Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 210 insertions, 0 deletions

diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c
new file mode 100644
index 0000000..efca237
--- /dev/null
+++ b/src/modules-load/modules-load.c
@@ -0,0 +1,210 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <getopt.h>
+#include <limits.h>
+#include <sys/stat.h>
+
+#include "build.h"
+#include "conf-files.h"
+#include "constants.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "log.h"
+#include "main-func.h"
+#include "module-util.h"
+#include "pretty-print.h"
+#include "proc-cmdline.h"
+#include "string-util.h"
+#include "strv.h"
+
+static char **arg_proc_cmdline_modules = NULL;
+static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d");
+
+STATIC_DESTRUCTOR_REGISTER(arg_proc_cmdline_modules, strv_freep);
+
+static void systemd_kmod_log(void *data, int priority, const char *file, int line,
+                             const char *fn, const char *format, va_list args) {
+
+        DISABLE_WARNING_FORMAT_NONLITERAL;
+        log_internalv(priority, 0, file, line, fn, format, args);
+        REENABLE_WARNING;
+}
+
+static int add_modules(const char *p) {
+        _cleanup_strv_free_ char **k = NULL;
+
+        k = strv_split(p, ",");
+        if (!k)
+                return log_oom();
+
+        if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0)
+                return log_oom();
+
+        return 0;
+}
+
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+        int r;
+
+        if (proc_cmdline_key_streq(key, "modules_load")) {
+
+                if (proc_cmdline_value_missing(key, value))
+                        return 0;
+
+                r = add_modules(value);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_free_ char *pp = NULL;
+        int r;
+
+        assert(ctx);
+        assert(path);
+
+        r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f, &pp);
+        if (r < 0) {
+                if (ignore_enoent && r == -ENOENT)
+                        return 0;
+
+                return log_error_errno(r, "Failed to open %s: %m", path);
+        }
+
+        log_debug("apply: %s", pp);
+        for (;;) {
+                _cleanup_free_ char *line = NULL;
+                int k;
+
+                k = read_stripped_line(f, LONG_LINE_MAX, &line);
+                if (k < 0)
+                        return log_error_errno(k, "Failed to read file '%s': %m", pp);
+                if (k == 0)
+                        break;
+
+                if (isempty(line))
+                        continue;
+                if (strchr(COMMENTS, *line))
+                        continue;
+
+                k = module_load_and_warn(ctx, line, true);
+                if (k == -ENOENT)
+                        continue;
+                RET_GATHER(r, k);
+        }
+
+        return r;
+}
+
+static int help(void) {
+        _cleanup_free_ char *link = NULL;
+        int r;
+
+        r = terminal_urlify_man("systemd-modules-load.service", "8", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
+               "Loads statically configured kernel modules.\n\n"
+               "  -h --help             Show this help\n"
+               "     --version          Show package version\n"
+               "\nSee the %s for details.\n",
+               program_invocation_short_name,
+               link);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+        enum {
+                ARG_VERSION = 0x100,
+        };
+
+        static const struct option options[] = {
+                { "help",      no_argument,       NULL, 'h'           },
+                { "version",   no_argument,       NULL, ARG_VERSION   },
+                {}
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+                switch (c) {
+
+                case 'h':
+                        return help();
+
+                case ARG_VERSION:
+                        return version();
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached();
+                }
+
+        return 1;
+}
+
+static int run(int argc, char *argv[]) {
+        _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL;
+        int r, k;
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        log_setup();
+
+        umask(0022);
+
+        r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);
+        if (r < 0)
+                log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
+
+        ctx = kmod_new(NULL, NULL);
+        if (!ctx) {
+                log_error("Failed to allocate memory for kmod.");
+                return -ENOMEM;
+        }
+
+        kmod_load_resources(ctx);
+        kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
+
+        r = 0;
+
+        if (argc > optind) {
+                for (int i = optind; i < argc; i++)
+                        RET_GATHER(r, apply_file(ctx, argv[i], false));
+
+        } else {
+                _cleanup_strv_free_ char **files = NULL;
+
+                STRV_FOREACH(i, arg_proc_cmdline_modules) {
+                        k = module_load_and_warn(ctx, *i, true);
+                        if (k == -ENOENT)
+                                continue;
+                        RET_GATHER(r, k);
+                }
+
+                k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs);
+                if (k < 0)
+                        return log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
+
+                STRV_FOREACH(fn, files)
+                        RET_GATHER(r, apply_file(ctx, *fn, true));
+        }
+
+        return r;
+}
+
+DEFINE_MAIN_FUNCTION(run);