19448983682

Committed 17 Nov 2025 11:32PM UTC coverage: 72.503% (-0.2%) from 72.719%

Build # 19448983682

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Commit Message

core/unit: unit_process_job() tweaks (#39753)

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6 of 8 new or added lines in 1 file covered. (75.0%)

3363 existing lines in 68 files now uncovered.

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90.37

/src/basic/tmpfile-util.c

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

#include <stdlib.h>
#include <unistd.h>

#include "alloc-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "log.h"
#include "path-util.h"
#include "random-util.h"
#include "string-util.h"
#include "sync-util.h"
#include "tmpfile-util.h"
#include "umask-util.h"

static int fopen_temporary_internal(int dir_fd, const char *path, FILE **ret_file) {
        _cleanup_fclose_ FILE *f = NULL;
        _cleanup_close_ int fd = -EBADF;
        int r;

        assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
        assert(path);

        fd = openat(dir_fd, path, O_CLOEXEC|O_NOCTTY|O_RDWR|O_CREAT|O_EXCL, 0600);
        if (fd < 0)
                return -errno;

        /* This assumes that returned FILE object is short-lived and used within the same single-threaded
         * context and never shared externally, hence locking is not necessary. */

        r = take_fdopen_unlocked(&fd, "w", &f);
        if (r < 0) {
                (void) unlinkat(dir_fd, path, 0);
                return r;
        }

        if (ret_file)
                *ret_file = TAKE_PTR(f);

        return 0;
}

int fopen_temporary_at(int dir_fd, const char *path, FILE **ret_file, char **ret_path) {
        _cleanup_free_ char *t = NULL;
        int r;

        assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
        assert(path);

        r = tempfn_random(path, NULL, &t);
        if (r < 0)
                return r;

        r = fopen_temporary_internal(dir_fd, t, ret_file);
        if (r < 0)
                return r;

        if (ret_path)
                *ret_path = TAKE_PTR(t);

        return 0;
}

int fopen_temporary_child_at(int dir_fd, const char *path, FILE **ret_file, char **ret_path) {
        _cleanup_free_ char *t = NULL;
        int r;

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

        if (!path) {
                r = tmp_dir(&path);
                if (r < 0)
                        return r;
        }

        r = tempfn_random_child(path, NULL, &t);
        if (r < 0)
                return r;

        r = fopen_temporary_internal(dir_fd, t, ret_file);
        if (r < 0)
                return r;

        if (ret_path)
                *ret_path = TAKE_PTR(t);

        return 0;
}

/* This is much like mkostemp() but is subject to umask(). */
int mkostemp_safe(char *pattern) {
        assert(pattern);
        BLOCK_WITH_UMASK(0077);
        return RET_NERRNO(mkostemp(pattern, O_CLOEXEC));
}

int fmkostemp_safe(char *pattern, const char *mode, FILE **ret_f) {
        _cleanup_close_ int fd = -EBADF;
        FILE *f;

        fd = mkostemp_safe(pattern);
        if (fd < 0)
                return fd;

        f = take_fdopen(&fd, mode);
        if (!f)
                return -errno;

        *ret_f = f;
        return 0;
}

void unlink_tempfilep(char (*p)[]) {
        assert(p);

        /* If the file is created with mkstemp(), it will (almost always) change the suffix.
         * Treat this as a sign that the file was successfully created. We ignore both the rare case
         * where the original suffix is used and unlink failures. */

        if (!endswith(*p, ".XXXXXX"))
                (void) unlink(*p);
}

static int tempfn_build(const char *p, const char *pre, const char *post, bool child, char **ret) {
        _cleanup_free_ char *d = NULL, *fn = NULL, *nf = NULL, *result = NULL;
        size_t len_pre, len_post, len_add;
        int r;

        assert(p);
        assert(ret);

