/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "nm-sd-adapt-shared.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/* When we include libgen.h because we need dirname() we immediately
* undefine basename() since libgen.h defines it as a macro to the
* POSIX version which is really broken. We prefer GNU basename(). */
#include <libgen.h>
#undef basename
#include "alloc-util.h"
#include "extract-word.h"
#include "fd-util.h"
#include "fs-util.h"
#include "glob-util.h"
#include "log.h"
#include "macro.h"
#include "nulstr-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "time-util.h"
#include "utf8.h"
#if 0 /* NM_IGNORED */
int path_split_and_make_absolute(const char *p, char ***ret) {
char **l;
int r;
assert(p);
assert(ret);
l = strv_split(p, ":");
if (!l)
return -ENOMEM;
r = path_strv_make_absolute_cwd(l);
if (r < 0) {
strv_free(l);
return r;
}
*ret = l;
return r;
}
char *path_make_absolute(const char *p, const char *prefix) {
assert(p);
/* Makes every item in the list an absolute path by prepending
* the prefix, if specified and necessary */
if (path_is_absolute(p) || isempty(prefix))
return strdup(p);
return path_join(prefix, p);
}
int safe_getcwd(char **ret) {
char *cwd;
cwd = get_current_dir_name();
if (!cwd)
return negative_errno();
/* Let's make sure the directory is really absolute, to protect us from the logic behind
* CVE-2018-1000001 */
if (cwd[0] != '/') {
free(cwd);
return -ENOMEDIUM;
}
*ret = cwd;
return 0;
}
int path_make_absolute_cwd(const char *p, char **ret) {
char *c;
int r;
assert(p);
assert(ret);
/* Similar to path_make_absolute(), but prefixes with the
* current working directory. */
if (path_is_absolute(p))
c = strdup(p);
else {
_cleanup_free_ char *cwd = NULL;
r = safe_getcwd(&cwd);
if (r < 0)
return r;
c = path_join(cwd, p);
}
if (!c)
return -ENOMEM;
*ret = c;
return 0;
}
int path_make_relative(const char *from_dir, const char *to_path, char **_r) {
char *f, *t, *r, *p;
unsigned n_parents = 0;
assert(from_dir);
assert(to_path);
assert(_r);
/* Strips the common part, and adds ".." elements as necessary. */
if (!path_is_absolute(from_dir) || !path_is_absolute(to_path))
return -EINVAL;
f = strdupa(from_dir);
t = strdupa(to_path);
path_simplify(f, true);
path_simplify(t, true);
/* Skip the common part. */
for (;;) {
size_t a, b;
f += *f == '/';
t += *t == '/';
if (!*f) {
if (!*t)
/* from_dir equals to_path. */
r = strdup(".");
else
/* from_dir is a parent directory of to_path. */
r = strdup(t);
if (!r)
return -ENOMEM;
*_r = r;
return 0;
}
if (!*t)
break;
a = strcspn(f, "/");
b = strcspn(t, "/");
if (a != b || memcmp(f, t, a) != 0)
break;
f += a;
t += b;
}
/* If we're here, then "from_dir" has one or more elements that need to
* be replaced with "..". */
/* Count the number of necessary ".." elements. */
for (; *f;) {
size_t w;
w = strcspn(f, "/");
/* If this includes ".." we can't do a simple series of "..", refuse */
if (w == 2 && f[0] == '.' && f[1] == '.')
