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Editing: g_nop.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> * Copyright (c) 2019 Mariusz Zaborski <oshogbo@FreeBSD.org> * 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. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/ctype.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/bio.h> #include <sys/sbuf.h> #include <sys/sysctl.h> #include <sys/malloc.h> #include <geom/geom.h> #include <geom/geom_dbg.h> #include <geom/nop/g_nop.h> SYSCTL_DECL(_kern_geom); static SYSCTL_NODE(_kern_geom, OID_AUTO, nop, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "GEOM_NOP stuff"); static u_int g_nop_debug = 0; SYSCTL_UINT(_kern_geom_nop, OID_AUTO, debug, CTLFLAG_RW, &g_nop_debug, 0, "Debug level"); static int g_nop_destroy(struct g_geom *gp, boolean_t force); static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp); static void g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb); static g_access_t g_nop_access; static g_dumpconf_t g_nop_dumpconf; static g_orphan_t g_nop_orphan; static g_provgone_t g_nop_providergone; static g_resize_t g_nop_resize; static g_start_t g_nop_start; struct g_class g_nop_class = { .name = G_NOP_CLASS_NAME, .version = G_VERSION, .ctlreq = g_nop_config, .destroy_geom = g_nop_destroy_geom, .access = g_nop_access, .dumpconf = g_nop_dumpconf, .orphan = g_nop_orphan, .providergone = g_nop_providergone, .resize = g_nop_resize, .start = g_nop_start, }; struct g_nop_delay { struct callout dl_cal; struct bio *dl_bio; TAILQ_ENTRY(g_nop_delay) dl_next; }; static bool g_nop_verify_nprefix(const char *name) { int i; for (i = 0; i < strlen(name); i++) { if (isalpha(name[i]) == 0 && isdigit(name[i]) == 0) { return (false); } } return (true); } static void g_nop_orphan(struct g_consumer *cp) { g_topology_assert(); g_nop_destroy(cp->geom, 1); } static void g_nop_resize(struct g_consumer *cp) { struct g_nop_softc *sc; struct g_geom *gp; struct g_provider *pp; off_t size; g_topology_assert(); gp = cp->geom; sc = gp->softc; if (sc->sc_explicitsize != 0) return; if (cp->provider->mediasize < sc->sc_offset) { g_nop_destroy(gp, 1); return; } size = cp->provider->mediasize - sc->sc_offset; LIST_FOREACH(pp, &gp->provider, provider) g_resize_provider(pp, size); } static int g_nop_dumper(void *priv, void *virtual, vm_offset_t physical, off_t offset, size_t length) { return (0); } static void g_nop_kerneldump(struct bio *bp, struct g_nop_softc *sc) { struct g_kerneldump *gkd; struct g_geom *gp; struct g_provider *pp; gkd = (struct g_kerneldump *)bp->bio_data; gp = bp->bio_to->geom; g_trace(G_T_TOPOLOGY, "%s(%s, %jd, %jd)", __func__, gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length); pp = LIST_FIRST(&gp->provider); gkd->di.dumper = g_nop_dumper; gkd->di.priv = sc; gkd->di.blocksize = pp->sectorsize; gkd->di.maxiosize = DFLTPHYS; gkd->di.mediaoffset = sc->sc_offset + gkd->offset; if (gkd->offset > sc->sc_explicitsize) { g_io_deliver(bp, ENODEV); return; } if (gkd->offset + gkd->length > sc->sc_explicitsize) gkd->length = sc->sc_explicitsize - gkd->offset; gkd->di.mediasize = gkd->length; g_io_deliver(bp, 