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Commit | Line | Data |
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a032b68d | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
663996b3 | 2 | |
663996b3 | 3 | #include <errno.h> |
6300502b MP |
4 | #include <getopt.h> |
5 | #include <limits.h> | |
663996b3 | 6 | #include <sys/stat.h> |
663996b3 | 7 | |
6300502b | 8 | #include "conf-files.h" |
db2df898 MP |
9 | #include "def.h" |
10 | #include "fd-util.h" | |
11 | #include "fileio.h" | |
663996b3 | 12 | #include "log.h" |
6e866b33 | 13 | #include "main-func.h" |
52ad194e | 14 | #include "module-util.h" |
6e866b33 | 15 | #include "pretty-print.h" |
db2df898 MP |
16 | #include "proc-cmdline.h" |
17 | #include "string-util.h" | |
663996b3 | 18 | #include "strv.h" |
6300502b | 19 | #include "util.h" |
663996b3 MS |
20 | |
21 | static char **arg_proc_cmdline_modules = NULL; | |
db2df898 | 22 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d"); |
663996b3 | 23 | |
6e866b33 MB |
24 | STATIC_DESTRUCTOR_REGISTER(arg_proc_cmdline_modules, strv_freep); |
25 | ||
663996b3 | 26 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
60f067b4 JS |
27 | const char *fn, const char *format, va_list args) { |
28 | ||
29 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
f47781d8 | 30 | log_internalv(priority, 0, file, line, fn, format, args); |
60f067b4 | 31 | REENABLE_WARNING; |
663996b3 | 32 | } |
663996b3 MS |
33 | |
34 | static int add_modules(const char *p) { | |
663996b3 MS |
35 | _cleanup_strv_free_ char **k = NULL; |
36 | ||
37 | k = strv_split(p, ","); | |
38 | if (!k) | |
39 | return log_oom(); | |
40 | ||
6300502b | 41 | if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0) |
663996b3 MS |
42 | return log_oom(); |
43 | ||
663996b3 MS |
44 | return 0; |
45 | } | |
46 | ||
8a584da2 | 47 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
663996b3 | 48 | int r; |
663996b3 | 49 | |
2897b343 MP |
50 | if (proc_cmdline_key_streq(key, "modules_load")) { |
51 | ||
52 | if (proc_cmdline_value_missing(key, value)) | |
53 | return 0; | |
54 | ||
60f067b4 JS |
55 | r = add_modules(value); |
56 | if (r < 0) | |
57 | return r; | |
663996b3 MS |
58 | } |
59 | ||
60 | return 0; | |
61 | } | |
62 | ||
663996b3 MS |
63 | static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { |
64 | _cleanup_fclose_ FILE *f = NULL; | |
8b3d4ff0 | 65 | _cleanup_free_ char *pp = NULL; |
663996b3 MS |
66 | int r; |
67 | ||
68 | assert(ctx); | |
69 | assert(path); | |
70 | ||
8b3d4ff0 | 71 | r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f, &pp); |
663996b3 MS |
72 | if (r < 0) { |
73 | if (ignore_enoent && r == -ENOENT) | |
74 | return 0; | |
75 | ||
6e866b33 | 76 | return log_error_errno(r, "Failed to open %s: %m", path); |
663996b3 MS |
77 | } |
78 | ||
8b3d4ff0 | 79 | log_debug("apply: %s", pp); |
663996b3 | 80 | for (;;) { |
6e866b33 MB |
81 | _cleanup_free_ char *line = NULL; |
82 | char *l; | |
663996b3 MS |
83 | int k; |
84 | ||
6e866b33 MB |
85 | k = read_line(f, LONG_LINE_MAX, &line); |
86 | if (k < 0) | |
8b3d4ff0 | 87 | return log_error_errno(k, "Failed to read file '%s': %m", pp); |
6e866b33 MB |
88 | if (k == 0) |
89 | break; | |
663996b3 MS |
90 | |
91 | l = strstrip(line); | |
6e866b33 | 92 | if (isempty(l)) |
663996b3 | 93 | continue; |
6e866b33 | 94 | if (strchr(COMMENTS, *l)) |
663996b3 MS |
95 | continue; |
96 | ||
6e866b33 | 97 | k = module_load_and_warn(ctx, l, true); |
e1f67bc7 MB |
98 | if (k == -ENOENT) |
99 | continue; | |
6e866b33 | 100 | if (k < 0 && r >= 0) |
663996b3 MS |
101 | r = k; |
102 | } | |
103 | ||
104 | return r; | |
105 | } | |
106 | ||
6e866b33 MB |
