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-rw-r--r--hw/9pfs/9p.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 385269ea0a..51c6f9883b 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -1497,6 +1497,11 @@ static void v9fs_lcreate(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
fidp = get_fid(pdu, dfid);
if (fidp == NULL) {
err = -ENOENT;
@@ -2096,6 +2101,11 @@ static void v9fs_create(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
fidp = get_fid(pdu, fid);
if (fidp == NULL) {
err = -EINVAL;
@@ -2266,6 +2276,11 @@ static void v9fs_symlink(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
dfidp = get_fid(pdu, dfid);
if (dfidp == NULL) {
err = -EINVAL;
@@ -2345,6 +2360,11 @@ static void v9fs_link(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
dfidp = get_fid(pdu, dfid);
if (dfidp == NULL) {
err = -ENOENT;
@@ -2433,6 +2453,16 @@ static void v9fs_unlinkat(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data)) {
+ err = -EINVAL;
+ goto out_nofid;
+ }
+
+ if (!strcmp("..", name.data)) {
+ err = -ENOTEMPTY;
+ goto out_nofid;
+ }
+
dfidp = get_fid(pdu, dfid);
if (dfidp == NULL) {
err = -EINVAL;
@@ -2545,6 +2575,11 @@ static void v9fs_rename(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EISDIR;
+ goto out_nofid;
+ }
+
fidp = get_fid(pdu, fid);
if (fidp == NULL) {
err = -ENOENT;
@@ -2662,6 +2697,12 @@ static void v9fs_renameat(void *opaque)
goto out_err;
}
+ if (!strcmp(".", old_name.data) || !strcmp("..", old_name.data) ||
+ !strcmp(".", new_name.data) || !strcmp("..", new_name.data)) {
+ err = -EISDIR;
+ goto out_err;
+ }
+
v9fs_path_write_lock(s);
err = v9fs_complete_renameat(pdu, olddirfid,
&old_name, newdirfid, &new_name);
@@ -2877,6 +2918,11 @@ static void v9fs_mknod(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
fidp = get_fid(pdu, fid);
if (fidp == NULL) {
err = -ENOENT;
@@ -3033,6 +3079,11 @@ static void v9fs_mkdir(void *opaque)
goto out_nofid;
}
+ if (!strcmp(".", name.data) || !strcmp("..", name.data)) {
+ err = -EEXIST;
+ goto out_nofid;
+ }
+
fidp = get_fid(pdu, fid);
if (fidp == NULL) {
err = -ENOENT;