return -EINVAL;
/* Count number of elements */
n_parents++;
f += w;
f += *f == '/';
}
r = new(char, n_parents * 3 + strlen(t) + 1);
if (!r)
return -ENOMEM;
for (p = r; n_parents > 0; n_parents--)
p = mempcpy(p, "../", 3);
if (*t)
strcpy(p, t);
else
/* Remove trailing slash */
*(--p) = 0;
*_r = r;
return 0;
}
char* path_startswith_strv(const char *p, char **set) {
char **s, *t;
STRV_FOREACH(s, set) {
t = path_startswith(p, *s);
if (t)
return t;
}
return NULL;
}
int path_strv_make_absolute_cwd(char **l) {
char **s;
int r;
/* Goes through every item in the string list and makes it
* absolute. This works in place and won't rollback any
* changes on failure. */
STRV_FOREACH(s, l) {
char *t;
r = path_make_absolute_cwd(*s, &t);
if (r < 0)
return r;
path_simplify(t, false);
free_and_replace(*s, t);
}
return 0;
}
char **path_strv_resolve(char **l, const char *root) {
char **s;
unsigned k = 0;
bool enomem = false;
int r;
if (strv_isempty(l))
return l;
/* Goes through every item in the string list and canonicalize
* the path. This works in place and won't rollback any
* changes on failure. */
STRV_FOREACH(s, l) {
_cleanup_free_ char *orig = NULL;
char *t, *u;
if (!path_is_absolute(*s)) {
free(*s);
continue;
}
if (root) {
orig = *s;
t = path_join(root, orig);
if (!t) {
enomem = true;
continue;
}
} else
t = *s;
r = chase_symlinks(t, root, 0, &u, NULL);
if (r == -ENOENT) {
if (root) {
u = TAKE_PTR(orig);
free(t);
} else
u = t;
} else if (r < 0) {
free(t);
if (r == -ENOMEM)
enomem = true;
continue;
} else if (root) {
char *x;
free(t);
x = path_startswith(u, root);
if (x) {
/* restore the slash if it was lost */
if (!startswith(x, "/"))
*(--x) = '/';
t = strdup(x);
free(u);
if (!t) {
enomem = true;
continue;
}
u = t;
} else {
/* canonicalized path goes outside of
* prefix, keep the original path instead */
free_and_replace(u, orig);
}
} else
free(t);
l[k++] = u;
}
l[k] = NULL;
if (enomem)
return NULL;
return l;
}
char **path_strv_resolve_uniq(char **l, const char *root) {
if (strv_isempty(l))
return l;
if (!path_strv_resolve(l, root))
return NULL;
return strv_uniq(l);
}
#endif /* NM_IGNORED */
char *path_simplify(char *path, bool kill_dots) {
char *f, *t;
bool slash = false, ignore_slash = false, absolute;
assert(path);
/* Removes redundant inner and trailing slashes. Also removes unnecessary dots
* if kill_dots is true. Modifies the passed string in-place.
*
* ///foo//./bar/. becomes /foo/./bar/. (if kill_dots is false)
* ///foo//./bar/. becomes /foo/bar (if kill_dots is true)
* .//./foo//./bar/. becomes ././foo/./bar/. (if kill_dots is false)
* .//./foo//./bar/. becomes foo/bar (if kill_dots is true)
*/
if (isempty(path))
return path;
absolute = path_is_absolute(path);
f = path;
if (kill_dots && *f == '.' && IN_SET(f[1], 0, '/')) {
ignore_slash = true;
f++;
}
for (t = path; *f; f++) {
if (*f == '/') {
slash = true;
continue;
}
if (slash) {
if (kill_dots && *f == '.' && IN_SET(f[1], 0, '/'))
continue;
slash = false;
if (ignore_slash)
ignore_slash = false;
else
*(t++) = '/';
}
*(t++) = *f;
}
/* Special rule, if we stripped everything, we either need a "/" (for the root directory)
* or "." for the current directory */
if (t == path) {
if (absolute)
*(t++) = '/';
else
*(t++) = '.';
}
*t = 0;
return path;
}
#if 0 /* NM_IGNORED */
int path_simplify_and_warn(
char *path,
unsigned flag,
const char *unit,
const char *filename,
unsigned line,
const char *lvalue) {
bool fatal = flag & PATH_CHECK_FATAL;
assert(!FLAGS_SET(flag, PATH_CHECK_ABSOLUTE | PATH_CHECK_RELATIVE));
if (!utf8_is_valid(path))
return log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, path);
if (flag & (PATH_CHECK_ABSOLUTE | PATH_CHECK_RELATIVE)) {
bool absolute;
absolute = path_is_absolute(path);
if (!absolute && (flag & PATH_CHECK_ABSOLUTE))
return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
"%s= path is not absolute%s: %s",
lvalue, fatal ? "" : ", ignoring", path);
if (absolute && (flag & PATH_CHECK_RELATIVE))
return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
"%s= path is absolute%s: %s",
lvalue, fatal ? "" : ", ignoring", path);
}
path_simplify(path, true);
if (!path_is_valid(path))
return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
"%s= path has invalid length (%zu bytes)%s.",
lvalue, strlen(path), fatal ? "" : ", ignoring");
if (!path_is_normalized(path))
return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EINVAL),
"%s= path is not normalized%s: %s",
lvalue, fatal ? "" : ", ignoring", path);
return 0;
}
#endif /* NM_IGNORED */
char* path_startswith(const char *path, const char *prefix) {
assert(path);
assert(prefix);
/* Returns a pointer to the start of the first component after the parts matched by
* the prefix, iff
* - both paths are absolute or both paths are relative,
* and
* - each component in prefix in turn matches a component in path at the same position.
