sd-device: get_driver - remember if a device does not have a driver

[elogind.git] / src / libelogind / sd-device / device-private.c

diff --git a/src/libelogind/sd-device/device-private.c b/src/libelogind/sd-device/device-private.c
index 81b0b6dde68cfc3e0abd45ab3f2727f3e856fe6f..2e604332467d048e8c182ce6f1900b37f433c7e2 100644 (file)
--- a/src/libelogind/sd-device/device-private.c
+++ b/src/libelogind/sd-device/device-private.c
@@ -366,7 +366,7 @@ static int device_set_devgid(sd_device *device, const char *gid) {
         return 0;
 }
 
-static int device_ammend(sd_device *device, const char *key, const char *value) {
+static int device_amend(sd_device *device, const char *key, const char *value) {
         int r;
 
         assert(device);
@@ -419,32 +419,32 @@ static int device_ammend(sd_device *device, const char *key, const char *value)
                 if (r < 0)
                         return log_debug_errno(r, "sd-device: could not set devgid to '%s': %m", value);
         } else if (streq(key, "DEVLINKS")) {
-                char *devlinks, *next;
+                const char *word, *state;
+                size_t l;
 
-                devlinks = strdupa(value);
+                FOREACH_WORD(word, l, value, state) {
+                        char devlink[l + 1];
 
-                while ((next = strchr(devlinks, ' '))) {
-                        next[0] = '\0';
+                        strncpy(devlink, word, l);
+                        devlink[l] = '\0';
 
-                        r = device_add_devlink(device, devlinks);
+                        r = device_add_devlink(device, devlink);
                         if (r < 0)
-                                return log_debug_errno(r, "sd-device: could not add devlink '%s': %m", devlinks);
-
-                        devlinks = next + 1;
+                                return log_debug_errno(r, "sd-device: could not add devlink '%s': %m", devlink);
                 }
         } else if (streq(key, "TAGS")) {
-                char *tags, *next;
+                const char *word, *state;
+                size_t l;
 
-                tags = strdupa(value);
+                FOREACH_WORD_SEPARATOR(word, l, value, ":", state) {
+                        char tag[l + 1];
 
-                while ((next = strchr(tags, ':'))) {
-                        next[0] = '\0';
+                        (void)strncpy(tag, word, l);
+                        tag[l] = '\0';
 
-                        r = device_add_tag(device, tags);
+                        r = device_add_tag(device, tag);
                         if (r < 0)
-                                return log_debug_errno(r, "sd-device: could not add tag '%s': %m", tags);
-
-                        tags = next + 1;
+                                return log_debug_errno(r, "sd-device: could not add tag '%s': %m", tag);
                 }
         } else {
                 r = device_add_property_internal(device, key, value);
@@ -509,7 +509,7 @@ static int device_append(sd_device *device, char *key, const char **_major, cons
                                 return -EINVAL;
                 }
 
-                r = device_ammend(device, key, value);
+                r = device_amend(device, key, value);
                 if (r < 0)
                         return r;
         }
@@ -636,13 +636,16 @@ int device_new_from_nulstr(sd_device **ret, uint8_t *nulstr, size_t len) {
 
 static int device_update_properties_bufs(sd_device *device) {
         const char *val, *prop;
-        char **buf_strv = NULL;
-        uint8_t *buf_nulstr = NULL;
-        size_t allocated_nulstr = 0, allocated_strv = 0;
-        size_t nulstr_len = 0, strv_size = 0;
+        _cleanup_free_ char **buf_strv = NULL;
+        _cleanup_free_ uint8_t *buf_nulstr = NULL;
+        size_t allocated_nulstr = 0;
+        size_t nulstr_len = 0, num = 0, i = 0;
 
         assert(device);
 
+        if (!device->properties_buf_outdated)
+                return 0;
+
         FOREACH_DEVICE_PROPERTY(device, prop, val) {
                 size_t len = 0;
 
@@ -652,20 +655,29 @@ static int device_update_properties_bufs(sd_device *device) {
                 if (!buf_nulstr)
                         return -ENOMEM;
 
-                buf_strv = GREEDY_REALLOC0(buf_strv, allocated_strv, strv_size + 2);
-                if (!buf_strv)
-                        return -ENOMEM;
-
-                buf_strv[++ strv_size] = (char *)&buf_nulstr[nulstr_len];
                 strscpyl((char *)buf_nulstr + nulstr_len, len + 1, prop, "=", val, NULL);
                 nulstr_len += len + 1;
+                ++num;
+        }
+
+        /* build buf_strv from buf_nulstr */
+        buf_strv = new0(char *, num + 1);
+        if (!buf_strv)
+                return -ENOMEM;
+
+        NULSTR_FOREACH(val, (char*) buf_nulstr) {
+                buf_strv[i] = (char *) val;
+                assert(i < num);
+                i++;
         }
 
         free(device->properties_nulstr);
-        free(device->properties_strv);
         device->properties_nulstr = buf_nulstr;
+        buf_nulstr = NULL;
         device->properties_nulstr_len = nulstr_len;
+        free(device->properties_strv);
         device->properties_strv = buf_strv;
+        buf_strv = NULL;
 
         device->properties_buf_outdated = false;
 
@@ -679,11 +691,9 @@ int device_get_properties_nulstr(sd_device *device, const uint8_t **nulstr, size
         assert(nulstr);
         assert(len);
 
-        if (device->properties_buf_outdated) {
-                r = device_update_properties_bufs(device);
-                if (r < 0)
-                        return r;
-        }
+        r = device_update_properties_bufs(device);
+        if (r < 0)
+                return r;
 
         *nulstr = device->properties_nulstr;
         *len = device->properties_nulstr_len;
@@ -1099,3 +1109,9 @@ int device_delete_db(sd_device *device) {
 
         return 0;
 }
+
+int device_read_db_force(sd_device *device) {
+        assert(device);
+
+        return device_read_db_aux(device, true);
+}