| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini run-parts implementation for busybox |
| * |
| * Copyright (C) 2007 Bernhard Reutner-Fischer |
| * |
| * 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 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 the |
| * report mode. As the original run-parts support only long options, I've |
| * broken compatibility because the BusyBox policy doesn't allow them. |
| */ |
| //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)) |
| |
| //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, |
| }; |
| |
| /* 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 */ |
| } |
| |
| static int bb_alphasort(const void *p1, const void *p2) |
| { |
| 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 */ |
| 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; |
| |
| 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 n; |
| } |