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virtiofsd: passthrough_ll: control readdirplus

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Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Miklos Szeredi 2018-08-16 11:14:13 +02:00 committed by Dr. David Alan Gilbert
parent ddcbabcb0e
commit 59aef494be
2 changed files with 10 additions and 1 deletions
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4
tools/virtiofsd/helper.c
View file

@ -153,6 +153,10 @@ void fuse_cmdline_help(void)
" allowed (default: 10)\n"
" -o norace disable racy fallback\n"
" default: false\n"
" -o readdirplus|no_readdirplus\n"
" enable/disable readirplus\n"
" default: readdirplus except with "
"cache=never\n"
);
}

7
tools/virtiofsd/passthrough_ll.c
View file

@ -117,6 +117,8 @@ struct lo_data {
double timeout;
int cache;
int timeout_set;
int readdirplus_set;
int readdirplus_clear;
struct lo_inode root; /* protected by lo->mutex */
struct lo_map ino_map; /* protected by lo->mutex */
struct lo_map dirp_map; /* protected by lo->mutex */
@ -140,6 +142,8 @@ static const struct fuse_opt lo_opts[] = {
{ "cache=auto", offsetof(struct lo_data, cache), CACHE_NORMAL },
{ "cache=always", offsetof(struct lo_data, cache), CACHE_ALWAYS },
{ "norace", offsetof(struct lo_data, norace), 1 },
{ "readdirplus", offsetof(struct lo_data, readdirplus_set), 1 },
{ "no_readdirplus", offsetof(struct lo_data, readdirplus_clear), 1 },
FUSE_OPT_END
};
static bool use_syslog = false;
@ -478,7 +482,8 @@ static void lo_init(void *userdata, struct fuse_conn_info *conn)
fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n");
conn->want |= FUSE_CAP_FLOCK_LOCKS;
}
if (lo->cache == CACHE_NEVER) {
if ((lo->cache == CACHE_NEVER && !lo->readdirplus_set) ||
lo->readdirplus_clear) {
fuse_log(FUSE_LOG_DEBUG, "lo_init: disabling readdirplus\n");
conn->want &= ~FUSE_CAP_READDIRPLUS;
}