From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Date: Wed, 22 Oct 2008 14:13:08 +0000
Subject: [PATCH 1/4] Use re-entrant variants of getpwnam and getgrnam
Message-Id: <48FF34F4.2030901@tuffmail.co.uk>
List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>

diff --git a/udev/udev-util.c b/udev/udev-util.c
index 76445bb..204c096 100644
--- a/udev/udev-util.c
+++ b/udev/udev-util.c
@@ -126,13 +126,16 @@ int util_unlink_secure(struct udev *udev, const char *filename)
 
 uid_t util_lookup_user(struct udev *udev, const char *user)
 {
+	int buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
+	char buf[buflen];
+	struct passwd pwbuf;
 	struct passwd *pw;
 	uid_t uid = 0;
 
 	if (strcmp(user, "root") = 0)
 		return 0;
 	errno = 0;
-	pw = getpwnam(user);
+	getpwnam_r(user, &pwbuf, buf, buflen, &pw);
 	if (pw = NULL) {
 		if (errno = 0 || errno = ENOENT || errno = ESRCH)
 			err(udev, "specified user '%s' unknown\n", user);
@@ -140,18 +143,22 @@ uid_t util_lookup_user(struct udev *udev, const char *user)
 			err(udev, "error resolving user '%s': %m\n", user);
 	} else
 		uid = pw->pw_uid;
+
 	return uid;
 }
 
 extern gid_t util_lookup_group(struct udev *udev, const char *group)
 {
+	int buflen = sysconf(_SC_GETGR_R_SIZE_MAX);
+	char buf[buflen];
+	struct group grbuf;
 	struct group *gr;
 	gid_t gid = 0;
 
 	if (strcmp(group, "root") = 0)
 		return 0;
 	errno = 0;
-	gr = getgrnam(group);
+	getgrnam_r(group, &grbuf, buf, buflen, &gr);
 	if (gr = NULL) {
 		if (errno = 0 || errno = ENOENT || errno = ESRCH)
 			err(udev, "specified group '%s' unknown\n", group);