        /*
         * Turns this:
         *         /foo/bar/waldo
         *
         * Into this :
         *         /foo/bar/waldo/.#<pre><post> (child == true)
         *         /foo/bar/.#<pre>waldo<post> (child == false)
         */

        if (pre && strchr(pre, '/'))
                return -EINVAL;

        if (post && strchr(post, '/'))
                return -EINVAL;

        len_pre = strlen_ptr(pre);
        len_post = strlen_ptr(post);
        /* NAME_MAX is counted *without* the trailing NUL byte. */
        if (len_pre > NAME_MAX - STRLEN(".#") ||
            len_post > NAME_MAX - STRLEN(".#") - len_pre)
                return -EINVAL;

        len_add = len_pre + len_post + STRLEN(".#");

        if (child) {
                d = strdup(p);
                if (!d)
                        return -ENOMEM;
        } else {
                r = path_extract_directory(p, &d);
                if (r < 0 && r != -EDESTADDRREQ) /* EDESTADDRREQ → No directory specified, just a filename */
                        return r;

                r = path_extract_filename(p, &fn);
                if (r < 0)
                        return r;

                if (strlen(fn) > NAME_MAX - len_add)
                        /* We cannot simply prepend and append strings to the filename. Let's truncate the filename. */
                        fn[NAME_MAX - len_add] = '\0';
        }

        nf = strjoin(".#", strempty(pre), strempty(fn), strempty(post));
        if (!nf)
                return -ENOMEM;

        if (d) {
                if (!path_extend(&d, nf))
                        return -ENOMEM;

                result = path_simplify(TAKE_PTR(d));
        } else
                result = TAKE_PTR(nf);

        if (!path_is_valid(result)) /* New path is not valid? (Maybe because too long?) Refuse. */
                return -EINVAL;

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

int tempfn_xxxxxx(const char *p, const char *extra, char **ret) {
        /*
         * Turns this:
         *         /foo/bar/waldo
         *
         * Into this:
         *         /foo/bar/.#<extra>waldoXXXXXX
         */

        return tempfn_build(p, extra, "XXXXXX", /* child = */ false, ret);
}

int tempfn_random(const char *p, const char *extra, char **ret) {
        _cleanup_free_ char *s = NULL;

        assert(p);
        assert(ret);

        /*
         * Turns this:
         *         /foo/bar/waldo
         *
         * Into this:
         *         /foo/bar/.#<extra>waldobaa2a261115984a9
         */

        if (asprintf(&s, "%016" PRIx64, random_u64()) < 0)
                return -ENOMEM;

        return tempfn_build(p, extra, s, /* child = */ false, ret);
}

int tempfn_random_child(const char *p, const char *extra, char **ret) {
        _cleanup_free_ char *s = NULL;
        int r;

        assert(ret);

        /* Turns this:
         *         /foo/bar/waldo
         * Into this:
         *         /foo/bar/waldo/.#<extra>3c2b6219aa75d7d0
         */

        if (!p) {
                r = tmp_dir(&p);
                if (r < 0)
                        return r;
        }

        if (asprintf(&s, "%016" PRIx64, random_u64()) < 0)
                return -ENOMEM;

        return tempfn_build(p, extra, s, /* child = */ true, ret);
}

int open_tmpfile_unlinkable(const char *directory, int flags) {
        int r;

        if (!directory) {
                r = tmp_dir(&directory);
                if (r < 0)
                        return r;
        } else if (isempty(directory))
                return -EINVAL;

        /* Returns an unlinked temporary file that cannot be linked into the file system anymore */

        /* Try O_TMPFILE first, if it is supported */
        int fd = open(directory, flags|O_TMPFILE|O_EXCL, S_IRUSR|S_IWUSR);
        if (fd >= 0)
                return fd;

        /* Fall back to unguessable name + unlinking */
        _cleanup_free_ char *p = path_join(directory, "/systemd-tmp-XXXXXX");
        if (!p)
                return -ENOMEM;

        fd = mkostemp_safe(p);
        if (fd < 0)
                return fd;

        (void) unlink(p);

        return fd;
}

int open_tmpfile_linkable_at(int dir_fd, const char *target, int flags, char **ret_path) {
        int r;

        assert(target);
        assert(ret_path);

        /* Don't allow O_EXCL, as that has a special meaning for O_TMPFILE */
        assert((flags & O_EXCL) == 0);

        /* Creates a temporary file, that shall be renamed to "target" later. If possible, this uses O_TMPFILE – in
         * which case "ret_path" will be returned as NULL. If not possible the temporary path name used is returned in
         * "ret_path". Use link_tmpfile() below to rename the result after writing the file in full. */

        int fd = open_parent_at(dir_fd, target, O_TMPFILE|flags, 0640);
        if (fd >= 0) {
                *ret_path = NULL;
                return fd;
        }

        log_debug_errno(fd, "Failed to use O_TMPFILE for %s: %m", target);

