -and -.Dv SIGQUIT , -and blocking -.Dv SIGCHLD . -.Pp -If -.Fa string -is -.Dv NULL , -.Fn system -will return non-zero. -Otherwise, -.Fn system -returns the termination status of the shell in the format specified by -.Xr waitpid 2 . -.Pp -Note that fork handlers established using -.Xr pthread_atfork 3 -are not called when a multithreaded program calls -.Fn system . -.Sh RETURN VALUES -If a child process cannot be created, or the termination status of -the shell cannot be obtained, -.Fn system -returns \-1 and sets -.Va errno -to indicate the error. -If execution of the shell fails, -.Fn system -returns the termination status for a program that terminates with a call of -.Fn exit 127 . -.Sh SEE ALSO -.Xr sh 1 , -.Xr execve 2 , -.Xr waitpid 2 , -.Xr popen 3 -.Sh STANDARDS -The -.Fn system -function conforms to -.St -ansiC -and -.St -p1003.2-92 . -.Sh HISTORY -The -.Fn system -function first appeared in -.At v6 . -.Sh CAVEATS -Never supply the -.Fn system -function with a command containing any part of an unsanitized user-supplied -string. -Shell meta-characters present will be honored by the -.Xr sh 1 -command interpreter. -.Pp -It is often simpler to bypass the shell and run an external command using -.Xr fork 2 , -.Xr execlp 3 , -and -.Xr waitpid 2 -directly instead of having to sanitize a string for shell consumption. -- cgit v1.2.3-55-g6feb