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-rw-r--r--src/core/unit.c3
-rw-r--r--src/cryptsetup/cryptsetup-generator.c2
-rw-r--r--src/shared/unit-name.c168
-rw-r--r--src/shared/unit-name.h3
-rw-r--r--src/test/test-unit-name.c51
5 files changed, 115 insertions, 112 deletions
diff --git a/src/core/unit.c b/src/core/unit.c
index 4cffc57793..64e26b7a94 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -2509,7 +2509,8 @@ int unit_add_node_link(Unit *u, const char *what, bool wants) {
if (!is_device_path(what))
return 0;
- if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
+ e = unit_name_from_path(what, ".device");
+ if (!e)
return -ENOMEM;
r = manager_load_unit(u->manager, e, NULL, NULL, &device);
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index 4166f365ea..b86521a712 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -81,7 +81,7 @@ static int create_disk(
noauto = has_option(options, "noauto");
nofail = has_option(options, "nofail");
- n = unit_name_build_escape("systemd-cryptsetup", name, ".service");
+ n = unit_name_from_path_instance("systemd-cryptsetup", name, ".service");
if (!n) {
r = -ENOMEM;
log_error("Failed to allocate unit name.");
diff --git a/src/shared/unit-name.c b/src/shared/unit-name.c
index 8c8e592ab0..4b52f7bc53 100644
--- a/src/shared/unit-name.c
+++ b/src/shared/unit-name.c
@@ -112,7 +112,8 @@ int unit_name_to_instance(const char *n, char **instance) {
assert(instance);
/* Everything past the first @ and before the last . is the instance */
- if (!(p = strchr(n, '@'))) {
+ p = strchr(n, '@');
+ if (!p) {
*instance = NULL;
return 0;
}
@@ -120,7 +121,8 @@ int unit_name_to_instance(const char *n, char **instance) {
assert_se(d = strrchr(n, '.'));
assert(p < d);
- if (!(i = strndup(p+1, d-p-1)))
+ i = strndup(p+1, d-p-1);
+ if (!i)
return -ENOMEM;
*instance = i;
@@ -211,50 +213,6 @@ static char *do_escape(const char *f, char *t) {
return t;
}
-char *unit_name_build_escape(const char *prefix, const char *instance, const char *suffix) {
- char *r, *t;
- size_t a, b, c;
-
- assert(prefix);
- assert(suffix);
-
- /* Takes a arbitrary string for prefix and instance plus a
- * suffix and makes a nice string suitable as unit name of it,
- * escaping all weird chars on the way.
- *
- * / becomes -, and all chars not allowed in a unit name get
- * escaped as \xFF, including \ and -, of course. This
- * escaping is hence reversible.
- *
- * This is primarily useful to make nice unit names from
- * strings, but is actually useful for any kind of string.
- */
-
- a = strlen(prefix);
- c = strlen(suffix);
-
- if (instance) {
- b = strlen(instance);
-
- r = new(char, a*4 + 1 + b*4 + c + 1);
- if (!r)
- return NULL;
-
- t = do_escape(prefix, r);
- *(t++) = '@';
- t = do_escape(instance, t);
- } else {
-
- if (!(r = new(char, a*4 + c + 1)))
- return NULL;
-
- t = do_escape(prefix, r);
- }
-
- strcpy(t, suffix);
- return r;
-}
-
char *unit_name_escape(const char *f) {
char *r, *t;
@@ -301,6 +259,49 @@ char *unit_name_unescape(const char *f) {
return r;
}
+char *unit_name_path_escape(const char *f) {
+ char *p, *e;
+
+ assert(f);
+
+ p = strdup(f);
+ if (!p)
+ return NULL;
+
+ path_kill_slashes(p);
+
+ if (streq(p, "/")) {
+ free(p);
+ return strdup("-");
+ }
+
+ e = unit_name_escape(p[0] == '/' ? p + 1 : p);
+ free(p);
+
+ return e;
+}
+
+char *unit_name_path_unescape(const char *f) {
+ char *e;
+
+ assert(f);
+
+ e = unit_name_unescape(f);
+ if (!e)
+ return NULL;
+
+ if (e[0] != '/') {
+ char *w;
+
+ w = strappend("/", e);
+ free(e);
+
+ return w;
+ }
+
+ return e;
+}
+
bool unit_name_is_template(const char *n) {
const char *p;
@@ -329,14 +330,16 @@ char *unit_name_replace_instance(const char *f, const char *i) {
b = strlen(i);
- if (!(r = new(char, a + 1 + b + strlen(e) + 1)))
+ r = new(char, a + 1 + b + strlen(e) + 1);
+ if (!r)
return NULL;
k = mempcpy(r, f, a + 1);
k = mempcpy(k, i, b);
