14895667988

Committed 07 May 2025 08:57PM UTC coverage: 72.225% (-0.007%) from 72.232%

Build # 14895667988

Build Type

push

github

Committed by

yuwata

Commit Message

network: log_link_message_debug_errno() automatically append %m if necessary

Follow-up for d28746ef5.
Fixes CID#1609753.

Coverage Stats

0 of 1 new or added line in 1 file covered. (0.0%)

20297 existing lines in 338 files now uncovered.

297407 of 411780 relevant lines covered (72.22%)

695716.85 hits per line

Source File
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90.54

/src/basic/os-util.c

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

#include "alloc-util.h"
#include "chase.h"
#include "dirent-util.h"
#include "env-file.h"
#include "env-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "glyph-util.h"
#include "log.h"
#include "macro.h"
#include "os-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "stat-util.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
#include "utf8.h"
#include "xattr-util.h"

static const char* const image_class_table[_IMAGE_CLASS_MAX] = {
        [IMAGE_MACHINE]  = "machine",
        [IMAGE_PORTABLE] = "portable",
        [IMAGE_SYSEXT]   = "sysext",
        [IMAGE_CONFEXT]  = "confext",
};

DEFINE_STRING_TABLE_LOOKUP(image_class, ImageClass);

/* Helper struct for naming simplicity and reusability */
static const struct {
        const char *release_file_directory;
        const char *release_file_path_prefix;
} image_class_release_info[_IMAGE_CLASS_MAX] = {
        [IMAGE_SYSEXT] = {
                .release_file_directory = "/usr/lib/extension-release.d/",
                .release_file_path_prefix = "/usr/lib/extension-release.d/extension-release.",
        },
        [IMAGE_CONFEXT] = {
                .release_file_directory = "/etc/extension-release.d/",
                .release_file_path_prefix = "/etc/extension-release.d/extension-release.",
        }
};

bool image_name_is_valid(const char *s) {
        if (!filename_is_valid(s))
                return false;

        if (string_has_cc(s, NULL))
                return false;

        if (!utf8_is_valid(s))
                return false;

        /* Temporary files for atomically creating new files */
        if (startswith(s, ".#"))
                return false;

        return true;
}

int path_extract_image_name(const char *path, char **ret) {
        _cleanup_free_ char *fn = NULL;
        int r;

        assert(path);
        assert(ret);

        /* Extract last component from path, without any "/" suffixes. */
        r = path_extract_filename(path, &fn);
        if (r < 0)
                return r;
        if (r != O_DIRECTORY) {
                /* Chop off any image suffixes we recognize (unless we already know this must refer to some dir) */
                char *m = ENDSWITH_SET(fn, ".sysext.raw", ".confext.raw", ".raw");
                if (m)
                        *m = 0;
        }

        /* Truncate the version/counting suffixes */
        fn[strcspn(fn, "_+")] = 0;

        if (!image_name_is_valid(fn))
                return -EINVAL;

        *ret = TAKE_PTR(fn);
        return 0;
}

int path_is_extension_tree(ImageClass image_class, const char *path, const char *extension, bool relax_extension_release_check) {
        int r;

        assert(path);

        /* Does the path exist at all? If not, generate an error immediately. This is useful so that a missing root dir
         * always results in -ENOENT, and we can properly distinguish the case where the whole root doesn't exist from
         * the case where just the os-release file is missing. */
        r = access_nofollow(path, F_OK);
        if (r < 0)
                return r;

        /* We use /usr/lib/extension-release.d/extension-release[.NAME] as flag for something being a system extension,
         * /etc/extension-release.d/extension-release[.NAME] as flag for something being a system configuration, and finally,
         * and {/etc|/usr/lib}/os-release as a flag for something being an OS (when not an extension). */
        r = open_extension_release(path, image_class, extension, relax_extension_release_check, NULL, NULL);
        if (r == -ENOENT) /* We got nothing */
                return 0;
        if (r < 0)
                return r;

        return 1;
}

static int extension_release_strict_xattr_value(int extension_release_fd, const char *extension_release_dir_path, const char *filename) {
        int r;

        assert(extension_release_fd >= 0);
        assert(extension_release_dir_path);
        assert(filename);

        /* No xattr or cannot parse it? Then skip this. */
        r = getxattr_at_bool(extension_release_fd, /* path= */ NULL, "user.extension-release.strict", /* flags= */ 0);
        if (ERRNO_IS_NEG_XATTR_ABSENT(r))
                return log_debug_errno(r, "%s/%s does not have user.extension-release.strict xattr, ignoring.",
                                       extension_release_dir_path, filename);
        if (r < 0)
                return log_debug_errno(r, "%s/%s: Failed to read 'user.extension-release.strict' extended attribute from file, ignoring: %m",
                                       extension_release_dir_path, filename);

