Index: head/sbin/devd/devd.conf.5 =================================================================== --- head/sbin/devd/devd.conf.5 (revision 345726) +++ head/sbin/devd/devd.conf.5 (revision 345727) @@ -1,668 +1,672 @@ .\" .\" Copyright (c) 2002 M. Warner Losh .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. The name of the author may not be used to endorse or promote products .\" derived from this software without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" $FreeBSD$ .\" .\" The section on comments was taken from named.conf.5, which has the .\" following copyright: .\" Copyright (c) 1999-2000 by Internet Software Consortium .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS .\" ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE .\" CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL .\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR .\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS .\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS .\" SOFTWARE. .\" -.Dd July 20, 2018 +.Dd March 29, 2019 .Dt DEVD.CONF 5 .Os .Sh NAME .Nm devd.conf .Nd configuration file for .Xr devd 8 .Sh DESCRIPTION .Ss General Syntax A .Xr devd 8 configuration consists of two general features, statements and comments. All statements end with a semicolon. Many statements can contain substatements, which are also terminated with a semicolon. .Pp The following statements are supported: .Bl -tag -width ".Ic options" .It Ic attach Specifies various matching criteria and actions to perform when a newly attached device matches said criteria. .It Ic detach Specifies various matching criteria and actions to perform when a newly detached device matches said criteria. .It Ic nomatch Specifies various matching criteria and actions to perform when no device driver currently loaded in the kernel claims a (new) device. .It Ic notify Specifies various matching criteria and actions to perform when the kernel sends an event notification to userland. .It Ic options Specifies various options and parameters for the operation of .Xr devd 8 . .El .Pp Statements may occur in any order in the configuration file, and may be repeated as often as required. Further details on the syntax and meaning of each statement and their substatements are explained below. .Pp Each statement, except .Ic options has a priority (an arbitrary number) associated with it, where .Ql 0 is defined as the lowest priority. If two statements match the same event, only the action of the statement with highest priority will be executed. In this way generic statements can be overridden for devices or notifications that require special attention. .Pp The general syntax of a statement is: .Bd -literal -offset indent statement priority { substatement "value"; ... substatement "value"; }; .Ed .Ss Sub-statements The following sub-statements are supported within the .Ic options statement. .Bl -tag -width ".Ic directory" .It Ic directory Qq Ar /some/path ; Adds the given directory to the list of directories from which .Xr devd 8 will read all files named "*.conf" as further configuration files. Any number of .Ic directory statements can be used. .It Ic pid-file Qq Pa /var/run/devd.pid ; Specifies PID file. .It Ic set Ar regexp-name Qq Ar (some|regexp) ; Creates a regular expression and assigns it to the variable .Ar regexp-name . The variable is available throughout the rest of the configuration file. If the string begins with .Ql \&! , it matches if the regular expression formed by the rest of the string does not match. All regular expressions have an implicit .Ql ^$ around them. .El .Pp The following sub-statements are supported within the .Ic attach and .Ic detach statements. .Bl -tag -width ".Ic directory" .It Ic action Qq Ar command ; Command to execute upon a successful match. Example .Dq Li "/etc/pccard_ether $device-name start" . .It Ic class Qq Ar string ; This is shorthand for .Dq Ic match Qo Li class Qc Qq Ar string . .It Ic device-name Qq string ; This is shorthand for .Dq Ic match Qo Li device-name Qc Qq Ar string . This matches a device named .Ar string , which is allowed to be a regular expression or a variable previously created containing a regular expression. The .Dq Li device-name variable is available for later use with the .Ic action statement. .It Ic match Qo Ar variable Qc Qq Ar value ; Matches the content of .Ar value against .Ar variable ; the content of .Ar value