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Thu, 23 Jan 2020 16:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579798081; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=43HHQn/g9f/OjgxGf/Mwxr5aHgsmBAxfCbQZ/Y0O3uI=; b=jHLsa+7RTM6hYrcOuy9GSocjo8Xs7ylDIN2xBM46WM4U166uAcbu5BrSl0EcTi4V9W8cGf z/sD8w9Yh+CsJA8dn51KzcvbM8YdsweFb67/OgquaxJuvHSVu7jPEsucJ95tPZ6fIYMUID t1O/2ceKGAQLU3vCp+a43hupWYt+WkA= From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com Subject: [PULL 059/108] virtiofsd: print log only when priority is high enough Date: Thu, 23 Jan 2020 16:45:41 +0000 Message-Id: <20200123164630.91498-60-dgilbert@redhat.com> In-Reply-To: <20200123164630.91498-1-dgilbert@redhat.com> References: <20200123164630.91498-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: k9GlJ50SO6aBoYxA0XcIrA-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Eryu Guan Introduce "-o log_level=3D" command line option to specify current log level (priority), valid values are "debug info warn err", e.g. ./virtiofsd -o log_level=3Ddebug ... So only log priority higher than "debug" will be printed to stderr/syslog. And the default level is info. The "-o debug"/"-d" options are kept, and imply debug log level. Signed-off-by: Eryu Guan dgilbert: Reworked for libfuse's log_func Signed-off-by: Dr. David Alan Gilbert with fix by: Signed-off-by: Xiao Yang Reviewed-by: Daniel P. Berrang=C3=A9 Signed-off-by: Dr. David Alan Gilbert --- tools/virtiofsd/fuse_lowlevel.c | 75 ++++++++------------ tools/virtiofsd/fuse_lowlevel.h | 1 + tools/virtiofsd/helper.c | 8 ++- tools/virtiofsd/passthrough_ll.c | 118 +++++++++++++------------------ 4 files changed, 87 insertions(+), 115 deletions(-) diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowleve= l.c index 6ceb33d913..a7a19685b5 100644 --- a/tools/virtiofsd/fuse_lowlevel.c +++ b/tools/virtiofsd/fuse_lowlevel.c @@ -158,19 +158,17 @@ static int fuse_send_msg(struct fuse_session *se, str= uct fuse_chan *ch, struct fuse_out_header *out =3D iov[0].iov_base; =20 out->len =3D iov_length(iov, count); - if (se->debug) { - if (out->unique =3D=3D 0) { - fuse_log(FUSE_LOG_DEBUG, "NOTIFY: code=3D%d length=3D%u\n", ou= t->error, - out->len); - } else if (out->error) { - fuse_log(FUSE_LOG_DEBUG, - " unique: %llu, error: %i (%s), outsize: %i\n", - (unsigned long long)out->unique, out->error, - strerror(-out->error), out->len); - } else { - fuse_log(FUSE_LOG_DEBUG, " unique: %llu, success, outsize: %= i\n", - (unsigned long long)out->unique, out->len); - } + if (out->unique =3D=3D 0) { + fuse_log(FUSE_LOG_DEBUG, "NOTIFY: code=3D%d length=3D%u\n", out->e= rror, + out->len); + } else if (out->error) { + fuse_log(FUSE_LOG_DEBUG, + " unique: %llu, error: %i (%s), outsize: %i\n", + (unsigned long long)out->unique, out->error, + strerror(-out->error), out->len); + } else { + fuse_log(FUSE_LOG_DEBUG, " unique: %llu, success, outsize: %i\n", + (unsigned long long)out->unique, out->len); } =20 if (fuse_lowlevel_is_virtio(se)) { @@ -1662,10 +1660,8 @@ static void do_interrupt(fuse_req_t req, fuse_ino_t = nodeid, return; } =20 - if (se->debug) { - fuse_log(FUSE_LOG_DEBUG, "INTERRUPT: %llu\n", - (unsigned long long)arg->unique); - } + fuse_log(FUSE_LOG_DEBUG, "INTERRUPT: %llu\n", + (unsigned long long)arg->unique); =20 req->u.i.unique =3D arg->unique; =20 @@ -1901,13 +1897,10 @@ static void do_init(fuse_req_t req, fuse_ino_t node= id, } } =20 - if (se->debug) { - fuse_log(FUSE_LOG_DEBUG, "INIT: %u.