15057632786

Committed 15 May 2025 09:01PM UTC coverage: 72.267% (+0.02%) from 72.244%

Build # 15057632786

Build Type

push

github

Committed by

bluca

Commit Message

man: document how to hook stuff into system wakeup

Fixes: #6364

Run Details

298523 of 413084 relevant lines covered (72.27%)

738132.88 hits per line

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90.59

/src/modules-load/modules-load.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <getopt.h>
#include <sys/stat.h>

#include "alloc-util.h"
#include "build.h"
#include "conf-files.h"
#include "constants.h"
#include "errno-util.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 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 = strv_split_and_extend(&arg_proc_cmdline_modules, value, ",", /* filter_duplicates = */ true);
                if (r < 0)
                        return log_error_errno(r, "Failed to parse modules_load= kernel command line option: %m");
        }

        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_(sym_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");

        r = module_setup_context(&ctx);
        if (r < 0)
                return log_error_errno(r, "Failed to initialize libkmod context: %m");

        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);

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <getopt.h>
4	#include <sys/stat.h>
5
6	#include "alloc-util.h"
7	#include "build.h"
8	#include "conf-files.h"
9	#include "constants.h"
10	#include "errno-util.h"
11	#include "fd-util.h"
12	#include "fileio.h"
13	#include "log.h"
14	#include "main-func.h"
15	#include "module-util.h"
16	#include "pretty-print.h"
17	#include "proc-cmdline.h"
18	#include "string-util.h"
19	#include "strv.h"
20
21	static char **arg_proc_cmdline_modules = NULL;
22	static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d");
23
24	STATIC_DESTRUCTOR_REGISTER(arg_proc_cmdline_modules, strv_freep);	69✔
25
26	static int parse_proc_cmdline_item(const char key, const char value, void *data) {	2,867✔
27	int r;	2,867✔
28
29	if (proc_cmdline_key_streq(key, "modules_load")) {	2,867✔
30
31	if (proc_cmdline_value_missing(key, value))	4✔
32	return 0;
33
34	r = strv_split_and_extend(&arg_proc_cmdline_modules, value, ",", /* filter_duplicates = */ true);	4✔
35	if (r < 0)	4✔
36	return log_error_errno(r, "Failed to parse modules_load= kernel command line option: %m");	×
37	}
38
39	return 0;
40	}
41
42	static int apply_file(struct kmod_ctx ctx, const char path, bool ignore_enoent) {	68✔
43	_cleanup_fclose_ FILE *f = NULL;	68✔
44	_cleanup_free_ char *pp = NULL;	68✔
45	int r;	68✔
46
47	assert(ctx);	68✔
48	assert(path);	68✔
49
50	r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f, &pp);	68✔
51	if (r < 0) {	68✔
52	if (ignore_enoent && r == -ENOENT)	1✔
53	return 0;
54
55	return log_error_errno(r, "Failed to open %s: %m", path);	1✔
56	}
57
58	log_debug("apply: %s", pp);	67✔
59	for (;;) {	150✔
60	_cleanup_free_ char *line = NULL;	83✔
61	int k;	150✔
62
63	k = read_stripped_line(f, LONG_LINE_MAX, &line);	150✔
64	if (k < 0)	150✔
65	return log_error_errno(k, "Failed to read file '%s': %m", pp);	×
66	if (k == 0)	150✔
67	break;
68
69	if (isempty(line))	83✔
70	continue;	2✔
71	if (strchr(COMMENTS, *line))	81✔
72	continue;	65✔
73
74	k = module_load_and_warn(ctx, line, true);	16✔
75	if (k == -ENOENT)	16✔
76	continue;	7✔
77	RET_GATHER(r, k);	9✔
78	}
79
80	return r;	67✔
81	}
82
83	static int help(void) {	1✔
84	_cleanup_free_ char *link = NULL;	1✔
85	int r;	1✔
86
87	r = terminal_urlify_man("systemd-modules-load.service", "8", &link);	1✔
88	if (r < 0)	1✔
89	return log_oom();	×
90
91	printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"	1✔
92	"Loads statically configured kernel modules.\n\n"
93	" -h --help Show this help\n"
94	" --version Show package version\n"
95	"\nSee the %s for details.\n",
96	program_invocation_short_name,
97	link);
98
99	return 0;
100	}
101
102	static int parse_argv(int argc, char *argv[]) {	69✔
103	enum {	69✔
104	ARG_VERSION = 0x100,
105	};
106
107	static const struct option options[] = {	69✔
108	{ "help", no_argument, NULL, 'h' },
109	{ "version", no_argument, NULL, ARG_VERSION },
110	{}
111	};
112
113	int c;	69✔
114
115	assert(argc >= 0);	69✔
116	assert(argv);	69✔
117
118	while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)	69✔
119	switch (c) {	3✔
120
121	case 'h':	1✔
122	return help();	1✔
123
124	case ARG_VERSION:	1✔
125	return version();	1✔
126
127	case '?':
128	return -EINVAL;
129
130	default:	×
131	assert_not_reached();	×
132	}
133
134	return 1;
135	}
136
137	static int run(int argc, char *argv[]) {	69✔
138	_cleanup_(sym_kmod_unrefp) struct kmod_ctx *ctx = NULL;	69✔
139	int r, k;	69✔
140
141	r = parse_argv(argc, argv);	69✔
142	if (r <= 0)	69✔
143	return r;
144
145	log_setup();	66✔
146
147	umask(0022);	66✔
148
149	r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX);	66✔
150	if (r < 0)	66✔
151	log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");	×
152
153	r = module_setup_context(&ctx);	66✔
154	if (r < 0)	66✔
155	return log_error_errno(r, "Failed to initialize libkmod context: %m");	×
156
157	r = 0;	66✔
158
159	if (argc > optind) {	66✔
160	for (int i = optind; i < argc; i++)	4✔
161	RET_GATHER(r, apply_file(ctx, argv[i], false));	2✔
162
163	} else {
164	_cleanup_strv_free_ char **files = NULL;	64✔
165
166	STRV_FOREACH(i, arg_proc_cmdline_modules) {	66✔
167	k = module_load_and_warn(ctx, *i, true);	2✔
168	if (k == -ENOENT)	2✔
169	continue;	1✔
170	RET_GATHER(r, k);	1✔
171	}
172
173	k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs);	64✔
174	if (k < 0)	64✔
175	return log_error_errno(k, "Failed to enumerate modules-load.d files: %m");	×
176
177	STRV_FOREACH(fn, files)	130✔
178	RET_GATHER(r, apply_file(ctx, *fn, true));	66✔
179	}
180
181	return r;
182	}
183
184	DEFINE_MAIN_FUNCTION(run);	69✔

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