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Merge pull request #29193 from keszybz/path-util-adjustment

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Make unit mangling follow paths
This commit is contained in:
Daan De Meyer 2023-09-29 11:33:12 +02:00 committed by GitHub
commit 4444564a95
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GPG Key ID: 4AEE18F83AFDEB23
18 changed files with 356 additions and 177 deletions
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12
man/systemd-escape.xml
View File

@ -90,10 +90,14 @@
<term><option>--path</option></term>
<term><option>-p</option></term>
<listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This eliminates
leading, trailing or duplicate <literal>/</literal> characters and rejects <literal>.</literal> and
<literal>..</literal> path components. This is particularly useful for generating strings suitable for
unescaping with the <literal>%f</literal> specifier in unit files, see
<listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This
simplifies the path (leading, trailing, and duplicate <literal>/</literal> characters are removed,
no-op path <literal>.</literal> components are removed, and for absolute paths, leading
<literal>..</literal> components are removed). After the simplification, the path must not contain
<literal>..</literal>.</para>
<para>This is particularly useful for generating strings suitable for unescaping with the
<literal>%f</literal> specifier in unit files, see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
</para>

21
src/basic/cgroup-util.c
View File

@ -978,6 +978,7 @@ int cg_is_empty_recursive(const char *controller, const char *path) {
int cg_split_spec(const char *spec, char **ret_controller, char **ret_path) {
_cleanup_free_ char *controller = NULL, *path = NULL;
int r;
assert(spec);
@ -986,11 +987,9 @@ int cg_split_spec(const char *spec, char **ret_controller, char **ret_path) {
return -EINVAL;
if (ret_path) {
path = strdup(spec);
if (!path)
return -ENOMEM;
path_simplify(path);
r = path_simplify_alloc(spec, &path);
if (r < 0)
return r;
}
} else {
@ -1037,22 +1036,14 @@ int cg_split_spec(const char *spec, char **ret_controller, char **ret_path) {
int cg_mangle_path(const char *path, char **result) {
_cleanup_free_ char *c = NULL, *p = NULL;
char *t;
int r;
assert(path);
assert(result);
/* First, check if it already is a filesystem path */
if (path_startswith(path, "/sys/fs/cgroup")) {
t = strdup(path);
if (!t)
return -ENOMEM;
*result = path_simplify(t);
return 0;
}
if (path_startswith(path, "/sys/fs/cgroup"))
return path_simplify_alloc(path, result);
/* Otherwise, treat it as cg spec */
r = cg_split_spec(path, &c, &p);

22
src/basic/fileio.c
View File

@ -1110,6 +1110,7 @@ int search_and_fopen(
char **ret_path) {
_cleanup_strv_free_ char **copy = NULL;
int r;
assert(filename);
assert(mode);
@ -1123,13 +1124,9 @@ int search_and_fopen(
return -errno;
if (ret_path) {
char *p;
p = strdup(filename);
if (!p)
return -ENOMEM;
*ret_path = path_simplify(p);
r = path_simplify_alloc(filename, ret_path);
if (r < 0)
return r;
}
*ret = TAKE_PTR(f);
@ -1152,6 +1149,7 @@ int search_and_fopen_nulstr(
char **ret_path) {
_cleanup_strv_free_ char **s = NULL;
int r;
if (path_is_absolute(filename)) {
_cleanup_fclose_ FILE *f = NULL;
@ -1161,13 +1159,9 @@ int search_and_fopen_nulstr(
return -errno;
if (ret_path) {
char *p;
p = strdup(filename);
if (!p)
return -ENOMEM;
*ret_path = path_simplify(p);
r = path_simplify_alloc(filename, ret_path);
if (r < 0)
return r;
}
*ret = TAKE_PTR(f);

