| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini run-parts implementation for busybox |
| * |
| * Copyright (C) 2007 Bernhard 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 GPL v2 or later, see file LICENSE in this tarball for details. |
| */ |
| |
| /* 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 |
| * 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. |
| */ |
| |
| #include "libbb.h" |
| |
| struct globals { |
| char **names; |
| int cur; |
| char *cmd[1]; |
| }; |
| #define G (*(struct globals*)&bb_common_bufsiz1) |
| #define names (G.names) |
| #define cur (G.cur ) |
| #define cmd (G.cmd ) |
| |
| enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 }; |
| |
| enum { |
| OPT_r = (1 << 0), |
| OPT_a = (1 << 1), |
| OPT_u = (1 << 2), |
| OPT_t = (1 << 3), |
| OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY, |
| }; |
| |
| #if ENABLE_FEATURE_RUN_PARTS_FANCY |
| #define list_mode (option_mask32 & OPT_l) |
| #else |
| #define list_mode 0 |
| #endif |
| |
| /* 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 act(const char *file, struct stat *statbuf, void *args ATTRIBUTE_UNUSED, int depth) |
| { |
| if (depth == 1) |
| return TRUE; |
| |
| if (depth == 2 |
| && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK)) |
| || invalid_name(file) |
| || (!list_mode && access(file, X_OK) != 0)) |
| ) { |
| return SKIP; |
| } |
| |
| names = xrealloc(names, (cur + 2) * sizeof(names[0])); |
| names[cur++] = xstrdup(file); |
| names[cur] = NULL; |
| |
| 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" |
| "test\0" No_argument "t" |
| #if ENABLE_FEATURE_RUN_PARTS_FANCY |
| "list\0" No_argument "l" |
| "reverse\0" No_argument "r" |
| //TODO: "verbose\0" No_argument "v" |
| #endif |
| ; |
| #endif |
| |
| int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int run_parts_main(int argc ATTRIBUTE_UNUSED, char **argv) |
| { |
| const char *umask_p = "22"; |
| llist_t *arg_list = NULL; |
| unsigned n; |
| int ret; |
| |
| #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS |
| applet_long_options = runparts_longopts; |
| #endif |
| /* We require exactly one argument: the directory name */ |
| /* We require exactly one argument: the directory name */ |
| opt_complementary = "=1:a::"; |
| getopt32(argv, "ra:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &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 = wait4pid(spawn(cmd)); |
| if (ret == 0) |
| continue; |
| n = 1; |
| if (ret < 0) |
| bb_perror_msg("can't exec %s", name); |
| else /* ret > 0 */ |
| bb_error_msg("%s exited with code %d", name, ret); |
| } |
| |
| return n; |
| } |