diff options
Diffstat (limited to 'debianutils')
| -rw-r--r-- | debianutils/run_parts.c | 107 |
1 files changed, 99 insertions, 8 deletions
diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c index f2d90b64d..448fe80c1 100644 --- a/debianutils/run_parts.c +++ b/debianutils/run_parts.c @@ -37,17 +37,108 @@ #include "busybox.h" #include <getopt.h> -#include <stdlib.h> - static const struct option runparts_long_options[] = { - { "test", 0, NULL, 't' }, - { "umask", 1, NULL, 'u' }, - { "arg", 1, NULL, 'a' }, - { 0, 0, 0, 0 } + { "test", 0, NULL, 't' }, + { "umask", 1, NULL, 'u' }, + { "arg", 1, NULL, 'a' }, + { 0, 0, 0, 0 } }; -extern char **environ; +/* 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) +{ + const char *c = d->d_name; + + while (*c) { + if (!isalnum(*c) && (*c != '_') && (*c != '-')) { + return 0; + } + ++c; + } + return 1; +} + +/* test mode = 1 is the same as official run_parts + * test_mode = 2 means to fail silently on missing directories + */ +static int run_parts(char **args, const unsigned char test_mode) +{ + struct dirent **namelist = 0; + struct stat st; + char *filename; + char *arg0 = args[0]; + int entries; + int i; + int exitstatus = 0; + +#if __GNUC__ + /* Avoid longjmp clobbering */ + (void) &i; + (void) &exitstatus; +#endif + /* scandir() isn't POSIX, but it makes things easy. */ + entries = scandir(arg0, &namelist, valid_name, alphasort); + + if (entries == -1) { + if (test_mode & 2) { + return(2); + } + bb_perror_msg_and_die("cannot open '%s'", arg0); + } + + for (i = 0; i < entries; i++) { + filename = concat_path_file(arg0, namelist[i]->d_name); + + xstat(filename, &st); + if (S_ISREG(st.st_mode) && !access(filename, X_OK)) { + if (test_mode) { + puts(filename); + } else { + /* exec_errno is common vfork variable */ + volatile int exec_errno = 0; + int result; + int pid; + + if ((pid = vfork()) < 0) { + bb_perror_msg_and_die("failed to fork"); + } else if (!pid) { + args[0] = filename; + execve(filename, args, environ); + exec_errno = errno; + _exit(1); + } + + waitpid(pid, &result, 0); + if (exec_errno) { + errno = exec_errno; + bb_perror_msg("failed to exec %s", filename); + exitstatus = 1; + } + if (WIFEXITED(result) && WEXITSTATUS(result)) { + bb_perror_msg("%s exited with return code %d", filename, WEXITSTATUS(result)); + exitstatus = 1; + } else if (WIFSIGNALED(result)) { + bb_perror_msg("%s exited because of uncaught signal %d", filename, WTERMSIG(result)); + exitstatus = 1; + } + } + } else if (!S_ISDIR(st.st_mode)) { + bb_error_msg("component %s is not an executable plain file", filename); + exitstatus = 1; + } + + free(namelist[i]); + free(filename); + } + free(namelist); + + return exitstatus; +} + /* run_parts_main */ /* Process options */ @@ -96,5 +187,5 @@ int run_parts_main(int argc, char **argv) args[0] = argv[optind]; args[argcount] = 0; - return(run_parts(args, test_mode, environ)); + return run_parts(args, test_mode); } |