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| author | Paul Eastham <eastham@google.com> | 2010-09-21 17:14:31 -0700 |
|---|---|---|
| committer | Paul Eastham <eastham@google.com> | 2010-09-24 08:13:49 -0700 |
| commit | f43219e0b1022b257499289ceb951f6a1a44bf9c (patch) | |
| tree | 0b89575de92b1f48796803cf7f1b82429cfbb774 /sdcard | |
| parent | d7482b2f4cdd6a35f8707d94536801a958120b6b (diff) | |
| download | system_core-f43219e0b1022b257499289ceb951f6a1a44bf9c.tar.gz system_core-f43219e0b1022b257499289ceb951f6a1a44bf9c.tar.bz2 system_core-f43219e0b1022b257499289ceb951f6a1a44bf9c.zip | |
Partially implement SETATTR for sdcard/FUSE
Handle truncate cases within SETATTR so that truncate() and ftruncate() call
will work.
Change-Id: I5a9862dcaa6ca7b5e9115cb5d3bfed88787fa7ac
Signed-off-by: Paul Eastham <eastham@google.com>
Diffstat (limited to 'sdcard')
| -rw-r--r-- | sdcard/sdcard.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c index 27cbde255..8bb0c82cb 100644 --- a/sdcard/sdcard.c +++ b/sdcard/sdcard.c @@ -114,6 +114,12 @@ struct fuse { #define PATH_BUFFER_SIZE 1024 +/* + * Get the real-life absolute path to a node. + * node: start at this node + * buf: storage for returned string + * name: append this string to path if set + */ char *node_get_path(struct node *node, char *buf, const char *name) { char *out = buf + PATH_BUFFER_SIZE - 1; @@ -439,15 +445,27 @@ void handle_fuse_request(struct fuse *fuse, struct fuse_in_header *hdr, void *da case FUSE_SETATTR: { /* setattr_in -> attr_out */ struct fuse_setattr_in *req = data; struct fuse_attr_out out; + char *path, buffer[PATH_BUFFER_SIZE]; + int res = 0; + TRACE("SETATTR fh=%llx id=%llx valid=%x\n", req->fh, hdr->nodeid, req->valid); - /* XXX */ + /* XXX: incomplete implementation -- truncate only. chmod/chown + * should NEVER be implemented. */ + + path = node_get_path(node, buffer, 0); + if (req->valid & FATTR_SIZE) + res = truncate(path, req->size); memset(&out, 0, sizeof(out)); node_get_attr(node, &out.attr); out.attr_valid = 10; - fuse_reply(fuse, hdr->unique, &out, sizeof(out)); + + if (res) + fuse_status(fuse, hdr->unique, -errno); + else + fuse_reply(fuse, hdr->unique, &out, sizeof(out)); return; } // case FUSE_READLINK: |