unset variable with ENV{VAR}=""

[elogind.git] / udev_utils.c

diff --git a/udev_utils.c b/udev_utils.c
index b198892c012f2ae8f95356845066336f92c1ba42..6d646b0ee6f1f51f4c0f0969d6da2f2b4b6dc5e5 100644 (file)
--- a/udev_utils.c
+++ b/udev_utils.c
@@ -1,6 +1,4 @@
 /*
- * udev_utils.c - generic stuff used by udev
- *
  * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
  *
  *     This program is free software; you can redistribute it and/or modify it
@@ -14,7 +12,7 @@
  * 
  *     You should have received a copy of the GNU General Public License along
  *     with this program; if not, write to the Free Software Foundation, Inc.,
- *     675 Mass Ave, Cambridge, MA 02139, USA.
+ *     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
  */
 
@@ -112,6 +110,26 @@ char *name_list_key_add(struct list_head *name_list, const char *key, const char
        return new_name->name;
 }
 
+int name_list_key_remove(struct list_head *name_list, const char *key)
+{
+       struct name_entry *name_loop;
+       struct name_entry *temp_loop;
+       size_t keylen = strlen(key);
+       int retval = 0;
+
+       list_for_each_entry_safe(name_loop, temp_loop, name_list, node) {
+               if (strncmp(name_loop->name, key, keylen) != 0)
+                       continue;
+               if (name_loop->name[keylen] != '=')
+                       continue;
+               list_del(&name_loop->node);
+               free(name_loop);
+               retval = 1;
+               break;
+       }
+       return retval;
+}
+
 void name_list_cleanup(struct list_head *name_list)
 {
        struct name_entry *name_loop;
@@ -128,7 +146,6 @@ int add_matching_files(struct list_head *name_list, const char *dirname, const c
 {
        struct dirent *ent;
        DIR *dir;
-       char *ext;
        char filename[PATH_SIZE];
 
        dbg("open directory '%s'", dirname);
@@ -147,14 +164,16 @@ int add_matching_files(struct list_head *name_list, const char *dirname, const c
                        continue;
 
                /* look for file matching with specified suffix */
-               ext = strrchr(ent->d_name, '.');
-               if (ext == NULL)
-                       continue;
-
-               if (strcmp(ext, suffix) != 0)
-                       continue;
-
-               dbg("put file '%s/%s' in list", dirname, ent->d_name);
+               if (suffix != NULL) {
+                       const char *ext;
+
+                       ext = strrchr(ent->d_name, '.');
+                       if (ext == NULL)
+                               continue;
+                       if (strcmp(ext, suffix) != 0)
+                               continue;
+               }
+               dbg("put file '%s/%s' into list", dirname, ent->d_name);
 
                snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
                filename[sizeof(filename)-1] = '\0';
@@ -174,7 +193,7 @@ uid_t lookup_user(const char *user)
        pw = getpwnam(user);
        if (pw == NULL) {
                if (errno == 0 || errno == ENOENT || errno == ESRCH)
-                       err("specified user unknown '%s'", user);
+                       err("specified user '%s' unknown", user);
                else
                        err("error resolving user '%s': %s", user, strerror(errno));
        } else
@@ -192,7 +211,7 @@ extern gid_t lookup_group(const char *group)
        gr = getgrnam(group);
        if (gr == NULL) {
                if (errno == 0 || errno == ENOENT || errno == ESRCH)
-                       err("specified group unknown '%s'", group);
+                       err("specified group '%s' unknown", group);
                else
                        err("error resolving group '%s': %s", group, strerror(errno));
        } else