may be a regular expression. Not required during .Ic attach nor .Ic detach events since the .Ic device-name statement takes care of all device matching. For a partial list of variables, see below. .It Ic media-type Qq Ar string ; For network devices, .Ic media-type will match devices that have the given media type. Valid media types are: .Dq Li Ethernet , .Dq Li Tokenring , .Dq Li FDDI , .Dq Li 802.11 , and .Dq Li ATM . .It Ic subdevice Qq Ar string ; This is shorthand for .Dq Ic match Qo Li subdevice Qc Qq Ar string . .El .Pp The following sub-statements are supported within the .Ic nomatch statement. .Bl -tag -width ".Ic directory" .It Ic action Qq Ar command ; Same as above. .It Ic match Qo Ar variable Qc Qq Ar value ; Matches the content of .Ar value against .Ar variable ; the content of .Ar value may be a regular expression. For a partial list of variables, see below. .El .Pp The following sub-statements are supported within the .Ic notify statement. The .Dq Li notify variable is available inside this statement and contains, a value, depending on which system and subsystem that delivered the event. .Bl -tag -width ".Ic directory" .It Ic action Qq Ar command ; Command to execute upon a successful match. Example .Dq Li "/etc/rc.d/power_profile $notify" . .It Ic match Qo Ar system | subsystem | type | notify Qc Qq Ar value ; Any number of .Ic match statements can exist within a .Ic notify statement; .Ar value can be either a fixed string or a regular expression. Below is a list of available systems, subsystems, and types. .It Ic media-type Qq Ar string ; See above. .El .Ss Variables that can be used with the match statement A partial list of variables and their possible values that can be used together with the .Ic match statement. The variables are published by the bus based on characteristics of the device that generated the event (for device events). Variables for other classes of events are dependent on those events. .Pp .Bl -tag -width ".Li manufacturer" -compact .It Ic Variable .Ic Description .It Li * The entire message from the current event. .It Li _ The entire message from the current event, after the initial type character. .It Li timestamp The time this event was processed, in seconds since 1970 dot fraction. .It Li bus Device name of parent bus. .It Li cdev Device node path if one is created by the .Xr devfs 5 filesystem. .It Li cisproduct CIS-product. .It Li cisvendor CIS-vendor. .It Li class Device class. .It Li comm Executable name (kernel). .It Li core Path to core file (kernel). .It Li device Device ID. .It Li devclass Device Class (USB). .It Li devsubclass Device Sub-class (USB). .It Li device-name Name of attached/detached device. .It Li endpoints Endpoint count (USB). .It Li function Card functions. .It Li interface Interface ID (USB). .It Li intclass Interface Class (USB). .It Li intprotocol Interface Protocol (USB). .It Li intsubclass Interface Sub-class (USB). .It Li jail Jail name for the process triggering the rule (RCTL). .It Li manufacturer Manufacturer ID (pccard). .It Li mode Peripheral mode (USB). .It Li notify Match the value of the .Dq Li notify variable. .It Li parent Parent device. .It Li pid PID of the process triggering the rule (RCTL). .It Li port Hub port number (USB). .It Li product Product ID (pccard/USB). .It Li release Hardware revision (USB). .It Li ruid Real UID of the process triggering the rule (RCTL). .It Li rule Rule (RCTL). .It Li sernum Serial Number (USB). .It Li slot Card slot. .It Li subvendor Sub-vendor ID. .It Li subdevice Sub-device ID. .It Li subsystem Matches a subsystem of a system, see below. .It Li system Matches a system type, see below. .It Li type Type of notification, see below. .It Li vendor Vendor ID. .El .Ss Notify matching A partial list of systems, subsystems, and types used within the .Ic notify mechanism. .Pp .Bl -tag -width ".Li coretemp" -compact .It Sy System .It Li ACPI Events related to the ACPI subsystem. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li ACAD AC line state ($notify=0x00 is offline, 0x01 is online). .It Li Button Button state ($notify=0x00 is power, 0x01 is sleep). .It Li CMBAT Battery events. .It Li Lid Lid state ($notify=0x00 is closed, 0x01 is open). .It Li PROCESSOR Processor state/configuration ($notify=0x81 is a change in available Cx states). .It Li Resume Resume notification. .It Li Suspend Suspend notification. .It Li Thermal Thermal zone events. .El .Pp .It Li CARP Events related to the .Xr carp 4 protocol. