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Fix fuse read/write to not segfault on unaligned IO.

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This commit is contained in:
Justin Husted 2019-10-07 14:21:39 -07:00 committed by Kent Overstreet
parent 415a3651fc
commit 52771aa7d2
1 changed files with 11 additions and 3 deletions
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14
cmd_fusemount.c
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@ -73,7 +73,11 @@ static struct fuse_entry_param inode_to_entry(struct bch_fs *c,
static void bcachefs_fuse_init(void *arg, struct fuse_conn_info *conn)
{
conn->want |= FUSE_CAP_WRITEBACK_CACHE;
if (conn->capable & FUSE_CAP_WRITEBACK_CACHE) {
fuse_log(FUSE_LOG_DEBUG, "fuse_init: activating writeback\n");
conn->want |= FUSE_CAP_WRITEBACK_CACHE;
} else
fuse_log(FUSE_LOG_DEBUG, "fuse_init: writeback not capable\n");
//conn->want |= FUSE_CAP_POSIX_ACL;
}
@ -378,7 +382,9 @@ static void bcachefs_fuse_read(fuse_req_t req, fuse_ino_t inum,
{
struct bch_fs *c = fuse_req_userdata(req);
if ((size|offset) & block_bytes(c)) {
if ((size|offset) & (block_bytes(c) - 1)) {
fuse_log(FUSE_LOG_DEBUG,
"bcachefs_fuse_read: unaligned io not supported.\n");
fuse_reply_err(req, EINVAL);
return;
}
@ -430,7 +436,9 @@ static void bcachefs_fuse_write(fuse_req_t req, fuse_ino_t inum,
struct bio_vec bv;
struct closure cl;
if ((size|offset) & block_bytes(c)) {
if ((size|offset) & (block_bytes(c) - 1)) {
fuse_log(FUSE_LOG_DEBUG,
"bcachefs_fuse_write: unaligned io not supported.\n");
fuse_reply_err(req, EINVAL);
return;
}