* An empty string will be returned when the prefix and path are equivalent.
*
* Returns NULL otherwise.
*/
if ((path[0] == '/') != (prefix[0] == '/'))
return NULL;
for (;;) {
size_t a, b;
path += strspn(path, "/");
prefix += strspn(prefix, "/");
if (*prefix == 0)
return (char*) path;
if (*path == 0)
return NULL;
a = strcspn(path, "/");
b = strcspn(prefix, "/");
if (a != b)
return NULL;
if (memcmp(path, prefix, a) != 0)
return NULL;
path += a;
prefix += b;
}
}
int path_compare(const char *a, const char *b) {
int d;
assert(a);
assert(b);
/* A relative path and an absolute path must not compare as equal.
* Which one is sorted before the other does not really matter.
* Here a relative path is ordered before an absolute path. */
d = (a[0] == '/') - (b[0] == '/');
if (d != 0)
return d;
for (;;) {
size_t j, k;
a += strspn(a, "/");
b += strspn(b, "/");
if (*a == 0 && *b == 0)
return 0;
/* Order prefixes first: "/foo" before "/foo/bar" */
if (*a == 0)
return -1;
if (*b == 0)
return 1;
j = strcspn(a, "/");
k = strcspn(b, "/");
/* Alphabetical sort: "/foo/aaa" before "/foo/b" */
d = memcmp(a, b, MIN(j, k));
if (d != 0)
return (d > 0) - (d < 0); /* sign of d */
/* Sort "/foo/a" before "/foo/aaa" */
d = (j > k) - (j < k); /* sign of (j - k) */
if (d != 0)
return d;
a += j;
b += k;
}
}
bool path_equal(const char *a, const char *b) {
return path_compare(a, b) == 0;
}
#if 0 /* NM_IGNORED */
bool path_equal_or_files_same(const char *a, const char *b, int flags) {
return path_equal(a, b) || files_same(a, b, flags) > 0;
}
#endif /* NM_IGNORED */
char* path_join_internal(const char *first, ...) {
char *joined, *q;
const char *p;
va_list ap;
bool slash;
size_t sz;
/* Joins all listed strings until the sentinel and places a "/" between them unless the strings end/begin
* already with one so that it is unnecessary. Note that slashes which are already duplicate won't be
* removed. The string returned is hence always equal to or longer than the sum of the lengths of each
* individual string.
*
* Note: any listed empty string is simply skipped. This can be useful for concatenating strings of which some
* are optional.
*
* Examples:
*
* path_join("foo", "bar") → "foo/bar"
* path_join("foo/", "bar") → "foo/bar"
* path_join("", "foo", "", "bar", "") → "foo/bar" */
sz = strlen_ptr(first);
va_start(ap, first);
while ((p = va_arg(ap, char*)) != POINTER_MAX)
if (!isempty(p))
sz += 1 + strlen(p);
va_end(ap);
joined = new(char, sz + 1);
if (!joined)
return NULL;
if (!isempty(first)) {
q = stpcpy(joined, first);
slash = endswith(first, "/");
} else {
/* Skip empty items */
joined[0] = 0;
q = joined;
slash = true; /* no need to generate a slash anymore */
}
va_start(ap, first);
while ((p = va_arg(ap, char*)) != POINTER_MAX) {
if (isempty(p))
continue;
if (!slash && p[0] != '/')
*(q++) = '/';
q = stpcpy(q, p);
slash = endswith(p, "/");
}
va_end(ap);
return joined;
}
#if 0 /* NM_IGNORED */
static int check_x_access(const char *path, int *ret_fd) {
if (ret_fd) {
_cleanup_close_ int fd = -1;
int r;
/* We need to use O_PATH because there may be executables for which we have only exec
* permissions, but not read (usually suid executables). */
fd = open(path, O_PATH|O_CLOEXEC);
if (fd < 0)
return -errno;
r = access_fd(fd, X_OK);
if (r < 0)
return r;
*ret_fd = TAKE_FD(fd);
} else {
/* Let's optimize things a bit by not opening the file if we don't need the fd. */
if (access(path, X_OK) < 0)
return -errno;
}
return 0;
}
int find_executable_full(const char *name, bool use_path_envvar, char **ret_filename, int *ret_fd) {
int last_error, r;
const char *p = NULL;
assert(name);
if (is_path(name)) {
_cleanup_close_ int fd = -1;
