remove built-in /etc/passwd /etc/group parser

[elogind.git] / udev_utils.c

diff --git a/udev_utils.c b/udev_utils.c
index 003d7bded93cec5f68838514619ea9fd43897ae2..b198892c012f2ae8f95356845066336f92c1ba42 100644 (file)
--- a/udev_utils.c
+++ b/udev_utils.c
@@ -28,6 +28,9 @@
 #include <ctype.h>
 #include <dirent.h>
 #include <syslog.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
 #include <sys/utsname.h>
 
 #include "udev.h"
@@ -161,3 +164,40 @@ int add_matching_files(struct list_head *name_list, const char *dirname, const c
        closedir(dir);
        return 0;
 }
+
+uid_t lookup_user(const char *user)
+{
+       struct passwd *pw;
+       uid_t uid = 0;
+
+       errno = 0;
+       pw = getpwnam(user);
+       if (pw == NULL) {
+               if (errno == 0 || errno == ENOENT || errno == ESRCH)
+                       err("specified user unknown '%s'", user);
+               else
+                       err("error resolving user '%s': %s", user, strerror(errno));
+       } else
+               uid = pw->pw_uid;
+
+       return uid;
+}
+
+extern gid_t lookup_group(const char *group)
+{
+       struct group *gr;
+       gid_t gid = 0;
+
+       errno = 0;
+       gr = getgrnam(group);
+       if (gr == NULL) {
+               if (errno == 0 || errno == ENOENT || errno == ESRCH)
+                       err("specified group unknown '%s'", group);
+               else
+                       err("error resolving group '%s': %s", group, strerror(errno));
+       } else
+               gid = gr->gr_gid;
+
+       return gid;
+}
+