1998-08-21 03:17:42 +00:00
|
|
|
/*-
|
|
|
|
* Copyright (c) 1998 Michael Smith <msmith@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 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.
|
|
|
|
*/
|
|
|
|
|
2003-08-25 23:30:41 +00:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
1998-08-21 03:17:42 +00:00
|
|
|
#include <string.h>
|
|
|
|
#include <stand.h>
|
1998-09-03 02:10:09 +00:00
|
|
|
#include <bootstrap.h>
|
1998-08-21 03:17:42 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Concatenate the (argc) elements of (argv) into a single string, and return
|
|
|
|
* a copy of same.
|
|
|
|
*/
|
|
|
|
char *
|
|
|
|
unargv(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
size_t hlong;
|
|
|
|
int i;
|
|
|
|
char *cp;
|
|
|
|
|
2008-08-04 06:39:52 +00:00
|
|
|
for (i = 0, hlong = 0; i < argc; i++)
|
1998-10-05 05:40:58 +00:00
|
|
|
hlong += strlen(argv[i]) + 2;
|
1998-08-21 03:17:42 +00:00
|
|
|
|
|
|
|
if(hlong == 0)
|
|
|
|
return(NULL);
|
|
|
|
|
|
|
|
cp = malloc(hlong);
|
|
|
|
cp[0] = 0;
|
1998-10-05 05:40:58 +00:00
|
|
|
for (i = 0; i < argc; i++) {
|
1998-08-21 03:17:42 +00:00
|
|
|
strcat(cp, argv[i]);
|
1998-10-05 05:40:58 +00:00
|
|
|
if (i < (argc - 1))
|
|
|
|
strcat(cp, " ");
|
|
|
|
}
|
|
|
|
|
1998-08-21 03:17:42 +00:00
|
|
|
return(cp);
|
|
|
|
}
|
|
|
|
|
1998-09-03 02:10:09 +00:00
|
|
|
/*
|
|
|
|
* Get the length of a string in kernel space
|
|
|
|
*/
|
|
|
|
size_t
|
|
|
|
strlenout(vm_offset_t src)
|
|
|
|
{
|
|
|
|
char c;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
for (len = 0; ; len++) {
|
|
|
|
archsw.arch_copyout(src++, &c, 1);
|
|
|
|
if (c == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return(len);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make a duplicate copy of a string in kernel space
|
|
|
|
*/
|
|
|
|
char *
|
|
|
|
strdupout(vm_offset_t str)
|
|
|
|
{
|
|
|
|
char *result, *cp;
|
|
|
|
|
|
|
|
result = malloc(strlenout(str) + 1);
|
|
|
|
for (cp = result; ;cp++) {
|
|
|
|
archsw.arch_copyout(str++, cp, 1);
|
|
|
|
if (*cp == 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return(result);
|
|
|
|
}
|
1998-09-19 01:31:28 +00:00
|
|
|
|
2004-08-28 14:57:34 +00:00
|
|
|
/* Zero a region in kernel space. */
|
|
|
|
void
|
|
|
|
kern_bzero(vm_offset_t dest, size_t len)
|
|
|
|
{
|
|
|
|
char buf[256];
|
|
|
|
size_t chunk, resid;
|
|
|
|
|
|
|
|
bzero(buf, sizeof(buf));
|
|
|
|
resid = len;
|
|
|
|
while (resid > 0) {
|
|
|
|
chunk = min(sizeof(buf), resid);
|
|
|
|
archsw.arch_copyin(buf, dest, chunk);
|
|
|
|
resid -= chunk;
|
|
|
|
dest += chunk;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read the specified part of a file to kernel space. Unlike regular
|
|
|
|
* pread, the file pointer is advanced to the end of the read data,
|
|
|
|
* and it just returns 0 if successful.
