452 lines
17 KiB
Diff
452 lines
17 KiB
Diff
From: Eryu Guan <eguan@linux.alibaba.com>
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Date: Mon, 27 Jan 2020 19:01:37 +0000
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Subject: [PATCH] virtiofsd: print log only when priority is high enough
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Introduce "-o log_level=" command line option to specify current log
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level (priority), valid values are "debug info warn err", e.g.
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./virtiofsd -o log_level=debug ...
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So only log priority higher than "debug" will be printed to
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stderr/syslog. And the default level is info.
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The "-o debug"/"-d" options are kept, and imply debug log level.
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Signed-off-by: Eryu Guan <eguan@linux.alibaba.com>
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dgilbert: Reworked for libfuse's log_func
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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with fix by:
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Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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(cherry picked from commit d240314a1a18a1d914af1b5763fe8c9a572e6409)
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---
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tools/virtiofsd/fuse_lowlevel.c | 75 ++++++++------------
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tools/virtiofsd/fuse_lowlevel.h | 1 +
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tools/virtiofsd/helper.c | 8 ++-
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tools/virtiofsd/passthrough_ll.c | 118 +++++++++++++------------------
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4 files changed, 87 insertions(+), 115 deletions(-)
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diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c
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index 6ceb33d913..a7a19685b5 100644
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--- a/tools/virtiofsd/fuse_lowlevel.c
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+++ b/tools/virtiofsd/fuse_lowlevel.c
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@@ -158,19 +158,17 @@ static int fuse_send_msg(struct fuse_session *se, struct fuse_chan *ch,
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struct fuse_out_header *out = iov[0].iov_base;
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out->len = iov_length(iov, count);
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- if (se->debug) {
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- if (out->unique == 0) {
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- fuse_log(FUSE_LOG_DEBUG, "NOTIFY: code=%d length=%u\n", out->error,
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- out->len);
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- } else if (out->error) {
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- fuse_log(FUSE_LOG_DEBUG,
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- " unique: %llu, error: %i (%s), outsize: %i\n",
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- (unsigned long long)out->unique, out->error,
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- strerror(-out->error), out->len);
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- } else {
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- fuse_log(FUSE_LOG_DEBUG, " unique: %llu, success, outsize: %i\n",
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- (unsigned long long)out->unique, out->len);
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- }
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+ if (out->unique == 0) {
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+ fuse_log(FUSE_LOG_DEBUG, "NOTIFY: code=%d length=%u\n", out->error,
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+ out->len);
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+ } else if (out->error) {
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+ fuse_log(FUSE_LOG_DEBUG,
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+ " unique: %llu, error: %i (%s), outsize: %i\n",
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+ (unsigned long long)out->unique, out->error,
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+ strerror(-out->error), out->len);
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+ } else {
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+ fuse_log(FUSE_LOG_DEBUG, " unique: %llu, success, outsize: %i\n",
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+ (unsigned long long)out->unique, out->len);
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}
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if (fuse_lowlevel_is_virtio(se)) {
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@@ -1662,10 +1660,8 @@ static void do_interrupt(fuse_req_t req, fuse_ino_t nodeid,
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return;
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}
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- if (se->debug) {
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- fuse_log(FUSE_LOG_DEBUG, "INTERRUPT: %llu\n",
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- (unsigned long long)arg->unique);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "INTERRUPT: %llu\n",
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+ (unsigned long long)arg->unique);
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req->u.i.unique = arg->unique;
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@@ -1901,13 +1897,10 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid,
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}
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}
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- if (se->debug) {
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- fuse_log(FUSE_LOG_DEBUG, "INIT: %u.%u\n", arg->major, arg->minor);
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- if (arg->major == 7 && arg->minor >= 6) {
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- fuse_log(FUSE_LOG_DEBUG, "flags=0x%08x\n", arg->flags);
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- fuse_log(FUSE_LOG_DEBUG, "max_readahead=0x%08x\n",
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- arg->max_readahead);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "INIT: %u.%u\n", arg->major, arg->minor);
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+ if (arg->major == 7 && arg->minor >= 6) {
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+ fuse_log(FUSE_LOG_DEBUG, "flags=0x%08x\n", arg->flags);
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+ fuse_log(FUSE_LOG_DEBUG, "max_readahead=0x%08x\n", arg->max_readahead);
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}
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se->conn.proto_major = arg->major;
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se->conn.proto_minor = arg->minor;
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@@ -2116,19 +2109,14 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid,
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outarg.congestion_threshold = se->conn.congestion_threshold;