107 | static int help(void) { |
108 | _cleanup_free_ char *link = NULL; | |
109 | int r; | |
110 | ||
111 | r = terminal_urlify_man("systemd-modules-load.service", "8", &link); | |
112 | if (r < 0) | |
113 | return log_oom(); | |
114 | ||
663996b3 MS |
115 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
116 | "Loads statically configured kernel modules.\n\n" | |
60f067b4 | 117 | " -h --help Show this help\n" |
6e866b33 | 118 | " --version Show package version\n" |
3a6ce677 BR |
119 | "\nSee the %s for details.\n", |
120 | program_invocation_short_name, | |
121 | link); | |
6e866b33 MB |
122 | |
123 | return 0; | |
663996b3 MS |
124 | } |
125 | ||
126 | static int parse_argv(int argc, char *argv[]) { | |
60f067b4 JS |
127 | enum { |
128 | ARG_VERSION = 0x100, | |
129 | }; | |
130 | ||
663996b3 MS |
131 | static const struct option options[] = { |
132 | { "help", no_argument, NULL, 'h' }, | |
60f067b4 JS |
133 | { "version", no_argument, NULL, ARG_VERSION }, |
134 | {} | |
663996b3 MS |
135 | }; |
136 | ||
137 | int c; | |
138 | ||
139 | assert(argc >= 0); | |
140 | assert(argv); | |
141 | ||
5eef597e | 142 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
663996b3 MS |
143 | switch (c) { |
144 | ||
145 | case 'h': | |
6e866b33 | 146 | return help(); |
60f067b4 JS |
147 | |
148 | case ARG_VERSION: | |
6300502b | 149 | return version(); |
663996b3 MS |
150 | |
151 | case '?': | |
152 | return -EINVAL; | |
153 | ||
154 | default: | |
60f067b4 | 155 | assert_not_reached("Unhandled option"); |
663996b3 | 156 | } |
663996b3 MS |
157 | |
158 | return 1; | |
159 | } | |
160 | ||
6e866b33 | 161 | static int run(int argc, char *argv[]) { |
52ad194e | 162 | _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL; |
6e866b33 | 163 | int r, k; |
663996b3 MS |
164 | |
165 | r = parse_argv(argc, argv); | |
166 | if (r <= 0) | |
6e866b33 | 167 | return r; |
663996b3 | 168 | |
3a6ce677 | 169 | log_setup(); |
663996b3 MS |
170 | |
171 | umask(0022); | |
172 | ||
2897b343 | 173 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
f47781d8 MP |
174 | if (r < 0) |
175 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); | |
663996b3 MS |
176 | |
177 | ctx = kmod_new(NULL, NULL); | |
178 | if (!ctx) { | |
179 | log_error("Failed to allocate memory for kmod."); | |
6e866b33 | 180 | return -ENOMEM; |
663996b3 MS |
181 | } |
182 | ||
183 | kmod_load_resources(ctx); | |
184 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); | |
185 | ||
186 | r = 0; | |
187 | ||
188 | if (argc > optind) { | |
48c4d287 | 189 | for (int i = optind; i < argc; i++) { |
663996b3 MS |
190 | k = apply_file(ctx, argv[i], false); |
191 | if (k < 0 && r == 0) | |
192 | r = k; | |
193 | } | |
194 | ||
195 | } else { | |
e3bff60a | 196 | _cleanup_strv_free_ char **files = NULL; |
663996b3 MS |
197 | char **fn, **i; |
198 | ||
199 | STRV_FOREACH(i, arg_proc_cmdline_modules) { | |
6e866b33 | 200 | k = module_load_and_warn(ctx, *i, true); |
e1f67bc7 MB |
201 | if (k == -ENOENT) |
202 | continue; | |
60f067b4 JS |
203 | if (k < 0 && r == 0) |
204 | r = k; | |
663996b3 MS |
205 | } |
206 | ||
f5e65279 | 207 | k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs); |
60f067b4 | 208 | if (k < 0) { |
f47781d8 | 209 | log_error_errno(k, "Failed to enumerate modules-load.d files: %m"); |
60f067b4 JS |
210 | if (r == 0) |
211 | r = k; | |
6e866b33 | 212 | return r; |
663996b3 MS |
213 | } |
214 | ||
215 | STRV_FOREACH(fn, files) { | |
216 | k = apply_file(ctx, *fn, true); | |
217 | if (k < 0 && r == 0) | |
218 | r = k; | |
219 | } | |
220 | } | |
221 | ||
6e866b33 | 222 | return r; |
663996b3 | 223 | } |
6e866b33 MB |
224 | |
225 | DEFINE_MAIN_FUNCTION(run); |