r = check_x_access(name, ret_fd ? &fd : NULL);
if (r < 0)
return r;
if (ret_filename) {
r = path_make_absolute_cwd(name, ret_filename);
if (r < 0)
return r;
}
if (ret_fd)
*ret_fd = TAKE_FD(fd);
return 0;
}
if (use_path_envvar)
/* Plain getenv, not secure_getenv, because we want to actually allow the user to pick the
* binary. */
p = getenv("PATH");
if (!p)
p = DEFAULT_PATH;
last_error = -ENOENT;
/* Resolve a single-component name to a full path */
for (;;) {
_cleanup_free_ char *j = NULL, *element = NULL;
_cleanup_close_ int fd = -1;
r = extract_first_word(&p, &element, ":", EXTRACT_RELAX|EXTRACT_DONT_COALESCE_SEPARATORS);
if (r < 0)
return r;
if (r == 0)
break;
if (!path_is_absolute(element))
continue;
j = path_join(element, name);
if (!j)
return -ENOMEM;
r = check_x_access(j, ret_fd ? &fd : NULL);
if (r >= 0) {
_cleanup_free_ char *with_dash;
with_dash = strjoin(j, "/");
if (!with_dash)
return -ENOMEM;
/* If this passes, it must be a directory, and so should be skipped. */
if (access(with_dash, X_OK) >= 0)
continue;
/* We can't just `continue` inverting this case, since we need to update last_error. */
if (errno == ENOTDIR) {
/* Found it! */
if (ret_filename)
*ret_filename = path_simplify(TAKE_PTR(j), false);
if (ret_fd)
*ret_fd = TAKE_FD(fd);
return 0;
}
}
/* PATH entries which we don't have access to are ignored, as per tradition. */
if (errno != EACCES)
last_error = -errno;
}
return last_error;
}
bool paths_check_timestamp(const char* const* paths, usec_t *timestamp, bool update) {
bool changed = false;
const char* const* i;
assert(timestamp);
if (!paths)
return false;
STRV_FOREACH(i, paths) {
struct stat stats;
usec_t u;
if (stat(*i, &stats) < 0)
continue;
u = timespec_load(&stats.st_mtim);
/* first check */
if (*timestamp >= u)
continue;
log_debug("timestamp of '%s' changed", *i);
/* update timestamp */
if (update) {
*timestamp = u;
changed = true;
} else
return true;
}
return changed;
}
static int executable_is_good(const char *executable) {
_cleanup_free_ char *p = NULL, *d = NULL;
int r;
r = find_executable(executable, &p);
if (r == -ENOENT)
return 0;
if (r < 0)
return r;
/* An fsck that is linked to /bin/true is a non-existent fsck */
r = readlink_malloc(p, &d);
if (r == -EINVAL) /* not a symlink */
return 1;
if (r < 0)
return r;
return !PATH_IN_SET(d, "true"
"/bin/true",
"/usr/bin/true",
"/dev/null");
}
int fsck_exists(const char *fstype) {
const char *checker;
assert(fstype);
if (streq(fstype, "auto"))
return -EINVAL;
checker = strjoina("fsck.", fstype);
return executable_is_good(checker);
}
int parse_path_argument_and_warn(const char *path, bool suppress_root, char **arg) {
char *p;
int r;
/*
* This function is intended to be used in command line
* parsers, to handle paths that are passed in. It makes the
* path absolute, and reduces it to NULL if omitted or
* root (the latter optionally).
*
* NOTE THAT THIS WILL FREE THE PREVIOUS ARGUMENT POINTER ON
* SUCCESS! Hence, do not pass in uninitialized pointers.
*/
if (isempty(path)) {
*arg = mfree(*arg);
return 0;
}
r = path_make_absolute_cwd(path, &p);
if (r < 0)
return log_error_errno(r, "Failed to parse path \"%s\" and make it absolute: %m", path);
path_simplify(p, false);
if (suppress_root && empty_or_root(p))
p = mfree(p);
free_and_replace(*arg, p);
return 0;
}
char* dirname_malloc(const char *path) {
char *d, *dir, *dir2;
assert(path);
d = strdup(path);
if (!d)
return NULL;
dir = dirname(d);
assert(dir);
if (dir == d)
return d;
dir2 = strdup(dir);
free(d);
return dir2;
}
const char *last_path_component(const char *path) {
/* Finds the last component of the path, preserving the optional trailing slash that signifies a directory.