        /* Explicitly set to request strict matching? Skip it. */
        if (r > 0) {
                log_debug("%s/%s: 'user.extension-release.strict' attribute is true, ignoring file.",
                          extension_release_dir_path, filename);
                return true;
        }

        log_debug("%s/%s: 'user.extension-release.strict' attribute is false%s",
                  extension_release_dir_path, filename,
                  glyph(GLYPH_ELLIPSIS));

        return false;
}

int open_os_release_at(int rfd, char **ret_path, int *ret_fd) {
        const char *e;
        int r;

        assert(rfd >= 0 || rfd == AT_FDCWD);

        e = secure_getenv("SYSTEMD_OS_RELEASE");
        if (e)
                return chaseat(rfd, e, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);

        FOREACH_STRING(path, "/etc/os-release", "/usr/lib/os-release") {
                r = chaseat(rfd, path, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);
                if (r != -ENOENT)
                        return r;
        }

        return -ENOENT;
}

int open_os_release(const char *root, char **ret_path, int *ret_fd) {
        _cleanup_close_ int rfd = -EBADF, fd = -EBADF;
        _cleanup_free_ char *p = NULL;
        int r;

        rfd = open(empty_to_root(root), O_CLOEXEC | O_DIRECTORY | O_PATH);
        if (rfd < 0)
                return -errno;

        r = open_os_release_at(rfd, ret_path ? &p : NULL, ret_fd ? &fd : NULL);
        if (r < 0)
                return r;

        if (ret_path) {
                r = chaseat_prefix_root(p, root, ret_path);
                if (r < 0)
                        return r;
        }

        if (ret_fd)
                *ret_fd = TAKE_FD(fd);

        return 0;
}

int open_extension_release_at(
                int rfd,
                ImageClass image_class,
                const char *extension,
                bool relax_extension_release_check,
                char **ret_path,
                int *ret_fd) {

        _cleanup_free_ char *dir_path = NULL, *path_found = NULL;
        _cleanup_close_ int fd_found = -EBADF;
        _cleanup_closedir_ DIR *dir = NULL;
        bool found = false;
        const char *p;
        int r;

        assert(rfd >= 0 || rfd == AT_FDCWD);
        assert(!extension || (image_class >= 0 && image_class < _IMAGE_CLASS_MAX));

        if (!extension)
                return open_os_release_at(rfd, ret_path, ret_fd);

        if (!IN_SET(image_class, IMAGE_SYSEXT, IMAGE_CONFEXT))
                return -EINVAL;

        if (!image_name_is_valid(extension))
                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "The extension name %s is invalid.", extension);

        p = strjoina(image_class_release_info[image_class].release_file_path_prefix, extension);
        r = chaseat(rfd, p, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);
        log_full_errno_zerook(LOG_DEBUG, MIN(r, 0), "Checking for %s: %m", p);
        if (r != -ENOENT)
                return r;

        /* Cannot find the expected extension-release file? The image filename might have been mangled on
         * deployment, so fallback to checking for any file in the extension-release.d directory, and return
         * the first one with a user.extension-release xattr instead. The user.extension-release.strict
         * xattr is checked to ensure the author of the image considers it OK if names do not match. */

        p = image_class_release_info[image_class].release_file_directory;
        r = chase_and_opendirat(rfd, p, CHASE_AT_RESOLVE_IN_ROOT, &dir_path, &dir);
        if (r < 0)
                return log_debug_errno(r, "Cannot open %s, ignoring: %m", p);

        FOREACH_DIRENT(de, dir, return -errno) {
                _cleanup_close_ int fd = -EBADF;
                const char *image_name;

                if (!IN_SET(de->d_type, DT_REG, DT_UNKNOWN))
                        continue;

                image_name = startswith(de->d_name, "extension-release.");
                if (!image_name)
                        continue;

                if (!image_name_is_valid(image_name)) {
                        log_debug("%s/%s is not a valid release file name, ignoring.", dir_path, de->d_name);
                        continue;
                }

                /* We already chased the directory, and checked that this is a real file, so we shouldn't
                 * fail to open it. */
                fd = openat(dirfd(dir), de->d_name, O_PATH|O_CLOEXEC|O_NOFOLLOW);
                if (fd < 0)
                        return log_debug_errno(errno, "Failed to open release file %s/%s: %m", dir_path, de->d_name);

