misc.c revision 1.2.16.2
1 1.2.16.2 rpaulo /* $NetBSD: misc.c,v 1.2.16.2 2006/09/09 02:40:39 rpaulo Exp $ */ 2 1.2.16.2 rpaulo 3 1.2.16.2 rpaulo /*- 4 1.2.16.2 rpaulo * Copyright (c) 1998 Michael Smith <msmith (at) freebsd.org> 5 1.2.16.2 rpaulo * All rights reserved. 6 1.2.16.2 rpaulo * 7 1.2.16.2 rpaulo * Redistribution and use in source and binary forms, with or without 8 1.2.16.2 rpaulo * modification, are permitted provided that the following conditions 9 1.2.16.2 rpaulo * are met: 10 1.2.16.2 rpaulo * 1. Redistributions of source code must retain the above copyright 11 1.2.16.2 rpaulo * notice, this list of conditions and the following disclaimer. 12 1.2.16.2 rpaulo * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.16.2 rpaulo * notice, this list of conditions and the following disclaimer in the 14 1.2.16.2 rpaulo * documentation and/or other materials provided with the distribution. 15 1.2.16.2 rpaulo * 16 1.2.16.2 rpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.2.16.2 rpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.2.16.2 rpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.2.16.2 rpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.2.16.2 rpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.2.16.2 rpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.2.16.2 rpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.2.16.2 rpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.2.16.2 rpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.16.2 rpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.16.2 rpaulo * SUCH DAMAGE. 27 1.2.16.2 rpaulo */ 28 1.2.16.2 rpaulo 29 1.2.16.2 rpaulo #include <sys/cdefs.h> 30 1.2.16.2 rpaulo /* __FBSDID("$FreeBSD: src/sys/boot/common/misc.c,v 1.8.4.1 2004/09/03 19:25:40 iedowse Exp $"); */ 31 1.2.16.2 rpaulo 32 1.2.16.2 rpaulo #include <lib/libsa/stand.h> 33 1.2.16.2 rpaulo #include <bootstrap.h> 34 1.2.16.2 rpaulo 35 1.2.16.2 rpaulo /* 36 1.2.16.2 rpaulo * Concatenate the (argc) elements of (argv) into a single string, and return 37 1.2.16.2 rpaulo * a copy of same. 38 1.2.16.2 rpaulo */ 39 1.2.16.2 rpaulo char * 40 1.2.16.2 rpaulo unargv(int argc, char *argv[]) 41 1.2.16.2 rpaulo { 42 1.2.16.2 rpaulo size_t hlong; 43 1.2.16.2 rpaulo int i; 44 1.2.16.2 rpaulo char *cp; 45 1.2.16.2 rpaulo 46 1.2.16.2 rpaulo for (hlong = 0, i = 0, hlong = 0; i < argc; i++) 47 1.2.16.2 rpaulo hlong += strlen(argv[i]) + 2; 48 1.2.16.2 rpaulo 49 1.2.16.2 rpaulo if(hlong == 0) 50 1.2.16.2 rpaulo return(NULL); 51 1.2.16.2 rpaulo 52 1.2.16.2 rpaulo cp = alloc(hlong); 53 1.2.16.2 rpaulo cp[0] = 0; 54 1.2.16.2 rpaulo for (i = 0; i < argc; i++) { 55 1.2.16.2 rpaulo strcat(cp, argv[i]); 56 1.2.16.2 rpaulo if (i < (argc - 1)) 57 1.2.16.2 rpaulo strcat(cp, " "); 