diff options
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/Makefile.in | 4 | ||||
| -rw-r--r-- | libbb/run_parts.c | 139 |
2 files changed, 141 insertions, 2 deletions
diff --git a/libbb/Makefile.in b/libbb/Makefile.in index 6703cf1f7..e00fd2f51 100644 --- a/libbb/Makefile.in +++ b/libbb/Makefile.in @@ -34,8 +34,8 @@ LIBBB_SRC:= \ my_getgrgid.c my_getpwnam.c my_getpwnamegid.c my_getpwuid.c \ parse_mode.c parse_number.c perror_msg.c perror_msg_and_die.c \ print_file.c process_escape_sequence.c read_package_field.c \ - recursive_action.c safe_read.c safe_strncpy.c syscalls.c \ - syslog_msg_with_name.c time_string.c trim.c \ + recursive_action.c run_parts.c safe_read.c safe_strncpy.c \ + syscalls.c syslog_msg_with_name.c time_string.c trim.c \ vdprintf.c verror_msg.c vperror_msg.c wfopen.c xgetcwd.c xreadlink.c \ xregcomp.c interface.c remove_file.c last_char_is.c copyfd.c \ vherror_msg.c herror_msg.c herror_msg_and_die.c xgethostbyname.c \ diff --git a/libbb/run_parts.c b/libbb/run_parts.c new file mode 100644 index 000000000..bf906a399 --- /dev/null +++ b/libbb/run_parts.c @@ -0,0 +1,139 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini run-parts implementation for busybox + * + * + * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it> + * + * Based on the Debian run-parts program, version 1.15 + * Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>, + * Copyright (C) 1996-1999 Guy Maor <maor@debian.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + * + */ + +/* This is my first attempt to write a program in C (well, this is my first + * attempt to write a program! :-) . */ + +/* This piece of code is heavily based on the original version of run-parts, + * taken from debian-utils. I've only removed the long options and a the + * report mode. As the original run-parts support only long options, I've + * broken compatibility because the BusyBox policy doesn't allow them. + * The supported options are: + * -t test. Print the name of the files to be executed, without + * execute them. + * -a ARG argument. Pass ARG as an argument the program executed. It can + * be repeated to pass multiple arguments. + * -u MASK umask. Set the umask of the program executed to MASK. */ + +/* TODO + * done - convert calls to error in perror... and remove error() + * done - convert malloc/realloc to their x... counterparts + * done - remove catch_sigchld + * done - use bb's concat_path_file() + * done - declare run_parts_main() as extern and any other function as static? + */ + +#include <sys/types.h> +#include <sys/wait.h> +#include <stdlib.h> +#include <dirent.h> +#include <unistd.h> +#include <ctype.h> + +#include "libbb.h" + +/* valid_name */ +/* True or false? Is this a valid filename (upper/lower alpha, digits, + * underscores, and hyphens only?) + */ +static int valid_name(const struct dirent *d) +{ + char *c = d->d_name; + + while (*c) { + if (!isalnum(*c) && (*c != '_') && (*c != '-')) { + return 0; + } + ++c; + } + return 1; +} + +/* run_parts */ +/* Find the parts to run & call run_part() */ +extern int run_parts(char **args, const unsigned char test_mode) +{ + struct dirent **namelist = 0; + struct stat st; + char *filename; + int entries; + int i; + int exitstatus = 0; + + /* scandir() isn't POSIX, but it makes things easy. */ + entries = scandir(args[0], &namelist, valid_name, alphasort); + + if (entries == -1) { + perror_msg_and_die("failed to open directory %s", args[0]); + } + + for (i = 0; i < entries; i++) { + + filename = concat_path_file(args[0], namelist[i]->d_name); + + if (stat(filename, &st) < 0) { + perror_msg_and_die("failed to stat component %s", filename); + } + if (S_ISREG(st.st_mode) && !access(filename, X_OK)) { + if (test_mode) + printf("run-parts would run %s\n", filename); + else { + int result; + int pid; + + if ((pid = fork()) < 0) { + perror_msg_and_die("failed to fork"); + } else if (!pid) { + execv(args[0], args); + perror_msg_and_die("failed to exec %s", args[0]); + } + + waitpid(pid, &result, 0); + + if (WIFEXITED(result) && WEXITSTATUS(result)) { + perror_msg("%s exited with return code %d", args[0], WEXITSTATUS(result)); + exitstatus = 1; + } else if (WIFSIGNALED(result)) { + perror_msg("%s exited because of uncaught signal %d", args[0], WTERMSIG(result)); + exitstatus = 1; + } + } + } + else if (!S_ISDIR(st.st_mode)) { + error_msg("component %s is not an executable plain file", filename); + exitstatus = 1; + } + + free(namelist[i]); + free(filename); + } + free(namelist); + + return(exitstatus); +} |