%u\n", arg->major, arg->minor); - if (arg->major =3D=3D 7 && arg->minor >=3D 6) { - fuse_log(FUSE_LOG_DEBUG, "flags=3D0x%08x\n", arg->flags); - fuse_log(FUSE_LOG_DEBUG, "max_readahead=3D0x%08x\n", - arg->max_readahead); - } + fuse_log(FUSE_LOG_DEBUG, "INIT: %u.%u\n", arg->major, arg->minor); + if (arg->major =3D=3D 7 && arg->minor >=3D 6) { + fuse_log(FUSE_LOG_DEBUG, "flags=3D0x%08x\n", arg->flags); + fuse_log(FUSE_LOG_DEBUG, "max_readahead=3D0x%08x\n", arg->max_read= ahead); } se->conn.proto_major =3D arg->major; se->conn.proto_minor =3D arg->minor; @@ -2116,19 +2109,14 @@ static void do_init(fuse_req_t req, fuse_ino_t node= id, outarg.congestion_threshold =3D se->conn.congestion_threshold; outarg.time_gran =3D se->conn.time_gran; =20 - if (se->debug) { - fuse_log(FUSE_LOG_DEBUG, " INIT: %u.%u\n", outarg.major, - outarg.minor); - fuse_log(FUSE_LOG_DEBUG, " flags=3D0x%08x\n", outarg.flags); - fuse_log(FUSE_LOG_DEBUG, " max_readahead=3D0x%08x\n", - outarg.max_readahead); - fuse_log(FUSE_LOG_DEBUG, " max_write=3D0x%08x\n", outarg.max_wri= te); - fuse_log(FUSE_LOG_DEBUG, " max_background=3D%i\n", - outarg.max_background); - fuse_log(FUSE_LOG_DEBUG, " congestion_threshold=3D%i\n", - outarg.congestion_threshold); - fuse_log(FUSE_LOG_DEBUG, " time_gran=3D%u\n", outarg.time_gran); - } + fuse_log(FUSE_LOG_DEBUG, " INIT: %u.%u\n", outarg.major, outarg.mino= r); + fuse_log(FUSE_LOG_DEBUG, " flags=3D0x%08x\n", outarg.flags); + fuse_log(FUSE_LOG_DEBUG, " max_readahead=3D0x%08x\n", outarg.max_rea= dahead); + fuse_log(FUSE_LOG_DEBUG, " max_write=3D0x%08x\n", outarg.max_write); + fuse_log(FUSE_LOG_DEBUG, " max_background=3D%i\n", outarg.max_backgr= ound); + fuse_log(FUSE_LOG_DEBUG, " congestion_threshold=3D%i\n", + outarg.congestion_threshold); + fuse_log(FUSE_LOG_DEBUG, " time_gran=3D%u\n", outarg.time_gran); =20 send_reply_ok(req, &outarg, outargsize); } @@ -2407,14 +2395,11 @@ void fuse_session_process_buf_int(struct fuse_sessi= on *se, in =3D fuse_mbuf_iter_advance(&iter, sizeof(*in)); assert(in); /* caller guarantees the input buffer is large enough */ =20 - if (se->debug) { - fuse_log(FUSE_LOG_DEBUG, - "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu= , " - "pid: %u\n", - (unsigned long long)in->unique, - opname((enum fuse_opcode)in->opcode), in->opcode, - (unsigned long long)in->nodeid, buf->size, in->pid); - } + fuse_log( + FUSE_LOG_DEBUG, + "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u= \n", + (unsigned long long)in->unique, opname((enum fuse_opcode)in->opcod= e), + in->opcode, (unsigned long long)in->nodeid, buf->size, in->pid); =20 req =3D fuse_ll_alloc_req(se); if (req =3D=3D NULL) { diff --git a/tools/virtiofsd/fuse_lowlevel.h b/tools/virtiofsd/fuse_lowleve= l.h index f2750bc189..138041e5f1 100644 --- a/tools/virtiofsd/fuse_lowlevel.h +++ b/tools/virtiofsd/fuse_lowlevel.h @@ -1796,6 +1796,7 @@ struct fuse_cmdline_opts { int show_help; int print_capabilities; int syslog; + int log_level; unsigned int max_idle_threads; }; =20 diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c index 9692ef9f1f..6d50a46a7e 100644 --- a/tools/virtiofsd/helper.c +++ b/tools/virtiofsd/helper.c @@ -34,7 +34,6 @@ t, offsetof(struct fuse_cmdline_opts, p), v \ } =20 - static const struct fuse_opt fuse_helper_opts[] =3D { FUSE_HELPER_OPT("-h", show_help), FUSE_HELPER_OPT("--help", show_help), @@ -55,6 +54,10 @@ static const struct fuse_opt fuse_helper_opts[] =3D { FUSE_OPT_KEY("subtype=3D", FUSE_OPT_KEY_KEEP), FUSE_HELPER_OPT("max_idle_threads=3D%u", max_idle_threads), FUSE_HELPER_OPT("--syslog", syslog), + FUSE_HELPER_OPT_VALUE("log_level=3Ddebug", log_level, FUSE_LOG_DEBUG), + FUSE_HELPER_OPT_VALUE("log_level=3Dinfo", log_level, FUSE_LOG_INFO), + FUSE_HELPER_OPT_VALUE("log_level=3Dwarn", log_level, FUSE_LOG_WARNING), + FUSE_HELPER_OPT_VALUE("log_level=3Derr", log_level, FUSE_LOG_ERR), FUSE_OPT_END }; =20 @@ -142,6 +145,9 @@ void fuse_cmdline_help(void) " --syslog log to syslog (default stderr)\= n" " -f foreground operation\n" " --daemonize run in background\n" + " -o log_level=3D log level, default to \"info\= "\n" + " level could be one of \"debug, " + "info, warn, err\"\n" " -o max_idle_threads the maximum number of idle work= er " "threads\n" " allowed (default: 10)\n" diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough= _ll.c index 0372aca143..ff6910fd73 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -37,6 +37,7 @@ =20 #include "qemu/osdep.h" #include "fuse_virtio.h" +#include "fuse_log.h" #include "fuse_lowlevel.h" #include #include @@ -140,6 +141,7 @@ static const struct fuse_opt lo_opts[] =3D { FUSE_OPT_END }; static bool use_syslog =3D false; +static int current_log_level; =20 static void unref_inode(struct lo_data *lo, struct lo_inode *inode, uint64= _t n); =20 @@ -458,11 +460,6 @@ static int lo_fd(fuse_req_t req, fuse_ino_t ino) return inode ? inode->fd : -1; } =20 -static bool lo_debug(fuse_req_t req) -{ - return lo_data(req)->debug !=3D 0; -} - static void lo_init(void *userdata, struct fuse_conn_info *conn) { struct lo_data *lo =3D (struct lo_data *)userdata; @@ -472,15 +469,11 @@ static void lo_init(void *userdata, struct fuse_conn_= info *conn) } =20 if (lo->writeback && conn->capable & FUSE_CAP_WRITEBACK_CACHE) { - if (lo->debug) { - fuse_log(FUSE_LOG_DEBUG, "lo_init: activating writeback\n"); - } + fuse_log(FUSE_LOG_DEBUG, "lo_init: activating writeback\n"); conn->want |=3D FUSE_CAP_WRITEBACK_CACHE; } if (lo->flock && conn->capable & FUSE_CAP_FLOCK_LOCKS) { - if (lo->debug) { - fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n"); - } + fuse_log(FUSE_LOG_DEBUG, "lo_init: activating flock locks\n"); conn->want |=3D FUSE_CAP_FLOCK_LOCKS; } } @@ -823,10 +816,8 @@ static