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outarg.time_gran = se->conn.time_gran;
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- if (se->debug) {
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- fuse_log(FUSE_LOG_DEBUG, " INIT: %u.%u\n", outarg.major,
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- outarg.minor);
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- fuse_log(FUSE_LOG_DEBUG, " flags=0x%08x\n", outarg.flags);
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- fuse_log(FUSE_LOG_DEBUG, " max_readahead=0x%08x\n",
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- outarg.max_readahead);
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- fuse_log(FUSE_LOG_DEBUG, " max_write=0x%08x\n", outarg.max_write);
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- fuse_log(FUSE_LOG_DEBUG, " max_background=%i\n",
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- outarg.max_background);
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- fuse_log(FUSE_LOG_DEBUG, " congestion_threshold=%i\n",
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- outarg.congestion_threshold);
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- fuse_log(FUSE_LOG_DEBUG, " time_gran=%u\n", outarg.time_gran);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, " INIT: %u.%u\n", outarg.major, outarg.minor);
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+ fuse_log(FUSE_LOG_DEBUG, " flags=0x%08x\n", outarg.flags);
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+ fuse_log(FUSE_LOG_DEBUG, " max_readahead=0x%08x\n", outarg.max_readahead);
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+ fuse_log(FUSE_LOG_DEBUG, " max_write=0x%08x\n", outarg.max_write);
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+ fuse_log(FUSE_LOG_DEBUG, " max_background=%i\n", outarg.max_background);
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+ fuse_log(FUSE_LOG_DEBUG, " congestion_threshold=%i\n",
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+ outarg.congestion_threshold);
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+ fuse_log(FUSE_LOG_DEBUG, " time_gran=%u\n", outarg.time_gran);
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send_reply_ok(req, &outarg, outargsize);
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}
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@@ -2407,14 +2395,11 @@ void fuse_session_process_buf_int(struct fuse_session *se,
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in = fuse_mbuf_iter_advance(&iter, sizeof(*in));
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assert(in); /* caller guarantees the input buffer is large enough */
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- if (se->debug) {
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- fuse_log(FUSE_LOG_DEBUG,
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- "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, "
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- "pid: %u\n",
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- (unsigned long long)in->unique,
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- opname((enum fuse_opcode)in->opcode), in->opcode,
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- (unsigned long long)in->nodeid, buf->size, in->pid);
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- }
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+ fuse_log(
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+ FUSE_LOG_DEBUG,
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+ "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u\n",
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+ (unsigned long long)in->unique, opname((enum fuse_opcode)in->opcode),
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+ in->opcode, (unsigned long long)in->nodeid, buf->size, in->pid);
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req = fuse_ll_alloc_req(se);
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if (req == NULL) {
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diff --git a/tools/virtiofsd/fuse_lowlevel.h b/tools/virtiofsd/fuse_lowlevel.h
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index f2750bc189..138041e5f1 100644
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--- a/tools/virtiofsd/fuse_lowlevel.h
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+++ b/tools/virtiofsd/fuse_lowlevel.h
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@@ -1796,6 +1796,7 @@ struct fuse_cmdline_opts {
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int show_help;
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int print_capabilities;
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int syslog;
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+ int log_level;
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unsigned int max_idle_threads;
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};
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diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c
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index 9692ef9f1f..6d50a46a7e 100644
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--- a/tools/virtiofsd/helper.c
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+++ b/tools/virtiofsd/helper.c
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@@ -34,7 +34,6 @@
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t, offsetof(struct fuse_cmdline_opts, p), v \
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}
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-
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static const struct fuse_opt fuse_helper_opts[] = {
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FUSE_HELPER_OPT("-h", show_help),
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FUSE_HELPER_OPT("--help", show_help),
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@@ -55,6 +54,10 @@ static const struct fuse_opt fuse_helper_opts[] = {
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FUSE_OPT_KEY("subtype=", FUSE_OPT_KEY_KEEP),
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FUSE_HELPER_OPT("max_idle_threads=%u", max_idle_threads),
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FUSE_HELPER_OPT("--syslog", syslog),
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+ FUSE_HELPER_OPT_VALUE("log_level=debug", log_level, FUSE_LOG_DEBUG),
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+ FUSE_HELPER_OPT_VALUE("log_level=info", log_level, FUSE_LOG_INFO),
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+ FUSE_HELPER_OPT_VALUE("log_level=warn", log_level, FUSE_LOG_WARNING),
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+ FUSE_HELPER_OPT_VALUE("log_level=err", log_level, FUSE_LOG_ERR),
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FUSE_OPT_END
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};
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@@ -142,6 +145,9 @@ void fuse_cmdline_help(void)
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" --syslog log to syslog (default stderr)\n"
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" -f foreground operation\n"
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" --daemonize run in background\n"
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+ " -o log_level=<level> log level, default to \"info\"\n"
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+ " level could be one of \"debug, "
