X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_utils.c;h=b198892c012f2ae8f95356845066336f92c1ba42;hp=a37c4dfe7492f2927b0f7d1660e791ec32ba5533;hb=2f64aa4056835231ed297a79d39d5416e0045d0c;hpb=1aa1e24848903d11780db1ade355be73ad61a937

diff --git a/udev_utils.c b/udev_utils.c
index a37c4dfe7..b198892c0 100644
--- 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"
@@ -53,7 +56,7 @@ int log_priority(const char *priority)
 	return 0;
 }
 
-int name_list_add(struct list_head *name_list, const char *name, int sort)
+char *name_list_add(struct list_head *name_list, const char *name, int sort)
 {
 	struct name_entry *loop_name;
 	struct name_entry *new_name;
@@ -62,7 +65,7 @@ int name_list_add(struct list_head *name_list, const char *name, int sort)
 		/* avoid doubles */
 		if (strcmp(loop_name->name, name) == 0) {
 			dbg("'%s' is already in the list", name);
-			return 0;
+			return loop_name->name;
 		}
 	}
 
@@ -73,19 +76,17 @@ int name_list_add(struct list_head *name_list, const char *name, int sort)
 		}
 
 	new_name = malloc(sizeof(struct name_entry));
-	if (new_name == NULL) {
-		dbg("error malloc");
-		return -ENOMEM;
-	}
+	if (new_name == NULL)
+		return NULL;
 
 	strlcpy(new_name->name, name, sizeof(new_name->name));
 	dbg("adding '%s'", new_name->name);
 	list_add_tail(&new_name->node, &loop_name->node);
 
-	return 0;
+	return new_name->name;
 }
 
-int name_list_key_add(struct list_head *name_list, const char *key, const char *value)
+char *name_list_key_add(struct list_head *name_list, const char *key, const char *value)
 {
 	struct name_entry *loop_name;
 	struct name_entry *new_name;
@@ -95,22 +96,20 @@ int name_list_key_add(struct list_head *name_list, const char *key, const char *
 			dbg("key already present '%s', replace it", loop_name->name);
 			snprintf(loop_name->name, sizeof(loop_name->name), "%s=%s", key, value);
 			loop_name->name[sizeof(loop_name->name)-1] = '\0';
-			return 0;
+			return loop_name->name;
 		}
 	}
 
 	new_name = malloc(sizeof(struct name_entry));
-	if (new_name == NULL) {
-		dbg("error malloc");
-		return -ENOMEM;
-	}
+	if (new_name == NULL)
+		return NULL;
 
 	snprintf(new_name->name, sizeof(new_name->name), "%s=%s", key, value);
 	new_name->name[sizeof(new_name->name)-1] = '\0';
 	dbg("adding '%s'", new_name->name);
 	list_add_tail(&new_name->node, &loop_name->node);
 
-	return 0;
+	return new_name->name;
 }
 
 void name_list_cleanup(struct list_head *name_list)
@@ -165,3 +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;
+}
+