62
src/basic/path-util.c
View File

@ -40,7 +40,7 @@ int path_split_and_make_absolute(const char *p, char ***ret) {
return r;
}
char *path_make_absolute(const char *p, const char *prefix) {
char* path_make_absolute(const char *p, const char *prefix) {
assert(p);
/* Makes every item in the list an absolute path by prepending
@ -132,11 +132,9 @@ int path_make_relative(const char *from, const char *to, char **ret) {
return -ENOMEM;
} else {
/* 'to' is inside of 'from'. */
result = strdup(t);
if (!result)
return -ENOMEM;
path_simplify(result);
r = path_simplify_alloc(t, &result);
if (r < 0)
return r;
if (!path_is_valid(result))
return -EINVAL;
@ -252,7 +250,7 @@ int path_strv_make_absolute_cwd(char **l) {
return 0;
}
char **path_strv_resolve(char **l, const char *root) {
char** path_strv_resolve(char **l, const char *root) {
unsigned k = 0;
bool enomem = false;
int r;
@ -333,7 +331,7 @@ char **path_strv_resolve(char **l, const char *root) {
return l;
}
char **path_strv_resolve_uniq(char **l, const char *root) {
char** path_strv_resolve_uniq(char **l, const char *root) {
if (strv_isempty(l))
return l;
@ -344,9 +342,9 @@ char **path_strv_resolve_uniq(char **l, const char *root) {
return strv_uniq(l);
}
char *path_simplify_full(char *path, PathSimplifyFlags flags) {
bool add_slash = false, keep_trailing_slash;
char *f = ASSERT_PTR(path);
char* path_simplify_full(char *path, PathSimplifyFlags flags) {
bool add_slash = false, keep_trailing_slash, absolute, beginning = true;
char *f = path;
int r;
/* Removes redundant inner and trailing slashes. Also removes unnecessary dots.
@ -354,6 +352,8 @@ char *path_simplify_full(char *path, PathSimplifyFlags flags) {
*
* ///foo//./bar/. becomes /foo/bar
* .//./foo//./bar/. becomes foo/bar
* /../foo/bar becomes /foo/bar
* /../foo/bar/.. becomes /foo/bar/..
*/
if (isempty(path))
@ -361,8 +361,8 @@ char *path_simplify_full(char *path, PathSimplifyFlags flags) {
keep_trailing_slash = FLAGS_SET(flags, PATH_SIMPLIFY_KEEP_TRAILING_SLASH) && endswith(path, "/");
if (path_is_absolute(path))
f++;
absolute = path_is_absolute(path);
f += absolute; /* Keep leading /, if present. */
for (const char *p = f;;) {
const char *e;
@ -371,11 +371,17 @@ char *path_simplify_full(char *path, PathSimplifyFlags flags) {
if (r == 0)
break;
if (r > 0 && absolute && beginning && path_startswith(e, ".."))
/* If we're at the beginning of an absolute path, we can safely skip ".." */
continue;
beginning = false;
if (add_slash)
*f++ = '/';
if (r < 0) {
/* if path is invalid, then refuse to simplify remaining part. */
/* if path is invalid, then refuse to simplify the remaining part. */
memmove(f, p, strlen(p) + 1);
return path;
}
@ -397,7 +403,7 @@ char *path_simplify_full(char *path, PathSimplifyFlags flags) {
return path;
}
char *path_startswith_full(const char *path, const char *prefix, bool accept_dot_dot) {
char* path_startswith_full(const char *path, const char *prefix, bool accept_dot_dot) {
assert(path);
assert(prefix);
@ -657,7 +663,14 @@ static int find_executable_impl(const char *name, const char *root, char **ret_f
return 0;
}
int find_executable_full(const char *name, const char *root, char **exec_search_path, bool use_path_envvar, char **ret_filename, int *ret_fd) {
int find_executable_full(
const char *name,
const char *root,
char **exec_search_path,
bool use_path_envvar,
char **ret_filename,
int *ret_fd) {
int last_error = -ENOENT, r = 0;
const char *p = NULL;
@ -807,7 +820,7 @@ int fsck_exists_for_fstype(const char *fstype) {
return executable_is_good(checker);
}
static const char *skip_slash_or_dot(const char *p) {
static const char* skip_slash_or_dot(const char *p) {
for (; !isempty(p); p++) {
if (*p == '/')
continue;
@ -891,7 +904,7 @@ int path_find_first_component(const char **p, bool accept_dot_dot, const char **
return len;
}
static const char *skip_slash_or_dot_backward(const char *path, const char *q) {
static const char* skip_slash_or_dot_backward(const char *path, const char *q) {
assert(path);
assert(!q || q >= path);
@ -1000,7 +1013,7 @@ int path_find_last_component(const char *path, bool accept_dot_dot, const char *
return len;
}
const char *last_path_component(const char *path) {
const char* last_path_component(const char *path) {
/* Finds the last component of the path, preserving the optional trailing slash that signifies a directory.
*
@ -1272,9 +1285,16 @@ bool hidden_or_backup_file(const char *filename) {
bool is_device_path(const char *path) {
/* Returns true for paths that likely refer to a device, either by path in sysfs or to something in
* /dev. */
* /dev. This accepts any path that starts with /dev/ or /sys/ and has something after that prefix.
* It does not actually resolve the path.
*
* Examples:
* /dev/sda, /dev/sda/foo, /sys/class, /dev/.., /sys/.., /./dev/foo → yes.
* /../dev/sda, /dev, /sys, /usr/path, /usr/../dev/sda → no.
*/
return PATH_STARTSWITH_SET(path, "/dev/", "/sys/");
const char *p = PATH_STARTSWITH_SET(ASSERT_PTR(path), "/dev/", "/sys/");
return !isempty(p);
}
bool valid_device_node_path(const char *path) {