*
* a/b/c → c
* a/b/c/ → c/
* x → x
* x/ → x/
* /y → y
* /y/ → y/
* / → /
* // → /
* /foo/a → a
* /foo/a/ → a/
*
* Also, the empty string is mapped to itself.
*
* This is different than basename(), which returns "" when a trailing slash is present.
*/
unsigned l, k;
if (!path)
return NULL;
l = k = strlen(path);
if (l == 0) /* special case — an empty string */
return path;
while (k > 0 && path[k-1] == '/')
k--;
if (k == 0) /* the root directory */
return path + l - 1;
while (k > 0 && path[k-1] != '/')
k--;
return path + k;
}
int path_extract_filename(const char *p, char **ret) {
_cleanup_free_ char *a = NULL;
const char *c, *e = NULL, *q;
/* Extracts the filename part (i.e. right-most component) from a path, i.e. string that passes
* filename_is_valid(). A wrapper around last_path_component(), but eats up trailing slashes. */
if (!p)
return -EINVAL;
c = last_path_component(p);
for (q = c; *q != 0; q++)
if (*q != '/')
e = q + 1;
if (!e) /* no valid character? */
return -EINVAL;
a = strndup(c, e - c);
if (!a)
return -ENOMEM;
if (!filename_is_valid(a))
return -EINVAL;
*ret = TAKE_PTR(a);
return 0;
}
#endif /* NM_IGNORED */
bool filename_is_valid(const char *p) {
const char *e;
if (isempty(p))
return false;
if (dot_or_dot_dot(p))
return false;
e = strchrnul(p, '/');
if (*e != 0)
return false;
if (e - p > FILENAME_MAX) /* FILENAME_MAX is counted *without* the trailing NUL byte */
return false;
return true;
}
bool path_is_valid(const char *p) {
if (isempty(p))
return false;
if (strlen(p) >= PATH_MAX) /* PATH_MAX is counted *with* the trailing NUL byte */
return false;
return true;
}
bool path_is_normalized(const char *p) {
if (!path_is_valid(p))
return false;
if (dot_or_dot_dot(p))
return false;
if (startswith(p, "../") || endswith(p, "/..") || strstr(p, "/../"))
return false;
if (startswith(p, "./") || endswith(p, "/.") || strstr(p, "/./"))
return false;
if (strstr(p, "//"))
return false;
return true;
}
#if 0 /* NM_IGNORED */
char *file_in_same_dir(const char *path, const char *filename) {
char *e, *ret;
size_t k;
assert(path);
assert(filename);
/* This removes the last component of path and appends
* filename, unless the latter is absolute anyway or the
* former isn't */
if (path_is_absolute(filename))
return strdup(filename);
e = strrchr(path, '/');
if (!e)
return strdup(filename);
k = strlen(filename);
ret = new(char, (e + 1 - path) + k + 1);
if (!ret)
return NULL;
memcpy(mempcpy(ret, path, e + 1 - path), filename, k + 1);
return ret;
}
bool hidden_or_backup_file(const char *filename) {
const char *p;
assert(filename);
if (filename[0] == '.' ||
streq(filename, "lost+found") ||
streq(filename, "aquota.user") ||
streq(filename, "aquota.group") ||
endswith(filename, "~"))
return true;
p = strrchr(filename, '.');
if (!p)
return false;
/* Please, let's not add more entries to the list below. If external projects think it's a good idea to come up
* with always new suffixes and that everybody else should just adjust to that, then it really should be on
* them. Hence, in future, let's not add any more entries. Instead, let's ask those packages to instead adopt
* one of the generic suffixes/prefixes for hidden files or backups, possibly augmented with an additional
* string. Specifically: there's now:
*
* The generic suffixes "~" and ".bak" for backup files
* The generic prefix "." for hidden files
*
* Thus, if a new package manager "foopkg" wants its own set of ".foopkg-new", ".foopkg-old", ".foopkg-dist"
* or so registered, let's refuse that and ask them to use ".foopkg.new", ".foopkg.old" or ".foopkg~" instead.
