/*
* Mini run-parts implementation for busybox
*
+ * Copyright (C) 2007 Bernhard Reutner-Fischer
*
- * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
+ * Based on a older version that was in busybox which was 1k big..
+ * 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
*
+ * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
/* 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
+ * 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?
+ * 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.
*/
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdlib.h>
-/* #include <sys/types.h> */
-#include <sys/wait.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <string.h>
-#include <errno.h>
-#include <ctype.h>
-
-#include "busybox.h"
-
-static int test_mode = 0;
-static int exitstatus = 0;
-
-static int argcount = 0, argsize = 0;
-static char **args = 0;
-
-
-/* set_umask */
-/* Check and set the umask of the program executed. As stated in the original
- * run-parts, the octal conversion in libc is not foolproof; it will take the
- * 8 and 9 digits under some circumstances. We'll just have to live with it.
+#include "libbb.h"
+
+struct globals {
+ char **names;
+ int cur;
+ char *cmd[1];
+};
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define names (G.names)
+#define cur (G.cur )
+#define cmd (G.cmd )
+
+enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
+
+enum {
+ OPT_r = (1 << 0),
+ OPT_a = (1 << 1),
+ OPT_u = (1 << 2),
+ OPT_t = (1 << 3),
+ OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY,
+};
+
+#if ENABLE_FEATURE_RUN_PARTS_FANCY
+#define list_mode (option_mask32 & OPT_l)
+#else
+#define list_mode 0
+#endif
+
+/* Is this a valid filename (upper/lower alpha, digits,
+ * underscores, and hyphens only?)
*/
-
-static void set_umask (void)
+static bool invalid_name(const char *c)
{
- int mask, result;
+ c = bb_basename(c);
- /*TODO
- * We must substitute sscanf, according to bb's style guide? */
- result = sscanf (optarg, "%o", &mask);
- if ((result != 1) || (mask > 07777) || (mask < 0)) {
- perror_msg_and_die ("bad umask value");
- }
+ while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
+ c++;
- umask (mask);
+ return *c; /* TRUE (!0) if terminating NUL is not reached */
}
-/* add_argument */
-/* Add an argument to the commands that we will call. Called once for
- every argument. */
-static void add_argument (char *newarg)
+static int bb_alphasort(const void *p1, const void *p2)
{
- if (argcount+1 >= argsize) {
- argsize = argsize ? argsize*2 : 4;
- /*TODO if we convert to xrealloc we lose the verbose error message */
- args = realloc(args, argsize * (sizeof(char*)));
- if (!args) {
- perror_msg_and_die ("failed to reallocate memory for arguments");
- }
- }
- args[argcount++] = newarg;
- args[argcount] = 0;
+ int r = strcmp(*(char **) p1, *(char **) p2);
+ return (option_mask32 & OPT_r) ? -r : r;
}
-/* 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)
+static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
{
- char *c = d->d_name;
- while (*c) {
- if (!isalnum(*c) && *c!='_' && *c!='-') {
- return 0;
- }
- ++c;
+ if (depth == 1)
+ return TRUE;
+
+ if (depth == 2
+ && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
+ || invalid_name(file)
+ || (!list_mode && access(file, X_OK) != 0))
+ ) {
+ return SKIP;
}
- return 1;
-}
+ names = xrealloc_vector(names, 4, cur);
+ names[cur++] = xstrdup(file);
+ /*names[cur] = NULL; - xrealloc_vector did it */
-/* run_part */
-/* Execute a file */
-
-static void run_part (char *progname)
-{
- int result;
- int pid;
-
-
- if ((pid=fork()) < 0) {
- perror_msg_and_die ("failed to fork");