                /* Really ensure it is a regular file after we open it. */
                r = fd_verify_regular(fd);
                if (r < 0) {
                        log_debug_errno(r, "%s/%s is not a regular file, ignoring: %m", dir_path, de->d_name);
                        continue;
                }

                if (!relax_extension_release_check) {
                        _cleanup_free_ char *base_extension = NULL;

                        r = path_extract_image_name(extension, &base_extension);
                        if (r < 0) {
                                log_debug_errno(r, "Failed to extract image name from %s, ignoring: %m", extension);
                                continue;
                        }

                        if (!streq(image_name, base_extension) &&
                            extension_release_strict_xattr_value(fd, dir_path, image_name) != 0)
                                continue;
                }

                /* We already found what we were looking for, but there's another candidate? We treat this as
                 * an error, as we want to enforce that there are no ambiguities in case we are in the
                 * fallback path. */
                if (found)
                        return -ENOTUNIQ;

                found = true;

                if (ret_fd)
                        fd_found = TAKE_FD(fd);

                if (ret_path) {
                        path_found = path_join(dir_path, de->d_name);
                        if (!path_found)
                                return -ENOMEM;
                }
        }
        if (!found)
                return -ENOENT;

        if (ret_fd)
                *ret_fd = TAKE_FD(fd_found);
        if (ret_path)
                *ret_path = TAKE_PTR(path_found);

        return 0;
}

int open_extension_release(
                const char *root,
                ImageClass image_class,
                const char *extension,
                bool relax_extension_release_check,
                char **ret_path,
                int *ret_fd) {

        _cleanup_close_ int rfd = -EBADF, fd = -EBADF;
        _cleanup_free_ char *p = NULL;
        int r;

        rfd = open(empty_to_root(root), O_CLOEXEC | O_DIRECTORY | O_PATH);
        if (rfd < 0)
                return -errno;

        r = open_extension_release_at(rfd, image_class, extension, relax_extension_release_check,
                                      ret_path ? &p : NULL, ret_fd ? &fd : NULL);
        if (r < 0)
                return r;

        if (ret_path) {
                r = chaseat_prefix_root(p, root, ret_path);
                if (r < 0)
                        return r;
        }

        if (ret_fd)
                *ret_fd = TAKE_FD(fd);

        return 0;
}

static int parse_extension_release_atv(
                int rfd,
                ImageClass image_class,
                const char *extension,
                bool relax_extension_release_check,
                va_list ap) {

        _cleanup_close_ int fd = -EBADF;
        _cleanup_free_ char *p = NULL;
        int r;

        assert(rfd >= 0 || rfd == AT_FDCWD);

        r = open_extension_release_at(rfd, image_class, extension, relax_extension_release_check, &p, &fd);
        if (r < 0)
                return r;

        return parse_env_file_fdv(fd, p, ap);
}

int parse_extension_release_at_sentinel(
                int rfd,
                ImageClass image_class,
                bool relax_extension_release_check,
                const char *extension,
                ...) {

        va_list ap;
        int r;

        assert(rfd >= 0 || rfd == AT_FDCWD);

        va_start(ap, extension);
        r = parse_extension_release_atv(rfd, image_class, extension, relax_extension_release_check, ap);
        va_end(ap);
        return r;
}

int parse_extension_release_sentinel(
                const char *root,
                ImageClass image_class,
                bool relax_extension_release_check,
                const char *extension,
                ...) {

        _cleanup_close_ int rfd = -EBADF;
        va_list ap;
        int r;

        rfd = open(empty_to_root(root), O_CLOEXEC | O_DIRECTORY | O_PATH);
        if (rfd < 0)
                return -errno;

        va_start(ap, extension);
        r = parse_extension_release_atv(rfd, image_class, extension, relax_extension_release_check, ap);
        va_end(ap);
        return r;
}

int load_os_release_pairs_with_prefix(const char *root, const char *prefix, char ***ret) {
        _cleanup_strv_free_ char **os_release_pairs = NULL, **os_release_pairs_prefixed = NULL;
        int r;

        r = load_os_release_pairs(root, &os_release_pairs);
        if (r < 0)
                return r;

        STRV_FOREACH_PAIR(p, q, os_release_pairs) {
                char *line;

                /* We strictly return only the four main ID fields and ignore the rest */
                if (!STR_IN_SET(*p, "ID", "VERSION_ID", "BUILD_ID", "VARIANT_ID"))
                        continue;

                ascii_strlower(*p);
                line = strjoin(prefix, *p, "=", *q);
                if (!line)
                        return -ENOMEM;
                r = strv_consume(&os_release_pairs_prefixed, line);
                if (r < 0)
                        return r;
        }