24
src/basic/path-util.h
View File

@ -53,7 +53,7 @@ int safe_getcwd(char **ret);
int path_make_absolute_cwd(const char *p, char **ret);
int path_make_relative(const char *from, const char *to, char **ret);
int path_make_relative_parent(const char *from_child, const char *to, char **ret);
char *path_startswith_full(const char *path, const char *prefix, bool accept_dot_dot) _pure_;
char* path_startswith_full(const char *path, const char *prefix, bool accept_dot_dot) _pure_;
static inline char* path_startswith(const char *path, const char *prefix) {
return path_startswith_full(path, prefix, true);
}
@ -80,11 +80,27 @@ typedef enum PathSimplifyFlags {
PATH_SIMPLIFY_KEEP_TRAILING_SLASH = 1 << 0,
} PathSimplifyFlags;
char *path_simplify_full(char *path, PathSimplifyFlags flags);
char* path_simplify_full(char *path, PathSimplifyFlags flags);
static inline char* path_simplify(char *path) {
return path_simplify_full(path, 0);
}
static inline int path_simplify_alloc(const char *path, char **ret) {
assert(ret);
if (!path) {
*ret = NULL;
return 0;
}
char *t = strdup(path);
if (!t)
return -ENOMEM;
*ret = path_simplify(t);
return 0;
}
static inline bool path_equal_ptr(const char *a, const char *b) {
return !!a == !!b && (!a || path_equal(a, b));
}
@ -159,7 +175,7 @@ int fsck_exists_for_fstype(const char *fstype);
int path_find_first_component(const char **p, bool accept_dot_dot, const char **ret);
int path_find_last_component(const char *path, bool accept_dot_dot, const char **next, const char **ret);
const char *last_path_component(const char *path);
const char* last_path_component(const char *path);
int path_extract_filename(const char *path, char **ret);
int path_extract_directory(const char *path, char **ret);
@ -196,7 +212,7 @@ static inline const char *skip_dev_prefix(const char *p) {
}
bool empty_or_root(const char *path);
static inline const char *empty_to_root(const char *path) {
static inline const char* empty_to_root(const char *path) {
return isempty(path) ? "/" : path;
}

