From: Michal Moskal <michal@moskal.me>
Date: Mon, 13 Aug 2001 11:51:04 +0000 (+0000)
Subject: - added making backup of updated files
X-Git-Tag: setup_2_4_4~44
X-Git-Url: http://git.pld-linux.org/?p=projects%2Fsetup.git;a=commitdiff_plain;h=f88ff4b9fec41a3d019b0b74a6ba4b0d9d7e1233

- added making backup of updated files

Changed files:
    joinpasswd.c -> 1.2
---

diff --git a/joinpasswd.c b/joinpasswd.c
index 4225885..80e4c98 100644
--- a/joinpasswd.c
+++ b/joinpasswd.c
@@ -70,6 +70,8 @@
 #define FILE3 "/etc/group"
 
 #define SUFFIX ".rpmnew"
+/* maybe "-" or sth? */
+#define BACKUP ".old"
 
 /* #define SILENT */
 
@@ -118,7 +120,7 @@ int exist(char *id, int id_len, char *ptr, int sz)
 	return 0;
 }
 
-int join(const char *old_name, const char *new_name)
+int join(const char *old_name, const char *new_name, const char *backup_name)
 {
 	char *old, *new, *id;
 	int i, fd;
@@ -131,7 +133,13 @@ int join(const char *old_name, const char *new_name)
 	old = map_file(old_name, &old_sz);
 	if (old == NULL)
 		fatal("cannot mmap old");
-
+	
+	fd = open(backup_name, O_WRONLY|O_CREAT|O_TRUNC, 0600);
+	if (fd < 0)
+		fatal("cannot make backup");
+	write(fd, old, old_sz);
+	close(fd);
+	
 #ifndef SILENT
 	eputs("marging contest of `");
 	eputs(old_name);