        *ret = TAKE_PTR(os_release_pairs_prefixed);

        return 0;
}

int load_extension_release_pairs(const char *root, ImageClass image_class, const char *extension, bool relax_extension_release_check, char ***ret) {
        _cleanup_close_ int fd = -EBADF;
        _cleanup_free_ char *p = NULL;
        int r;

        r = open_extension_release(root, image_class, extension, relax_extension_release_check, &p, &fd);
        if (r < 0)
                return r;

        return load_env_file_pairs_fd(fd, p, ret);
}

int os_release_support_ended(const char *support_end, bool quiet, usec_t *ret_eol) {
        _cleanup_free_ char *_support_end_alloc = NULL;
        int r;

        if (!support_end) {
                /* If the caller has the variably handy, they can pass it in. If not, we'll read it
                 * ourselves. */

                r = parse_os_release(NULL,
                                     "SUPPORT_END", &_support_end_alloc);
                if (r < 0 && r != -ENOENT)
                        return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, r,
                                              "Failed to read os-release file, ignoring: %m");

                support_end = _support_end_alloc;
        }

        if (isempty(support_end)) { /* An empty string is a explicit way to say "no EOL exists" */
                if (ret_eol)
                        *ret_eol = USEC_INFINITY;

                return false;  /* no end date defined */
        }

        struct tm tm = {};
        const char *k = strptime(support_end, "%Y-%m-%d", &tm);
        if (!k || *k)
                return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, SYNTHETIC_ERRNO(EINVAL),
                                      "Failed to parse SUPPORT_END= from os-release file, ignoring: %s", support_end);

        usec_t eol;
        r = mktime_or_timegm_usec(&tm, /* utc= */ true, &eol);
        if (r < 0)
                return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, r,
                                      "Failed to convert SUPPORT_END= time from os-release file, ignoring: %m");

        if (ret_eol)
                *ret_eol = eol;

        return now(CLOCK_REALTIME) > eol;
}

const char* os_release_pretty_name(const char *pretty_name, const char *name) {
        /* Distills a "pretty" name to show from os-release data. First argument is supposed to be the
         * PRETTY_NAME= field, the second one the NAME= field. This function is trivial, of course, and
         * exists mostly to ensure we use the same logic wherever possible. */

