[Btrfs-devel] [PATCH] btrfs-progs: fix a buffer overflow
Jan Engelhardt
jengelh at computergmbh.de
Fri Jan 18 13:00:02 PST 2008
Fix a buffer overflow.
Signed-off-by: Jan Engelhardt <jengelh at computergmbh.de>
---
utils.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: btrfs-progs-0.11/utils.c
===================================================================
--- btrfs-progs-0.11.orig/utils.c
+++ btrfs-progs-0.11/utils.c
@@ -63,7 +63,7 @@ int make_btrfs(int fd, u64 blocks[4], u6
num_bytes = (num_bytes / sectorsize) * sectorsize;
uuid_generate(super.fsid);
btrfs_set_super_bytenr(&super, blocks[0]);
- strcpy((char *)(&super.magic), BTRFS_MAGIC);
+ strncpy((char *)&super.magic, BTRFS_MAGIC, sizeof(super.magic));
btrfs_set_super_generation(&super, 1);
btrfs_set_super_root(&super, blocks[1]);
btrfs_set_super_total_bytes(&super, num_bytes);
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