Add EXT2_FLAG_EXCLUSIVE to the ext2fs library.
This flag when specified to ext2fs_open or ext2fs_initialize indicates
that the application wants the io_channel to be opened in exclusive mode.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c
index 83eea72..05ba8c8 100644
--- a/lib/ext2fs/initialize.c
+++ b/lib/ext2fs/initialize.c
@@ -104,6 +104,7 @@
dgrp_t i;
blk_t numblocks;
int rsv_gdt;
+ int io_flags;
char *buf;
if (!param || !param->s_blocks_count)
@@ -120,7 +121,10 @@
#ifdef WORDS_BIGENDIAN
fs->flags |= EXT2_FLAG_SWAP_BYTES;
#endif
- retval = manager->open(name, IO_FLAG_RW, &fs->io);
+ io_flags = IO_FLAG_RW;
+ if (flags & EXT2_FLAG_EXCLUSIVE)
+ io_flags |= IO_FLAG_EXCLUSIVE;
+ retval = manager->open(name, io_flags, &fs->io);
if (retval)
goto cleanup;
fs->image_io = fs->io;