int lo_do_lookup(fuse_req_t req, fuse_ino_t par= ent, const char *name, } e->ino =3D inode->fuse_ino; =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", - (unsigned long long)parent, name, (unsigned long long)e->= ino); - } + fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)pa= rent, + name, (unsigned long long)e->ino); =20 return 0; =20 @@ -843,10 +834,8 @@ static void lo_lookup(fuse_req_t req, fuse_ino_t paren= t, const char *name) struct fuse_entry_param e; int err; =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, "lo_lookup(parent=3D%" PRIu64 ", name=3D%= s)\n", - parent, name); - } + fuse_log(FUSE_LOG_DEBUG, "lo_lookup(parent=3D%" PRIu64 ", name=3D%s)\n= ", parent, + name); =20 /* * Don't use is_safe_path_component(), allow "." and ".." for NFS expo= rt @@ -971,10 +960,8 @@ static void lo_mknod_symlink(fuse_req_t req, fuse_ino_= t parent, goto out; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", - (unsigned long long)parent, name, (unsigned long long)e.i= no); - } + fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)pa= rent, + name, (unsigned long long)e.ino); =20 fuse_reply_entry(req, &e); return; @@ -1074,10 +1061,8 @@ static void lo_link(fuse_req_t req, fuse_ino_t ino, = fuse_ino_t parent, pthread_mutex_unlock(&lo->mutex); e.ino =3D inode->fuse_ino; =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", - (unsigned long long)parent, name, (unsigned long long)e.i= no); - } + fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)pa= rent, + name, (unsigned long long)e.ino); =20 fuse_reply_entry(req, &e); return; @@ -1171,11 +1156,9 @@ static void lo_forget_one(fuse_req_t req, fuse_ino_t= ino, uint64_t nlookup) return; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, " forget %lli %lli -%lli\n", - (unsigned long long)ino, (unsigned long long)inode->refco= unt, - (unsigned long long)nlookup); - } + fuse_log(FUSE_LOG_DEBUG, " forget %lli %lli -%lli\n", + (unsigned long long)ino, (unsigned long long)inode->refcount, + (unsigned long long)nlookup); =20 unref_inode(lo, inode, nlookup); } @@ -1445,10 +1428,8 @@ static void lo_create(fuse_req_t req, fuse_ino_t par= ent, const char *name, int err; struct lo_cred old =3D {}; =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, "lo_create(parent=3D%" PRIu64 ", name=3D%= s)\n", - parent, name); - } + fuse_log(FUSE_LOG_DEBUG, "lo_create(parent=3D%" PRIu64 ", name=3D%s)\n= ", parent, + name); =20 if (!is_safe_path_component(name)) { fuse_reply_err(req, EINVAL); @@ -1525,10 +1506,8 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino, = struct fuse_file_info *fi) char buf[64]; struct lo_data *lo =3D lo_data(req); =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, "lo_open(ino=3D%" PRIu64 ", flags=3D%d)\n= ", ino, - fi->flags); - } + fuse_log(FUSE_LOG_DEBUG, "lo_open(ino=3D%" PRIu64 ", flags=3D%d)\n", i= no, + fi->flags); =20 /* * With writeback cache, kernel may send read requests even @@ -1644,12 +1623,10 @@ static void lo_read(fuse_req_t req, fuse_ino_t ino,= size_t size, off_t offset, { struct fuse_bufvec