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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
b2423f1f | 2 | |
b2423f1f | 3 | #include <errno.h> |
3f6fd1ba | 4 | #include <getopt.h> |
07630cea | 5 | #include <libkmod.h> |
3f6fd1ba | 6 | #include <limits.h> |
b2423f1f LP |
7 | #include <string.h> |
8 | #include <sys/stat.h> | |
b2423f1f | 9 | |
3f6fd1ba | 10 | #include "conf-files.h" |
a0f29c76 | 11 | #include "def.h" |
3ffd4af2 | 12 | #include "fd-util.h" |
0d39fa9c | 13 | #include "fileio.h" |
b2423f1f | 14 | #include "log.h" |
232ac0d6 | 15 | #include "module-util.h" |
4e731273 | 16 | #include "proc-cmdline.h" |
07630cea | 17 | #include "string-util.h" |
b2423f1f | 18 | #include "strv.h" |
3f6fd1ba | 19 | #include "util.h" |
03658d4f LP |
20 | |
21 | static char **arg_proc_cmdline_modules = NULL; | |
b2423f1f | 22 | |
75eb6154 | 23 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d"); |
fabe5c0e | 24 | |
83684a35 | 25 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
f168c273 | 26 | const char *fn, const char *format, va_list args) { |
bcfce235 LP |
27 | |
28 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
79008bdd | 29 | log_internalv(priority, 0, file, line, fn, format, args); |
bcfce235 | 30 | REENABLE_WARNING; |
83684a35 TG |
31 | } |
32 | ||
03658d4f | 33 | static int add_modules(const char *p) { |
fabe5c0e | 34 | _cleanup_strv_free_ char **k = NULL; |
03658d4f LP |
35 | |
36 | k = strv_split(p, ","); | |
0d0f0c50 SL |
37 | if (!k) |
38 | return log_oom(); | |
03658d4f | 39 | |
e287086b | 40 | if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0) |
0d0f0c50 | 41 | return log_oom(); |
03658d4f | 42 | |
03658d4f LP |
43 | return 0; |
44 | } | |
45 | ||
96287a49 | 46 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 47 | int r; |
03658d4f | 48 | |
1d84ad94 LP |
49 | if (proc_cmdline_key_streq(key, "modules_load")) { |
50 | ||
51 | if (proc_cmdline_value_missing(key, value)) | |
52 | return 0; | |
53 | ||
059cb385 | 54 | r = add_modules(value); |
141a79f4 ZJS |
55 | if (r < 0) |
56 | return r; | |
03658d4f LP |
57 | } |
58 | ||
c007bb1b | 59 | return 0; |
03658d4f LP |
60 | } |
61 | ||
fabe5c0e LP |
62 | static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { |
63 | _cleanup_fclose_ FILE *f = NULL; | |
64 | int r; | |
65 | ||
66 | assert(ctx); | |
67 | assert(path); | |
68 | ||
4cf7ea55 | 69 | r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f); |
fabe5c0e LP |
70 | if (r < 0) { |
71 | if (ignore_enoent && r == -ENOENT) | |
72 | return 0; | |
73 | ||
8d3d7072 | 74 | return log_error_errno(r, "Failed to open %s, ignoring: %m", path); |
fabe5c0e LP |
75 | } |
76 | ||
9f6445e3 | 77 | log_debug("apply: %s", path); |
fabe5c0e LP |
78 | for (;;) { |
79 | char line[LINE_MAX], *l; | |
80 | int k; | |
81 | ||
82 | if (!fgets(line, sizeof(line), f)) { | |
83 | if (feof(f)) | |
84 | break; | |
85 | ||
e1427b13 | 86 | return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path); |
fabe5c0e LP |
87 | } |
88 | ||
89 | l = strstrip(line); | |
90 | if (!*l) | |
91 | continue; | |
d3b6d0c2 | 92 | if (strchr(COMMENTS "\n", *l)) |
fabe5c0e LP |
93 | continue; |
94 | ||
3cb9b42a | 95 | k = module_load_and_warn(ctx, l); |
fabe5c0e LP |
96 | if (k < 0 && r == 0) |
97 | r = k; | |
98 | } | |
99 | ||
100 | return r; | |
101 | } | |
102 | ||
601185b4 | 103 | static void help(void) { |
fabe5c0e LP |
104 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
105 | "Loads statically configured kernel modules.\n\n" | |
eb9da376 LP |