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Ar vhid@interface The .Dq subsystem contains the actual CARP vhid and the name of the network interface on which the event took place. .Bl -tag -width ".Li MASTER" -compact .It Sy Type .It Li MASTER Node become the master for a virtual host. .It Li BACKUP Node become the backup for a virtual host. .El .El .Pp .It Li IFNET Events related to the network subsystem. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Ar interface The .Dq subsystem is the actual name of the network interface on which the event took place. .Bl -tag -width ".Li LINK_DOWN" -compact .It Sy Type .It Li LINK_UP Carrier status changed to UP. .It Li LINK_DOWN Carrier status changed to DOWN. .It Li ATTACH The network interface is attached to the system. .It Li DETACH The network interface is detached from the system. .El .El .Pp .It Li DEVFS Events related to the .Xr devfs 5 filesystem. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li CDEV .Bl -tag -width ".Li DESTROY" -compact .It Sy Type .It Li CREATE The .Xr devfs 5 node is created. .It Li DESTROY The .Xr devfs 5 node is destroyed. .El .El .Pp .It Li GEOM Events related to the .Xr geom 4 framework. The difference compared to .Li DEVFS is that .Li GEOM only includes disk-like devices. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li DEV .Bl -tag -width ".Li MEDIACHANGE" -compact .It Sy Type .It Li CREATE A .Xr geom 4 -device node is created. +provider is created. .It Li DESTROY A .Xr geom 4 -device node is destroyed. +provider is destroyed. .It Li GEOM::physpath The physical path of a device has changed. .It Li MEDIACHANGE Physical media has changed. +.It Li SIZECHANGE +A +.Xr geom 4 +provider size has changed. .El .El .Pp .It Li RCTL Events related to the .Xr rctl 8 framework. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li rule .Bl -tag -width ".Li matched" -compact .It Sy Type .It Li matched A rule with action specified as "devctl" was triggered. .El .El .Pp .It Li USB Events related to the USB subsystem. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li DEVICE .Bl -tag -width ".Li DETACH" -compact .It Sy Type .It Li ATTACH USB device is attached to the system. .It Li DETACH USB device is detached from the system. .El .It Li INTERFACE .Bl -tag -width ".Li DETACH" -compact .It Sy Type .It Li ATTACH USB interface is attached to a device. .It Li DETACH USB interface is detached from a device. .El .El .Pp .It Li coretemp Events related to the .Xr coretemp 4 device. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li Thermal Notification that the CPU core has reached critical temperature. .Bl -tag -width ".Ar temperature" -compact .It Sy Type .It Ar temperature String containing the temperature of the core that has become too hot. .El .El .Pp .It Li kern Events related to the kernel. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li power .Bl -tag -width ".li resume" -compact .It Sy Type .It Li resume Notification that the system has woken from the suspended state. .El .El .Pp .It Li kernel More events related to the kernel. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li signal .Bl -tag -width ".li resume" -compact .It Sy Type .It Li coredump Notification that a process has crashed and dumped core. .El .El .Pp .It Li CAM Events related to the .Xr cam 4 system. .Bl -tag -width ".Sy Subsystem" -compact .It Sy Subsystem .It Li periph Events related to peripheral devices. .Bl -tag -width ".li timeout" -compact .It Sy Type .It Li error Generic errors. .It Li timeout Command timeouts. .El .El .El .Pp A link state change to UP on the interface .Dq Li fxp0 would result in the following notify event: .Bd -literal -offset indent system=IFNET, subsystem=fxp0, type=LINK_UP .Ed .Pp An AC line state change to .Dq offline would result in the following event: .Bd -literal -offset indent system=ACPI, subsystem=ACAD, notify=0x00 .Ed .Ss Comments Comments may appear anywhere that whitespace may appear in a configuration file. To appeal to programmers of all kinds, they can be written in C, C++, or shell/Perl constructs. .Pp C-style comments start with the two characters .Ql /* (slash, star) and end with .Ql */ (star, slash). Because they are completely delimited with these characters, they can be used to comment only a portion of a line or to span multiple lines. .Pp C-style comments