buf =3D FUSE_BUFVEC_INIT(size); =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, - "lo_read(ino=3D%" PRIu64 ", size=3D%zd, " - "off=3D%lu)\n", - ino, size, (unsigned long)offset); - } + fuse_log(FUSE_LOG_DEBUG, + "lo_read(ino=3D%" PRIu64 ", size=3D%zd, " + "off=3D%lu)\n", + ino, size, (unsigned long)offset); =20 buf.buf[0].flags =3D FUSE_BUF_IS_FD | FUSE_BUF_FD_SEEK; buf.buf[0].fd =3D lo_fi_fd(req, fi); @@ -1671,11 +1648,9 @@ static void lo_write_buf(fuse_req_t req, fuse_ino_t = ino, out_buf.buf[0].fd =3D lo_fi_fd(req, fi); out_buf.buf[0].pos =3D off; =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, - "lo_write(ino=3D%" PRIu64 ", size=3D%zd, off=3D%lu)\n", i= no, - out_buf.buf[0].size, (unsigned long)off); - } + fuse_log(FUSE_LOG_DEBUG, + "lo_write_buf(ino=3D%" PRIu64 ", size=3D%zd, off=3D%lu)\n", i= no, + out_buf.buf[0].size, (unsigned long)off); =20 /* * If kill_priv is set, drop CAP_FSETID which should lead to kernel @@ -1774,11 +1749,8 @@ static void lo_getxattr(fuse_req_t req, fuse_ino_t i= no, const char *name, goto out; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, - "lo_getxattr(ino=3D%" PRIu64 ", name=3D%s size=3D%zd)\n",= ino, name, - size); - } + fuse_log(FUSE_LOG_DEBUG, "lo_getxattr(ino=3D%" PRIu64 ", name=3D%s siz= e=3D%zd)\n", + ino, name, size); =20 if (inode->is_symlink) { /* Sorry, no race free way to getxattr on symlink. */ @@ -1852,10 +1824,8 @@ static void lo_listxattr(fuse_req_t req, fuse_ino_t = ino, size_t size) goto out; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, "lo_listxattr(ino=3D%" PRIu64 ", size=3D%= zd)\n", - ino, size); - } + fuse_log(FUSE_LOG_DEBUG, "lo_listxattr(ino=3D%" PRIu64 ", size=3D%zd)\= n", ino, + size); =20 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 i= no, const char *name, goto out; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, - "lo_setxattr(ino=3D%" PRIu64 ", name=3D%s value=3D%s size= =3D%zd)\n", - ino, name, value, size); - } + fuse_log(FUSE_LOG_DEBUG, "lo_setxattr(ino=3D%" PRIu64 + ", name=3D%s value=3D%s size=3D%zd)\n", ino, name, value, siz= e); =20 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; } =20 - if (lo_debug(req)) { - fuse_log(FUSE_LOG_DEBUG, "lo_removexattr(ino=3D%" PRIu64 ", name= =3D%s)\n", - ino, name); - } + fuse_log(FUSE_LOG_DEBUG, "lo_removexattr(ino=3D%" PRIu64 ", name=3D%s)= \n", ino, + name); =20 if (inode->is_symlink) { /* Sorry, no race free way to setxattr on symlink. */ @@ -2303,6 +2268,10 @@ static void setup_nofile_rlimit(void) =20 static void log_func(enum fuse_log_level level, const char *fmt, va_list a= p) { + if (current_log_level < level) { + return; + } + if (use_syslog) { int priority =3D LOG_ERR; switch (level) { @@ -2401,8 +2370,19 @@ int main(int argc, char *argv[]) return 1; } =20 + /* + * 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 !=3D 0) { + current_log_level =3D opts.log_level; + } lo.debug =3D opts.debug; + if (lo.debug) { + current_log_level =3D FUSE_LOG_DEBUG; + } lo.root.refcount =3D 2; + if (lo.source) { struct stat stat; int res; --=20 2.24.1