[dovecot-cvs] dovecot/src/lib compat.c,1.13,1.14

[cras at procontrol.fi]

Update of /home/cvs/dovecot/src/lib
In directory danu:/tmp/cvs-serv27219

Modified Files:
	compat.c 
Log Message:
pread/pwrite doesn't move file offset. make our compat functions restore it



Index: compat.c
===================================================================
RCS file: /home/cvs/dovecot/src/lib/compat.c,v
retrieving revision 1.13
retrieving revision 1.14
diff -u -d -r1.13 -r1.14
--- compat.c	3 Oct 2003 14:50:48 -0000	1.13
+++ compat.c	5 Oct 2003 18:01:57 -0000	1.14
@@ -99,15 +99,33 @@
 #ifndef HAVE_PWRITE
 ssize_t my_pread(int fd, void *buf, size_t count, off_t offset)
 {
+	ssize_t ret;
+
 	if (lseek(fd, offset, SEEK_SET) < 0)
 		return -1;
-	return read(fd, buf, count);
+
+	ret = read(fd, buf, count);
+	if (ret < 0)
+		return -1;
+
+	if (lseek(fd, offset, SEEK_SET) < 0)
+		return -1;
+	return ret;
 }
 
 ssize_t my_pwrite(int fd, const void *buf, size_t count, off_t offset)
 {
+	ssize_t ret;
+
 	if (lseek(fd, offset, SEEK_SET) < 0)
 		return -1;
-	return write(fd, buf, count);
+
+	ret = write(fd, buf, count);
+	if (ret < 0)
+		return -1;
+
+	if (lseek(fd, offset, SEEK_SET) < 0)
+		return -1;
+	return ret;
 }
 #endif