        return empty_to_null(pretty_name) ?:
                empty_to_null(name) ?: "Linux";
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include "alloc-util.h"
4	#include "chase.h"
5	#include "dirent-util.h"
6	#include "env-file.h"
7	#include "env-util.h"
8	#include "errno-util.h"
9	#include "fd-util.h"
10	#include "fileio.h"
11	#include "fs-util.h"
12	#include "glyph-util.h"
13	#include "log.h"
14	#include "macro.h"
15	#include "os-util.h"
16	#include "parse-util.h"
17	#include "path-util.h"
18	#include "stat-util.h"
19	#include "string-table.h"
20	#include "string-util.h"
21	#include "strv.h"
22	#include "utf8.h"
23	#include "xattr-util.h"
24
25	static const char* const image_class_table[_IMAGE_CLASS_MAX] = {
26	[IMAGE_MACHINE] = "machine",
27	[IMAGE_PORTABLE] = "portable",
28	[IMAGE_SYSEXT] = "sysext",
29	[IMAGE_CONFEXT] = "confext",
30	};
31
32	DEFINE_STRING_TABLE_LOOKUP(image_class, ImageClass);	212✔
33
34	/* Helper struct for naming simplicity and reusability */
35	static const struct {
36	const char *release_file_directory;
37	const char *release_file_path_prefix;
38	} image_class_release_info[_IMAGE_CLASS_MAX] = {
39	[IMAGE_SYSEXT] = {
40	.release_file_directory = "/usr/lib/extension-release.d/",
41	.release_file_path_prefix = "/usr/lib/extension-release.d/extension-release.",
42	},
43	[IMAGE_CONFEXT] = {
44	.release_file_directory = "/etc/extension-release.d/",
45	.release_file_path_prefix = "/etc/extension-release.d/extension-release.",
46	}
47	};
48
49	bool image_name_is_valid(const char *s) {	24,539✔
50	if (!filename_is_valid(s))	24,539✔
51	return false;
52
53	if (string_has_cc(s, NULL))	19,354✔
54	return false;
55
56	if (!utf8_is_valid(s))	19,354✔
57	return false;
58
59	/* Temporary files for atomically creating new files */
60	if (startswith(s, ".#"))	19,354✔
61	return false;	1✔
62
63	return true;
64	}
65
66	int path_extract_image_name(const char path, char *ret) {	6,778✔
67	_cleanup_free_ char *fn = NULL;	6,778✔
68	int r;	6,778✔
69
70	assert(path);	6,778✔
71	assert(ret);	6,778✔
72
73	/* Extract last component from path, without any "/" suffixes. */
74	r = path_extract_filename(path, &fn);	6,778✔
75	if (r < 0)	6,778✔
76	return r;
77	if (r != O_DIRECTORY) {	6,778✔
78	/* Chop off any image suffixes we recognize (unless we already know this must refer to some dir) */
79	char *m = ENDSWITH_SET(fn, ".sysext.raw", ".confext.raw", ".raw");	6,778✔
80	if (m)	6,778✔
81	*m = 0;	3,339✔
82	}
83
84	/* Truncate the version/counting suffixes */
85	fn[strcspn(fn, "_+")] = 0;	6,778✔
86
87	if (!image_name_is_valid(fn))	6,778✔
88	return -EINVAL;
89
90	*ret = TAKE_PTR(fn);	6,778✔
91	return 0;	6,778✔
92	}
93
94	int path_is_extension_tree(ImageClass image_class, const char path, const char extension, bool relax_extension_release_check) {	255✔
95	int r;	255✔
96
97	assert(path);	255✔
98
99	/* Does the path exist at all? If not, generate an error immediately. This is useful so that a missing root dir
100	* always results in -ENOENT, and we can properly distinguish the case where the whole root doesn't exist from
101	* the case where just the os-release file is missing. */
102	r = access_nofollow(path, F_OK);	255✔
103	if (r < 0)	255✔
104	return r;
105
106	/* We use /usr/lib/extension-release.d/extension-release[.NAME] as flag for something being a system extension,
107	* /etc/extension-release.d/extension-release[.NAME] as flag for something being a system configuration, and finally,
108	* and {/etc\|/usr/lib}/os-release as a flag for something being an OS (when not an extension). */
109	r = open_extension_release(path, image_class, extension, relax_extension_release_check, NULL, NULL);	254✔
110	if (r == -ENOENT) /* We got nothing */	254✔
111	return 0;
112	if (r < 0)	206✔
UNCOV 113	return r;	×
114
115	return 1;
116	}
117
118	static int extension_release_strict_xattr_value(int extension_release_fd, const char extension_release_dir_path, const char filename) {	579✔
119	int r;	579✔
120
121	assert(extension_release_fd >= 0);	579✔
122	assert(extension_release_dir_path);	579✔
123	assert(filename);	579✔