0); } static void g_nop_pass(struct bio *cbp, struct g_geom *gp) { G_NOP_LOGREQ(cbp, "Sending request."); g_io_request(cbp, LIST_FIRST(&gp->consumer)); } static void g_nop_pass_timeout(void *data) { struct g_nop_softc *sc; struct g_geom *gp; struct g_nop_delay *gndelay; gndelay = (struct g_nop_delay *)data; gp = gndelay->dl_bio->bio_to->geom; sc = gp->softc; mtx_lock(&sc->sc_lock); TAILQ_REMOVE(&sc->sc_head_delay, gndelay, dl_next); mtx_unlock(&sc->sc_lock); g_nop_pass(gndelay->dl_bio, gp); g_free(data); } static void g_nop_start(struct bio *bp) { struct g_nop_softc *sc; struct g_geom *gp; struct g_provider *pp; struct bio *cbp; u_int failprob, delayprob, delaytime; failprob = delayprob = delaytime = 0; gp = bp->bio_to->geom; sc = gp->softc; G_NOP_LOGREQ(bp, "Request received."); mtx_lock(&sc->sc_lock); switch (bp->bio_cmd) { case BIO_READ: sc->sc_reads++; sc->sc_readbytes += bp->bio_length; if (sc->sc_count_until_fail != 0) { sc->sc_count_until_fail -= 1; } else { failprob = sc->sc_rfailprob; delayprob = sc->sc_rdelayprob; delaytime = sc->sc_delaymsec; } break; case BIO_WRITE: sc->sc_writes++; sc->sc_wrotebytes += bp->bio_length; if (sc->sc_count_until_fail != 0) { sc->sc_count_until_fail -= 1; } else { failprob = sc->sc_wfailprob; delayprob = sc->sc_wdelayprob; delaytime = sc->sc_delaymsec; } break; case BIO_DELETE: sc->sc_deletes++; break; case BIO_GETATTR: sc->sc_getattrs++; if (sc->sc_physpath && g_handleattr_str(bp, "GEOM::physpath", sc->sc_physpath)) ; else if (strcmp(bp->bio_attribute, "GEOM::kerneldump") == 0) g_nop_kerneldump(bp, sc); else /* * Fallthrough to forwarding the GETATTR down to the * lower level device. */ break; mtx_unlock(&sc->sc_lock); return; case BIO_FLUSH: sc->sc_flushes++; break; case BIO_SPEEDUP: sc->sc_speedups++; break; case BIO_CMD0: sc->sc_cmd0s++; break; case BIO_CMD1: sc->sc_cmd1s++; break; case BIO_CMD2: sc->sc_cmd2s++; break; } mtx_unlock(&sc->sc_lock); if (failprob > 0) { u_int rval; rval = arc4random() % 100; if (rval < failprob) { G_NOP_LOGREQLVL(1, bp, "Returning error=%d.", sc->sc_error); g_io_deliver(bp, sc->sc_error); return; } } cbp = g_clone_bio(bp); if (cbp == NULL) { g_io_deliver(bp, ENOMEM); return; } cbp->bio_done = g_std_done; cbp->bio_offset = bp->bio_offset + sc->sc_offset; pp = LIST_FIRST(&gp->provider); KASSERT(pp != NULL, ("NULL pp")); cbp->bio_to = pp; if (delayprob > 0) { struct g_nop_delay *gndelay; u_int rval; rval = arc4random() % 100; if (rval < delayprob) { gndelay = g_malloc(sizeof(*gndelay), M_NOWAIT | M_ZERO); if (gndelay != NULL) { callout_init(&gndelay->dl_cal, 1); gndelay->dl_bio = cbp; mtx_lock(&sc->sc_lock); TAILQ_INSERT_TAIL(&sc->sc_head_delay, gndelay, dl_next); mtx_unlock(&sc->sc_lock); callout_reset(&gndelay->dl_cal, MSEC_2_TICKS(delaytime), g_nop_pass_timeout, gndelay); return; } } } g_nop_pass(cbp, gp); } static int g_nop_access(struct g_provider *pp, int dr, int dw, int de) { struct g_geom *gp; struct g_consumer *cp; int error; gp = pp->geom; cp = LIST_FIRST(&gp->consumer); error = g_access(cp, dr, dw, de); return (error); } static int g_nop_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp, const char *gnopname, int