|
|
|
|
*/
|
|
|
|
int
|
2020-03-08 17:42:42 +00:00
|
|
|
kern_pread(readin_handle_t fd, vm_offset_t dest, size_t len, off_t off)
|
2004-08-28 14:57:34 +00:00
|
|
|
{
|
|
|
|
|
2020-03-08 17:42:42 +00:00
|
|
|
if (VECTX_LSEEK(fd, off, SEEK_SET) == -1) {
|
2014-11-05 04:18:41 +00:00
|
|
|
#ifdef DEBUG
|
2004-08-28 14:57:34 +00:00
|
|
|
printf("\nlseek failed\n");
|
2014-11-05 04:18:41 +00:00
|
|
|
#endif
|
2004-08-28 14:57:34 +00:00
|
|
|
return (-1);
|
|
|
|
}
|
2016-01-12 02:17:39 +00:00
|
|
|
if ((size_t)archsw.arch_readin(fd, dest, len) != len) {
|
2014-11-05 04:18:41 +00:00
|
|
|
#ifdef DEBUG
|
2004-08-28 14:57:34 +00:00
|
|
|
printf("\nreadin failed\n");
|
2014-11-05 04:18:41 +00:00
|
|
|
#endif
|
2004-08-28 14:57:34 +00:00
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read the specified part of a file to a malloced buffer. The file
|
|
|
|
* pointer is advanced to the end of the read data.
|
|
|
|
*/
|
2018-01-23 18:01:40 +00:00
|
|
|
/* coverity[ -tainted_data_return ] */
|
2004-08-28 14:57:34 +00:00
|
|
|
void *
|
2020-03-08 17:42:42 +00:00
|
|
|
alloc_pread(readin_handle_t fd, off_t off, size_t len)
|
2004-08-28 14:57:34 +00:00
|
|
|
{
|
|
|
|
void *buf;
|
|
|
|
|
|
|
|
buf = malloc(len);
|
|
|
|
if (buf == NULL) {
|
2014-11-05 04:18:41 +00:00
|
|
|
#ifdef DEBUG
|
2004-08-28 14:57:34 +00:00
|
|
|
printf("\nmalloc(%d) failed\n", (int)len);
|
2014-11-05 04:18:41 +00:00
|
|
|
#endif
|
2020-02-23 15:21:15 +00:00
|
|
|
errno = ENOMEM;
|
2004-08-28 14:57:34 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
2020-03-08 17:42:42 +00:00
|
|
|
if (VECTX_LSEEK(fd, off, SEEK_SET) == -1) {
|
2014-11-05 04:18:41 +00:00
|
|
|
#ifdef DEBUG
|
2004-08-28 14:57:34 +00:00
|
|
|
printf("\nlseek failed\n");
|
2014-11-05 04:18:41 +00:00
|
|
|
#endif
|
2004-08-28 14:57:34 +00:00
|
|
|
free(buf);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2020-03-08 17:42:42 +00:00
|
|
|
if ((size_t)VECTX_READ(fd, buf, len) != len) {
|
2014-11-05 04:18:41 +00:00
|
|
|
#ifdef DEBUG
|
2004-08-28 14:57:34 +00:00
|
|
|
printf("\nread failed\n");
|
2014-11-05 04:18:41 +00:00
|
|
|
#endif
|
2004-08-28 14:57:34 +00:00
|
|
|
free(buf);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
return (buf);
|
|
|
|
}
|
|
|
|
|
2021-08-12 05:45:52 +00:00
|
|
|
/*
|
|
|
|
* mount new rootfs and unmount old, set "currdev" environment variable.
|
|
|
|
*/
|
|
|
|
int mount_currdev(struct env_var *ev, int flags, const void *value)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
|
|
|
|
/* mount new rootfs */
|
|
|
|
rv = mount(value, "/", 0, NULL);
|
|
|
|
if (rv == 0) {
|
|
|
|
/*
|
|
|
|
* Note we unmount any previously mounted fs only after
|
|
|
|
* successfully mounting the new because we do not want to
|
|
|
|
* end up with unmounted rootfs.
|
|
|
|
*/
|
|
|
|
if (ev->ev_value != NULL)
|
|
|
|
unmount(ev->ev_value, 0);
|
|
|
|
env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
|
|
|
|
}
|
|
|
|
return (rv);
|
|
|
|
}
|
2023-01-11 22:14:02 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Set currdev to suit the value being supplied in (value)
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
gen_setcurrdev(struct env_var *ev, int flags, const void *value)
|
|
|
|
{
|
|
|
|
struct devdesc *ncurr;
|
|
|
|
int rv;
|
|
|
|
|
|
|
|
if ((rv = devparse(&ncurr, value, NULL)) != 0)
|
|
|
|
return (rv);
|
|
|
|
free(ncurr);
|
|
|
|
|
|
|
|
return (mount_currdev(ev, flags, value));
|
|
|
|
}
|