X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=debianutils%2Frun_parts.c;h=e4d61df359014c845fabeb8d35fc5f83e533466a;hb=23427a63fc8f7742210d329b9edd77a6e547d2cd;hp=90314354c85a256fdfdc3e5b174414bee79be25d;hpb=ba248206fe50b4b905e220cdb68f4959593c17e7;p=oweals%2Fbusybox.git diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c index 90314354c..e4d61df35 100644 --- a/debianutils/run_parts.c +++ b/debianutils/run_parts.c @@ -2,113 +2,234 @@ /* * Mini run-parts implementation for busybox * + * Copyright (C) 2007 Bernhard Reutner-Fischer * - * Copyright (C) 2001 by Emanuele Aina + * Based on a older version that was in busybox which was 1k big. + * Copyright (C) 2001 by Emanuele Aina * * Based on the Debian run-parts program, version 1.15 * Copyright (C) 1996 Jeff Noxon , * Copyright (C) 1996-1999 Guy Maor * - * - * 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 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? */ +//config:config RUN_PARTS +//config: bool "run-parts (5.6 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)) -#include -#include +//kbuild:lib-$(CONFIG_RUN_PARTS) += run_parts.o -#include "busybox.h" +//usage:#define run_parts_trivial_usage +//usage: "[-a ARG]... [-u UMASK] " +//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS("[--reverse] [--test] [--exit-on-error] "IF_FEATURE_RUN_PARTS_FANCY("[--list] ")) +//usage: "DIRECTORY" +//usage:#define run_parts_full_usage "\n\n" +//usage: "Run a bunch of scripts in DIRECTORY\n" +//usage: "\n -a ARG Pass ARG as argument to scripts" +//usage: "\n -u UMASK Set UMASK before running scripts" +//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS( +//usage: "\n --reverse Reverse execution order" +//usage: "\n --test Dry run" +//usage: "\n --exit-on-error Exit if a script exits with non-zero" +//usage: IF_FEATURE_RUN_PARTS_FANCY( +//usage: "\n --list Print names of matching files even if they are not executable" +//usage: ) +//usage: ) +//usage: +//usage:#define run_parts_example_usage +//usage: "$ 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" -static const struct option runparts_long_options[] = { - { "test", 0, NULL, 't' }, - { "umask", 1, NULL, 'u' }, - { "arg", 1, NULL, 'a' }, - { 0, 0, 0, 0 } +#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, }; -extern char **environ; +/* Is this a valid filename (upper/lower alpha, digits, + * underscores, and hyphens only?) + */ +static bool invalid_name(const char *c) +{ + c = bb_basename(c); + + while (*c && (isalnum(*c) || *c == '_' || *c == '-')) + c++; + + return *c; /* TRUE (!0) if terminating NUL is not reached */ +} -/* run_parts_main */ -/* Process options */ -int run_parts_main(int argc, char **argv) +static int bb_alphasort(const void *p1, const void *p2) { - 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(bb_xgetlarg(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(); - } + int r = strcmp(*(char **) p1, *(char **) p2); + return (option_mask32 & OPT_r) ? -r : r; +} + +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; } + names = xrealloc_vector(names, 4, cur); + names[cur++] = xstrdup(file); + /*names[cur] = NULL; - xrealloc_vector did it */ + + 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 + +int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int run_parts_main(int argc UNUSED_PARAM, char **argv) +{ + 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 */ + + /* 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; - args[0] = argv[optind]; - args[argcount] = 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, environ)); + return n; }