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virtiofsd: passthrough_ll: control readdirplus
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>
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@ -153,6 +153,10 @@ void fuse_cmdline_help(void)
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" allowed (default: 10)\n"
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" -o norace disable racy fallback\n"
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" default: false\n"
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" -o readdirplus|no_readdirplus\n"
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" enable/disable readirplus\n"
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" default: readdirplus except with "
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"cache=never\n"
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);
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}
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@ -117,6 +117,8 @@ struct lo_data {
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double timeout;
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int cache;
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int timeout_set;
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int readdirplus_set;
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int readdirplus_clear;
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struct lo_inode root; /* protected by lo->mutex */
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struct lo_map ino_map; /* protected by lo->mutex */
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struct lo_map dirp_map; /* protected by lo->mutex */
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@ -140,6 +142,8 @@ static const struct fuse_opt lo_opts[] = {
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{ "cache=auto", offsetof(struct lo_data, cache), CACHE_NORMAL },
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{ "cache=always", offsetof(struct lo_data, cache), CACHE_ALWAYS },
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{ "norace", offsetof(struct lo_data, norace), 1 },
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{ "readdirplus", offsetof(struct lo_data, readdirplus_set), 1 },
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{ "no_readdirplus", offsetof(struct lo_data, readdirplus_clear), 1 },
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FUSE_OPT_END
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};
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static bool use_syslog = false;
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@ -478,7 +482,8 @@ static void lo_init(void *userdata, struct fuse_conn_info *conn)
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fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n");
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conn->want |= FUSE_CAP_FLOCK_LOCKS;
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}
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if (lo->cache == CACHE_NEVER) {
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if ((lo->cache == CACHE_NEVER && !lo->readdirplus_set) ||
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lo->readdirplus_clear) {
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fuse_log(FUSE_LOG_DEBUG, "lo_init: disabling readdirplus\n");
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conn->want &= ~FUSE_CAP_READDIRPLUS;
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}
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