173 lines
4.3 KiB
C
173 lines
4.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini run-parts implementation for busybox
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*
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* Copyright (C) 2007 Bernhard Reutner-Fischer
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*
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* Based on a older version that was in busybox which was 1k big..
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* Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
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*
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* Based on the Debian run-parts program, version 1.15
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* Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
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* Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
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*
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*
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* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
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*/
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/* This is my first attempt to write a program in C (well, this is my first
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* attempt to write a program! :-) . */
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/* This piece of code is heavily based on the original version of run-parts,
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* taken from debian-utils. I've only removed the long options and a the
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* report mode. As the original run-parts support only long options, I've
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* broken compatibility because the BusyBox policy doesn't allow them.
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* The supported options are:
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* -t test. Print the name of the files to be executed, without
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* execute them.
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* -a ARG argument. Pass ARG as an argument the program executed. It can
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* be repeated to pass multiple arguments.
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* -u MASK umask. Set the umask of the program executed to MASK.
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*/
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#include "libbb.h"
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struct globals {
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char **names;
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int cur;
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char *cmd[1];
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} FIX_ALIASING;
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#define G (*(struct globals*)&bb_common_bufsiz1)
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#define names (G.names)
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#define cur (G.cur )
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#define cmd (G.cmd )
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enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
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enum {
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OPT_r = (1 << 0),
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OPT_a = (1 << 1),
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OPT_u = (1 << 2),
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OPT_t = (1 << 3),
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OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY,
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};
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#if ENABLE_FEATURE_RUN_PARTS_FANCY
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#define list_mode (option_mask32 & OPT_l)
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#else
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#define list_mode 0
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#endif
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/* Is this a valid filename (upper/lower alpha, digits,
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* underscores, and hyphens only?)
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*/
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static bool invalid_name(const char *c)
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{
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c = bb_basename(c);
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while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
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c++;
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return *c; /* TRUE (!0) if terminating NUL is not reached */
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}
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static int bb_alphasort(const void *p1, const void *p2)
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{
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int r = strcmp(*(char **) p1, *(char **) p2);
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return (option_mask32 & OPT_r) ? -r : r;
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}
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static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
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{
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if (depth == 1)
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return TRUE;
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if (depth == 2
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&& ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
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|| invalid_name(file)
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|| (!list_mode && access(file, X_OK) != 0))
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) {
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return SKIP;
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}
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names = xrealloc_vector(names, 4, cur);
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names[cur++] = xstrdup(file);
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/*names[cur] = NULL; - xrealloc_vector did it */
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return TRUE;
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}
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#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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static const char runparts_longopts[] ALIGN1 =
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"arg\0" Required_argument "a"
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"umask\0" Required_argument "u"
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"test\0" No_argument "t"
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#if ENABLE_FEATURE_RUN_PARTS_FANCY
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"list\0" No_argument "l"
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"reverse\0" No_argument "r"
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//TODO: "verbose\0" No_argument "v"
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#endif
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;
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#endif
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int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int run_parts_main(int argc UNUSED_PARAM, char **argv)
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{
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const char *umask_p = "22";
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llist_t *arg_list = NULL;
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unsigned n;
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int ret;
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#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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applet_long_options = runparts_longopts;
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#endif
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/* We require exactly one argument: the directory name */
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opt_complementary = "=1:a::";
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getopt32(argv, "ra:u:t"IF_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
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umask(xstrtou_range(umask_p, 8, 0, 07777));
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n = 1;
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while (arg_list && n < NUM_CMD) {
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cmd[n++] = llist_pop(&arg_list);
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}
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/* cmd[n] = NULL; - is already zeroed out */
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/* run-parts has to sort executables by name before running them */
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recursive_action(argv[optind],
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ACTION_RECURSE|ACTION_FOLLOWLINKS,
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act, /* file action */
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act, /* dir action */
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NULL, /* user data */
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1 /* depth */
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);
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if (!names)
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return 0;
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qsort(names, cur, sizeof(char *), bb_alphasort);
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n = 0;
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while (1) {
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char *name = *names++;
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if (!name)
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break;
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if (option_mask32 & (OPT_t | OPT_l)) {
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puts(name);
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continue;
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}
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cmd[0] = name;
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ret = spawn_and_wait(cmd);
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if (ret == 0)
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continue;
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n = 1;
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if (ret < 0)
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bb_perror_msg("can't execute '%s'", name);
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else /* ret > 0 */
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bb_error_msg("%s exited with code %d", name, ret & 0xff);
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}
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return n;
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}
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