- }
- else if (!pid) {
- args[0] = progname;
- execv (progname, args);
- perror_msg_and_die ("failed to exec %s", progname);
- }
-
- if (0) {
-
- } else {
-
- waitpid(pid, &result, 0);
- }
-
- if (WIFEXITED (result) && WEXITSTATUS(result)) {
- perror_msg ("%s exited with return code %d", progname, WEXITSTATUS(result));
- exitstatus = 1;
- }
- else if (WIFSIGNALED (result)) {
- perror_msg ("%s exited because of uncaught signal %d", progname,
- WTERMSIG(result));
- exitstatus = 1;
- }
+ return TRUE;
}
-/* run_parts */
-/* Find the parts to run & call run_part() */
-
-static void run_parts (char *dir_name)
+#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
+static const char runparts_longopts[] ALIGN1 =
+ "arg\0" Required_argument "a"
+ "umask\0" Required_argument "u"
+ "test\0" No_argument "t"
+#if ENABLE_FEATURE_RUN_PARTS_FANCY
+ "list\0" No_argument "l"
+ "reverse\0" No_argument "r"
+//TODO: "verbose\0" No_argument "v"
+#endif
+ ;
+#endif
+
+int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int run_parts_main(int argc UNUSED_PARAM, char **argv)
{
- struct dirent **namelist = 0;
- char *filename;
- int entries, i;
- struct stat st;
-
- /* -- */
-
- /* scandir() isn't POSIX, but it makes things easy. */
- entries = scandir (dir_name, &namelist, valid_name, alphasort);
-
- if (entries < 0) {
- perror_msg_and_die ("failed to open directory %s", dir_name);
- }
-
- for (i = 0; i < entries; i++) {
-
- /* -- */
-
- filename = concat_path_file (dir_name, 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 {
- run_part (filename);
- }
- }
-
- 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);
-}
+ const char *umask_p = "22";
+ llist_t *arg_list = NULL;
+ unsigned n;
+ int ret;
+
+#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
+ applet_long_options = runparts_longopts;
+#endif
+ /* We require exactly one argument: the directory name */
+ /* We require exactly one argument: the directory name */
+ opt_complementary = "=1:a::";
+ getopt32(argv, "ra:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
+
+ umask(xstrtou_range(umask_p, 8, 0, 07777));
+
+ n = 1;
+ while (arg_list && n < NUM_CMD) {
+ cmd[n++] = llist_pop(&arg_list);
+ }
+ /* cmd[n] = NULL; - is already zeroed out */
+
+ /* run-parts has to sort executables by name before running them */
+
+ recursive_action(argv[optind],
+ ACTION_RECURSE|ACTION_FOLLOWLINKS,
+ act, /* file action */
+ act, /* dir action */
+ NULL, /* user data */
+ 1 /* depth */
+ );
+
+ if (!names)
+ return 0;
+
+ qsort(names, cur, sizeof(char *), bb_alphasort);
+
+ n = 0;
+ while (1) {
+ char *name = *names++;
+ if (!name)
+ break;
+ if (option_mask32 & (OPT_t | OPT_l)) {
+ puts(name);
+ continue;
+ }
+ cmd[0] = name;
+ ret = wait4pid(spawn(cmd));
+ if (ret == 0)
+ continue;
+ n = 1;
+ if (ret < 0)
+ bb_perror_msg("can't exec %s", name);
+ else /* ret > 0 */
+ bb_error_msg("%s exited with code %d", name, ret);
+ }
-/* run_parts_main */
-/* Process options */
-int run_parts_main (int argc, char *argv[])
-{
- umask (022);
- add_argument(0);
-
- for (;;) {
- int c;
-
- opterr = 0;
- c = getopt(argc, argv, "tu:a:");
-
- if (c == EOF)
- break;
- switch (c) {
- case 't': /* Enable test mode */
- test_mode = 1;
- break;
- case 'u': /* Set the umask of the programs executed */
- set_umask ();
- break;
- case 'a': /* Pass an argument to the programs */
- add_argument (optarg);
- break;
- default:
- show_usage();
- }
- }
-
- /* We require exactly one argument: the directory name */
- if (optind != (argc - 1)) {
- show_usage();
- }
-
- run_parts (argv[optind]);
-
- return exitstatus;
+ return n;
}
projects / oweals / busybox.git / blobdiff