        _cleanup_free_ char *tmp = NULL;
        r = tempfn_random(target, NULL, &tmp);
        if (r < 0)
                return r;

        fd = openat(dir_fd, tmp, O_CREAT|O_EXCL|O_NOFOLLOW|O_NOCTTY|flags, 0640);
        if (fd < 0)
                return -errno;

        *ret_path = TAKE_PTR(tmp);

        return fd;
}

int fopen_tmpfile_linkable_at(int dir_fd, const char *target, int flags, char **ret_path, FILE **ret_file) {
        _cleanup_free_ char *path = NULL;
        _cleanup_fclose_ FILE *f = NULL;
        _cleanup_close_ int fd = -EBADF;

        assert(target);
        assert(ret_file);
        assert(ret_path);

        fd = open_tmpfile_linkable_at(dir_fd, target, flags, &path);
        if (fd < 0)
                return fd;

        f = take_fdopen(&fd, "w");
        if (!f)
                return -ENOMEM;

        *ret_path = TAKE_PTR(path);
        *ret_file = TAKE_PTR(f);
        return 0;
}

int link_tmpfile_at(int fd, int dir_fd, const char *path, const char *target, LinkTmpfileFlags flags) {
        int r;

        assert(fd >= 0);
        assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
        assert(target);

        /* Moves a temporary file created with open_tmpfile() above into its final place. If "path" is NULL
         * an fd created with O_TMPFILE is assumed, and linkat() is used. Otherwise it is assumed O_TMPFILE
         * is not supported on the directory, and renameat2() is used instead. */

        if (FLAGS_SET(flags, LINK_TMPFILE_SYNC) && fsync(fd) < 0)
                return -errno;

        if (path) {
                if (FLAGS_SET(flags, LINK_TMPFILE_REPLACE))
                        r = RET_NERRNO(renameat(dir_fd, path, dir_fd, target));
                else
                        r = rename_noreplace(dir_fd, path, dir_fd, target);
        } else {
                if (FLAGS_SET(flags, LINK_TMPFILE_REPLACE))
                        r = linkat_replace(fd, /* oldpath= */ NULL, dir_fd, target);
                else
                        r = link_fd(fd, dir_fd, target);
        }
        if (r < 0)
                return r;

        if (FLAGS_SET(flags, LINK_TMPFILE_SYNC)) {
                r = fsync_full(fd);
                if (r < 0)
                        return r;
        }

        return 0;
}

int flink_tmpfile_at(FILE *f, int dir_fd, const char *path, const char *target, LinkTmpfileFlags flags) {
        int fd, r;

        assert(f);
        assert(target);

        fd = fileno(f);
        if (fd < 0) /* Not all FILE* objects encapsulate fds */
                return -EBADF;

        r = fflush_and_check(f);
        if (r < 0)
                return r;

        return link_tmpfile_at(fd, dir_fd, path, target, flags);
}

int mkdtemp_malloc(const char *template, char **ret) {
        _cleanup_free_ char *p = NULL;
        int r;

        assert(ret);

        if (template)
                p = strdup(template);
        else {
                const char *tmp;

                r = tmp_dir(&tmp);
                if (r < 0)
                        return r;

                p = path_join(tmp, "XXXXXX");
        }
        if (!p)
                return -ENOMEM;

        if (!mkdtemp(p))
                return -errno;

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

int mkdtemp_open(const char *template, int flags, char **ret) {
        _cleanup_free_ char *p = NULL;
        int fd, r;

        r = mkdtemp_malloc(template, &p);
        if (r < 0)
                return r;

        fd = RET_NERRNO(open(p, O_DIRECTORY|O_CLOEXEC|flags));
        if (fd < 0) {
                (void) rmdir(p);
                return fd;
        }

        if (ret)
                *ret = TAKE_PTR(p);

        return fd;
}

void cleanup_tmpfile_data_done(struct cleanup_tmpfile_data *d) {
        assert(d);

        if (!d->dir_fd ||
            *d->dir_fd < 0 ||
            !d->filename ||
            !*d->filename)
                return;

        PROTECT_ERRNO;

