systemd-run: make sure --nice=, --uid=, --gid=, --setenv= also work in --scope mode

[elogind.git] / src / shared / unit-name.c

diff --git a/src/shared/unit-name.c b/src/shared/unit-name.c
index a809713595f69b10849f97c9a0e7637c9f77ac59..2924c473df4674a28691ed018689ccc8400532be 100644 (file)
--- a/src/shared/unit-name.c
+++ b/src/shared/unit-name.c
@@ -24,26 +24,29 @@
 #include <assert.h>
 
 #include "path-util.h"
+#include "bus-label.h"
 #include "util.h"
 #include "unit-name.h"
+#include "def.h"
 
 #define VALID_CHARS                             \
-        "0123456789"                            \
-        "abcdefghijklmnopqrstuvwxyz"            \
-        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"            \
+        DIGITS LETTERS                          \
         ":-_.\\"
 
 static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
         [UNIT_SERVICE] = "service",
         [UNIT_SOCKET] = "socket",
+        [UNIT_BUSNAME] = "busname",
         [UNIT_TARGET] = "target",
+        [UNIT_SNAPSHOT] = "snapshot",
         [UNIT_DEVICE] = "device",
         [UNIT_MOUNT] = "mount",
         [UNIT_AUTOMOUNT] = "automount",
-        [UNIT_SNAPSHOT] = "snapshot",
-        [UNIT_TIMER] = "timer",
         [UNIT_SWAP] = "swap",
+        [UNIT_TIMER] = "timer",
         [UNIT_PATH] = "path",
+        [UNIT_SLICE] = "slice",
+        [UNIT_SCOPE] = "scope"
 };
 
 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
@@ -51,6 +54,7 @@ DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
 static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
         [UNIT_STUB] = "stub",
         [UNIT_LOADED] = "loaded",
+        [UNIT_NOT_FOUND] = "not-found",
         [UNIT_ERROR] = "error",
         [UNIT_MERGED] = "merged",
         [UNIT_MASKED] = "masked"
@@ -58,7 +62,7 @@ static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
 
 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
 
-bool unit_name_is_valid(const char *n, bool template_ok) {
+bool unit_name_is_valid(const char *n, enum template_valid template_ok) {
         const char *e, *i, *at;
 
         /* Valid formats:
@@ -68,6 +72,7 @@ bool unit_name_is_valid(const char *n, bool template_ok) {
          */
 
         assert(n);
+        assert(IN_SET(template_ok, TEMPLATE_VALID, TEMPLATE_INVALID));
 
         if (strlen(n) >= UNIT_NAME_MAX)
                 return false;
@@ -92,7 +97,7 @@ bool unit_name_is_valid(const char *n, bool template_ok) {
                 if (at == n)
                         return false;
 
-                if (!template_ok && at+1 == e)
+                if (!template_ok == TEMPLATE_VALID && at+1 == e)
                         return false;
         }
 
@@ -182,8 +187,9 @@ char *unit_name_change_suffix(const char *n, const char *suffix) {
         size_t a, b;
 
         assert(n);
-        assert(unit_name_is_valid(n, true));
+        assert(unit_name_is_valid(n, TEMPLATE_VALID));
         assert(suffix);
+        assert(suffix[0] == '.');
 
         assert_se(e = strrchr(n, '.'));
         a = e - n;
@@ -298,7 +304,7 @@ char *unit_name_path_escape(const char *f) {
 
         path_kill_slashes(p);
 
-        if (streq(p, "/")) {
+        if (streq(p, "/") || streq(p, "")) {
                 free(p);
                 return strdup("-");
         }
@@ -401,7 +407,6 @@ char *unit_name_template(const char *f) {
 
         strcpy(mempcpy(r, f, a), e);
         return r;
-
 }
 
 char *unit_name_from_path(const char *path, const char *suffix) {
@@ -438,7 +443,7 @@ char *unit_name_from_path_instance(const char *prefix, const char *path, const c
 }
 
 char *unit_name_to_path(const char *name) {
-        char *w, *e;
+        _cleanup_free_ char *w = NULL;
 
         assert(name);
 
@@ -446,35 +451,49 @@ char *unit_name_to_path(const char *name) {
         if (!w)
                 return NULL;
 