cannot be nested. For example, the following is not valid because the entire comment ends with the first .Ql */ : .Bd -literal -offset indent /* This is the start of a comment. This is still part of the comment. /* This is an incorrect attempt at nesting a comment. */ This is no longer in any comment. */ .Ed .Pp C++-style comments start with the two characters .Ql // (slash, slash) and continue to the end of the physical line. They cannot be continued across multiple physical lines; to have one logical comment span multiple lines, each line must use the .Ql // pair. For example: .Bd -literal -offset indent // This is the start of a comment. The next line // is a new comment, even though it is logically // part of the previous comment. .Ed .Sh FILES .Bl -tag -width ".Pa /etc/devd.conf" -compact .It Pa /etc/devd.conf The .Xr devd 8 configuration file. .El .Sh EXAMPLES .Bd -literal # # This will catch link down events on the interfaces fxp0 and ath0 # notify 0 { match "system" "IFNET"; match "subsystem" "(fxp0|ath0)"; match "type" "LINK_DOWN"; action "logger $subsystem is DOWN"; }; # # Match lid open/close events # These can be combined to a single event, by passing the # value of $notify to the external script. # notify 0 { match "system" "ACPI"; match "subsystem" "Lid"; match "notify" "0x00"; action "logger Lid closed, we can sleep now!"; }; notify 0 { match "system" "ACPI"; match "subsystem" "Lid"; match "notify" "0x01"; action "logger Lid opened, the sleeper must awaken!"; }; # # Match a USB device type # notify 0 { match "system" "USB"; match "subsystem" "INTERFACE"; match "type" "ATTACH"; match "intclass" "0x0e"; action "logger USB video device attached"; }; # # Try to configure ath and wi devices with pccard_ether # as they are attached. # attach 0 { device-name "(ath|wi)[0-9]+"; action "/etc/pccard_ether $device-name start"; }; # # Stop ath and wi devices as they are detached from # the system. # detach 0 { device-name "(ath|wi)[0-9]+"; action "/etc/pccard_ether $device-name stop"; }; .Ed .Pp The installed .Pa /etc/devd.conf has many additional examples. .Sh SEE ALSO .Xr cam 4 , .Xr coretemp 4 , .Xr devfs 5 , .Xr re_format 7 , .Xr devd 8 Index: head/sys/geom/geom_dev.c =================================================================== --- head/sys/geom/geom_dev.c (revision 345726) +++ head/sys/geom/geom_dev.c (revision 345727) @@ -1,858 +1,869 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2002 Poul-Henning Kamp * Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by Poul-Henning Kamp * and NAI Labs, the Security Research Division of Network Associates, Inc. * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the * DARPA CHATS research program. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The names of the authors may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct g_dev_softc { struct mtx sc_mtx; struct cdev *sc_dev; struct cdev *sc_alias; int sc_open; u_int sc_active; #define SC_A_DESTROY (1 << 31) #define SC_A_OPEN (1 << 30) #define SC_A_ACTIVE (SC_A_OPEN - 1) }; static d_open_t g_dev_open; static d_close_t g_dev_close; static d_strategy_t g_dev_strategy; static d_ioctl_t g_dev_ioctl; static struct cdevsw g_dev_cdevsw = { .d_version = D_VERSION, .d_open = g_dev_open, .d_close = g_dev_close, .d_read = physread, .d_write = physwrite, .d_ioctl = g_dev_ioctl, .d_strategy = g_dev_strategy, .d_name = "g_dev", .d_flags = D_DISK | D_TRACKCLOSE, }; static g_init_t g_dev_init; static g_fini_t g_dev_fini; static g_taste_t g_dev_taste; static g_orphan_t g_dev_orphan; static g_attrchanged_t g_dev_attrchanged; +static g_resize_t g_dev_resize; static struct g_class g_dev_class = { .name = "DEV", .version = G_VERSION, .init = g_dev_init, .fini = g_dev_fini, .taste = g_dev_taste, .orphan = g_dev_orphan, - .attrchanged = g_dev_attrchanged + .attrchanged = g_dev_attrchanged, + .resize = g_dev_resize }; /* * We target 262144 (8 x 32768) sectors by default as this significantly * increases the throughput on commonly used SSD's with a marginal * increase in non-interruptible request latency. */ static uint64_t g_dev_del_max_sectors = 262144; SYSCTL_DECL(_kern_geom); SYSCTL_NODE(_kern_geom, OID_AUTO, dev, CTLFLAG_RW, 0, "GEOM_DEV stuff"); SYSCTL_QUAD(_kern_geom_dev, OID_AUTO, delete_max_sectors, CTLFLAG_RW, &g_dev_del_max_sectors, 0, "Maximum number of sectors in a single " "delete request sent to the provider. Larger requests are chunked " "so they can be interrupted. (0 = disable chunking)"); static char *dumpdev = NULL; static void g_dev_init(struct g_class *mp) { dumpdev = kern_getenv("dumpdev"); } static void g_dev_fini(struct g_class *mp) { freeenv(dumpdev); dumpdev = NULL; } static int g_dev_setdumpdev(struct cdev *dev, struct diocskerneldump_arg *kda, struct thread *td) { struct g_kerneldump kd; struct g_consumer *cp; int error, len; if (dev == NULL || kda == NULL) return (clear_dumper(td)); cp = dev->si_drv2; len = sizeof(kd); memset(&kd, 0, len); kd.offset = 0; kd.length = OFF_MAX; error = g_io_getattr("GEOM::kerneldump", cp, &len, &kd); if (error != 0) return (error); error = set_dumper(&kd.di, devtoname(dev), td, kda->kda_compression, kda->kda_encryption, kda->kda_key, kda->kda_encryptedkeysize, kda->kda_encryptedkey); if (error == 0) dev->si_flags |= SI_DUMPDEV; return (error); } static int init_dumpdev(struct cdev *dev) { struct diocskerneldump_arg kda; struct g_consumer *cp; const char *devprefix = "/dev/", *devname; int error; size_t len; bzero(&kda, sizeof(kda)); kda.kda_enable = 1; if (dumpdev == NULL) return (0); len = strlen(devprefix); devname = devtoname(dev); if (strcmp(devname, dumpdev) != 0 && (strncmp(dumpdev, devprefix, len) != 0 || strcmp(devname, dumpdev + len) != 0)) return (0); cp = (struct g_consumer *)dev->si_drv2; error = g_access(cp, 1, 0, 0); if (error != 0) return (error); error = g_dev_setdumpdev(dev, &kda, curthread); if (error == 0) { freeenv(dumpdev); dumpdev = NULL; } (void)g_access(cp, -1, 0, 0); return (error); } static void g_dev_destroy(void *arg, int flags __unused) { struct g_consumer *cp; struct g_geom *gp; struct g_dev_softc *sc; char buf[SPECNAMELEN + 6]; g_topology_assert(); cp = arg; gp = cp->geom; sc = cp->private; g_trace(G_T_TOPOLOGY, "g_dev_destroy(%p(%s))", cp, gp->name); snprintf(buf, sizeof(buf), "cdev=%s", gp->name); devctl_notify_f("GEOM", "DEV", "DESTROY", buf, M_WAITOK); if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) g_access(cp, -cp->acr, -cp->acw, -cp->ace); g_detach(cp); g_destroy_consumer(cp); g_destroy_geom(gp); mtx_destroy(&sc->sc_mtx); g_free(sc); } void g_dev_print(void) { struct g_geom *gp; char const *p = ""; LIST_FOREACH(gp, &g_dev_class.geom, geom) { printf("%s%s", p, gp->name); p = " "; } printf("\n"); } static void g_dev_set_physpath(struct g_consumer *cp) { struct g_dev_softc *sc; char *physpath; int error, physpath_len; if (g_access(cp, 1, 0, 0) != 0) return; sc = cp->private; physpath_len = MAXPATHLEN; physpath = g_malloc(physpath_len, M_WAITOK|M_ZERO); error = g_io_getattr("GEOM::physpath", cp, &physpath_len, physpath); g_access(cp, -1, 0, 0); if (error == 0 && strlen(physpath) != 0) { struct cdev *dev, *old_alias_dev; struct cdev **alias_devp; dev = sc->sc_dev; old_alias_dev = sc->sc_alias; alias_devp = (struct cdev **)&sc->sc_alias; make_dev_physpath_alias(MAKEDEV_WAITOK, alias_devp, dev, old_alias_dev, physpath); } else if (sc->sc_alias) { destroy_dev((struct cdev *)sc->sc_alias); sc->sc_alias = NULL; } g_free(physpath); } static void g_dev_set_media(struct g_consumer *cp) { struct g_dev_softc *sc; struct cdev *dev; char buf[SPECNAMELEN + 6]; sc = cp->private; dev = sc->sc_dev; snprintf(buf, sizeof(buf), "cdev=%s", dev->si_name); devctl_notify_f("DEVFS", "CDEV", "MEDIACHANGE", buf, M_WAITOK); devctl_notify_f("GEOM", "DEV", "MEDIACHANGE", buf, M_WAITOK); dev = sc->sc_alias; if (dev != NULL) { snprintf(buf, sizeof(buf), "cdev=%s", dev->si_name); devctl_notify_f("DEVFS", "CDEV", "MEDIACHANGE", buf, M_WAITOK); devctl_notify_f("GEOM", "DEV", "MEDIACHANGE", buf, M_WAITOK); } } static void g_dev_attrchanged(struct g_consumer *cp, const char *attr) { if (strcmp(attr, "GEOM::media") == 0) { g_dev_set_media(cp); return; } if (strcmp(attr, "GEOM::physpath") == 0) { g_dev_set_physpath(cp); return; } +} + +static void +g_dev_resize(struct g_consumer *cp) +{ + char buf[SPECNAMELEN + 6]; + + snprintf(buf, sizeof(buf), "cdev=%s", cp->provider->name); + devctl_notify_f("GEOM", "DEV", "SIZECHANGE", buf, M_WAITOK); } struct g_provider * g_dev_getprovider(struct cdev *dev) { struct g_consumer *cp; g_topology_assert(); if (dev == NULL) return (NULL); if (dev->si_devsw != &g_dev_cdevsw) return (NULL); cp = dev->si_drv2; return (cp->provider); } static struct g_geom * g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused) { struct g_geom *gp; struct g_geom_alias *gap; struct g_consumer *cp; struct g_dev_softc *sc; int error; struct cdev *dev, *adev; char buf[SPECNAMELEN + 6]; g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name); g_topology_assert(); gp = g_new_geomf(mp, "%s", pp->name); sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); mtx_init(&sc->sc_mtx, "g_dev", NULL, MTX_DEF); cp = g_new_consumer(gp); cp->private = sc; cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; error = g_attach(cp, pp); KASSERT(error == 0, ("g_dev_taste(%s) failed to g_attach, err=%d", pp->name, error)); error = make_dev_p(MAKEDEV_CHECKNAME | MAKEDEV_WAITOK, &dev, &g_dev_cdevsw, NULL, UID_ROOT, GID_OPERATOR, 0640, "%s", gp->name); if (error != 0) { printf("%s: make_dev_p() failed (gp->name=%s, error=%d)\n", __func__, gp->name, error); g_detach(cp); g_destroy_consumer(cp); g_destroy_geom(gp); mtx_destroy(&sc->sc_mtx); g_free(sc); return (NULL); } dev->si_flags |= SI_UNMAPPED; sc->sc_dev = dev; dev->si_iosize_max = MAXPHYS; dev->si_drv2 = cp; error = init_dumpdev(dev); if (error != 0) printf("%s: init_dumpdev() failed (gp->name=%s, error=%d)\n", __func__, gp->name, error); g_dev_attrchanged(cp, "GEOM::physpath"); snprintf(buf, sizeof(buf), "cdev=%s", gp->name); devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK); /* * Now add all the aliases for this drive */ LIST_FOREACH(gap, &pp->geom->aliases, ga_next) { error = make_dev_alias_p(MAKEDEV_CHECKNAME | MAKEDEV_WAITOK, &adev, dev, "%s", gap->ga_alias); if (error) { printf("%s: make_dev_alias_p() failed (name=%s, error=%d)\n", __func__, gap->ga_alias, error); continue; } snprintf(buf, sizeof(buf), "cdev=%s", gap->ga_alias); devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK); } return (gp); } static int g_dev_open(struct cdev *dev, int flags, int fmt, struct thread *td) { struct g_consumer *cp; struct g_dev_softc *sc; int error, r, w, e; cp = dev->si_drv2; if (cp == NULL) return (ENXIO); /* g_dev_taste() not done yet */ g_trace(G_T_ACCESS, "g_dev_open(%s, %d, %d, %p)", cp->geom->name, flags, fmt, td); r = flags & FREAD ? 1 : 0; w = flags & FWRITE ? 1 : 0; #ifdef notyet e = flags & O_EXCL ? 1 : 0; #else e = 0; #endif /* * This happens on attempt to open a device node with O_EXEC. */ if (r + w + e == 0) return (EINVAL); if (w) { /* * When running in very secure mode, do not allow * opens for writing of any disks. */ error = securelevel_ge(td->td_ucred, 2); if (error) return (error); } g_topology_lock(); error = g_access(cp, r, w, e); g_topology_unlock(); if (error == 0) { sc = cp->private; mtx_lock(&sc->sc_mtx); if (sc->sc_open == 0 && (sc->sc_active & SC_A_ACTIVE) != 0) wakeup(&sc->sc_active); sc->sc_open += r + w + e; if (sc->sc_open == 0) atomic_clear_int(&sc->sc_active, SC_A_OPEN); else atomic_set_int(&sc->sc_active, SC_A_OPEN); mtx_unlock(&sc->sc_mtx); } return (error); } static int g_dev_close(struct cdev *dev, int flags, int fmt, struct thread *td) { struct g_consumer *cp; struct g_dev_softc *sc; int error, r, w, e; cp = dev->si_drv2; if (cp == NULL) return (ENXIO); g_trace(G_T_ACCESS, "g_dev_close(%s, %d, %d, %p)", cp->geom->name, flags, fmt, td); r = flags & FREAD ? -1 : 0; w = flags & FWRITE ? -1 : 0; #ifdef notyet e = flags & O_EXCL ? -1 : 0; #else e = 0; #endif /* * The vgonel(9) - caused by eg. forced unmount of devfs - calls * VOP_CLOSE(9) on devfs vnode without any FREAD or FWRITE flags, * which would result in zero deltas, which in turn would cause * panic in g_access(9). * * Note that we cannot zero the counters (ie. do "r = cp->acr" * etc) instead, because the consumer might be opened in another * devfs instance. */ if (r + w + e == 0) return (EINVAL); sc = cp->private; mtx_lock(&sc->sc_mtx); sc->sc_open += r + w + e; if (sc->sc_open == 0) atomic_clear_int(&sc->sc_active, SC_A_OPEN); else atomic_set_int(&sc->sc_active, SC_A_OPEN); while (sc->sc_open == 0 && (sc->sc_active & SC_A_ACTIVE) != 0) msleep(&sc->sc_active, &sc->sc_mtx, 0, "g_dev_close", hz / 10); mtx_unlock(&sc->sc_mtx); g_topology_lock(); error = g_access(cp, r, w, e); g_topology_unlock(); return (error); } /* * XXX: Until we have unmessed the ioctl situation, there is a race against * XXX: a concurrent orphanization. We cannot close it by holding topology * XXX: since that would prevent us from doing our job, and stalling events * XXX: will break (actually: stall) the BSD disklabel hacks. */ static int g_dev_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td) { struct g_consumer *cp; struct g_provider *pp; off_t