        (void) unlinkat(*d->dir_fd, *d->filename, /* flags= */ 0);
        d->dir_fd = NULL;
        d->filename = NULL;
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <stdlib.h>
4	#include <unistd.h>
5
6	#include "alloc-util.h"
7	#include "errno-util.h"
8	#include "fd-util.h"
9	#include "fileio.h"
10	#include "fs-util.h"
11	#include "log.h"
12	#include "path-util.h"
13	#include "random-util.h"
14	#include "string-util.h"
15	#include "sync-util.h"
16	#include "tmpfile-util.h"
17	#include "umask-util.h"
18
19	static int fopen_temporary_internal(int dir_fd, const char path, FILE *ret_file) {	180,115✔
20	_cleanup_fclose_ FILE *f = NULL;	180,115✔
21	_cleanup_close_ int fd = -EBADF;	180,115✔
22	int r;	180,115✔
23
24	assert(dir_fd >= 0 \|\| dir_fd == AT_FDCWD);	180,115✔
25	assert(path);	180,115✔
26
27	fd = openat(dir_fd, path, O_CLOEXEC\|O_NOCTTY\|O_RDWR\|O_CREAT\|O_EXCL, 0600);	180,115✔
28	if (fd < 0)	180,115✔
29	return -errno;	1✔
30
31	/* This assumes that returned FILE object is short-lived and used within the same single-threaded
32	* context and never shared externally, hence locking is not necessary. */
33
34	r = take_fdopen_unlocked(&fd, "w", &f);	180,114✔
35	if (r < 0) {	180,114✔
36	(void) unlinkat(dir_fd, path, 0);	×
37	return r;	×
38	}
39
40	if (ret_file)	180,114✔
41	*ret_file = TAKE_PTR(f);	180,114✔
42
43	return 0;
44	}
45
46	int fopen_temporary_at(int dir_fd, const char path, FILE ret_file, char *ret_path) {	180,113✔
47	_cleanup_free_ char *t = NULL;	180,113✔
48	int r;	180,113✔
49
50	assert(dir_fd >= 0 \|\| dir_fd == AT_FDCWD);	180,113✔
51	assert(path);	180,113✔
52
53	r = tempfn_random(path, NULL, &t);	180,113✔
54	if (r < 0)	180,113✔
55	return r;
56
57	r = fopen_temporary_internal(dir_fd, t, ret_file);	180,113✔
58	if (r < 0)	180,113✔
59	return r;
60
61	if (ret_path)	180,112✔
62	*ret_path = TAKE_PTR(t);	180,112✔
63
64	return 0;
65	}
66
67	int fopen_temporary_child_at(int dir_fd, const char path, FILE ret_file, char *ret_path) {	2✔
68	_cleanup_free_ char *t = NULL;	2✔
69	int r;	2✔
70
71	assert(dir_fd >= 0 \|\| dir_fd == AT_FDCWD);	2✔
72
73	if (!path) {	2✔
74	r = tmp_dir(&path);	1✔
75	if (r < 0)	1✔
76	return r;
77	}
78
79	r = tempfn_random_child(path, NULL, &t);	2✔
80	if (r < 0)	2✔
81	return r;
82
83	r = fopen_temporary_internal(dir_fd, t, ret_file);	2✔
84	if (r < 0)	2✔
85	return r;
86
87	if (ret_path)	2✔
88	*ret_path = TAKE_PTR(t);	2✔
89
90	return 0;
91	}
92
93	/* This is much like mkostemp() but is subject to umask(). */
94	int mkostemp_safe(char *pattern) {	243✔
95	assert(pattern);	243✔
96	BLOCK_WITH_UMASK(0077);	243✔
97	return RET_NERRNO(mkostemp(pattern, O_CLOEXEC));	243✔
98	}
99
100	int fmkostemp_safe(char pattern, const char mode, FILE **ret_f) {	40✔
101	_cleanup_close_ int fd = -EBADF;	40✔
102	FILE *f;	40✔
103
104	fd = mkostemp_safe(pattern);	40✔
105	if (fd < 0)	40✔
106	return fd;
107
108	f = take_fdopen(&fd, mode);	40✔
109	if (!f)	40✔
110	return -errno;	×
111
112	*ret_f = f;	40✔
113	return 0;	40✔
114	}
115
116	void unlink_tempfilep(char (*p)[]) {	119✔
117	assert(p);	119✔
118
119	/* If the file is created with mkstemp(), it will (almost always) change the suffix.
