diff options
Diffstat (limited to 'src/modules-load/modules-load.c')
| -rw-r--r-- | src/modules-load/modules-load.c | 181 |
1 files changed, 124 insertions, 57 deletions
diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c index 936aaed8e..88b126149 100644 --- a/src/modules-load/modules-load.c +++ b/src/modules-load/modules-load.c @@ -26,6 +26,7 @@ #include <sys/stat.h> #include <limits.h> #include <dirent.h> +#include <getopt.h> #include <libkmod.h> #include "log.h" @@ -36,6 +37,16 @@ static char **arg_proc_cmdline_modules = NULL; +static const char conf_file_dirs[] = + "/etc/modules-load.d\0" + "/run/modules-load.d\0" + "/usr/local/lib/modules-load.d\0" + "/usr/lib/modules-load.d\0" +#ifdef HAVE_SPLIT_USR + "/lib/modules-load.d\0" +#endif + ; + #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wformat-nonliteral" static void systemd_kmod_log(void *data, int priority, const char *file, int line, @@ -46,14 +57,14 @@ static void systemd_kmod_log(void *data, int priority, const char *file, int lin #pragma GCC diagnostic pop static int add_modules(const char *p) { - char **t, **k; + char **t; + _cleanup_strv_free_ char **k = NULL; k = strv_split(p, ","); if (!k) return log_oom(); t = strv_merge(arg_proc_cmdline_modules, k); - strv_free(k); if (!t) return log_oom(); @@ -162,15 +173,98 @@ static int load_module(struct kmod_ctx *ctx, const char *m) { return r; } +static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { + _cleanup_fclose_ FILE *f = NULL; + int r; + + assert(ctx); + assert(path); + + r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f); + if (r < 0) { + if (ignore_enoent && r == -ENOENT) + return 0; + + log_error("Failed to open %s, ignoring: %s", path, strerror(-r)); + return r; + } + + log_debug("apply: %s\n", path); + for (;;) { + char line[LINE_MAX], *l; + int k; + + if (!fgets(line, sizeof(line), f)) { + if (feof(f)) + break; + + log_error("Failed to read file '%s', ignoring: %m", path); + return -errno; + } + + l = strstrip(line); + if (!*l) + continue; + if (strchr(COMMENTS, *l)) + continue; + + k = load_module(ctx, l); + if (k < 0 && r == 0) + r = k; + } + + return r; +} + +static int help(void) { + + printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" + "Loads statically configured kernel modules.\n\n" + " -h --help Show this help\n", + program_invocation_short_name); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { NULL, 0, NULL, 0 } + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { + + switch (c) { + + case 'h': + help(); + return 0; + + case '?': + return -EINVAL; + + default: + log_error("Unknown option code %c", c); + return -EINVAL; + } + } + + return 1; +} + int main(int argc, char *argv[]) { - int r = EXIT_FAILURE, k; - char **files = NULL, **fn, **i; + int r, k; struct kmod_ctx *ctx; - if (argc > 1) { - log_error("This program takes no argument."); - return EXIT_FAILURE; - } + r = parse_argv(argc, argv); + if (r <= 0) + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; log_set_target(LOG_TARGET_AUTO); log_parse_environment(); @@ -190,70 +284,43 @@ int main(int argc, char *argv[]) { kmod_load_resources(ctx); kmod_set_log_fn(ctx, systemd_kmod_log, NULL); - r = EXIT_SUCCESS; + r = 0; - STRV_FOREACH(i, arg_proc_cmdline_modules) { - k = load_module(ctx, *i); - if (k < 0) - r = EXIT_FAILURE; - } - - k = conf_files_list(&files, ".conf", NULL, - "/etc/modules-load.d", - "/run/modules-load.d", - "/usr/local/lib/modules-load.d", - "/usr/lib/modules-load.d", -#ifdef HAVE_SPLIT_USR - "/lib/modules-load.d", -#endif - NULL); - if (k < 0) { - log_error("Failed to enumerate modules-load.d files: %s", strerror(-k)); - r = EXIT_FAILURE; - goto finish; - } - - STRV_FOREACH(fn, files) { - FILE *f; + if (argc > optind) { + int i; - f = fopen(*fn, "re"); - if (!f) { - if (errno == ENOENT) - continue; - - log_error("Failed to open %s: %m", *fn); - r = EXIT_FAILURE; - continue; + for (i = optind; i < argc; i++) { + k = apply_file(ctx, argv[i], false); + if (k < 0 && r == 0) + r = k; } - log_debug("apply: %s\n", *fn); - for (;;) { - char line[LINE_MAX], *l; - - if (!fgets(line, sizeof(line), f)) - break; + } else { + _cleanup_free_ char **files = NULL; + char **fn, **i; - l = strstrip(line); - if (*l == '#' || *l == 0) - continue; - - k = load_module(ctx, l); + STRV_FOREACH(i, arg_proc_cmdline_modules) { + k = load_module(ctx, *i); if (k < 0) r = EXIT_FAILURE; } - if (ferror(f)) { - log_error("Failed to read from file: %m"); - r = EXIT_FAILURE; + r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs); + if (r < 0) { + log_error("Failed to enumerate modules-load.d files: %s", strerror(-r)); + goto finish; } - fclose(f); + STRV_FOREACH(fn, files) { + k = apply_file(ctx, *fn, true); + if (k < 0 && r == 0) + r = k; + } } finish: - strv_free(files); kmod_unref(ctx); strv_free(arg_proc_cmdline_modules); - return r; + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; } |