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/*-
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <string.h>
#include <stand.h>
#include <bootstrap.h>
/*
* 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;
for (i = 0, hlong = 0; i < argc; i++)
hlong += strlen(argv[i]) + 2;
if(hlong == 0)
return(NULL);
cp = malloc(hlong);
cp[0] = 0;
for (i = 0; i < argc; i++) {
strcat(cp, argv[i]);
if (i < (argc - 1))
strcat(cp, " ");
}
return(cp);
}
/*
* 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);
}
/* 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
kern_pread(int fd, vm_offset_t dest, size_t len, off_t off)
{
ssize_t nread;
if (lseek(fd, off, SEEK_SET) == -1) {
#ifdef DEBUG
printf("\nlseek failed\n");
#endif
return (-1);
}
nread = archsw.arch_readin(fd, dest, len);
if (nread != len) {
#ifdef DEBUG
printf("\nreadin failed\n");
#endif
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.
*/
void *
alloc_pread(int fd, off_t off, size_t len)
{
void *buf;
ssize_t nread;
buf = malloc(len);
if (buf == NULL) {
#ifdef DEBUG
printf("\nmalloc(%d) failed\n", (int)len);
#endif
return (NULL);
}
if (lseek(fd, off, SEEK_SET) == -1) {
#ifdef DEBUG
printf("\nlseek failed\n");
#endif
free(buf);
return (NULL);
}
nread = read(fd, buf, len);
if (nread != len) {
#ifdef DEBUG
printf("\nread failed\n");
#endif
free(buf);
return (NULL);
}
return (buf);
}
/*
* Display a region in traditional hexdump format.
*/
void
hexdump(caddr_t region, size_t len)
{
caddr_t line;
int x, c;
char lbuf[80];
#define emit(fmt, args...) {sprintf(lbuf, fmt , ## args); pager_output(lbuf);}
pager_open();
for (line = region; line < (region + len); line += 16) {
emit("%08lx ", (long) line);
for (x = 0; x < 16; x++) {
if ((line + x) < (region + len)) {
emit("%02x ", *(u_int8_t *)(line + x));
} else {
emit("-- ");
}
if (x == 7)
emit(" ");
}
emit(" |");
for (x = 0; x < 16; x++) {
if ((line + x) < (region + len)) {
c = *(u_int8_t *)(line + x);
if ((c < ' ') || (c > '~')) /* !isprint(c) */
c = '.';
emit("%c", c);
} else {
emit(" ");
}
}
emit("|\n");
}
pager_close();
}
void
dev_cleanup(void)
{
int i;
/* Call cleanup routines */
for (i = 0; devsw[i] != NULL; ++i)
if (devsw[i]->dv_cleanup != NULL)
(devsw[i]->dv_cleanup)();
}
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