47
src/basic/unit-name.c
View File

@ -389,15 +389,14 @@ int unit_name_unescape(const char *f, char **ret) {
int unit_name_path_escape(const char *f, char **ret) {
_cleanup_free_ char *p = NULL;
char *s;
int r;
assert(f);
assert(ret);
p = strdup(f);
if (!p)
return -ENOMEM;
path_simplify(p);
r = path_simplify_alloc(f, &p);
if (r < 0)
return r;
if (empty_or_root(p))
s = strdup("-");
@ -701,9 +700,15 @@ static bool do_escape_mangle(const char *f, bool allow_globs, char *t) {
*
* If @allow_globs, globs characters are preserved. Otherwise, they are escaped.
*/
int unit_name_mangle_with_suffix(const char *name, const char *operation, UnitNameMangle flags, const char *suffix, char **ret) {
int unit_name_mangle_with_suffix(
const char *name,
const char *operation,
UnitNameMangle flags,
const char *suffix,
char **ret) {
_cleanup_free_ char *s = NULL;
bool mangled, suggest_escape = true;
bool mangled, suggest_escape = true, warn = flags & UNIT_NAME_MANGLE_WARN;
int r;
assert(name);
@ -724,22 +729,28 @@ int unit_name_mangle_with_suffix(const char *name, const char *operation, UnitNa
if (string_is_glob(name) && in_charset(name, VALID_CHARS_GLOB)) {
if (flags & UNIT_NAME_MANGLE_GLOB)
goto good;
log_full(flags & UNIT_NAME_MANGLE_WARN ? LOG_NOTICE : LOG_DEBUG,
log_full(warn ? LOG_NOTICE : LOG_DEBUG,
"Glob pattern passed%s%s, but globs are not supported for this.",
operation ? " " : "", strempty(operation));
suggest_escape = false;
}
if (is_device_path(name)) {
r = unit_name_from_path(name, ".device", ret);
if (r >= 0)
return 1;
if (r != -EINVAL)
return r;
}
if (path_is_absolute(name)) {
r = unit_name_from_path(name, ".mount", ret);
_cleanup_free_ char *n = NULL;
r = path_simplify_alloc(name, &n);
if (r < 0)
return r;
if (is_device_path(n)) {
r = unit_name_from_path(n, ".device", ret);
if (r >= 0)
return 1;
if (r != -EINVAL)
return r;
}
r = unit_name_from_path(n, ".mount", ret);
if (r >= 0)
return 1;
if (r != -EINVAL)
@ -752,7 +763,7 @@ int unit_name_mangle_with_suffix(const char *name, const char *operation, UnitNa
mangled = do_escape_mangle(name, flags & UNIT_NAME_MANGLE_GLOB, s);
if (mangled)
log_full(flags & UNIT_NAME_MANGLE_WARN ? LOG_NOTICE : LOG_DEBUG,
log_full(warn ? LOG_NOTICE : LOG_DEBUG,
"Invalid unit name \"%s\" escaped as \"%s\"%s.",
name, s,
suggest_escape ? " (maybe you should use systemd-escape?)" : "");

16
src/basic/user-util.c
View File

@ -589,7 +589,6 @@ int getgroups_alloc(gid_t** gids) {
int get_home_dir(char **ret) {
struct passwd *p;
const char *e;
char *h;
uid_t u;
assert(ret);
@ -622,18 +621,12 @@ int get_home_dir(char **ret) {
return -EINVAL;
found:
h = strdup(e);
if (!h)
return -ENOMEM;
*ret = path_simplify(h);
return 0;
return path_simplify_alloc(e, ret);
}
int get_shell(char **ret) {
struct passwd *p;
const char *e;
char *s;
uid_t u;
assert(ret);
@ -665,12 +658,7 @@ int get_shell(char **ret) {
return -EINVAL;
found:
s = strdup(e);
if (!s)
return -ENOMEM;
*ret = path_simplify(s);
return 0;
return path_simplify_alloc(e, ret);
}
int reset_uid_gid(void) {

21
src/core/dbus-path.c
View File

@ -97,22 +97,21 @@ static int bus_path_set_transient_property(
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
_cleanup_free_ char *k = NULL;
PathSpec *s;
k = strdup(path);
if (!k)
return -ENOMEM;
r = path_simplify_alloc(path, &k);
if (r < 0)
return r;
path_simplify(k);
s = new0(PathSpec, 1);
PathSpec *s = new(PathSpec, 1);
if (!s)
return -ENOMEM;
s->unit = u;
s->path = TAKE_PTR(k);
s->type = t;
s->inotify_fd = -EBADF;
*s = (PathSpec) {
.unit = u,
.path = TAKE_PTR(k),
.type = t,
.inotify_fd = -EBADF,
};
LIST_PREPEND(spec, p->specs, s);

8
src/core/dbus-socket.c
View File

@ -391,11 +391,9 @@ static int bus_socket_set_transient_property(
if (!path_is_absolute(a) || !path_is_valid(a))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid socket path: %s", a);
p->path = strdup(a);
if (!p->path)
return log_oom();
path_simplify(p->path);
r = path_simplify_alloc(a, &p->path);
if (r < 0)
return r;
} else if (streq(t, "Netlink")) {
r = socket_address_parse_netlink(&p->address, a);

4
src/delta/delta.c
View File

@ -611,9 +611,7 @@ static int run(int argc, char *argv[]) {
pager_open(arg_pager_flags);
if (optind < argc) {
int i;
for (i = optind; i < argc; i++) {
for (int i = optind; i < argc; i++) {
path_simplify(argv[i]);
k = process_suffix_chop(argv[i]);