58 1.2.16.2 rpaulo } 59 1.2.16.2 rpaulo 60 1.2.16.2 rpaulo return(cp); 61 1.2.16.2 rpaulo } 62 1.2.16.2 rpaulo 63 1.2.16.2 rpaulo /* 64 1.2.16.2 rpaulo * Get the length of a string in kernel space 65 1.2.16.2 rpaulo */ 66 1.2.16.2 rpaulo size_t 67 1.2.16.2 rpaulo strlenout(vaddr_t src) 68 1.2.16.2 rpaulo { 69 1.2.16.2 rpaulo char c; 70 1.2.16.2 rpaulo size_t len; 71 1.2.16.2 rpaulo 72 1.2.16.2 rpaulo for (len = 0; ; len++) { 73 1.2.16.2 rpaulo archsw.arch_copyout(src++, &c, 1); 74 1.2.16.2 rpaulo if (c == 0) 75 1.2.16.2 rpaulo break; 76 1.2.16.2 rpaulo } 77 1.2.16.2 rpaulo return(len); 78 1.2.16.2 rpaulo } 79 1.2.16.2 rpaulo 80 1.2.16.2 rpaulo /* 81 1.2.16.2 rpaulo * Make a duplicate copy of a string in kernel space 82 1.2.16.2 rpaulo */ 83 1.2.16.2 rpaulo char * 84 1.2.16.2 rpaulo strdupout(vaddr_t str) 85 1.2.16.2 rpaulo { 86 1.2.16.2 rpaulo char *result, *cp; 87 1.2.16.2 rpaulo 88 1.2.16.2 rpaulo result = alloc(strlenout(str) + 1); 89 1.2.16.2 rpaulo for (cp = result; ;cp++) { 90 1.2.16.2 rpaulo archsw.arch_copyout(str++, cp, 1); 91 1.2.16.2 rpaulo if (*cp == 0) 92 1.2.16.2 rpaulo break; 93 1.2.16.2 rpaulo } 94 1.2.16.2 rpaulo return(result); 95 1.2.16.2 rpaulo } 96 1.2.16.2 rpaulo 97 1.2.16.2 rpaulo /* Zero a region in kernel space. */ 98 1.2.16.2 rpaulo void 99 1.2.16.2 rpaulo kern_bzero(vaddr_t dest, size_t len) 100 1.2.16.2 rpaulo { 101 1.2.16.2 rpaulo char buf[256]; 102 1.2.16.2 rpaulo size_t chunk, resid; 103 1.2.16.2 rpaulo 104 1.2.16.2 rpaulo bzero(buf, sizeof(buf)); 105 1.2.16.2 rpaulo resid = len; 106 1.2.16.2 rpaulo while (resid > 0) { 107 1.2.16.2 rpaulo chunk = min(sizeof(buf), resid); 108 1.2.16.2 rpaulo archsw.arch_copyin(buf, dest, chunk); 109 1.2.16.2 rpaulo resid -= chunk; 110 1.2.16.2 rpaulo dest += chunk; 111 1.2.16.2 rpaulo } 112 1.2.16.2 rpaulo } 113 1.2.16.2 rpaulo 114 1.2.16.2 rpaulo /* 115 1.2.16.2 rpaulo * Read the specified part of a file to kernel space. Unlike regular 116 1.2.16.2 rpaulo * pread, the file pointer is advanced to the end of the read data, 117 1.2.16.2 rpaulo * and it just returns 0 if successful. 118 1.2.16.2 rpaulo */ 119 1.2.16.2 rpaulo int 120 1.2.16.2 rpaulo kern_pread(int fd, vaddr_t dest, size_t len, off_t off) 121 1.2.16.2 rpaulo { 122 1.2.16.2 rpaulo ssize_t nread; 123 1.2.16.2 rpaulo 124 1.2.16.2 rpaulo if (lseek(fd, off, SEEK_SET) == -1) { 125 1.2.16.2 rpaulo printf("\nlseek failed\n"); 126 1.2.16.2 rpaulo return (-1); 127 1.2.16.2 rpaulo } 128 1.2.16.2 rpaulo nread = archsw.arch_readin(fd, dest, len); 129 1.2.16.2 rpaulo if (nread != len) { 130 1.2.16.2 rpaulo printf("\nreadin failed\n"); 131 1.2.16.2 rpaulo return (-1); 132 1.2.16.2 rpaulo } 133 1.2.16.2 rpaulo return (0); 134 1.2.16.2 rpaulo } 135 1.2.16.2 rpaulo 136 1.2.16.2 rpaulo /* 137 1.2.16.2 rpaulo * Read the specified part of a file to a malloced buffer. The file 138 1.2.16.2 rpaulo * pointer is advanced to the end of the read data. 139 1.2.16.2 rpaulo */ 140 1.2.16.2 rpaulo void * 141 1.2.16.2 rpaulo alloc_pread(int fd, off_t off, size_t len) 142 1.2.16.2 rpaulo { 143 1.2.16.2 rpaulo void *buf; 144 1.2.16.2 rpaulo ssize_t nread; 145 1.2.16.2 rpaulo 146 1.2.16.2 rpaulo buf = alloc(len); 147 1.2.16.2 rpaulo if (buf == NULL) { 148 1.2.16.2 rpaulo printf("\nalloc(%d) failed\n", (int)len); 149 1.2.16.2 rpaulo return (NULL); 150 1.2.16.2 rpaulo } 151 1.2.16.2 rpaulo if (lseek(fd, off, SEEK_SET) == -1) { 152 1.2.16.2 rpaulo printf("\nlseek failed\n"); 153 1.2.16.2 rpaulo free(buf); 154 1.2.16.2 rpaulo return (NULL); 155 1.2.16.2 rpaulo } 156 1.2.16.2 rpaulo nread = read(fd, buf, len); 157 1.2.16.2 rpaulo if (nread != len) { 158 1.2.16.2 rpaulo printf("\nread failed\n"); 159 1.2.16.2 rpaulo free(buf); 160 1.2.16.2 rpaulo return (NULL); 161 1.2.16.2 rpaulo } 162 1.2.16.2 rpaulo return (buf); 163 1.2.16.2 rpaulo } 164 1.2.16.2 rpaulo 165 1.2.16.2 rpaulo /* 166 1.2.16.2 rpaulo * Display a region in traditional hexdump format. 167 1.2.16.2 rpaulo */ 168 1.2.16.2 rpaulo void 169 1.2.16.2 rpaulo hexdump(caddr_t region, size_t len) 170 1.2.16.2 rpaulo { 171 1.2.16.2 rpaulo caddr_t line; 172 1.2.16.2 rpaulo int x, c; 173 1.2.16.2 rpaulo char lbuf[80]; 174 1.2.16.2 rpaulo #define emit(fmt, args...) {sprintf(lbuf, fmt , ## args); pager_output(lbuf);} 175 1.2.16.2 rpaulo 176 1.2.16.2 rpaulo pager_open(); 177 1.2.16.2 rpaulo for (line = region; line < (region + len); line += 16) { 178 1.2.16.2 rpaulo emit("%08lx ", (long) line); 179 1.2.16.2 rpaulo 180 1.2.16.2 rpaulo for (x = 0; x < 16; x++) { 181 1.2.16.2 rpaulo if ((line + x) < (region + len)) { 182 1.2.16.2 rpaulo emit("%02x ", *(u_int8_t *)(line + x)); 183 1.2.16.2 rpaulo } else { 184 1.2.16.2 rpaulo emit("-- "); 185 1.2.16.2 rpaulo } 186 1.2.16.2 rpaulo if (x == 7) 187 1.2.16.2 rpaulo emit(" "); 188 1.2.16.2 rpaulo } 189 1.2.16.2 rpaulo emit(" |"); 190 1.2.16.2 rpaulo for (x = 0; x < 16; x++) { 191 1.2.16.2 rpaulo if ((line + x) < (region + len)) { 192 1.2.16.2 rpaulo c = *(u_int8_t *)(line + x); 193 1.2.16.2 rpaulo if ((c < ' ') || (c > '~')) /* !isprint(c) */ 194 1.2.16.2 rpaulo c = '.'; 195 1.2.16.2 rpaulo emit("%c", c); 196 1.2.16.2 rpaulo } else { 197 1.2.16.2 rpaulo emit(" "); 198 1.2.16.2 rpaulo } 199 1.2.16.2 rpaulo } 200 1.2.16.2 rpaulo emit("|\n"); 201 1.2.16.2 rpaulo } 202 1.2.16.2 rpaulo pager_close(); 203 1.2.16.2 rpaulo } 204 1.2.16.2 rpaulo 205 1.2.16.2 rpaulo void 206 1.2.16.2 rpaulo dev_cleanup(void) 207 1.2.16.2 rpaulo { 208 1.2.16.2 rpaulo 209 1.2.16.2 rpaulo } 210
Indexes created Thu Oct 02 14:10:14 GMT 2025