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+ "info, warn, err\"\n"
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" -o max_idle_threads the maximum number of idle worker "
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"threads\n"
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" allowed (default: 10)\n"
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diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
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index 0372aca143..ff6910fd73 100644
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--- a/tools/virtiofsd/passthrough_ll.c
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+++ b/tools/virtiofsd/passthrough_ll.c
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@@ -37,6 +37,7 @@
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#include "qemu/osdep.h"
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#include "fuse_virtio.h"
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+#include "fuse_log.h"
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#include "fuse_lowlevel.h"
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#include <assert.h>
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#include <cap-ng.h>
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@@ -140,6 +141,7 @@ static const struct fuse_opt lo_opts[] = {
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FUSE_OPT_END
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};
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static bool use_syslog = false;
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+static int current_log_level;
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static void unref_inode(struct lo_data *lo, struct lo_inode *inode, uint64_t n);
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@@ -458,11 +460,6 @@ static int lo_fd(fuse_req_t req, fuse_ino_t ino)
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return inode ? inode->fd : -1;
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}
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-static bool lo_debug(fuse_req_t req)
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-{
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- return lo_data(req)->debug != 0;
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-}
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-
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static void lo_init(void *userdata, struct fuse_conn_info *conn)
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{
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struct lo_data *lo = (struct lo_data *)userdata;
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@@ -472,15 +469,11 @@ static void lo_init(void *userdata, struct fuse_conn_info *conn)
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}
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if (lo->writeback && conn->capable & FUSE_CAP_WRITEBACK_CACHE) {
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- if (lo->debug) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_init: activating writeback\n");
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_init: activating writeback\n");
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conn->want |= FUSE_CAP_WRITEBACK_CACHE;
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}
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if (lo->flock && conn->capable & FUSE_CAP_FLOCK_LOCKS) {
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- if (lo->debug) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n");
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- }
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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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}
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@@ -823,10 +816,8 @@ static int lo_do_lookup(fuse_req_t req, fuse_ino_t parent, const char *name,
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}
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e->ino = inode->fuse_ino;
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n",
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- (unsigned long long)parent, name, (unsigned long long)e->ino);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)parent,
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+ name, (unsigned long long)e->ino);
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return 0;
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@@ -843,10 +834,8 @@ static void lo_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
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struct fuse_entry_param e;
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int err;
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_lookup(parent=%" PRIu64 ", name=%s)\n",
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- parent, name);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_lookup(parent=%" PRIu64 ", name=%s)\n", parent,
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+ name);
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/*
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* Don't use is_safe_path_component(), allow "." and ".." for NFS export
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@@ -971,10 +960,8 @@ static void lo_mknod_symlink(fuse_req_t req, fuse_ino_t parent,
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goto out;
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}
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n",
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- (unsigned long long)parent, name, (unsigned long long)e.ino);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)parent,
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+ name, (unsigned long long)e.ino);
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fuse_reply_entry(req, &e);
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return;
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@@ -1074,10 +1061,8 @@ static void lo_link(fuse_req_t req, fuse_ino_t ino, fuse_ino_t parent,
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pthread_mutex_unlock(&lo->mutex);
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e.ino = inode->fuse_ino;
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n",
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- (unsigned long long)parent, name, (unsigned long long)e.ino);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)parent,
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+ name, (unsigned long long)e.ino);
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fuse_reply_entry(req, &e);
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return;
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@@ -1171,11 +1156,9 @@ static void lo_forget_one(fuse_req_t req, fuse_ino_t ino, uint64_t nlookup)
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return;
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}
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, " forget %lli %lli -%lli\n",
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- (unsigned long long)ino, (unsigned long long)inode->refcount,
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- (unsigned long long)nlookup);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, " forget %lli %lli -%lli\n",
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+ (unsigned long long)ino, (unsigned long long)inode->refcount,