8
src/libsystemd/sd-device/sd-device.c
View File

@ -232,11 +232,9 @@ int device_set_syspath(sd_device *device, const char *_syspath, bool verify) {
"sd-device: Syspath '%s' is not a subdirectory of /sys",
_syspath);
syspath = strdup(_syspath);
if (!syspath)
return log_oom_debug();
path_simplify(syspath);
r = path_simplify_alloc(_syspath, &syspath);
if (r < 0)
return r;
}
assert_se(devpath = startswith(syspath, "/sys"));

41
src/mount/mount-tool.c
View File

@ -83,30 +83,26 @@ STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_automount_property, strv_freep);
static int parse_where(const char *input, char **ret_where) {
_cleanup_free_ char *where = NULL;
int r;
assert(input);
assert(ret_where);
if (arg_transport == BUS_TRANSPORT_LOCAL) {
r = chase(input, NULL, CHASE_NONEXISTENT, &where, NULL);
r = chase(input, NULL, CHASE_NONEXISTENT, ret_where, NULL);
if (r < 0)
return log_error_errno(r, "Failed to make path %s absolute: %m", input);
} else {
where = strdup(input);
if (!where)
return log_oom();
path_simplify(where);
if (!path_is_absolute(where))
if (!path_is_absolute(input))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Path must be absolute when operating remotely: %s",
where);
input);
r = path_simplify_alloc(input, ret_where);
if (r < 0)
return log_error_errno(r, "Failed to simplify path %s: %m", input);
}
*ret_where = TAKE_PTR(where);
return 0;
}
@ -441,17 +437,16 @@ static int parse_argv(int argc, char *argv[]) {
r = chase(u, NULL, 0, &arg_mount_what, NULL);
if (r < 0)
return log_error_errno(r, "Failed to make path %s absolute: %m", u);
} else {
arg_mount_what = strdup(argv[optind]);
if (!arg_mount_what)
return log_oom();
path_simplify(arg_mount_what);
if (!path_is_absolute(arg_mount_what))
if (!path_is_absolute(argv[optind]))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Path must be absolute when operating remotely: %s",
arg_mount_what);
argv[optind]);
r = path_simplify_alloc(argv[optind], &arg_mount_what);
if (r < 0)
return log_error_errno(r, "Failed to simplify path: %m");
}
}
@ -1054,11 +1049,9 @@ static int action_umount(
for (int i = optind; i < argc; i++) {
_cleanup_free_ char *p = NULL;
p = strdup(argv[i]);
if (!p)
return log_oom();
path_simplify(p);
r = path_simplify_alloc(argv[i], &p);
if (r < 0)
return r;
r = stop_mounts(bus, p);
if (r < 0)

19
src/portable/portable.c
View File

@ -838,6 +838,7 @@ static int portable_changes_add(
_cleanup_free_ char *p = NULL, *s = NULL;
PortableChange *c;
int r;
assert(path);
assert(!changes == !n_changes);
@ -855,19 +856,13 @@ static int portable_changes_add(
return -ENOMEM;
*changes = c;
p = strdup(path);
if (!p)
return -ENOMEM;
r = path_simplify_alloc(path, &p);
if (r < 0)
return r;
path_simplify(p);
if (source) {
s = strdup(source);
if (!s)
return -ENOMEM;
path_simplify(s);
}
r = path_simplify_alloc(source, &s);
if (r < 0)
return r;
c[(*n_changes)++] = (PortableChange) {
.type_or_errno = type_or_errno,

21
src/shared/install.c
View File

@ -285,6 +285,7 @@ InstallChangeType install_changes_add(
_cleanup_free_ char *p = NULL, *s = NULL;
InstallChange *c;
int r;
assert(!changes == !n_changes);
assert(INSTALL_CHANGE_TYPE_VALID(type));
@ -303,21 +304,13 @@ InstallChangeType install_changes_add(
return -ENOMEM;
*changes = c;
if (path) {
p = strdup(path);
if (!p)
return -ENOMEM;
r = path_simplify_alloc(path, &p);
if (r < 0)
return r;
path_simplify(p);
}
if (source) {
s = strdup(source);
if (!s)
return -ENOMEM;
path_simplify(s);
}
r = path_simplify_alloc(source, &s);
if (r < 0)
return r;
c[(*n_changes)++] = (InstallChange) {
.type = type,

