1 /* vi: set sw=4 ts=4: */
3 * Mini run-parts implementation for busybox
5 * Copyright (C) 2007 Bernhard Reutner-Fischer
7 * Based on a older version that was in busybox which was 1k big..
8 * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
10 * Based on the Debian run-parts program, version 1.15
11 * Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
12 * Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
15 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
18 /* This is my first attempt to write a program in C (well, this is my first
19 * attempt to write a program! :-) . */
21 /* This piece of code is heavily based on the original version of run-parts,
22 * taken from debian-utils. I've only removed the long options and a the
23 * report mode. As the original run-parts support only long options, I've
24 * broken compatibility because the BusyBox policy doesn't allow them.
25 * The supported options are:
26 * -t test. Print the name of the files to be executed, without
28 * -a ARG argument. Pass ARG as an argument the program executed. It can
29 * be repeated to pass multiple arguments.
30 * -u MASK umask. Set the umask of the program executed to MASK.
33 //usage:#define run_parts_trivial_usage
34 //usage: "[-t] "IF_FEATURE_RUN_PARTS_FANCY("[-l] ")"[-a ARG] [-u MASK] DIRECTORY"
35 //usage:#define run_parts_full_usage "\n\n"
36 //usage: "Run a bunch of scripts in DIRECTORY\n"
37 //usage: "\n -t Print what would be run, but don't actually run anything"
38 //usage: "\n -a ARG Pass ARG as argument for every program"
39 //usage: "\n -u MASK Set the umask to MASK before running every program"
40 //usage: IF_FEATURE_RUN_PARTS_FANCY(
41 //usage: "\n -l Print names of all matching files even if they are not executable"
44 //usage:#define run_parts_example_usage
45 //usage: "$ run-parts -a start /etc/init.d\n"
46 //usage: "$ run-parts -a stop=now /etc/init.d\n\n"
47 //usage: "Let's assume you have a script foo/dosomething:\n"
48 //usage: "#!/bin/sh\n"
49 //usage: "for i in $*; do eval $i; done; unset i\n"
50 //usage: "case \"$1\" in\n"
51 //usage: "start*) echo starting something;;\n"
52 //usage: "stop*) set -x; shutdown -h $stop;;\n"
54 //usage: "Running this yields:\n"
55 //usage: "$run-parts -a stop=+4m foo/\n"
56 //usage: "+ shutdown -h +4m"
65 #define G (*(struct globals*)&bb_common_bufsiz1)
66 #define names (G.names)
69 #define INIT_G() do { } while (0)
71 enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
78 OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY,
81 #if ENABLE_FEATURE_RUN_PARTS_FANCY
82 #define list_mode (option_mask32 & OPT_l)
87 /* Is this a valid filename (upper/lower alpha, digits,
88 * underscores, and hyphens only?)
90 static bool invalid_name(const char *c)
94 while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
97 return *c; /* TRUE (!0) if terminating NUL is not reached */
100 static int bb_alphasort(const void *p1, const void *p2)
102 int r = strcmp(*(char **) p1, *(char **) p2);
103 return (option_mask32 & OPT_r) ? -r : r;
106 static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
112 && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
113 || invalid_name(file)
114 || (!list_mode && access(file, X_OK) != 0))
119 names = xrealloc_vector(names, 4, cur);
120 names[cur++] = xstrdup(file);
121 /*names[cur] = NULL; - xrealloc_vector did it */
126 #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
127 static const char runparts_longopts[] ALIGN1 =
128 "arg\0" Required_argument "a"
129 "umask\0" Required_argument "u"
130 "test\0" No_argument "t"
131 #if ENABLE_FEATURE_RUN_PARTS_FANCY
132 "list\0" No_argument "l"
133 "reverse\0" No_argument "r"
134 //TODO: "verbose\0" No_argument "v"
139 int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
140 int run_parts_main(int argc UNUSED_PARAM, char **argv)
142 const char *umask_p = "22";
143 llist_t *arg_list = NULL;
149 #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
150 applet_long_options = runparts_longopts;
152 /* We require exactly one argument: the directory name */
153 opt_complementary = "=1:a::";
154 getopt32(argv, "ra:u:t"IF_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
156 umask(xstrtou_range(umask_p, 8, 0, 07777));
159 while (arg_list && n < NUM_CMD) {
160 cmd[n++] = llist_pop(&arg_list);
162 /* cmd[n] = NULL; - is already zeroed out */
164 /* run-parts has to sort executables by name before running them */
166 recursive_action(argv[optind],
167 ACTION_RECURSE|ACTION_FOLLOWLINKS,
168 act, /* file action */
169 act, /* dir action */
170 NULL, /* user data */
177 qsort(names, cur, sizeof(char *), bb_alphasort);
181 char *name = *names++;
184 if (option_mask32 & (OPT_t | OPT_l)) {
189 ret = spawn_and_wait(cmd);
194 bb_perror_msg("can't execute '%s'", name);
196 bb_error_msg("%s exited with code %d", name, ret & 0xff);