dfa923a947
While ../zfs/libzfs.h mostly works, there are a few situations where it does not. Eliminate the problem by using plain libzfs.h, like we do for ufs support. This fixes the weird cases, and is easier to understand. It also follows the general style convetion of avoiding ../ in #includes.
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include "bootstrap.h"
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#include "libofw.h"
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#include "libzfs.h"
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static int ofw_parsedev(struct ofw_devdesc **, const char *, const char **);
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/*
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* Point (dev) at an allocated device specifier for the device matching the
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* path in (devspec). If it contains an explicit device specification,
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* use that. If not, use the default device.
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*/
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int
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ofw_getdev(void **vdev, const char *devspec, const char **path)
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{
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struct ofw_devdesc **dev = (struct ofw_devdesc **)vdev;
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int rv;
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/*
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* If it looks like this is just a path and no
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* device, go with the current device.
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*/
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if ((devspec == NULL) ||
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((strchr(devspec, '@') == NULL) &&
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(strchr(devspec, ':') == NULL))) {
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if (((rv = ofw_parsedev(dev, getenv("currdev"), NULL)) == 0) &&
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(path != NULL))
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*path = devspec;
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return(rv);
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}
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/*
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* Try to parse the device name off the beginning of the devspec
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*/
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return(ofw_parsedev(dev, devspec, path));
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}
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/*
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* Point (dev) at an allocated device specifier matching the string version
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* at the beginning of (devspec). Return a pointer to the remaining
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* text in (path).
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*/
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static int
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ofw_parsedev(struct ofw_devdesc **dev, const char *devspec, const char **path)
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{
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struct ofw_devdesc *idev;
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struct devsw *dv;
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phandle_t handle;
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const char *p;
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const char *s;
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char *ep;
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char name[256];
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char type[64];
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int err;
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int len;
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int i;
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for (p = s = devspec; *s != '\0'; p = s) {
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if ((s = strchr(p + 1, '/')) == NULL)
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s = strchr(p, '\0');
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len = s - devspec;
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bcopy(devspec, name, len);
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name[len] = '\0';
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if ((handle = OF_finddevice(name)) == -1) {
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bcopy(name, type, len);
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type[len] = '\0';
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} else if (OF_getprop(handle, "device_type", type, sizeof(type)) == -1)
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continue;
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for (i = 0; (dv = devsw[i]) != NULL; i++) {
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if (strncmp(dv->dv_name, type, strlen(dv->dv_name)) == 0)
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goto found;
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}
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}
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return(ENOENT);
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found:
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if (path != NULL)
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*path = s;
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idev = malloc(sizeof(struct ofw_devdesc));
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if (idev == NULL) {
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printf("ofw_parsedev: malloc failed\n");
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return ENOMEM;
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}
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strcpy(idev->d_path, name);
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idev->dd.d_dev = dv;
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if (dv->dv_type == DEVT_ZFS) {
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p = devspec + strlen(dv->dv_name);
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err = zfs_parsedev((struct zfs_devdesc *)idev, p, path);
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if (err != 0) {
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free(idev);
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return (err);
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}
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}
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if (dev == NULL) {
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free(idev);
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} else {
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*dev = idev;
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}
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return(0);
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}
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int
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ofw_setcurrdev(struct env_var *ev, int flags, const void *value)
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{
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struct ofw_devdesc *ncurr;
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int rv;
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if ((rv = ofw_parsedev(&ncurr, value, NULL)) != 0)
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return rv;
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free(ncurr);
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env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
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return 0;
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}
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