X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=debianutils%2Frun_parts.c;h=7c38fa11f92ac0be075085f474ec69100a0800b3;hb=dc4178050a9e150d26fe7041191a5d124fcdf03c;hp=3ec4b9d10ee9cc172ae8cb86011712e93d711e08;hpb=8f0722a53b9a88c0b4e60b79e4362d0f31c32c54;p=oweals%2Fbusybox.git diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c index 3ec4b9d10..7c38fa11f 100644 --- a/debianutils/run_parts.c +++ b/debianutils/run_parts.c @@ -2,250 +2,172 @@ /* * Mini run-parts implementation for busybox * + * Copyright (C) 2007 Bernhard Reutner-Fischer * - * Copyright (C) 2001 by Emanuele Aina + * Based on a older version that was in busybox which was 1k big.. + * Copyright (C) 2001 by Emanuele Aina * * Based on the Debian run-parts program, version 1.15 * Copyright (C) 1996 Jeff Noxon , * Copyright (C) 1996-1999 Guy Maor - * * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA * + * 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 + * 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. */ - -/* TODO - * done - convert calls to error in perror... and remove error() - * done - convert malloc/realloc to their x... counterparts - * done - remove catch_sigchld - * done - use bb's concat_path_file() - * done - declare run_parts_main() as extern and any other function as static? + * 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 -#include -#include -/* #include */ -#include -#include -#include -#include -#include -#include -#include -#include - -#include "busybox.h" - -static int test_mode = 0; -static int exitstatus = 0; - -static int argcount = 0, argsize = 0; -static char **args = 0; - - -/* set_umask */ -/* Check and set the umask of the program executed. As stated in the original - * run-parts, the octal conversion in libc is not foolproof; it will take the - * 8 and 9 digits under some circumstances. We'll just have to live with it. +#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 void set_umask (void) +static bool invalid_name(const char *c) { - int mask, result; + c = bb_basename(c); - /*TODO - * We must substitute sscanf, according to bb's style guide? */ - result = sscanf (optarg, "%o", &mask); - if ((result != 1) || (mask > 07777) || (mask < 0)) { - perror_msg_and_die ("bad umask value"); - } + while (*c && (isalnum(*c) || *c == '_' || *c == '-')) + c++; - umask (mask); + return *c; /* TRUE (!0) if terminating NUL is not reached */ } -/* add_argument */ -/* Add an argument to the commands that we will call. Called once for - every argument. */ -static void add_argument (char *newarg) +static int bb_alphasort(const void *p1, const void *p2) { - if (argcount+1 >= argsize) { - argsize = argsize ? argsize*2 : 4; - /*TODO if we convert to xrealloc we lose the verbose error message */ - args = realloc(args, argsize * (sizeof(char*))); - if (!args) { - perror_msg_and_die ("failed to reallocate memory for arguments"); - } - } - args[argcount++] = newarg; - args[argcount] = 0; + int r = strcmp(*(char **) p1, *(char **) p2); + return (option_mask32 & OPT_r) ? -r : r; } -/* valid_name */ -/* True or false? Is this a valid filename (upper/lower alpha, digits, - * underscores, and hyphens only?) - */ - -static int valid_name (const struct dirent *d) +static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth) { - char *c = d->d_name; - while (*c) { - if (!isalnum(*c) && *c!='_' && *c!='-') { - return 0; - } - ++c; + 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; } - return 1; -} + names = xrealloc_vector(names, 4, cur); + names[cur++] = xstrdup(file); + /*names[cur] = NULL; - xrealloc_vector did it */ -/* run_part */ -/* Execute a file */ - -static void run_part (char *progname) -{ - int result; - int pid; - - - if ((pid=fork()) < 0) { - perror_msg_and_die ("failed to fork"); - } - else if (!pid) { - args[0] = progname; - execv (progname, args); - perror_msg_and_die ("failed to exec %s", progname); - } - - if (0) { - - } else { - - waitpid(pid, &result, 0); - } - - if (WIFEXITED (result) && WEXITSTATUS(result)) { - perror_msg ("%s exited with return code %d", progname, WEXITSTATUS(result)); - exitstatus = 1; - } - else if (WIFSIGNALED (result)) { - perror_msg ("%s exited because of uncaught signal %d", progname, - WTERMSIG(result)); - exitstatus = 1; - } + return TRUE; } -/* run_parts */ -/* Find the parts to run & call run_part() */ - -static void run_parts (char *dir_name) +#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 UNUSED_PARAM, char **argv) { - struct dirent **namelist = 0; - char *filename; - int entries, i; - struct stat st; - - /* -- */ - - /* scandir() isn't POSIX, but it makes things easy. */ - entries = scandir (dir_name, &namelist, valid_name, alphasort); - - if (entries < 0) { - perror_msg_and_die ("failed to open directory %s", dir_name); - } - - for (i = 0; i < entries; i++) { - - /* -- */ - - filename = concat_path_file (dir_name, namelist[i]->d_name); - - if (stat (filename, &st) < 0) { - perror_msg_and_die ("failed to stat component %s", filename); - } - if (S_ISREG(st.st_mode) && !access (filename, X_OK)) { - if (test_mode) - printf ("run-parts would run %s\n", filename); - else { - run_part (filename); - } - } - - else if (!S_ISDIR(st.st_mode)) { - error_msg ("component %s is not an executable plain file", - filename); - exitstatus = 1; - } - - free (namelist[i]); - free (filename); - } - free (namelist); -} + 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); + } -/* run_parts_main */ -/* Process options */ -int run_parts_main (int argc, char *argv[]) -{ - umask (022); - add_argument(0); - - for (;;) { - int c; - - opterr = 0; - c = getopt(argc, argv, "tu:a:"); - - if (c == EOF) - break; - switch (c) { - case 't': /* Enable test mode */ - test_mode = 1; - break; - case 'u': /* Set the umask of the programs executed */ - set_umask (); - break; - case 'a': /* Pass an argument to the programs */ - add_argument (optarg); - break; - default: - show_usage(); - } - } - - /* We require exactly one argument: the directory name */ - if (optind != (argc - 1)) { - show_usage(); - } - - run_parts (argv[optind]); - - return exitstatus; + return n; }