ioerror, u_int count_until_fail, u_int rfailprob, u_int wfailprob, u_int delaymsec, u_int rdelayprob, u_int wdelayprob, off_t offset, off_t size, u_int secsize, off_t stripesize, off_t stripeoffset, const char *physpath) { struct g_nop_softc *sc; struct g_geom *gp; struct g_provider *newpp; struct g_consumer *cp; struct g_geom_alias *gap; char name[64]; int error, n; off_t explicitsize; g_topology_assert(); gp = NULL; newpp = NULL; cp = NULL; if ((offset % pp->sectorsize) != 0) { gctl_error(req, "Invalid offset for provider %s.", pp->name); return (EINVAL); } if ((size % pp->sectorsize) != 0) { gctl_error(req, "Invalid size for provider %s.", pp->name); return (EINVAL); } if (offset >= pp->mediasize) { gctl_error(req, "Invalid offset for provider %s.", pp->name); return (EINVAL); } explicitsize = size; if (size == 0) size = pp->mediasize - offset; if (offset + size > pp->mediasize) { gctl_error(req, "Invalid size for provider %s.", pp->name); return (EINVAL); } if (secsize == 0) secsize = pp->sectorsize; else if ((secsize % pp->sectorsize) != 0) { gctl_error(req, "Invalid secsize for provider %s.", pp->name); return (EINVAL); } if (secsize > maxphys) { gctl_error(req, "secsize is too big."); return (EINVAL); } size -= size % secsize; if ((stripesize % pp->sectorsize) != 0) { gctl_error(req, "Invalid stripesize for provider %s.", pp->name); return (EINVAL); } if ((stripeoffset % pp->sectorsize) != 0) { gctl_error(req, "Invalid stripeoffset for provider %s.", pp->name); return (EINVAL); } if (stripesize != 0 && stripeoffset >= stripesize) { gctl_error(req, "stripeoffset is too big."); return (EINVAL); } if (gnopname != NULL && !g_nop_verify_nprefix(gnopname)) { gctl_error(req, "Name %s is invalid.", gnopname); return (EINVAL); } if (gnopname != NULL) { n = snprintf(name, sizeof(name), "%s%s", gnopname, G_NOP_SUFFIX); } else { n = snprintf(name, sizeof(name), "%s%s", pp->name, G_NOP_SUFFIX); } if (n <= 0 || n >= sizeof(name)) { gctl_error(req, "Invalid provider name."); return (EINVAL); } LIST_FOREACH(gp, &mp->geom, geom) { if (strcmp(gp->name, name) == 0) { gctl_error(req, "Provider %s already exists.", name); return (EEXIST); } } gp = g_new_geomf(mp, "%s", name); sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); sc->sc_offset = offset; sc->sc_explicitsize = explicitsize; sc->sc_stripesize = stripesize; sc->sc_stripeoffset = stripeoffset; if (physpath && strcmp(physpath, G_NOP_PHYSPATH_PASSTHROUGH)) { sc->sc_physpath = strndup(physpath, MAXPATHLEN, M_GEOM); } else sc->sc_physpath = NULL; sc->sc_error = ioerror; sc->sc_count_until_fail = count_until_fail; sc->sc_rfailprob = rfailprob; sc->sc_wfailprob = wfailprob; sc->sc_delaymsec = delaymsec; sc->sc_rdelayprob = rdelayprob; sc->sc_wdelayprob = wdelayprob; sc->sc_reads = 0; sc->sc_writes = 0; sc->sc_deletes = 0; sc->sc_getattrs = 0; sc->sc_flushes = 0; sc->sc_speedups = 0; sc->sc_cmd0s = 0; sc->sc_cmd1s = 0; sc->sc_cmd2s = 0; sc->sc_readbytes = 0; sc->sc_wrotebytes = 0; TAILQ_INIT(&sc->sc_head_delay); mtx_init(&sc->sc_lock, "gnop lock", NULL, MTX_DEF); gp->softc = sc; newpp = g_new_providerf(gp, "%s", gp->name); newpp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE; newpp->mediasize = size; newpp->sectorsize = secsize; newpp->stripesize = stripesize; newpp->stripeoffset = stripeoffset; LIST_FOREACH(gap, &pp->aliases, ga_next) g_provider_add_alias(newpp, "%s%s", gap->ga_alias, G_NOP_SUFFIX); cp = g_new_consumer(gp); cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE; error = g_attach(cp, pp); if (error != 0) { gctl_error(req, "Cannot attach to provider %s.", pp->name); goto fail; } newpp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED; g_error_provider(newpp, 0); G_NOP_DEBUG(0, "Device %s created.", gp->name); return (0); fail: if (cp->provider != NULL) g_detach(cp); g_destroy_consumer(cp); g_destroy_provider(newpp); mtx_destroy(&sc->sc_lock); free(sc->sc_physpath, M_GEOM); g_free(gp->softc); g_destroy_geom(gp); return (error); } static void g_nop_providergone(struct g_provider *pp) { struct g_geom *gp = pp->geom; struct g_nop_softc *sc = gp->softc; KASSERT(TAILQ_EMPTY(&sc->sc_head_delay), ("delayed request list is not empty")); gp->softc = NULL; free(sc->sc_physpath, M_GEOM); mtx_destroy(&sc->sc_lock); g_free(sc); } static int g_nop_destroy(struct g_geom *gp, boolean_t force) { struct g_nop_softc *sc; struct g_provider *pp; g_topology_assert(); sc = gp->softc; if (sc == NULL) return (ENXIO); pp = LIST_FIRST(&gp->provider); if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { if (force) { G_NOP_DEBUG(0, "Device %s is still open, so it " "can't be definitely removed.", pp->name); } else { G_NOP_DEBUG(1, "Device %s is still open (r%dw%de%d).", pp->name, pp->acr, pp->acw, pp->ace); return (EBUSY); } } else { G_NOP_DEBUG(0, "Device %s removed.", gp->name); } g_wither_geom(gp, ENXIO); return (0); } static int g_nop_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) { return (g_nop_destroy(gp, 0)); } static void g_nop_ctl_create(struct gctl_req *req, struct g_class *mp) { struct g_provider *pp; intmax_t *val, error, rfailprob, wfailprob, count_until_fail, offset, secsize, size, stripesize, stripeoffset, delaymsec, rdelayprob, wdelayprob; const char *physpath, *gnopname; char param[16]; int i, *nargs; g_topology_assert(); error = -1; rfailprob = -1; wfailprob = -1; count_until_fail = -1; offset = 0; secsize = 0; size = 0; stripesize = 0; stripeoffset = 0; delaymsec = -1; rdelayprob = -1; wdelayprob = -1; nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); if (nargs == NULL) { gctl_error(req, "No '%s' argument", "nargs"); return; } if (*nargs <= 0) { gctl_error(req, "Missing device(s)."); return; } val = gctl_get_paraml_opt(req, "error", sizeof(*val)); if (val != NULL) { error = *val; } val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); if (val != NULL) { rfailprob = *val; if (rfailprob < -1 || rfailprob > 100) { gctl_error(req, "Invalid '%s' argument", "rfailprob"); return; } } val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); if (val != NULL) { wfailprob = *val; if (wfailprob < -1 || wfailprob > 100) { gctl_error(req, "Invalid '%s' argument", "wfailprob"); return; } } val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); if (val != NULL) { delaymsec = *val; if (delaymsec < 1 && delaymsec != -1) { gctl_error(req, "Invalid '%s' argument", "delaymsec"); return; } } val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); if (val != NULL) { rdelayprob = *val; if (rdelayprob < -1 || rdelayprob > 100) { gctl_error(req, "Invalid '%s' argument", "rdelayprob"); return; } } val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); if (val != NULL) { wdelayprob = *val; if (wdelayprob < -1 || wdelayprob > 100) { gctl_error(req, "Invalid '%s' argument", "wdelayprob"); return; } } val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); if (val != NULL) { count_until_fail = *val; if (count_until_fail < -1) { gctl_error(req, "Invalid '%s' argument", "count_until_fail"); return; } } val = gctl_get_paraml_opt(req, "offset", sizeof(*val)); if (val != NULL) { offset = *val; if (offset < 0) { gctl_error(req, "Invalid '%s' argument", "offset"); return; } } val = gctl_get_paraml_opt(req, "size", sizeof(*val)); if (val != NULL) { size = *val; if (size < 0) { gctl_error(req, "Invalid '%s' argument", "size"); return; } } val = gctl_get_paraml_opt(req, "secsize", sizeof(*val)); if (val != NULL) { secsize = *val; if (secsize < 0) { gctl_error(req, "Invalid '%s' argument", "secsize"); return; } } val = gctl_get_paraml_opt(req, "stripesize", sizeof(*val)); if (val != NULL) { stripesize = *val; if (stripesize < 0) { gctl_error(req, "Invalid '%s' argument", "stripesize"); return; } } val = gctl_get_paraml_opt(req, "stripeoffset", sizeof(*val)); if (val != NULL) { stripeoffset = *val; if (stripeoffset < 0) { gctl_error(req, "Invalid '%s' argument", "stripeoffset"); return; } } physpath = gctl_get_asciiparam(req, "physpath"); gnopname = gctl_get_asciiparam(req, "gnopname"); for (i = 0; i < *nargs; i++) { snprintf(param, sizeof(param), "arg%d", i); pp = gctl_get_provider(req, param); if (pp == NULL) return; if (g_nop_create(req, mp, pp, gnopname, error == -1 ? EIO : (int)error, count_until_fail == -1 ? 0 : (u_int)count_until_fail, rfailprob == -1 ? 0 : (u_int)rfailprob, wfailprob == -1 ? 0 : (u_int)wfailprob, delaymsec == -1 ? 1 : (u_int)delaymsec, rdelayprob == -1 ? 0 : (u_int)rdelayprob, wdelayprob == -1 ? 0 : (u_int)wdelayprob, (off_t)offset, (off_t)size, (u_int)secsize, (off_t)stripesize, (off_t)stripeoffset, physpath) != 0) { return; } } } static void g_nop_ctl_configure(struct gctl_req *req, struct g_class *mp) { struct g_nop_softc *sc; struct g_provider *pp; intmax_t *val, delaymsec, error, rdelayprob, rfailprob, wdelayprob, wfailprob, count_until_fail; char param[16]; int i, *nargs; g_topology_assert(); count_until_fail = -1; delaymsec = -1; error = -1; rdelayprob = -1; rfailprob = -1; wdelayprob = -1; wfailprob = -1; nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); if (nargs == NULL) { gctl_error(req, "No '%s' argument", "nargs"); return; } if (*nargs <= 0) { gctl_error(req, "Missing device(s)."); return; } val = gctl_get_paraml_opt(req, "error", sizeof(*val)); if (val != NULL) { error = *val; } val = gctl_get_paraml_opt(req, "count_until_fail", sizeof(*val)); if (val != NULL) { count_until_fail = *val; } val = gctl_get_paraml_opt(req, "rfailprob", sizeof(*val)); if (val != NULL) { rfailprob = *val; if (rfailprob < -1 || rfailprob > 100) { gctl_error(req, "Invalid '%s' argument", "rfailprob"); return; } } val = gctl_get_paraml_opt(req, "wfailprob", sizeof(*val)); if (val != NULL) { wfailprob = *val; if (wfailprob < -1 || wfailprob > 100) { gctl_error(req, "Invalid '%s' argument", "wfailprob"); return; } } val = gctl_get_paraml_opt(req, "delaymsec", sizeof(*val)); if (val != NULL) { delaymsec = *val; if (delaymsec < 1 && delaymsec != -1) { gctl_error(req, "Invalid '%s' argument", "delaymsec"); return; } } val = gctl_get_paraml_opt(req, "rdelayprob", sizeof(*val)); if (val != NULL) { rdelayprob = *val; if (rdelayprob < -1 || rdelayprob > 100) { gctl_error(req, "Invalid '%s' argument", "rdelayprob"); return; } } val = gctl_get_paraml_opt(req, "wdelayprob", sizeof(*val)); if (val != NULL) { wdelayprob = *val; if (wdelayprob < -1 || wdelayprob > 100) { gctl_error(req, "Invalid '%s' argument", "wdelayprob"); return; } } for (i = 0; i < *nargs; i++) { snprintf(param, sizeof(param), "arg%d", i); pp = gctl_get_provider(req, param); if (pp == NULL) return; if (pp->geom->class != mp) { G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); gctl_error(req, "Provider %s is invalid.", pp->name); return; } sc = pp->geom->softc; if (error != -1) sc->sc_error = (int)error; if (rfailprob != -1) sc->sc_rfailprob = (u_int)rfailprob; if (wfailprob != -1) sc->sc_wfailprob = (u_int)wfailprob; if (rdelayprob != -1) sc->sc_rdelayprob = (u_int)rdelayprob; if (wdelayprob != -1) sc->sc_wdelayprob = (u_int)wdelayprob; if (delaymsec != -1) sc->sc_delaymsec = (u_int)delaymsec; if (count_until_fail != -1) sc->sc_count_until_fail = (u_int)count_until_fail; } } static struct g_geom * g_nop_find_geom(struct g_class *mp, const char *name) { struct g_geom *gp; LIST_FOREACH(gp, &mp->geom, geom) { if (strcmp(gp->name, name) == 0) return (gp); } return (NULL); } static void g_nop_ctl_destroy(struct gctl_req *req, struct g_class *mp) { int *nargs, *force, error, i; struct g_geom *gp; const char *name; char param[16]; g_topology_assert(); nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); if (nargs == NULL) { gctl_error(req, "No '%s' argument", "nargs"); return; } if (*nargs <= 0) { gctl_error(req, "Missing device(s)."); return; } force = gctl_get_paraml(req, "force", sizeof(*force)); if (force == NULL) { gctl_error(req, "No 'force' argument"); return; } for (i = 0; i < *nargs; i++) { snprintf(param, sizeof(param), "arg%d", i); name = gctl_get_asciiparam(req, param); if (name == NULL) { gctl_error(req, "No 'arg%d' argument", i); return; } if (strncmp(name, _PATH_DEV, strlen(_PATH_DEV)) == 0) name += strlen(_PATH_DEV); gp = g_nop_find_geom(mp, name); if (gp == NULL) { G_NOP_DEBUG(1, "Device %s is invalid.", name); gctl_error(req, "Device %s is invalid.", name); return; } error = g_nop_destroy(gp, *force); if (error != 0) { gctl_error(req, "Cannot destroy device %s (error=%d).", gp->name, error); return; } } } static void g_nop_ctl_reset(struct gctl_req *req, struct g_class *mp) { struct g_nop_softc *sc; struct g_provider *pp; char param[16]; int