diff options
Diffstat (limited to 'libbb/run_shell.c')
| -rw-r--r-- | libbb/run_shell.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libbb/run_shell.c b/libbb/run_shell.c new file mode 100644 index 0000000..30050fe --- /dev/null +++ b/libbb/run_shell.c @@ -0,0 +1,81 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com> + * All rights reserved. + * + * 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 Julianne F. Haugh 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 JULIE HAUGH 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 JULIE HAUGH 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. + */ + +#include <stdio.h> +#include <errno.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> +#include <syslog.h> +#include <ctype.h> +#include "libbb.h" + + +/* Run SHELL, or DEFAULT_SHELL if SHELL is empty. + If COMMAND is nonzero, pass it to the shell with the -c option. + If ADDITIONAL_ARGS is nonzero, pass it to the shell as more + arguments. */ + +void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args ) +{ + const char **args; + int argno = 1; + int additional_args_cnt = 0; + + for ( args = additional_args; args && *args; args++ ) + additional_args_cnt++; + + if ( additional_args ) + args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt )); + else + args = (const char **) xmalloc (sizeof (char *) * 4 ); + + args [0] = get_last_path_component ( xstrdup ( shell )); + + if ( loginshell ) { + char *args0 = xmalloc ( xstrlen ( args [0] ) + 2 ); + args0 [0] = '-'; + strcpy ( args0 + 1, args [0] ); + args [0] = args0; + } + + if ( command ) { + args [argno++] = "-c"; + args [argno++] = command; + } + if ( additional_args ) { + for ( ; *additional_args; ++additional_args ) + args [argno++] = *additional_args; + } + args [argno] = 0; + execv ( shell, (char **) args ); + perror_msg_and_die ( "cannot run %s", shell ); +} + |