124
125	/* No xattr or cannot parse it? Then skip this. */
126	r = getxattr_at_bool(extension_release_fd, /* path= / NULL, "user.extension-release.strict", / flags= */ 0);	579✔
127	if (ERRNO_IS_NEG_XATTR_ABSENT(r))	579✔
128	return log_debug_errno(r, "%s/%s does not have user.extension-release.strict xattr, ignoring.",	56✔
129	extension_release_dir_path, filename);
130	if (r < 0)	523✔
UNCOV 131	return log_debug_errno(r, "%s/%s: Failed to read 'user.extension-release.strict' extended attribute from file, ignoring: %m",	×
132	extension_release_dir_path, filename);
133
134	/* Explicitly set to request strict matching? Skip it. */
135	if (r > 0) {	523✔
UNCOV 136	log_debug("%s/%s: 'user.extension-release.strict' attribute is true, ignoring file.",	×
137	extension_release_dir_path, filename);
UNCOV 138	return true;	×
139	}
140
141	log_debug("%s/%s: 'user.extension-release.strict' attribute is false%s",	1,046✔
142	extension_release_dir_path, filename,
143	glyph(GLYPH_ELLIPSIS));
144
145	return false;
146	}
147
148	int open_os_release_at(int rfd, char *ret_path, int ret_fd) {	2,124✔
149	const char *e;	2,124✔
150	int r;	2,124✔
151
152	assert(rfd >= 0 \|\| rfd == AT_FDCWD);	2,124✔
153
154	e = secure_getenv("SYSTEMD_OS_RELEASE");	2,124✔
155	if (e)	2,124✔
156	return chaseat(rfd, e, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);	12✔
157
158	FOREACH_STRING(path, "/etc/os-release", "/usr/lib/os-release") {	2,602✔
159	r = chaseat(rfd, path, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);	2,401✔
160	if (r != -ENOENT)	2,401✔
161	return r;	1,911✔
162	}
163
164	return -ENOENT;	201✔
165	}
166
167	int open_os_release(const char root, char ret_path, int ret_fd) {	1,240✔
168	_cleanup_close_ int rfd = -EBADF, fd = -EBADF;	1,240✔
169	_cleanup_free_ char *p = NULL;	1,240✔
170	int r;	1,240✔
171
172	rfd = open(empty_to_root(root), O_CLOEXEC \| O_DIRECTORY \| O_PATH);	1,240✔
173	if (rfd < 0)	1,240✔
UNCOV 174	return -errno;	×
175
176	r = open_os_release_at(rfd, ret_path ? &p : NULL, ret_fd ? &fd : NULL);	1,273✔
177	if (r < 0)	1,240✔
178	return r;
179
180	if (ret_path) {	1,236✔
181	r = chaseat_prefix_root(p, root, ret_path);	1,207✔
182	if (r < 0)	1,207✔
183	return r;
184	}
185
186	if (ret_fd)	1,236✔
187	*ret_fd = TAKE_FD(fd);	1,236✔
188
189	return 0;
190	}
191
192	int open_extension_release_at(	2,564✔
193	int rfd,
194	ImageClass image_class,
195	const char *extension,
196	bool relax_extension_release_check,
197	char **ret_path,
198	int *ret_fd) {
199
200	_cleanup_free_ char dir_path = NULL, path_found = NULL;	2,564✔
201	_cleanup_close_ int fd_found = -EBADF;	2,564✔
202	_cleanup_closedir_ DIR *dir = NULL;	2,564✔
203	bool found = false;	2,564✔
204	const char *p;	2,564✔
205	int r;	2,564✔
206
207	assert(rfd >= 0 \|\| rfd == AT_FDCWD);	2,564✔
208	assert(!extension \|\| (image_class >= 0 && image_class < _IMAGE_CLASS_MAX));	2,564✔
209
210	if (!extension)	2,564✔
211	return open_os_release_at(rfd, ret_path, ret_fd);	884✔
212
213	if (!IN_SET(image_class, IMAGE_SYSEXT, IMAGE_CONFEXT))	1,680✔
214	return -EINVAL;
215
216	if (!image_name_is_valid(extension))	1,680✔
UNCOV 217	return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "The extension name %s is invalid.", extension);	×
218
219	p = strjoina(image_class_release_info[image_class].release_file_path_prefix, extension);	8,400✔
220	r = chaseat(rfd, p, CHASE_AT_RESOLVE_IN_ROOT, ret_path, ret_fd);	1,680✔
221	log_full_errno_zerook(LOG_DEBUG, MIN(r, 0), "Checking for %s: %m", p);	1,680✔
222	if (r != -ENOENT)	1,680✔
223	return r;
224
225	/* Cannot find the expected extension-release file? The image filename might have been mangled on
226	* deployment, so fallback to checking for any file in the extension-release.d directory, and return
227	* the first one with a user.extension-release xattr instead. The user.extension-release.strict
228	* xattr is checked to ensure the author of the image considers it OK if names do not match. */
229
230	p = image_class_release_info[image_class].release_file_directory;	833✔
231	r = chase_and_opendirat(rfd, p, CHASE_AT_RESOLVE_IN_ROOT, &dir_path, &dir);	833✔
