/*
* 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>
*
- *
- * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* 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 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 "busybox.h"
-#include <getopt.h>
-
-static const struct option runparts_long_options[] = {
- { "test", 0, NULL, 't' },
- { "umask", 1, NULL, 'u' },
- { "arg", 1, NULL, 'a' },
- { 0, 0, 0, 0 }
+//config:config RUN_PARTS
+//config: bool "run-parts (6.1 kb)"
+//config: default y
+//config: help
+//config: run-parts is a utility designed to run all the scripts in a directory.
+//config:
+//config: It is useful to set up a directory like cron.daily, where you need to
+//config: execute all the scripts in that directory.
+//config:
+//config: In this implementation of run-parts some features (such as report
+//config: mode) are not implemented.
+//config:
+//config: Unless you know that run-parts is used in some of your scripts
+//config: you can safely say N here.
+//config:
+//config:config FEATURE_RUN_PARTS_LONG_OPTIONS
+//config: bool "Enable long options"
+//config: default y
+//config: depends on RUN_PARTS && LONG_OPTS
+//config:
+//config:config FEATURE_RUN_PARTS_FANCY
+//config: bool "Support additional arguments"
+//config: default y
+//config: depends on RUN_PARTS
+//config: help
+//config: Support additional options:
+//config: -l --list print the names of the all matching files (not
+//config: limited to executables), but don't actually run them.
+
+//applet:IF_RUN_PARTS(APPLET_ODDNAME(run-parts, run_parts, BB_DIR_BIN, BB_SUID_DROP, run_parts))
+
+//kbuild:lib-$(CONFIG_RUN_PARTS) += run_parts.o
+
+//usage:#define run_parts_trivial_usage
+//usage: "[-a ARG]... [-u UMASK] "
+//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS("[--reverse] [--test] [--exit-on-error] "IF_FEATURE_RUN_PARTS_FANCY("[--list] "))
+//usage: "DIRECTORY"
+//usage:#define run_parts_full_usage "\n\n"
+//usage: "Run a bunch of scripts in DIRECTORY\n"
+//usage: "\n -a ARG Pass ARG as argument to scripts"
+//usage: "\n -u UMASK Set UMASK before running scripts"
+//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS(
+//usage: "\n --reverse Reverse execution order"
+//usage: "\n --test Dry run"
+//usage: "\n --exit-on-error Exit if a script exits with non-zero"
+//usage: IF_FEATURE_RUN_PARTS_FANCY(
+//usage: "\n --list Print names of matching files even if they are not executable"
+//usage: )
+//usage: )
+//usage:
+//usage:#define run_parts_example_usage
+//usage: "$ run-parts -a start /etc/init.d\n"
+//usage: "$ run-parts -a stop=now /etc/init.d\n\n"
+//usage: "Let's assume you have a script foo/dosomething:\n"
+//usage: "#!/bin/sh\n"
+//usage: "for i in $*; do eval $i; done; unset i\n"
+//usage: "case \"$1\" in\n"
+//usage: "start*) echo starting something;;\n"
+//usage: "stop*) set -x; shutdown -h $stop;;\n"
+//usage: "esac\n\n"
+//usage: "Running this yields:\n"
+//usage: "$run-parts -a stop=+4m foo/\n"
+//usage: "+ shutdown -h +4m"
+
+#include "libbb.h"
+#include "common_bufsiz.h"
+
+struct globals {
+ char **names;
+ int cur;
+ char *cmd[2 /* using 1 provokes compiler warning */];
+} FIX_ALIASING;
+#define G (*(struct globals*)bb_common_bufsiz1)
+#define names (G.names)
+#define cur (G.cur )
+#define cmd (G.cmd )
+#define INIT_G() do { setup_common_bufsiz(); } while (0)
+
+enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
+
+enum {
+ OPT_a = (1 << 0),
+ OPT_u = (1 << 1),
+ OPT_r = (1 << 2) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
+ OPT_t = (1 << 3) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
+ OPT_e = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
+ OPT_l = (1 << 5) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
+ * ENABLE_FEATURE_RUN_PARTS_FANCY,
};
-/* valid_name */
-/* True or false? Is this a valid filename (upper/lower alpha, digits,
+/* Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
-static int valid_name(const struct dirent *d)
+static bool invalid_name(const char *c)
{
- const char *c = d->d_name;
+ c = bb_basename(c);
- while (*c) {
- if (!isalnum(*c) && (*c != '_') && (*c != '-')) {
- return 0;
- }
- ++c;
- }
- return 1;
+ while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
+ c++;
+
+ return *c; /* TRUE (!0) if terminating NUL is not reached */
}
-/* test mode = 1 is the same as official run_parts
- * test_mode = 2 means to fail silently on missing directories
- */
-static int run_parts(char **args, const unsigned char test_mode)
