sdcard: Force file names to lower case in order to provide case insensitivity

Change-Id: I2cdb12c7e296e1c28b66e32c7037dce060eecd67
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 86d7693..4f5a6b0 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -442,6 +442,13 @@ void lookup_entry(struct fuse *fuse, struct node *node,
     fuse_reply(fuse, unique, &out, sizeof(out));
 }
 
+static void normalize_name(char *name)
+{
+    char ch;
+    while ((ch = *name) != 0)
+        *name++ = tolower(ch);
+}
+
 void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *data, unsigned len)
 {
     struct node *node;
@@ -465,6 +472,7 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
 
     switch (hdr->opcode) {
     case FUSE_LOOKUP: { /* bytez[] -> entry_out */
+        normalize_name((char*) data);
         TRACE("LOOKUP %llx %s\n", hdr->nodeid, (char*) data);
         lookup_entry(fuse, node, (char*) data, hdr->unique);
         return;
@@ -523,6 +531,9 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
         char *path, buffer[PATH_BUFFER_SIZE];
         char *name = ((char*) data) + sizeof(*req);
         int res;
+
+        normalize_name(name);
+
         TRACE("MKNOD %s @ %llx\n", name, hdr->nodeid);
         path = node_get_path(node, buffer, name);
 
@@ -541,6 +552,9 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
         char *path, buffer[PATH_BUFFER_SIZE];
         char *name = ((char*) data) + sizeof(*req);
         int res;
+
+        normalize_name(name);
+
         TRACE("MKDIR %s @ %llx 0%o\n", name, hdr->nodeid, req->mode);
         path = node_get_path(node, buffer, name);
 
@@ -556,6 +570,7 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
     case FUSE_UNLINK: { /* bytez[] -> */
         char *path, buffer[PATH_BUFFER_SIZE];
         int res;
+        normalize_name((char*) data);
         TRACE("UNLINK %s @ %llx\n", (char*) data, hdr->nodeid);
         path = node_get_path(node, buffer, (char*) data);
         res = unlink(path);
@@ -565,6 +580,7 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
     case FUSE_RMDIR: { /* bytez[] -> */
         char *path, buffer[PATH_BUFFER_SIZE];
         int res;
+        normalize_name((char*) data);
         TRACE("RMDIR %s @ %llx\n", (char*) data, hdr->nodeid);
         path = node_get_path(node, buffer, (char*) data);
         res = rmdir(path);
@@ -581,6 +597,9 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
         struct node *newparent;
         int res;
 
+        normalize_name(oldname);
+        normalize_name(newname);
+
         TRACE("RENAME %s->%s @ %llx\n", oldname, newname, hdr->nodeid);
 
         target = lookup_child_by_name(node, oldname);
@@ -627,6 +646,7 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
             return;
         }
 
+        normalize_name(buffer);
         path = node_get_path(node, buffer, 0);
         TRACE("OPEN %llx '%s' 0%o fh=%p\n", hdr->nodeid, path, req->flags, h);
         h->fd = open(path, req->flags);
@@ -728,6 +748,7 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da
             return;
         }
 
+        normalize_name(buffer);
         path = node_get_path(node, buffer, 0);
         TRACE("OPENDIR %llx '%s'\n", hdr->nodeid, path);
         h->d = opendir(path);