140
src/test/test-path-util.c
View File

@ -26,10 +26,6 @@ TEST(path) {
assert_se(path_is_absolute("/"));
assert_se(!path_is_absolute("./"));
assert_se(is_path("/dir"));
assert_se(is_path("a/b"));
assert_se(!is_path("."));
assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
assert_se(streq(basename("/aa///.file"), ".file"));
assert_se(streq(basename("/aa///file..."), "file..."));
@ -48,6 +44,100 @@ TEST(path) {
assert_se(!path_equal_ptr(NULL, "/a"));
}
TEST(is_path) {
assert_se(!is_path("foo"));
assert_se(!is_path("dos.ext"));
assert_se( is_path("/dir"));
assert_se( is_path("a/b"));
assert_se( is_path("a/b.ext"));
assert_se(!is_path("."));
assert_se(!is_path(""));
assert_se(!is_path(".."));
assert_se( is_path("/dev"));
assert_se( is_path("/./dev"));
assert_se( is_path("/./dev/."));
assert_se( is_path("/./dev."));
assert_se( is_path("//dev"));
assert_se( is_path("///dev"));
assert_se( is_path("/dev/"));
assert_se( is_path("///dev/"));
assert_se( is_path("/./dev/"));
assert_se( is_path("/../dev/"));
assert_se( is_path("/dev/sda"));
assert_se( is_path("/dev/sda5"));
assert_se( is_path("/dev/sda5b3"));
assert_se( is_path("/dev/sda5b3/idontexit"));
assert_se( is_path("/../dev/sda"));
assert_se( is_path("/../../dev/sda5"));
assert_se( is_path("/../../../dev/sda5b3"));
assert_se( is_path("/.././.././dev/sda5b3/idontexit"));
assert_se( is_path("/sys"));
assert_se( is_path("/sys/"));
assert_se( is_path("/./sys"));
assert_se( is_path("/./sys/."));
assert_se( is_path("/./sys."));
assert_se( is_path("/sys/what"));
assert_se( is_path("/sys/something/.."));
assert_se( is_path("/sys/something/../"));
assert_se( is_path("/sys////"));
assert_se( is_path("/sys////."));
assert_se( is_path("/sys/.."));
assert_se( is_path("/sys/../"));
assert_se( is_path("/usr/../dev/sda"));
}
TEST(is_device_path) {
assert_se(!is_device_path("foo"));
assert_se(!is_device_path("dos.ext"));
assert_se(!is_device_path("/dir"));
assert_se(!is_device_path("a/b"));
assert_se(!is_device_path("a/b.ext"));
assert_se(!is_device_path("."));
assert_se(!is_device_path(""));
assert_se(!is_device_path(".."));
assert_se(!is_device_path("/dev"));
assert_se(!is_device_path("/./dev"));
assert_se(!is_device_path("/./dev/."));
assert_se(!is_device_path("/./dev."));
assert_se( is_device_path("/./dev/foo"));
assert_se( is_device_path("/./dev/./foo"));
assert_se(!is_device_path("/./dev./foo"));
assert_se(!is_device_path("//dev"));
assert_se(!is_device_path("///dev"));
assert_se(!is_device_path("/dev/"));
assert_se(!is_device_path("///dev/"));
assert_se(!is_device_path("/./dev/"));
assert_se(!is_device_path("/../dev/"));
assert_se( is_device_path("/dev/sda"));
assert_se( is_device_path("/dev/sda5"));
assert_se( is_device_path("/dev/sda5b3"));
assert_se( is_device_path("/dev/sda5b3/idontexit"));
assert_se(!is_device_path("/../dev/sda"));
assert_se(!is_device_path("/../../dev/sda5"));
assert_se(!is_device_path("/../../../dev/sda5b3"));
assert_se(!is_device_path("/.././.././dev/sda5b3/idontexit"));
assert_se(!is_device_path("/sys"));
assert_se(!is_device_path("/sys/"));
assert_se(!is_device_path("/./sys"));
assert_se(!is_device_path("/./sys/."));
assert_se(!is_device_path("/./sys."));
assert_se( is_device_path("/./sys/foo"));
assert_se( is_device_path("/./sys/./foo"));
assert_se(!is_device_path("/./sys./foo"));
assert_se( is_device_path("/sys/what"));
assert_se( is_device_path("/sys/something/.."));
assert_se( is_device_path("/sys/something/../"));
assert_se(!is_device_path("/sys////"));
assert_se(!is_device_path("/sys////."));
assert_se( is_device_path("/sys/.."));
assert_se( is_device_path("/sys/../"));
assert_se(!is_device_path("/usr/../dev/sda"));
}
static void test_path_simplify_one(const char *in, const char *out, PathSimplifyFlags flags) {
char *p;
@ -68,7 +158,7 @@ TEST(path_simplify) {
test_path_simplify_one("///", "/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("///.//", "/", 0);
test_path_simplify_one("///.//.///", "/", 0);
test_path_simplify_one("////.././///../.", "/../..", 0);
test_path_simplify_one("////.././///../.", "/", 0);
test_path_simplify_one(".", ".", 0);
test_path_simplify_one("./", ".", 0);
test_path_simplify_one("./", "./", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
@ -84,6 +174,46 @@ TEST(path_simplify) {
"../aaa/.bbb/../c./d.dd/..eeee/..", 0);
test_path_simplify_one("abc///", "abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc///", "/abc", 0);
test_path_simplify_one("/../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc///..", "/abc/..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc///../", "/abc/../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../abc///../", "/abc/..", 0);
test_path_simplify_one("/../../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../../abc///", "/abc", 0);
test_path_simplify_one("/../../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/../../abc///../../", "/abc/../..", 0);
test_path_simplify_one("/.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.././../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.././../abc///", "/abc", 0);
test_path_simplify_one("/.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.././../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.././../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.././../abc///../../", "/abc/../..", 0);
test_path_simplify_one("/./.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/./.././../abc///", "/abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/./.././../abc///", "/abc", 0);
test_path_simplify_one("/./.././../abc", "/abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/./.././../abc///../..", "/abc/../..", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/./.././../abc///../../", "/abc/../../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/./.././../abc///../../", "/abc/../..", 0);
test_path_simplify_one("/.../abc", "/.../abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.../abc///", "/.../abc/", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.../abc///", "/.../abc", 0);
test_path_simplify_one("/.../abc", "/.../abc", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.../abc///...", "/.../abc/...", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.../abc///.../", "/.../abc/.../", PATH_SIMPLIFY_KEEP_TRAILING_SLASH);
test_path_simplify_one("/.../abc///.../", "/.../abc/...", 0);
memset(foo, 'a', sizeof(foo) -1);
char_array_0(foo);

