falso
/
qemu-irix
mirror of https://github.com/n64decomp/qemu-irix.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hw/9pfs: use O_NOFOLLOW for mapped readlink operation 

With mapped security models like mapped-xattr and mapped-file, we save the
symlink target as file contents. Now if we ever expose a normal directory
with mapped security model and find real symlinks in export path, never
follow them and return proper error.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
(cherry picked from commit aed858ce10)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2013-05-20 17:28:29 +05:30 committed by Michael Roth
parent eabdf85d86
commit a6fc2cd986
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/9pfs/virtio-9p-local.c
View File

@ -284,7 +284,7 @@ static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
if ((fs_ctx->export_flags & V9FS_SM_MAPPED) ||
(fs_ctx->export_flags & V9FS_SM_MAPPED_FILE)) {
int fd;
fd = open(rpath(fs_ctx, path, buffer), O_RDONLY);
fd = open(rpath(fs_ctx, path, buffer), O_RDONLY | O_NOFOLLOW);
if (fd == -1) {
return -1;
}