i, *nargs; g_topology_assert(); nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); if (nargs == NULL) { gctl_error(req, "No '%s' argument", "nargs"); return; } if (*nargs <= 0) { gctl_error(req, "Missing device(s)."); return; } for (i = 0; i < *nargs; i++) { snprintf(param, sizeof(param), "arg%d", i); pp = gctl_get_provider(req, param); if (pp == NULL) return; if (pp->geom->class != mp) { G_NOP_DEBUG(1, "Provider %s is invalid.", pp->name); gctl_error(req, "Provider %s is invalid.", pp->name); return; } sc = pp->geom->softc; sc->sc_reads = 0; sc->sc_writes = 0; sc->sc_deletes = 0; sc->sc_getattrs = 0; sc->sc_flushes = 0; sc->sc_speedups = 0; sc->sc_cmd0s = 0; sc->sc_cmd1s = 0; sc->sc_cmd2s = 0; sc->sc_readbytes = 0; sc->sc_wrotebytes = 0; } } static void g_nop_config(struct gctl_req *req, struct g_class *mp, const char *verb) { uint32_t *version; g_topology_assert(); version = gctl_get_paraml(req, "version", sizeof(*version)); if (version == NULL) { gctl_error(req, "No '%s' argument.", "version"); return; } if (*version != G_NOP_VERSION) { gctl_error(req, "Userland and kernel parts are out of sync."); return; } if (strcmp(verb, "create") == 0) { g_nop_ctl_create(req, mp); return; } else if (strcmp(verb, "configure") == 0) { g_nop_ctl_configure(req, mp); return; } else if (strcmp(verb, "destroy") == 0) { g_nop_ctl_destroy(req, mp); return; } else if (strcmp(verb, "reset") == 0) { g_nop_ctl_reset(req, mp); return; } gctl_error(req, "Unknown verb."); } static void g_nop_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp) { struct g_nop_softc *sc; if (pp != NULL || cp != NULL) return; sc = gp->softc; sbuf_printf(sb, "%s<Offset>%jd</Offset>\n", indent, (intmax_t)sc->sc_offset); sbuf_printf(sb, "%s<ReadFailProb>%u</ReadFailProb>\n", indent, sc->sc_rfailprob); sbuf_printf(sb, "%s<WriteFailProb>%u</WriteFailProb>\n", indent, sc->sc_wfailprob); sbuf_printf(sb, "%s<ReadDelayedProb>%u</ReadDelayedProb>\n", indent, sc->sc_rdelayprob); sbuf_printf(sb, "%s<WriteDelayedProb>%u</WriteDelayedProb>\n", indent, sc->sc_wdelayprob); sbuf_printf(sb, "%s<Delay>%d</Delay>\n", indent, sc->sc_delaymsec); sbuf_printf(sb, "%s<CountUntilFail>%u</CountUntilFail>\n", indent, sc->sc_count_until_fail); sbuf_printf(sb, "%s<Error>%d</Error>\n", indent, sc->sc_error); sbuf_printf(sb, "%s<Reads>%ju</Reads>\n", indent, sc->sc_reads); sbuf_printf(sb, "%s<Writes>%ju</Writes>\n", indent, sc->sc_writes); sbuf_printf(sb, "%s<Deletes>%ju</Deletes>\n", indent, sc->sc_deletes); sbuf_printf(sb, "%s<Getattrs>%ju</Getattrs>\n", indent, sc->sc_getattrs); sbuf_printf(sb, "%s<Flushes>%ju</Flushes>\n", indent, sc->sc_flushes); sbuf_printf(sb, "%s<Speedups>%ju</Speedups>\n", indent, sc->sc_speedups); sbuf_printf(sb, "%s<Cmd0s>%ju</Cmd0s>\n", indent, sc->sc_cmd0s); sbuf_printf(sb, "%s<Cmd1s>%ju</Cmd1s>\n", indent, sc->sc_cmd1s); sbuf_printf(sb, "%s<Cmd2s>%ju</Cmd2s>\n", indent, sc->sc_cmd2s); sbuf_printf(sb, "%s<ReadBytes>%ju</ReadBytes>\n", indent, sc->sc_readbytes); sbuf_printf(sb, "%s<WroteBytes>%ju</WroteBytes>\n", indent, sc->sc_wrotebytes); } DECLARE_GEOM_CLASS(g_nop_class, g_nop); MODULE_VERSION(geom_nop, 0);
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