48
src/test/test-unit-name.c
View File

@ -201,8 +201,12 @@ TEST(unit_name_to_path) {
static void test_unit_name_mangle_one(bool allow_globs, const char *pattern, const char *expect, int ret) {
_cleanup_free_ char *t = NULL;
int r;
assert_se(unit_name_mangle(pattern, (allow_globs * UNIT_NAME_MANGLE_GLOB) | UNIT_NAME_MANGLE_WARN, &t) == ret);
r = unit_name_mangle(pattern, (allow_globs * UNIT_NAME_MANGLE_GLOB) | UNIT_NAME_MANGLE_WARN, &t);
log_debug("%s: %s -> %d, %s", __func__, pattern, r, strnull(t));
assert_se(r == ret);
puts(strna(t));
assert_se(streq_ptr(t, expect));
@ -234,6 +238,48 @@ TEST(unit_name_mangle) {
test_unit_name_mangle_one(true, "ü*", "\\xc3\\xbc*", 1);
}
static void test_unit_name_mangle_with_suffix_one(const char *arg, int expected, const char *expected_name) {
_cleanup_free_ char *s = NULL;
int r;
r = unit_name_mangle_with_suffix(arg, NULL, 0, ".service", &s);
log_debug("%s: %s -> %d, %s", __func__, arg, r, strnull(s));
assert_se(r == expected);
assert_se(streq_ptr(s, expected_name));
}
TEST(unit_name_mangle_with_suffix) {
test_unit_name_mangle_with_suffix_one("", -EINVAL, NULL);
test_unit_name_mangle_with_suffix_one("/dev", 1, "dev.mount");
test_unit_name_mangle_with_suffix_one("/../dev", 1, "dev.mount");
test_unit_name_mangle_with_suffix_one("/../dev/.", 1, "dev.mount");
/* We don't skip the last '..', and it makes this an invalid device or mount name */
test_unit_name_mangle_with_suffix_one("/.././dev/..", 1, "-..-.-dev-...service");
test_unit_name_mangle_with_suffix_one("/.././dev", 1, "dev.mount");
test_unit_name_mangle_with_suffix_one("/./.././../dev/", 1, "dev.mount");
test_unit_name_mangle_with_suffix_one("/dev/sda", 1, "dev-sda.device");
test_unit_name_mangle_with_suffix_one("/dev/sda5", 1, "dev-sda5.device");
test_unit_name_mangle_with_suffix_one("/sys", 1, "sys.mount");
test_unit_name_mangle_with_suffix_one("/../sys", 1, "sys.mount");
test_unit_name_mangle_with_suffix_one("/../sys/.", 1, "sys.mount");
/* We don't skip the last '..', and it makes this an invalid device or mount name */
test_unit_name_mangle_with_suffix_one("/.././sys/..", 1, "-..-.-sys-...service");
test_unit_name_mangle_with_suffix_one("/.././sys", 1, "sys.mount");
test_unit_name_mangle_with_suffix_one("/./.././../sys/", 1, "sys.mount");
test_unit_name_mangle_with_suffix_one("/proc", 1, "proc.mount");
test_unit_name_mangle_with_suffix_one("/../proc", 1, "proc.mount");
test_unit_name_mangle_with_suffix_one("/../proc/.", 1, "proc.mount");
/* We don't skip the last '..', and it makes this an invalid device or mount name */
test_unit_name_mangle_with_suffix_one("/.././proc/..", 1, "-..-.-proc-...service");
test_unit_name_mangle_with_suffix_one("/.././proc", 1, "proc.mount");
test_unit_name_mangle_with_suffix_one("/./.././../proc/", 1, "proc.mount");
}
TEST_RET(unit_printf, .sd_booted = true) {
_cleanup_free_ char
*architecture, *os_image_version, *boot_id = NULL, *os_build_id,