-        e = unit_name_path_unescape(w);
-        free(w);
-
-        return e;
+        return unit_name_path_unescape(w);
 }
 
 char *unit_dbus_path_from_name(const char *name) {
-        char *e, *p;
+        _cleanup_free_ char *e = NULL;
 
         assert(name);
 
-        e = bus_path_escape(name);
+        e = bus_label_escape(name);
         if (!e)
                 return NULL;
 
-        p = strappend("/org/freedesktop/systemd1/unit/", e);
-        free(e);
+        return strappend("/org/freedesktop/systemd1/unit/", e);
+}
+
+int unit_name_from_dbus_path(const char *path, char **name) {
+        const char *e;
+        char *n;
+
+        e = startswith(path, "/org/freedesktop/systemd1/unit/");
+        if (!e)
+                return -EINVAL;
+
+        n = bus_label_unescape(e);
+        if (!n)
+                return -ENOMEM;
 
-        return p;
+        *name = n;
+        return 0;
 }
 
-char *unit_name_mangle(const char *name) {
+
+/**
+ *  Try to turn a string that might not be a unit name into a
+ *  sensible unit name.
+ */
+char *unit_name_mangle(const char *name, enum unit_name_mangle allow_globs) {
         char *r, *t;
         const char *f;
+        const char* valid_chars = allow_globs == MANGLE_GLOB ? "@" VALID_CHARS "[]!-*?" : "@" VALID_CHARS;
 
         assert(name);
-
-        /* Try to turn a string that might not be a unit name into a
-         * sensible unit name. */
+        assert(IN_SET(allow_globs, MANGLE_GLOB, MANGLE_NOGLOB));
 
         if (is_device_path(name))
                 return unit_name_from_path(name, ".device");
@@ -492,7 +511,7 @@ char *unit_name_mangle(const char *name) {
         for (f = name, t = r; *f; f++) {
                 if (*f == '/')
                         *(t++) = '-';
-                else if (!strchr("@" VALID_CHARS, *f))
+                else if (!strchr(valid_chars, *f))
                         t = do_escape_char(*f, t);
                 else
                         *(t++) = *f;
@@ -506,16 +525,20 @@ char *unit_name_mangle(const char *name) {
         return r;
 }
 
-char *snapshot_name_mangle(const char *name) {
+
+/**
+ *  Similar to unit_name_mangle(), but is called when we know
+ *  that this is about a specific unit type.
+ */
+char *unit_name_mangle_with_suffix(const char *name, enum unit_name_mangle allow_globs, const char *suffix) {
         char *r, *t;
         const char *f;
 
         assert(name);
+        assert(suffix);
+        assert(suffix[0] == '.');
 
-        /* Similar to unit_name_mangle(), but is called when we know
-         * that this is about snapshot units. */
-
-        r = new(char, strlen(name) * 4 + 1 + sizeof(".snapshot")-1);
+        r = new(char, strlen(name) * 4 + strlen(suffix) + 1);
         if (!r)
                 return NULL;
 
@@ -528,8 +551,8 @@ char *snapshot_name_mangle(const char *name) {
                         *(t++) = *f;
         }
 
-        if (!endswith(name, ".snapshot"))
-                strcpy(t, ".snapshot");
+        if (!endswith(name, suffix))
+                strcpy(t, suffix);
         else
                 *t = 0;
 
@@ -547,3 +570,30 @@ UnitType unit_name_to_type(const char *n) {
 
         return unit_type_from_string(e + 1);
 }
+
+int build_subslice(const char *slice, const char*name, char **subslice) {
+        char *ret;
+
+        assert(slice);
+        assert(name);
+        assert(subslice);
+
+        if (streq(slice, "-.slice"))
+                ret = strappend(name, ".slice");
+        else {
+                char *e;
+
+                e = endswith(slice, ".slice");
+                if (!e)
+                        return -EINVAL;
+
+                ret = new(char, (e - slice) + 1 + strlen(name) + 6 + 1);
+                if (!ret)
+                        return -ENOMEM;
+
+                stpcpy(stpcpy(stpcpy(mempcpy(ret, slice, e - slice), "-"), name), ".slice");
+        }
+
+        *subslice = ret;
+        return 0;
+}