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+ (unsigned long long)nlookup);
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unref_inode(lo, inode, nlookup);
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}
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@@ -1445,10 +1428,8 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
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int err;
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struct lo_cred old = {};
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_create(parent=%" PRIu64 ", name=%s)\n",
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- parent, name);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_create(parent=%" PRIu64 ", name=%s)\n", parent,
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+ name);
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if (!is_safe_path_component(name)) {
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fuse_reply_err(req, EINVAL);
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@@ -1525,10 +1506,8 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
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char buf[64];
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struct lo_data *lo = lo_data(req);
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_open(ino=%" PRIu64 ", flags=%d)\n", ino,
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- fi->flags);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_open(ino=%" PRIu64 ", flags=%d)\n", ino,
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+ fi->flags);
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/*
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* With writeback cache, kernel may send read requests even
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@@ -1644,12 +1623,10 @@ static void lo_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t offset,
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{
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struct fuse_bufvec buf = FUSE_BUFVEC_INIT(size);
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG,
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- "lo_read(ino=%" PRIu64 ", size=%zd, "
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- "off=%lu)\n",
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- ino, size, (unsigned long)offset);
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- }
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+ fuse_log(FUSE_LOG_DEBUG,
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+ "lo_read(ino=%" PRIu64 ", size=%zd, "
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+ "off=%lu)\n",
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+ ino, size, (unsigned long)offset);
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buf.buf[0].flags = FUSE_BUF_IS_FD | FUSE_BUF_FD_SEEK;
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buf.buf[0].fd = lo_fi_fd(req, fi);
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@@ -1671,11 +1648,9 @@ static void lo_write_buf(fuse_req_t req, fuse_ino_t ino,
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out_buf.buf[0].fd = lo_fi_fd(req, fi);
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out_buf.buf[0].pos = off;
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG,
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- "lo_write(ino=%" PRIu64 ", size=%zd, off=%lu)\n", ino,
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- out_buf.buf[0].size, (unsigned long)off);
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- }
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+ fuse_log(FUSE_LOG_DEBUG,
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+ "lo_write_buf(ino=%" PRIu64 ", size=%zd, off=%lu)\n", ino,
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+ out_buf.buf[0].size, (unsigned long)off);
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/*
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* If kill_priv is set, drop CAP_FSETID which should lead to kernel
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@@ -1774,11 +1749,8 @@ static void lo_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
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goto out;
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}
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG,
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- "lo_getxattr(ino=%" PRIu64 ", name=%s size=%zd)\n", ino, name,
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- size);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_getxattr(ino=%" PRIu64 ", name=%s size=%zd)\n",
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+ ino, name, size);
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if (inode->is_symlink) {
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/* Sorry, no race free way to getxattr on symlink. */
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@@ -1852,10 +1824,8 @@ static void lo_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size)
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goto out;
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}
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- if (lo_debug(req)) {
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- fuse_log(FUSE_LOG_DEBUG, "lo_listxattr(ino=%" PRIu64 ", size=%zd)\n",
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- ino, size);
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- }
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+ fuse_log(FUSE_LOG_DEBUG, "lo_listxattr(ino=%" PRIu64 ", size=%zd)\n", ino,
|
|
+ size);
|
|
|
|
if (inode->is_symlink) {
|
|
/* Sorry, no race free way to listxattr on symlink. */
|
|
@@ -1929,11 +1899,8 @@ static void lo_setxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
|
|
goto out;
|
|
}
|
|
|
|
- if (lo_debug(req)) {
|
|
- fuse_log(FUSE_LOG_DEBUG,
|
|
- "lo_setxattr(ino=%" PRIu64 ", name=%s value=%s size=%zd)\n",
|
|
- ino, name, value, size);
|
|
- }
|
|
+ fuse_log(FUSE_LOG_DEBUG, "lo_setxattr(ino=%" PRIu64
|
|
+ ", name=%s value=%s size=%zd)\n", ino, name, value, size);
|
|
|
|
if (inode->is_symlink) {
|
|
/* Sorry, no race free way to setxattr on symlink. */
|
|
@@ -1978,10 +1945,8 @@ static void lo_removexattr(fuse_req_t req, fuse_ino_t ino, const char *name)
|
|
goto out;
|
|
}
|
|
|
|
- if (lo_debug(req)) {
|
|
- fuse_log(FUSE_LOG_DEBUG, "lo_removexattr(ino=%" PRIu64 ", name=%s)\n",
|
|
- ino, name);
|
|
- }
|
|
+ fuse_log(FUSE_LOG_DEBUG, "lo_removexattr(ino=%" PRIu64 ", name=%s)\n", ino,
|
|
+ name);
|
|
|
|
if (inode->is_symlink) {
|
|
/* Sorry, no race free way to setxattr on symlink. */
|
|
@@ -2303,6 +2268,10 @@ static void setup_nofile_rlimit(void)
|
|
|
|
static void log_func(enum fuse_log_level level, const char *fmt, va_list ap)
|
|
{
|
|
+ if (current_log_level < level) {
|
|
+ return;
|
|
+ }
|
|
+
|
|
if (use_syslog) {
|
|
int priority = LOG_ERR;
|
|
switch (level) {
|
|
@@ -2401,8 +2370,19 @@ int main(int argc, char *argv[])
|
|
return 1;
|
|
}
|
|
|
|
+ /*
|
|
+ * log_level is 0 if not configured via cmd options (0 is LOG_EMERG,
|
|
+ * and we don't use this log level).
|
|
+ */
|
|
+ if (opts.log_level != 0) {
|
|
+ current_log_level = opts.log_level;
|
|
+ }
|
|
lo.debug = opts.debug;
|
|
+ if (lo.debug) {
|
|
+ current_log_level = FUSE_LOG_DEBUG;
|
|
+ }
|
|
lo.root.refcount = 2;
|
|
+
|
|
if (lo.source) {
|
|
struct stat stat;
|
|
int res;
|