+static int bb_alphasort(const void *p1, const void *p2)
{
- struct dirent **namelist = 0;
- struct stat st;
- char *filename;
- char *arg0 = args[0];
- int entries;
- int i;
- int exitstatus = 0;
-
-#if __GNUC__
- /* Avoid longjmp clobbering */
- (void) &i;
- (void) &exitstatus;
-#endif
- /* scandir() isn't POSIX, but it makes things easy. */
- entries = scandir(arg0, &namelist, valid_name, alphasort);
+ int r = strcmp(*(char **) p1, *(char **) p2);
+ return (option_mask32 & OPT_r) ? -r : r;
+}
- if (entries == -1) {
- if (test_mode & 2) {
- return 2;
- }
- bb_perror_msg_and_die("cannot open '%s'", arg0);
+static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
+{
+ if (depth == 1)
+ return TRUE;
+
+ if (depth == 2
+ && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
+ || invalid_name(file)
+ || (!(option_mask32 & OPT_l) && access(file, X_OK) != 0))
+ ) {
+ return SKIP;
}
- for (i = 0; i < entries; i++) {
- filename = concat_path_file(arg0, namelist[i]->d_name);
-
- xstat(filename, &st);
- if (S_ISREG(st.st_mode) && !access(filename, X_OK)) {
- if (test_mode) {
- puts(filename);
- } else {
- /* exec_errno is common vfork variable */
- volatile int exec_errno = 0;
- int result;
- int pid;
-
- if ((pid = vfork()) < 0) {
- bb_perror_msg_and_die("failed to fork");
- } else if (!pid) {
- args[0] = filename;
- execve(filename, args, environ);
- exec_errno = errno;
- _exit(1);
- }
-
- waitpid(pid, &result, 0);
- if (exec_errno) {
- errno = exec_errno;
- bb_perror_msg("failed to exec %s", filename);
- exitstatus = 1;
- }
- if (WIFEXITED(result) && WEXITSTATUS(result)) {
- bb_perror_msg("%s exited with return code %d", filename, WEXITSTATUS(result));
- exitstatus = 1;
- } else if (WIFSIGNALED(result)) {
- bb_perror_msg("%s exited because of uncaught signal %d", filename, WTERMSIG(result));
- exitstatus = 1;
- }
- }
- } else if (!S_ISDIR(st.st_mode)) {
- bb_error_msg("component %s is not an executable plain file", filename);
- exitstatus = 1;
- }
+ names = xrealloc_vector(names, 4, cur);
+ names[cur++] = xstrdup(file);
+ /*names[cur] = NULL; - xrealloc_vector did it */
- free(namelist[i]);
- free(filename);
- }
- free(namelist);
-
- return exitstatus;
+ return TRUE;
}
+#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
+static const char runparts_longopts[] ALIGN1 =
+ "arg\0" Required_argument "a"
+ "umask\0" Required_argument "u"
+//TODO: "verbose\0" No_argument "v"
+ "reverse\0" No_argument "\xf0"
+ "test\0" No_argument "\xf1"
+ "exit-on-error\0" No_argument "\xf2"
+# if ENABLE_FEATURE_RUN_PARTS_FANCY
+ "list\0" No_argument "\xf3"
+# endif
+ ;
+# define GETOPT32 getopt32long
+# define LONGOPTS ,runparts_longopts
+#else
+# define GETOPT32 getopt32
+# define LONGOPTS
+#endif
-/* run_parts_main */
-/* Process options */
-int run_parts_main(int argc, char **argv)
+int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int run_parts_main(int argc UNUSED_PARAM, char **argv)
{
- char **args = xmalloc(2 * sizeof(char *));
- unsigned char test_mode = 0;
- unsigned short argcount = 1;
- int opt;
-
- umask(022);
-
- while ((opt = getopt_long(argc, argv, "tu:a:",
- runparts_long_options, NULL)) > 0)
- {
- switch (opt) {
- /* Enable test mode */
- case 't':
- test_mode++;
- break;
- /* Set the umask of the programs executed */
- case 'u':
- /* 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.
- */
- umask(xstrtoul_range(optarg, 8, 0, 07777));
- break;
- /* Pass an argument to the programs */
- case 'a':
- /* Add an argument to the commands that we will call.
- * Called once for every argument. */
- args = xrealloc(args, (argcount + 2) * (sizeof(char *)));
- args[argcount++] = optarg;
- break;
- default:
- bb_show_usage();
- }
- }
+ const char *umask_p = "22";
+ llist_t *arg_list = NULL;
+ unsigned n;
+ int ret;
+
+ INIT_G();
/* We require exactly one argument: the directory name */
- if (optind != (argc - 1)) {
- bb_show_usage();
+ GETOPT32(argv, "^" "a:*u:" "\0" "=1" LONGOPTS,
+ &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 */
- args[0] = argv[optind];
- args[argcount] = 0;
+ /* 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 = spawn_and_wait(cmd);
+ if (ret == 0)
+ continue;
+ n = 1;
+ if (ret < 0)
+ bb_perror_msg("can't execute '%s'", name);
+ else /* ret > 0 */
+ bb_error_msg("%s: exit status %u", name, ret & 0xff);
+
+ if (option_mask32 & OPT_e)
+ xfunc_die();
+ }
- return run_parts(args, test_mode);
+ return n;
}
projects / oweals / busybox.git / blobdiff