106 | " -h --help Show this help\n" |
107 | " --version Show package version\n", | |
fabe5c0e | 108 | program_invocation_short_name); |
fabe5c0e LP |
109 | } |
110 | ||
111 | static int parse_argv(int argc, char *argv[]) { | |
112 | ||
eb9da376 LP |
113 | enum { |
114 | ARG_VERSION = 0x100, | |
115 | }; | |
116 | ||
fabe5c0e LP |
117 | static const struct option options[] = { |
118 | { "help", no_argument, NULL, 'h' }, | |
eb9da376 LP |
119 | { "version", no_argument, NULL, ARG_VERSION }, |
120 | {} | |
fabe5c0e LP |
121 | }; |
122 | ||
123 | int c; | |
124 | ||
125 | assert(argc >= 0); | |
126 | assert(argv); | |
127 | ||
601185b4 | 128 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
fabe5c0e LP |
129 | |
130 | switch (c) { | |
131 | ||
132 | case 'h': | |
601185b4 ZJS |
133 | help(); |
134 | return 0; | |
eb9da376 LP |
135 | |
136 | case ARG_VERSION: | |
3f6fd1ba | 137 | return version(); |
fabe5c0e LP |
138 | |
139 | case '?': | |
140 | return -EINVAL; | |
141 | ||
142 | default: | |
eb9da376 | 143 | assert_not_reached("Unhandled option"); |
fabe5c0e | 144 | } |
fabe5c0e LP |
145 | |
146 | return 1; | |
147 | } | |
148 | ||
b2423f1f | 149 | int main(int argc, char *argv[]) { |
fabe5c0e | 150 | int r, k; |
232ac0d6 | 151 | _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL; |
b2423f1f | 152 | |
fabe5c0e LP |
153 | r = parse_argv(argc, argv); |
154 | if (r <= 0) | |
155 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
b2423f1f | 156 | |
4cfa2c99 | 157 | log_set_target(LOG_TARGET_AUTO); |
b2423f1f LP |
158 | log_parse_environment(); |
159 | log_open(); | |
160 | ||
4c12626c LP |
161 | umask(0022); |
162 | ||
1d84ad94 | 163 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
b5884878 | 164 | if (r < 0) |
da927ba9 | 165 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
03658d4f | 166 | |
4e2075ce LP |
167 | ctx = kmod_new(NULL, NULL); |
168 | if (!ctx) { | |
83684a35 | 169 | log_error("Failed to allocate memory for kmod."); |
b2423f1f LP |
170 | goto finish; |
171 | } | |
172 | ||
83684a35 | 173 | kmod_load_resources(ctx); |
83684a35 | 174 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
b2423f1f | 175 | |
fabe5c0e | 176 | r = 0; |
03658d4f | 177 | |
fabe5c0e LP |
178 | if (argc > optind) { |
179 | int i; | |
b2423f1f | 180 | |
fabe5c0e LP |
181 | for (i = optind; i < argc; i++) { |
182 | k = apply_file(ctx, argv[i], false); | |
183 | if (k < 0 && r == 0) | |
184 | r = k; | |
b2423f1f LP |
185 | } |
186 | ||
fabe5c0e | 187 | } else { |
4df32778 | 188 | _cleanup_strv_free_ char **files = NULL; |
fabe5c0e | 189 | char **fn, **i; |
b2423f1f | 190 | |
fabe5c0e | 191 | STRV_FOREACH(i, arg_proc_cmdline_modules) { |
3cb9b42a | 192 | k = module_load_and_warn(ctx, *i); |
b857193b LP |
193 | if (k < 0 && r == 0) |
194 | r = k; | |
b2423f1f LP |
195 | } |
196 | ||
b5084605 | 197 | k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs); |
4b462d1a | 198 | if (k < 0) { |
da927ba9 | 199 | log_error_errno(k, "Failed to enumerate modules-load.d files: %m"); |
4b462d1a LP |
200 | if (r == 0) |
201 | r = k; | |
fabe5c0e | 202 | goto finish; |
b2423f1f LP |
203 | } |
204 | ||
fabe5c0e LP |
205 | STRV_FOREACH(fn, files) { |
206 | k = apply_file(ctx, *fn, true); | |
207 | if (k < 0 && r == 0) | |
208 | r = k; | |
209 | } | |
b2423f1f LP |
210 | } |
211 | ||
b2423f1f | 212 | finish: |
03658d4f | 213 | strv_free(arg_proc_cmdline_modules); |
b2423f1f | 214 | |
fabe5c0e | 215 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
b2423f1f | 216 | } |