} else {
- if (!(r = new(char, a + strlen(e) + 1)))
+ r = new(char, a + strlen(e) + 1);
+ if (!r)
return NULL;
k = mempcpy(r, f, a);
@@ -373,20 +376,11 @@ char *unit_name_from_path(const char *path, const char *suffix) {
assert(path);
assert(suffix);
- p = strdup(path);
+ p = unit_name_path_escape(path);
if (!p)
return NULL;
- path_kill_slashes(p);
-
- path = p[0] == '/' ? p + 1 : p;
-
- if (path[0] == 0) {
- free(p);
- return strappend("-", suffix);
- }
-
- r = unit_name_build_escape(path, NULL, suffix);
+ r = strappend(p, suffix);
free(p);
return r;
@@ -395,22 +389,15 @@ char *unit_name_from_path(const char *path, const char *suffix) {
char *unit_name_from_path_instance(const char *prefix, const char *path, const char *suffix) {
char *p, *r;
+ assert(prefix);
assert(path);
assert(suffix);
- if (!(p = strdup(path)))
+ p = unit_name_path_escape(path);
+ if (!p)
return NULL;
- path_kill_slashes(p);
-
- path = p[0] == '/' ? p + 1 : p;
-
- if (path[0] == 0) {
- free(p);
- return unit_name_build_escape(prefix, "-", suffix);
- }
-
- r = unit_name_build_escape(prefix, path, suffix);
+ r = join(prefix, "@", p, suffix, NULL);
free(p);
return r;
@@ -425,52 +412,17 @@ char *unit_name_to_path(const char *name) {
if (!w)
return NULL;
- e = unit_name_unescape(w);
+ e = unit_name_path_unescape(w);
free(w);
- if (!e)
- return NULL;
-
- if (e[0] != '/') {
- w = strappend("/", e);
- free(e);
-
- if (!w)
- return NULL;
-
- return w;
- }
-
- return e;
-}
-
-char *unit_name_path_unescape(const char *f) {
- char *e;
-
- assert(f);
-
- e = unit_name_unescape(f);
- if (!e)
- return NULL;
-
- if (e[0] != '/') {
- char *w;
-
- w = strappend("/", e);
- free(e);
-
- if (!w)
- return NULL;
-
- return w;
- }
-
return e;
}
char *unit_dbus_path_from_name(const char *name) {
char *e, *p;
+ assert(name);
+
e = bus_path_escape(name);
if (!e)
return NULL;
diff --git a/src/shared/unit-name.h b/src/shared/unit-name.h
index 64bb248907..13665c5980 100644
--- a/src/shared/unit-name.h
+++ b/src/shared/unit-name.h
@@ -37,11 +37,10 @@ bool unit_instance_is_valid(const char *i);
char *unit_name_change_suffix(const char *n, const char *suffix);
char *unit_name_build(const char *prefix, const char *instance, const char *suffix);
-char *unit_name_build_escape(const char *prefix, const char *instance, const char *suffix);
char *unit_name_escape(const char *f);
char *unit_name_unescape(const char *f);
-
+char *unit_name_path_escape(const char *f);
char *unit_name_path_unescape(const char *f);
bool unit_name_is_template(const char *n);
diff --git a/src/test/test-unit-name.c b/src/test/test-unit-name.c
index 9d636afe15..392e358ac2 100644
--- a/src/test/test-unit-name.c
+++ b/src/test/test-unit-name.c
@@ -29,6 +29,57 @@
int main(int argc, char* argv[]) {
char *t, *k;
+ t = unit_name_from_path("/waldo", ".mount");
+ puts(t);
+ k = unit_name_to_path(t);
+ puts(k);
+ free(k);
+ free(t);
+
+ t = unit_name_from_path("/waldo/quuix", ".mount");
+ puts(t);
+ k = unit_name_to_path(t);
+ puts(k);
+ free(k);
+ free(t);
+
+ t = unit_name_from_path("/waldo/quuix/", ".mount");
+ puts(t);
+ k = unit_name_to_path(t);
+ puts(k);
+ free(k);
+ free(t);
+
+ t = unit_name_from_path("/", ".mount");
+ puts(t);
+ k = unit_name_to_path(t);
+ puts(k);
+ free(k);
+ free(t);
+
+ t = unit_name_from_path("///", ".mount");
+ puts(t);
+ k = unit_name_to_path(t);
+ puts(k);
+ free(k);
+ free(t);
+
+ t = unit_name_from_path_instance("waldo", "/waldo", ".mount");
+ puts(t);
+ free(t);
+
+ t = unit_name_from_path_instance("waldo", "/waldo////quuix////", ".mount");
+ puts(t);
+ free(t);
+
+ t = unit_name_from_path_instance("waldo", "/", ".mount");
+ puts(t);
+ free(t);
+
+ t = unit_name_from_path_instance("wa--ldo", "/--", ".mount");
+ puts(t);
+ free(t);
+
assert_se(t = unit_name_mangle("/home"));
assert_se(k = unit_name_mangle(t));
puts(t);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 18:42:16 +0000