232	if (r < 0)	833✔
233	return log_debug_errno(r, "Cannot open %s, ignoring: %m", p);	300✔
234
235	FOREACH_DIRENT(de, dir, return -errno) {	2,188✔
236	_cleanup_close_ int fd = -EBADF;	4,219✔
237	const char *image_name;	589✔
238
239	if (!IN_SET(de->d_type, DT_REG, DT_UNKNOWN))	589✔
UNCOV 240	continue;	×
241
242	image_name = startswith(de->d_name, "extension-release.");	589✔
243	if (!image_name)	589✔
UNCOV 244	continue;	×
245
246	if (!image_name_is_valid(image_name)) {	589✔
247	log_debug("%s/%s is not a valid release file name, ignoring.", dir_path, de->d_name);	×
UNCOV 248	continue;	×
249	}
250
251	/* We already chased the directory, and checked that this is a real file, so we shouldn't
252	* fail to open it. */
253	fd = openat(dirfd(dir), de->d_name, O_PATH\|O_CLOEXEC\|O_NOFOLLOW);	589✔
254	if (fd < 0)	589✔
UNCOV 255	return log_debug_errno(errno, "Failed to open release file %s/%s: %m", dir_path, de->d_name);	×
256
257	/* Really ensure it is a regular file after we open it. */
258	r = fd_verify_regular(fd);	589✔
259	if (r < 0) {	589✔
260	log_debug_errno(r, "%s/%s is not a regular file, ignoring: %m", dir_path, de->d_name);	×
UNCOV 261	continue;	×
262	}
263
264	if (!relax_extension_release_check) {	589✔
265	_cleanup_free_ char *base_extension = NULL;	583✔
266
267	r = path_extract_image_name(extension, &base_extension);	583✔
268	if (r < 0) {	583✔
269	log_debug_errno(r, "Failed to extract image name from %s, ignoring: %m", extension);	×
UNCOV 270	continue;	×
271	}
272
273	if (!streq(image_name, base_extension) &&	1,162✔
274	extension_release_strict_xattr_value(fd, dir_path, image_name) != 0)	579✔
275	continue;	56✔
276	}
277
278	/* We already found what we were looking for, but there's another candidate? We treat this as
279	* an error, as we want to enforce that there are no ambiguities in case we are in the
280	* fallback path. */
281	if (found)	533✔
282	return -ENOTUNIQ;
283
284	found = true;	533✔
285
286	if (ret_fd)	533✔
287	fd_found = TAKE_FD(fd);	520✔
288
289	if (ret_path) {	533✔
290	path_found = path_join(dir_path, de->d_name);	519✔
291	if (!path_found)	519✔
292	return -ENOMEM;
293	}
294	}
295	if (!found)	533✔
296	return -ENOENT;
297
298	if (ret_fd)	533✔
299	*ret_fd = TAKE_FD(fd_found);	520✔
300	if (ret_path)	533✔
301	*ret_path = TAKE_PTR(path_found);	519✔
302
303	return 0;
304	}
305
306	int open_extension_release(	2,283✔
307	const char *root,
308	ImageClass image_class,
309	const char *extension,
310	bool relax_extension_release_check,
311	char **ret_path,
312	int *ret_fd) {
313
314	_cleanup_close_ int rfd = -EBADF, fd = -EBADF;	2,283✔
315	_cleanup_free_ char *p = NULL;	2,283✔
316	int r;	2,283✔
317
318	rfd = open(empty_to_root(root), O_CLOEXEC \| O_DIRECTORY \| O_PATH);	2,283✔
319	if (rfd < 0)	2,283✔
UNCOV 320	return -errno;	×
321
322	r = open_extension_release_at(rfd, image_class, extension, relax_extension_release_check,	2,877✔
323	ret_path ? &p : NULL, ret_fd ? &fd : NULL);
324	if (r < 0)	2,283✔
325	return r;
326
327	if (ret_path) {	1,792✔
328	r = chaseat_prefix_root(p, root, ret_path);	1,568✔
329	if (r < 0)	1,568✔
330	return r;
331	}
332
333	if (ret_fd)	1,792✔
334	*ret_fd = TAKE_FD(fd);	1,586✔
335
336	return 0;
337	}
338
339	static int parse_extension_release_atv(	281✔
340	int rfd,
341	ImageClass image_class,
342	const char *extension,
343	bool relax_extension_release_check,
344	va_list ap) {
345
346	_cleanup_close_ int fd = -EBADF;	281✔
347	_cleanup_free_ char *p = NULL;	281✔
348	int r;	281✔
349
350	assert(rfd >= 0 \|\| rfd == AT_FDCWD);	281✔
351
352	r = open_extension_release_at(rfd, image_class, extension, relax_extension_release_check, &p, &fd);	281✔
353	if (r < 0)	281✔
354	return r;
355
356	return parse_env_file_fdv(fd, p, ap);	274✔
357	}
358
359	int parse_extension_release_at_sentinel(	6✔
360	int rfd,
361	ImageClass image_class,
362	bool relax_extension_release_check,
363	const char *extension,
364	...) {
365
366	va_list ap;	6✔
367	int r;	6✔
368
369	assert(rfd >= 0 \|\| rfd == AT_FDCWD);	6✔
370
371	va_start(ap, extension);	6✔