120	* Treat this as a sign that the file was successfully created. We ignore both the rare case
121	* where the original suffix is used and unlink failures. */
122
123	if (!endswith(*p, ".XXXXXX"))	119✔
124	(void) unlink(*p);	117✔
125	}	119✔
126
127	static int tempfn_build(const char p, const char pre, const char post, bool child, char *ret) {	324,433✔
128	_cleanup_free_ char d = NULL, fn = NULL, nf = NULL, result = NULL;	324,433✔
129	size_t len_pre, len_post, len_add;	324,433✔
130	int r;	324,433✔
131
132	assert(p);	324,433✔
133	assert(ret);	324,433✔
134
135	/*
136	* Turns this:
137	* /foo/bar/waldo
138	*
139	* Into this :
140	* /foo/bar/waldo/.#<pre><post> (child == true)
141	* /foo/bar/.#<pre>waldo<post> (child == false)
142	*/
143
144	if (pre && strchr(pre, '/'))	324,433✔
145	return -EINVAL;
146
147	if (post && strchr(post, '/'))	324,430✔
148	return -EINVAL;
149
150	len_pre = strlen_ptr(pre);	324,430✔
151	len_post = strlen_ptr(post);	324,430✔
152	/* NAME_MAX is counted without the trailing NUL byte. */
153	if (len_pre > NAME_MAX - STRLEN(".#") \|\|	324,430✔
154	len_post > NAME_MAX - STRLEN(".#") - len_pre)	324,430✔
155	return -EINVAL;
156
157	len_add = len_pre + len_post + STRLEN(".#");	324,430✔
158
159	if (child) {	324,430✔
160	d = strdup(p);	638✔
161	if (!d)	638✔
162	return -ENOMEM;
163	} else {
164	r = path_extract_directory(p, &d);	323,792✔
165	if (r < 0 && r != -EDESTADDRREQ) /* EDESTADDRREQ → No directory specified, just a filename */	323,792✔
166	return r;
167
168	r = path_extract_filename(p, &fn);	323,784✔
169	if (r < 0)	323,784✔
170	return r;
171
172	if (strlen(fn) > NAME_MAX - len_add)	323,784✔
173	/* We cannot simply prepend and append strings to the filename. Let's truncate the filename. */
174	fn[NAME_MAX - len_add] = '\0';	4✔
175	}
176
177	nf = strjoin(".#", strempty(pre), strempty(fn), strempty(post));	648,728✔
178	if (!nf)	324,422✔
179	return -ENOMEM;
180
181	if (d) {	324,422✔
182	if (!path_extend(&d, nf))	319,075✔
183	return -ENOMEM;
184
185	result = path_simplify(TAKE_PTR(d));	319,075✔
186	} else
187	result = TAKE_PTR(nf);
188
189	if (!path_is_valid(result)) /* New path is not valid? (Maybe because too long?) Refuse. */	324,422✔
190	return -EINVAL;
191
192	*ret = TAKE_PTR(result);	324,419✔
193	return 0;	324,419✔
194	}
195
196	int tempfn_xxxxxx(const char p, const char extra, char **ret) {	27✔
197	/*
198	* Turns this:
199	* /foo/bar/waldo
200	*
201	* Into this:
202	* /foo/bar/.#<extra>waldoXXXXXX
203	*/
204
205	return tempfn_build(p, extra, "XXXXXX", /* child = */ false, ret);	27✔
206	}
207
208	int tempfn_random(const char p, const char extra, char **ret) {	323,767✔
209	_cleanup_free_ char *s = NULL;	323,767✔
210
211	assert(p);	323,767✔
212	assert(ret);	323,767✔
213
214	/*
215	* Turns this:
216	* /foo/bar/waldo
217	*
218	* Into this:
219	* /foo/bar/.#<extra>waldobaa2a261115984a9
220	*/
221
222	if (asprintf(&s, "%016" PRIx64, random_u64()) < 0)	323,767✔
223	return -ENOMEM;
224
225	return tempfn_build(p, extra, s, /* child = */ false, ret);	323,767✔
226	}
227
228	int tempfn_random_child(const char p, const char extra, char **ret) {	639✔
