[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini run-parts implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2007 Bernhard Reutner-Fischer
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| 6 | *
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| 7 | * Based on a older version that was in busybox which was 1k big..
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| 8 | * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
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| 9 | *
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| 10 | * Based on the Debian run-parts program, version 1.15
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| 11 | * Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
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| 12 | * Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
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| 13 | *
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| 14 | *
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| 15 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 16 | */
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| 17 |
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| 18 | /* This is my first attempt to write a program in C (well, this is my first
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| 19 | * attempt to write a program! :-) . */
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| 20 |
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| 21 | /* This piece of code is heavily based on the original version of run-parts,
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| 22 | * taken from debian-utils. I've only removed the long options and a the
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| 23 | * report mode. As the original run-parts support only long options, I've
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| 24 | * broken compatibility because the BusyBox policy doesn't allow them.
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| 25 | * The supported options are:
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| 26 | * -t test. Print the name of the files to be executed, without
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| 27 | * execute them.
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| 28 | * -a ARG argument. Pass ARG as an argument the program executed. It can
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| 29 | * be repeated to pass multiple arguments.
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| 30 | * -u MASK umask. Set the umask of the program executed to MASK.
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| 31 | */
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| 32 |
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| 33 | #include "libbb.h"
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| 34 |
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| 35 | struct globals {
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| 36 | char **names;
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| 37 | int cur;
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| 38 | char *cmd[1];
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| 39 | } FIX_ALIASING;
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| 40 | #define G (*(struct globals*)&bb_common_bufsiz1)
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| 41 | #define names (G.names)
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| 42 | #define cur (G.cur )
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| 43 | #define cmd (G.cmd )
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| 44 |
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| 45 | enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
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| 46 |
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| 47 | enum {
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| 48 | OPT_r = (1 << 0),
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| 49 | OPT_a = (1 << 1),
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| 50 | OPT_u = (1 << 2),
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| 51 | OPT_t = (1 << 3),
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| 52 | OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY,
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| 53 | };
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| 54 |
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| 55 | #if ENABLE_FEATURE_RUN_PARTS_FANCY
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| 56 | #define list_mode (option_mask32 & OPT_l)
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| 57 | #else
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| 58 | #define list_mode 0
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| 59 | #endif
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| 60 |
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| 61 | /* Is this a valid filename (upper/lower alpha, digits,
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| 62 | * underscores, and hyphens only?)
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| 63 | */
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| 64 | static bool invalid_name(const char *c)
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| 65 | {
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| 66 | c = bb_basename(c);
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| 67 |
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| 68 | while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
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| 69 | c++;
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| 70 |
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| 71 | return *c; /* TRUE (!0) if terminating NUL is not reached */
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| 72 | }
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| 73 |
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| 74 | static int bb_alphasort(const void *p1, const void *p2)
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| 75 | {
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| 76 | int r = strcmp(*(char **) p1, *(char **) p2);
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| 77 | return (option_mask32 & OPT_r) ? -r : r;
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| 78 | }
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| 79 |
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| 80 | static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
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| 81 | {
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| 82 | if (depth == 1)
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| 83 | return TRUE;
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| 84 |
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| 85 | if (depth == 2
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| 86 | && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
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| 87 | || invalid_name(file)
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| 88 | || (!list_mode && access(file, X_OK) != 0))
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| 89 | ) {
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| 90 | return SKIP;
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| 91 | }
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| 92 |
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| 93 | names = xrealloc_vector(names, 4, cur);
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| 94 | names[cur++] = xstrdup(file);
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| 95 | /*names[cur] = NULL; - xrealloc_vector did it */
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| 96 |
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| 97 | return TRUE;
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| 98 | }
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| 99 |
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| 100 | #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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| 101 | static const char runparts_longopts[] ALIGN1 =
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| 102 | "arg\0" Required_argument "a"
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| 103 | "umask\0" Required_argument "u"
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| 104 | "test\0" No_argument "t"
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| 105 | #if ENABLE_FEATURE_RUN_PARTS_FANCY
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| 106 | "list\0" No_argument "l"
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| 107 | "reverse\0" No_argument "r"
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| 108 | //TODO: "verbose\0" No_argument "v"
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| 109 | #endif
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| 110 | ;
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| 111 | #endif
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| 112 |
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| 113 | int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 114 | int run_parts_main(int argc UNUSED_PARAM, char **argv)
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| 115 | {
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| 116 | const char *umask_p = "22";
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| 117 | llist_t *arg_list = NULL;
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| 118 | unsigned n;
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| 119 | int ret;
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| 120 |
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| 121 | #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
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| 122 | applet_long_options = runparts_longopts;
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| 123 | #endif
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| 124 | /* We require exactly one argument: the directory name */
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| 125 | opt_complementary = "=1:a::";
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| 126 | getopt32(argv, "ra:u:t"IF_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
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| 127 |
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| 128 | umask(xstrtou_range(umask_p, 8, 0, 07777));
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| 129 |
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| 130 | n = 1;
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| 131 | while (arg_list && n < NUM_CMD) {
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| 132 | cmd[n++] = llist_pop(&arg_list);
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| 133 | }
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| 134 | /* cmd[n] = NULL; - is already zeroed out */
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| 135 |
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| 136 | /* run-parts has to sort executables by name before running them */
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| 137 |
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| 138 | recursive_action(argv[optind],
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| 139 | ACTION_RECURSE|ACTION_FOLLOWLINKS,
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| 140 | act, /* file action */
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| 141 | act, /* dir action */
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| 142 | NULL, /* user data */
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| 143 | 1 /* depth */
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| 144 | );
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| 145 |
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| 146 | if (!names)
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| 147 | return 0;
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| 148 |
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| 149 | qsort(names, cur, sizeof(char *), bb_alphasort);
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| 150 |
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| 151 | n = 0;
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| 152 | while (1) {
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| 153 | char *name = *names++;
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| 154 | if (!name)
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| 155 | break;
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| 156 | if (option_mask32 & (OPT_t | OPT_l)) {
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| 157 | puts(name);
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| 158 | continue;
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| 159 | }
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| 160 | cmd[0] = name;
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| 161 | ret = spawn_and_wait(cmd);
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| 162 | if (ret == 0)
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| 163 | continue;
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| 164 | n = 1;
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| 165 | if (ret < 0)
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| 166 | bb_perror_msg("can't execute '%s'", name);
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| 167 | else /* ret > 0 */
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| 168 | bb_error_msg("%s exited with code %d", name, ret & 0xff);
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| 169 | }
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| 170 |
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| 171 | return n;
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| 172 | }
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