offset, length, chunk, odd; int i, error; cp = dev->si_drv2; pp = cp->provider; error = 0; KASSERT(cp->acr || cp->acw, ("Consumer with zero access count in g_dev_ioctl")); i = IOCPARM_LEN(cmd); switch (cmd) { case DIOCGSECTORSIZE: *(u_int *)data = cp->provider->sectorsize; if (*(u_int *)data == 0) error = ENOENT; break; case DIOCGMEDIASIZE: *(off_t *)data = cp->provider->mediasize; if (*(off_t *)data == 0) error = ENOENT; break; case DIOCGFWSECTORS: error = g_io_getattr("GEOM::fwsectors", cp, &i, data); if (error == 0 && *(u_int *)data == 0) error = ENOENT; break; case DIOCGFWHEADS: error = g_io_getattr("GEOM::fwheads", cp, &i, data); if (error == 0 && *(u_int *)data == 0) error = ENOENT; break; case DIOCGFRONTSTUFF: error = g_io_getattr("GEOM::frontstuff", cp, &i, data); break; #ifdef COMPAT_FREEBSD11 case DIOCSKERNELDUMP_FREEBSD11: { struct diocskerneldump_arg kda; bzero(&kda, sizeof(kda)); kda.kda_encryption = KERNELDUMP_ENC_NONE; kda.kda_enable = (uint8_t)*(u_int *)data; if (kda.kda_enable == 0) error = g_dev_setdumpdev(NULL, NULL, td); else error = g_dev_setdumpdev(dev, &kda, td); break; } #endif case DIOCSKERNELDUMP: { struct diocskerneldump_arg *kda; uint8_t *encryptedkey; kda = (struct diocskerneldump_arg *)data; if (kda->kda_enable == 0) { error = g_dev_setdumpdev(NULL, NULL, td); break; } if (kda->kda_encryption != KERNELDUMP_ENC_NONE) { if (kda->kda_encryptedkeysize <= 0 || kda->kda_encryptedkeysize > KERNELDUMP_ENCKEY_MAX_SIZE) { return (EINVAL); } encryptedkey = malloc(kda->kda_encryptedkeysize, M_TEMP, M_WAITOK); error = copyin(kda->kda_encryptedkey, encryptedkey, kda->kda_encryptedkeysize); } else { encryptedkey = NULL; } if (error == 0) { kda->kda_encryptedkey = encryptedkey; error = g_dev_setdumpdev(dev, kda, td); } if (encryptedkey != NULL) { explicit_bzero(encryptedkey, kda->kda_encryptedkeysize); free(encryptedkey, M_TEMP); } explicit_bzero(kda, sizeof(*kda)); break; } case DIOCGFLUSH: error = g_io_flush(cp); break; case DIOCGDELETE: offset = ((off_t *)data)[0]; length = ((off_t *)data)[1]; if ((offset % cp->provider->sectorsize) != 0 || (length % cp->provider->sectorsize) != 0 || length <= 0) { printf("%s: offset=%jd length=%jd\n", __func__, offset, length); error = EINVAL; break; } if ((cp->provider->mediasize > 0) && (offset >= cp->provider->mediasize)) { /* * Catch out-of-bounds requests here. The problem is * that due to historical GEOM I/O implementation * peculatities, g_delete_data() would always return * success for requests starting just the next byte * after providers media boundary. Condition check on * non-zero media size, since that condition would * (most likely) cause ENXIO instead. */ error = EIO; break; } while (length > 0) { chunk = length; if (g_dev_del_max_sectors != 0 && chunk > g_dev_del_max_sectors * cp->provider->sectorsize) { chunk = g_dev_del_max_sectors * cp->provider->sectorsize; if (cp->provider->stripesize > 0) { odd = (offset + chunk + cp->provider->stripeoffset) % cp->provider->stripesize; if (chunk > odd) chunk -= odd; } } error = g_delete_data(cp, offset, chunk); length -= chunk; offset += chunk; if (error) break; /* * Since the request size can be large, the service * time can be is likewise. We make this ioctl * interruptible by checking for signals for each bio. */ if (SIGPENDING(td)) break; } break; case DIOCGIDENT: error = g_io_getattr("GEOM::ident", cp, &i, data); break; case DIOCGPROVIDERNAME: if (pp == NULL) return (ENOENT); strlcpy(data, pp->name, i); break; case DIOCGSTRIPESIZE: *(off_t *)data = cp->provider->stripesize; break; case DIOCGSTRIPEOFFSET: *(off_t *)data = cp->provider->stripeoffset; break; case DIOCGPHYSPATH: error = g_io_getattr("GEOM::physpath", cp, &i, data); if (error == 0 && *(char *)data == '\0') error = ENOENT; break; case DIOCGATTR: { struct diocgattr_arg *arg = (struct diocgattr_arg *)data; if (arg->len > sizeof(arg->value)) { error = EINVAL; break; } error = g_io_getattr(arg->name, cp, &arg->len, &arg->value); break; } case DIOCZONECMD: { struct disk_zone_args *zone_args =(struct disk_zone_args *)data; struct disk_zone_rep_entry *new_entries, *old_entries; struct disk_zone_report *rep; size_t alloc_size; old_entries = NULL; new_entries = NULL; rep = NULL; alloc_size = 0; if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES) { rep = &zone_args->zone_params.report; #define MAXENTRIES (MAXPHYS / sizeof(struct disk_zone_rep_entry)) if (rep->entries_allocated > MAXENTRIES) rep->entries_allocated = MAXENTRIES; alloc_size = rep->entries_allocated * sizeof(struct disk_zone_rep_entry); if (alloc_size != 0) new_entries = g_malloc(alloc_size, M_WAITOK| M_ZERO); old_entries = rep->entries; rep->entries = new_entries; } error = g_io_zonecmd(zone_args, cp); if (zone_args->zone_cmd == DISK_ZONE_REPORT_ZONES && alloc_size != 0 && error == 0) error = copyout(new_entries, old_entries, alloc_size); if (old_entries != NULL && rep != NULL) rep->entries = old_entries; if (new_entries != NULL) g_free(new_entries); break; } default: if (cp->provider->geom->ioctl != NULL) { error = cp->provider->geom->ioctl(cp->provider, cmd, data, fflag, td); } else { error = ENOIOCTL; } } return (error); } static void g_dev_done(struct bio *bp2) { struct g_consumer *cp; struct g_dev_softc *sc; struct bio *bp; int active; cp = bp2->bio_from; sc = cp->private; bp = bp2->bio_parent; bp->bio_error = bp2->bio_error; bp->bio_completed = bp2->bio_completed; bp->bio_resid = bp->bio_length - bp2->bio_completed; if (bp2->bio_cmd == BIO_ZONE) bcopy(&bp2->bio_zone, &bp->bio_zone, sizeof(bp->bio_zone)); if (bp2->bio_error != 0) { g_trace(G_T_BIO, "g_dev_done(%p) had error %d", bp2, bp2->bio_error); bp->bio_flags |= BIO_ERROR; } else { g_trace(G_T_BIO, "g_dev_done(%p/%p) resid %ld completed %jd", bp2, bp, bp2->bio_resid, (intmax_t)bp2->bio_completed); } g_destroy_bio(bp2); active = atomic_fetchadd_int(&sc->sc_active, -1) - 1; if ((active & SC_A_ACTIVE) == 0) { if ((active & SC_A_OPEN) == 0) wakeup(&sc->sc_active); if (active & SC_A_DESTROY) g_post_event(g_dev_destroy, cp, M_NOWAIT, NULL); } biodone(bp); } static void g_dev_strategy(struct bio *bp) { struct g_consumer *cp; struct bio *bp2; struct cdev *dev; struct g_dev_softc *sc; KASSERT(bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE || bp->bio_cmd == BIO_DELETE || bp->bio_cmd == BIO_FLUSH || bp->bio_cmd == BIO_ZONE, ("Wrong bio_cmd bio=%p cmd=%d", bp, bp->bio_cmd)); dev = bp->bio_dev; cp = dev->si_drv2; sc = cp->private; KASSERT(cp->acr || cp->acw, ("Consumer with zero access count in g_dev_strategy")); biotrack(bp, __func__); #ifdef INVARIANTS if ((bp->bio_offset % cp->provider->sectorsize) != 0 || (bp->bio_bcount % cp->provider->sectorsize) != 0) { bp->bio_resid = bp->bio_bcount; biofinish(bp, NULL, EINVAL); return; } #endif KASSERT(sc->sc_open > 0, ("Closed device in g_dev_strategy")); atomic_add_int(&sc->sc_active, 1); for (;;) { /* * XXX: This is not an ideal solution, but I believe it to * XXX: deadlock safely, all things considered. */ bp2 = g_clone_bio(bp); if (bp2 != NULL) break; pause("gdstrat", hz / 10); } KASSERT(bp2 != NULL, ("XXX: ENOMEM in a bad place")); bp2->bio_done = g_dev_done; g_trace(G_T_BIO, "g_dev_strategy(%p/%p) offset %jd length %jd data %p cmd %d", bp, bp2, (intmax_t)bp->bio_offset, (intmax_t)bp2->bio_length, bp2->bio_data, bp2->bio_cmd); g_io_request(bp2, cp); KASSERT(cp->acr || cp->acw, ("g_dev_strategy raced with g_dev_close and lost")); } /* * g_dev_callback() * * Called by devfs when asynchronous device destruction is completed. * - Mark that we have no attached device any more. * - If there are no outstanding requests, schedule geom destruction. * Otherwise destruction will be scheduled later by g_dev_done(). */ static void g_dev_callback(void *arg) { struct g_consumer *cp; struct g_dev_softc *sc; int active; cp = arg; sc = cp->private; g_trace(G_T_TOPOLOGY, "g_dev_callback(%p(%s))", cp, cp->geom->name); sc->sc_dev = NULL; sc->sc_alias = NULL; active = atomic_fetchadd_int(&sc->sc_active, SC_A_DESTROY); if ((active & SC_A_ACTIVE) == 0) g_post_event(g_dev_destroy, cp, M_WAITOK, NULL); } /* * g_dev_orphan() * * Called from below when the provider orphaned us. * - Clear any dump settings. * - Request asynchronous device destruction to prevent any more requests * from coming in. The provider is already marked with an error, so * anything which comes in the interim will be returned immediately. */ static void g_dev_orphan(struct g_consumer *cp) { struct cdev *dev; struct g_dev_softc *sc; g_topology_assert(); sc = cp->private; dev = sc->sc_dev; g_trace(G_T_TOPOLOGY, "g_dev_orphan(%p(%s))", cp, cp->geom->name); /* Reset any dump-area set on this device */ if (dev->si_flags & SI_DUMPDEV) (void)clear_dumper(curthread); /* Destroy the struct cdev *so we get no more requests */ destroy_dev_sched_cb(dev, g_dev_callback, cp); } DECLARE_GEOM_CLASS(g_dev_class, g_dev);