229	_cleanup_free_ char *s = NULL;	639✔
230	int r;	639✔
231
232	assert(ret);	639✔
233
234	/* Turns this:
235	* /foo/bar/waldo
236	* Into this:
237	* /foo/bar/waldo/.#<extra>3c2b6219aa75d7d0
238	*/
239
240	if (!p) {	639✔
241	r = tmp_dir(&p);	15✔
242	if (r < 0)	15✔
243	return r;
244	}
245
246	if (asprintf(&s, "%016" PRIx64, random_u64()) < 0)	639✔
247	return -ENOMEM;
248
249	return tempfn_build(p, extra, s, /* child = */ true, ret);	639✔
250	}
251
252	int open_tmpfile_unlinkable(const char *directory, int flags) {	6,371✔
253	int r;	6,371✔
254
255	if (!directory) {	6,371✔
256	r = tmp_dir(&directory);	7✔
257	if (r < 0)	7✔
258	return r;	6,371✔
259	} else if (isempty(directory))	12,735✔
260	return -EINVAL;
261
262	/* Returns an unlinked temporary file that cannot be linked into the file system anymore */
263
264	/* Try O_TMPFILE first, if it is supported */
265	int fd = open(directory, flags\|O_TMPFILE\|O_EXCL, S_IRUSR\|S_IWUSR);	6,371✔
266	if (fd >= 0)	6,371✔
267	return fd;
268
269	/* Fall back to unguessable name + unlinking */
270	_cleanup_free_ char *p = path_join(directory, "/systemd-tmp-XXXXXX");	×
271	if (!p)	×
272	return -ENOMEM;
273
274	fd = mkostemp_safe(p);	×
275	if (fd < 0)	×
276	return fd;
277
278	(void) unlink(p);	×
279
280	return fd;	×
281	}
282
283	int open_tmpfile_linkable_at(int dir_fd, const char target, int flags, char *ret_path) {	21,639✔
284	int r;	21,639✔
285
286	assert(target);	21,639✔
287	assert(ret_path);	21,639✔
288
289	/* Don't allow O_EXCL, as that has a special meaning for O_TMPFILE */
290	assert((flags & O_EXCL) == 0);	21,639✔
291
292	/* Creates a temporary file, that shall be renamed to "target" later. If possible, this uses O_TMPFILE – in
293	* which case "ret_path" will be returned as NULL. If not possible the temporary path name used is returned in
294	* "ret_path". Use link_tmpfile() below to rename the result after writing the file in full. */
295
296	int fd = open_parent_at(dir_fd, target, O_TMPFILE\|flags, 0640);	21,639✔
297	if (fd >= 0) {	21,639✔
298	*ret_path = NULL;	21,592✔
299	return fd;	21,639✔
300	}
301
302	log_debug_errno(fd, "Failed to use O_TMPFILE for %s: %m", target);	47✔
303
304	_cleanup_free_ char *tmp = NULL;	47✔
305	r = tempfn_random(target, NULL, &tmp);	47✔
306	if (r < 0)	47✔
307	return r;
308
309	fd = openat(dir_fd, tmp, O_CREAT\|O_EXCL\|O_NOFOLLOW\|O_NOCTTY\|flags, 0640);	47✔
310	if (fd < 0)	47✔
311	return -errno;	33✔
312
313	*ret_path = TAKE_PTR(tmp);	14✔
314
315	return fd;	14✔
316	}
317
318	int fopen_tmpfile_linkable_at(int dir_fd, const char target, int flags, char ret_path, FILE *ret_file) {	5,410✔
319	_cleanup_free_ char *path = NULL;	5,410✔
320	_cleanup_fclose_ FILE *f = NULL;	5,410✔
321	_cleanup_close_ int fd = -EBADF;	5,410✔
322
323	assert(target);	5,410✔
324	assert(ret_file);	5,410✔
325	assert(ret_path);	5,410✔
326
327	fd = open_tmpfile_linkable_at(dir_fd, target, flags, &path);	5,410✔
328	if (fd < 0)	5,410✔
329	return fd;
330
331	f = take_fdopen(&fd, "w");	5,410✔
332	if (!f)	5,410✔
333	return -ENOMEM;
334
335	*ret_path = TAKE_PTR(path);	5,410✔
336	*ret_file = TAKE_PTR(f);	5,410✔
337	return 0;	5,410✔
338	}
339