*/
return STR_IN_SET(p + 1,
"rpmnew",
"rpmsave",
"rpmorig",
"dpkg-old",
"dpkg-new",
"dpkg-tmp",
"dpkg-dist",
"dpkg-bak",
"dpkg-backup",
"dpkg-remove",
"ucf-new",
"ucf-old",
"ucf-dist",
"swp",
"bak",
"old",
"new");
}
bool is_device_path(const char *path) {
/* Returns true on paths that likely refer to a device, either by path in sysfs or to something in /dev */
return PATH_STARTSWITH_SET(path, "/dev/", "/sys/");
}
bool valid_device_node_path(const char *path) {
/* Some superficial checks whether the specified path is a valid device node path, all without looking at the
* actual device node. */
if (!PATH_STARTSWITH_SET(path, "/dev/", "/run/systemd/inaccessible/"))
return false;
if (endswith(path, "/")) /* can't be a device node if it ends in a slash */
return false;
return path_is_normalized(path);
}
bool valid_device_allow_pattern(const char *path) {
assert(path);
/* Like valid_device_node_path(), but also allows full-subsystem expressions, like DeviceAllow= and DeviceDeny=
* accept it */
if (STARTSWITH_SET(path, "block-", "char-"))
return true;
return valid_device_node_path(path);
}
int systemd_installation_has_version(const char *root, unsigned minimal_version) {
const char *pattern;
int r;
/* Try to guess if systemd installation is later than the specified version. This
* is hacky and likely to yield false negatives, particularly if the installation
* is non-standard. False positives should be relatively rare.
*/
NULSTR_FOREACH(pattern,
/* /lib works for systems without usr-merge, and for systems with a sane
* usr-merge, where /lib is a symlink to /usr/lib. /usr/lib is necessary
* for Gentoo which does a merge without making /lib a symlink.
*/
"lib/systemd/libsystemd-shared-*.so\0"
"lib64/systemd/libsystemd-shared-*.so\0"
"usr/lib/systemd/libsystemd-shared-*.so\0"
"usr/lib64/systemd/libsystemd-shared-*.so\0") {
_cleanup_strv_free_ char **names = NULL;
_cleanup_free_ char *path = NULL;
char *c, **name;
path = path_join(root, pattern);
if (!path)
return -ENOMEM;
r = glob_extend(&names, path, 0);
if (r == -ENOENT)
continue;
if (r < 0)
return r;
assert_se(c = endswith(path, "*.so"));
*c = '\0'; /* truncate the glob part */
STRV_FOREACH(name, names) {
/* This is most likely to run only once, hence let's not optimize anything. */
char *t, *t2;
unsigned version;
t = startswith(*name, path);
if (!t)
continue;
t2 = endswith(t, ".so");
if (!t2)
continue;
t2[0] = '\0'; /* truncate the suffix */
r = safe_atou(t, &version);
if (r < 0) {
log_debug_errno(r, "Found libsystemd shared at \"%s.so\", but failed to parse version: %m", *name);
continue;
}
log_debug("Found libsystemd shared at \"%s.so\", version %u (%s).",
*name, version,
version >= minimal_version ? "OK" : "too old");
if (version >= minimal_version)
return true;
}
}
return false;
}
#endif /* NM_IGNORED */
bool dot_or_dot_dot(const char *path) {
if (!path)
return false;
if (path[0] != '.')
return false;
if (path[1] == 0)
return true;
if (path[1] != '.')
return false;
return path[2] == 0;
}
#if 0 /* NM_IGNORED */
bool empty_or_root(const char *root) {
/* For operations relative to some root directory, returns true if the specified root directory is redundant,
* i.e. either / or NULL or the empty string or any equivalent. */
if (!root)
return true;
return root[strspn(root, "/")] == 0;
}
bool path_strv_contains(char **l, const char *path) {
char **i;
STRV_FOREACH(i, l)
if (path_equal(*i, path))
return true;
return false;
}
bool prefixed_path_strv_contains(char **l, const char *path) {
char **i, *j;
STRV_FOREACH(i, l) {
j = *i;
if (*j == '-')
j++;
if (*j == '+')
j++;
if (path_equal(j, path))
return true;
}
return false;
}
bool credential_name_valid(const char *s) {
/* We want that credential names are both valid in filenames (since that's our primary way to pass
* them around) and as fdnames (which is how we might want to pass them around eventually) */
return filename_is_valid(s) && fdname_is_valid(s);
}
#endif /* NM_IGNORED */