372	r = parse_extension_release_atv(rfd, image_class, extension, relax_extension_release_check, ap);	6✔
373	va_end(ap);	6✔
374	return r;	6✔
375	}
376
377	int parse_extension_release_sentinel(	275✔
378	const char *root,
379	ImageClass image_class,
380	bool relax_extension_release_check,
381	const char *extension,
382	...) {
383
384	_cleanup_close_ int rfd = -EBADF;	275✔
385	va_list ap;	275✔
386	int r;	275✔
387
388	rfd = open(empty_to_root(root), O_CLOEXEC \| O_DIRECTORY \| O_PATH);	275✔
389	if (rfd < 0)	275✔
UNCOV 390	return -errno;	×
391
392	va_start(ap, extension);	275✔
393	r = parse_extension_release_atv(rfd, image_class, extension, relax_extension_release_check, ap);	275✔
394	va_end(ap);	275✔
395	return r;	275✔
396	}
397
398	int load_os_release_pairs_with_prefix(const char root, const char prefix, char ***ret) {	220✔
399	_cleanup_strv_free_ char os_release_pairs = NULL, os_release_pairs_prefixed = NULL;	220✔
400	int r;	220✔
401
402	r = load_os_release_pairs(root, &os_release_pairs);	220✔
403	if (r < 0)	220✔
404	return r;
405
406	STRV_FOREACH_PAIR(p, q, os_release_pairs) {	2,640✔
407	char *line;	2,420✔
408
409	/* We strictly return only the four main ID fields and ignore the rest */
410	if (!STR_IN_SET(*p, "ID", "VERSION_ID", "BUILD_ID", "VARIANT_ID"))	2,420✔
411	continue;	1,980✔
412
413	ascii_strlower(*p);	440✔
414	line = strjoin(prefix, p, "=", q);	440✔
415	if (!line)	440✔
416	return -ENOMEM;
417	r = strv_consume(&os_release_pairs_prefixed, line);	440✔
418	if (r < 0)	440✔
419	return r;
420	}
421
422	*ret = TAKE_PTR(os_release_pairs_prefixed);	220✔
423
424	return 0;	220✔
425	}
426
427	int load_extension_release_pairs(const char root, ImageClass image_class, const char extension, bool relax_extension_release_check, char ***ret) {	964✔
428	_cleanup_close_ int fd = -EBADF;	964✔
429	_cleanup_free_ char *p = NULL;	964✔
430	int r;	964✔
431
432	r = open_extension_release(root, image_class, extension, relax_extension_release_check, &p, &fd);	964✔
433	if (r < 0)	964✔
434	return r;
435
436	return load_env_file_pairs_fd(fd, p, ret);	592✔
437	}
438
439	int os_release_support_ended(const char support_end, bool quiet, usec_t ret_eol) {	52✔
440	_cleanup_free_ char *_support_end_alloc = NULL;	52✔
441	int r;	52✔
442
443	if (!support_end) {	52✔
444	/* If the caller has the variably handy, they can pass it in. If not, we'll read it
445	* ourselves. */
446
447	r = parse_os_release(NULL,	49✔
448	"SUPPORT_END", &_support_end_alloc);
449	if (r < 0 && r != -ENOENT)	49✔
UNCOV 450	return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, r,	×
451	"Failed to read os-release file, ignoring: %m");
452
453	support_end = _support_end_alloc;	49✔
454	}
455
456	if (isempty(support_end)) { /* An empty string is a explicit way to say "no EOL exists" */	52✔
457	if (ret_eol)	49✔
UNCOV 458	*ret_eol = USEC_INFINITY;	×
459
460	return false; /* no end date defined */	49✔
461	}
462
463	struct tm tm = {};	3✔
464	const char *k = strptime(support_end, "%Y-%m-%d", &tm);	3✔
465	if (!k \|\| *k)	3✔
466	return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, SYNTHETIC_ERRNO(EINVAL),	1✔
467	"Failed to parse SUPPORT_END= from os-release file, ignoring: %s", support_end);
468
469	usec_t eol;	2✔
470	r = mktime_or_timegm_usec(&tm, /* utc= */ true, &eol);	2✔
471	if (r < 0)	2✔
UNCOV 472	return log_full_errno(quiet ? LOG_DEBUG : LOG_WARNING, r,	×
473	"Failed to convert SUPPORT_END= time from os-release file, ignoring: %m");
474
475	if (ret_eol)	2✔
UNCOV 476	*ret_eol = eol;	×
477
478	return now(CLOCK_REALTIME) > eol;	2✔
479	}
480
481	const char* os_release_pretty_name(const char pretty_name, const char name) {	48✔
482	/* Distills a "pretty" name to show from os-release data. First argument is supposed to be the
483	* PRETTY_NAME= field, the second one the NAME= field. This function is trivial, of course, and
484	* exists mostly to ensure we use the same logic wherever possible. */
485
486	return empty_to_null(pretty_name) ?:	48✔
487	empty_to_null(name) ?: "Linux";	6✔
488	}

systemd / systemd / 14895667988

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