340	int link_tmpfile_at(int fd, int dir_fd, const char path, const char target, LinkTmpfileFlags flags) {	21,550✔
341	int r;	21,550✔
342
343	assert(fd >= 0);	21,550✔
344	assert(dir_fd >= 0 \|\| dir_fd == AT_FDCWD);	21,550✔
345	assert(target);	21,550✔
346
347	/* Moves a temporary file created with open_tmpfile() above into its final place. If "path" is NULL
348	* an fd created with O_TMPFILE is assumed, and linkat() is used. Otherwise it is assumed O_TMPFILE
349	* is not supported on the directory, and renameat2() is used instead. */
350
351	if (FLAGS_SET(flags, LINK_TMPFILE_SYNC) && fsync(fd) < 0)	21,550✔
352	return -errno;	×
353
354	if (path) {	21,550✔
355	if (FLAGS_SET(flags, LINK_TMPFILE_REPLACE))	14✔
356	r = RET_NERRNO(renameat(dir_fd, path, dir_fd, target));	×
357	else
358	r = rename_noreplace(dir_fd, path, dir_fd, target);	14✔
359	} else {
360	if (FLAGS_SET(flags, LINK_TMPFILE_REPLACE))	21,536✔
361	r = linkat_replace(fd, /* oldpath= */ NULL, dir_fd, target);	20,660✔
362	else
363	r = link_fd(fd, dir_fd, target);	876✔
364	}
365	if (r < 0)	21,550✔
366	return r;
367
368	if (FLAGS_SET(flags, LINK_TMPFILE_SYNC)) {	21,547✔
369	r = fsync_full(fd);	1,389✔
370	if (r < 0)	1,389✔
371	return r;	×
372	}
373
374	return 0;
375	}
376
377	int flink_tmpfile_at(FILE f, int dir_fd, const char path, const char *target, LinkTmpfileFlags flags) {	5,410✔
378	int fd, r;	5,410✔
379
380	assert(f);	5,410✔
381	assert(target);	5,410✔
382
383	fd = fileno(f);	5,410✔
384	if (fd < 0) /* Not all FILE* objects encapsulate fds */	5,410✔
385	return -EBADF;
386
387	r = fflush_and_check(f);	5,410✔
388	if (r < 0)	5,410✔
389	return r;
390
391	return link_tmpfile_at(fd, dir_fd, path, target, flags);	5,410✔
392	}
393
394	int mkdtemp_malloc(const char template, char *ret) {	3,924✔
395	_cleanup_free_ char *p = NULL;	7,848✔
396	int r;	3,924✔
397
398	assert(ret);	3,924✔
399
400	if (template)	3,924✔
401	p = strdup(template);	3,816✔
402	else {
403	const char *tmp;	108✔
404
405	r = tmp_dir(&tmp);	108✔
406	if (r < 0)	108✔
407	return r;	×
408
409	p = path_join(tmp, "XXXXXX");	108✔
410	}
411	if (!p)	3,924✔
412	return -ENOMEM;
413
414	if (!mkdtemp(p))	3,924✔
415	return -errno;	×
416
417	*ret = TAKE_PTR(p);	3,924✔
418	return 0;	3,924✔
419	}
420
421	int mkdtemp_open(const char template, int flags, char *ret) {	46✔
422	_cleanup_free_ char *p = NULL;	46✔
423	int fd, r;	46✔
424
425	r = mkdtemp_malloc(template, &p);	46✔
426	if (r < 0)	46✔
427	return r;
428
429	fd = RET_NERRNO(open(p, O_DIRECTORY\|O_CLOEXEC\|flags));	46✔
430	if (fd < 0) {	×
431	(void) rmdir(p);	×
432	return fd;	×
433	}
434
435	if (ret)	46✔
436	*ret = TAKE_PTR(p);	46✔
437
438	return fd;
439	}
440
441	void cleanup_tmpfile_data_done(struct cleanup_tmpfile_data *d) {	2,862✔
442	assert(d);	2,862✔
443
444	if (!d->dir_fd \|\|	2,862✔
445	*d->dir_fd < 0 \|\|	2,862✔
446	!d->filename \|\|	379✔
447	!*d->filename)	379✔
448	return;	2,862✔
449
450	PROTECT_ERRNO;	×
451
452	(void) unlinkat(d->dir_fd, d->filename, /* flags= */ 0);	×
UNCOV 453	d->dir_fd = NULL;	×
UNCOV 454	d->filename = NULL;	×
455	}

systemd / systemd / 19448983682

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