9
src/udev/udev-node.c
View File

@ -331,15 +331,14 @@ static int stack_directory_get_name(const char *slink, char **ret) {
_cleanup_free_ char *s = NULL, *dirname = NULL;
char name_enc[NAME_MAX+1];
const char *name;
int r;
assert(slink);
assert(ret);
s = strdup(slink);
if (!s)
return -ENOMEM;
path_simplify(s);
r = path_simplify_alloc(slink, &s);
if (r < 0)
return r;
if (!path_is_normalized(s))
return -EINVAL;

10
test/units/testsuite-74.escape.sh
View File

@ -65,13 +65,19 @@ assert_eq "$(systemd-escape --unescape --instance 'mount-my-stuff@-this-is-where
assert_eq "$(systemd-escape --unescape --instance --path 'mount-my-stuff@this-is-where-my-stuff-is-\x20with\x20spaces\x20though\x20.service')" \
'/this/is/where/my/stuff/is/ with spaces though '
# --path
# --path, reversible cases
check_escape / '-' --path
check_escape '/hello/world' 'hello-world' --path
check_escape '/mnt/smb/おにぎり' \
'mnt-smb-\xe3\x81\x8a\xe3\x81\xab\xe3\x81\x8e\xe3\x82\x8a' \
--path
# --path, non-reversible cases
assert_eq "$(systemd-escape --path ///////////////)" '-'
assert_eq "$(systemd-escape --path /..)" '-'
assert_eq "$(systemd-escape --path /../.././../.././)" '-'
assert_eq "$(systemd-escape --path /../.././../.././foo)" 'foo'
# --mangle
assert_eq "$(systemd-escape --mangle 'hello-world')" 'hello-world.service'
assert_eq "$(systemd-escape --mangle '/mount/this')" 'mount-this.mount'
@ -94,7 +100,7 @@ assert_eq "$(systemd-escape --mangle 'trailing-whitespace.mount ')" 'trailing-wh
(! systemd-escape --instance 'hello@hello.service')
(! systemd-escape --instance --template=hello@.service 'hello@hello.service')
(! systemd-escape --unescape --instance --path 'mount-my-stuff@-this-is-where-my-stuff-is-\x20with\x20spaces\x20though\x20.service')
(! systemd-escape --path '/../hello')
(! systemd-escape --path '/../hello/..')
(! systemd-escape --path '.')
(! systemd-escape --path '..')
(! systemd-escape --path "$(set +x; printf '%0.sa' {0..256})")