misc.c revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD: misc.c,v 1.1.2.2 2006/04/11 11:53:40 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /*- 4 1.1.2.2 yamt * Copyright (c) 1998 Michael Smith <msmith (at) freebsd.org> 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 yamt * modification, are permitted provided that the following conditions 9 1.1.2.2 yamt * are met: 10 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 15 1.1.2.2 yamt * 16 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.1.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.1.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.1.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.1.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.1.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.1.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 yamt * SUCH DAMAGE. 27 1.1.2.2 yamt */ 28 1.1.2.2 yamt 29 1.1.2.2 yamt #include <sys/cdefs.h> 30 1.1.2.2 yamt 31 1.1.2.2 yamt #include <lib/libsa/stand.h> 32 1.1.2.2 yamt #include <bootstrap.h> 33 1.1.2.2 yamt 34 1.1.2.2 yamt /* 35 1.1.2.2 yamt * Concatenate the (argc) elements of (argv) into a single string, and return 36 1.1.2.2 yamt * a copy of same. 37 1.1.2.2 yamt */ 38 1.1.2.2 yamt char * 39 1.1.2.2 yamt unargv(int argc, char *argv[]) 40 1.1.2.2 yamt { 41 1.1.2.2 yamt size_t hlong; 42 1.1.2.2 yamt int i; 43 1.1.2.2 yamt char *cp; 44 1.1.2.2 yamt 45 1.1.2.2 yamt for (hlong = 0, i = 0, hlong = 0; i < argc; i++) 46 1.1.2.2 yamt hlong += strlen(argv[i]) + 2; 47 1.1.2.2 yamt 48 1.1.2.2 yamt if(hlong == 0) 49 1.1.2.2 yamt return(NULL); 50 1.1.2.2 yamt 51 1.1.2.2 yamt cp = alloc(hlong); 52 1.1.2.2 yamt cp[0] = 0; 53 1.1.2.2 yamt for (i = 0; i < argc; i++) { 54 1.1.2.2 yamt strcat(cp, argv[i]); 55 1.1.2.2 yamt if (i < (argc - 1)) 56 1.1.2.2 yamt strcat(cp, " "); 57 1.1.2.2 yamt } 58 1.1.2.2 yamt 59 1.1.2.2 yamt return(cp); 60 1.1.2.2 yamt } 61 1.1.2.2 yamt 62 1.1.2.2 yamt /* 63 1.1.2.2 yamt * Get the length of a string in kernel space 64 1.1.2.2 yamt */ 65 1.1.2.2 yamt size_t 66 1.1.2.2 yamt strlenout(vaddr_t src) 67 1.1.2.2 yamt { 68 1.1.2.2 yamt char c; 69 1.1.2.2 yamt size_t len; 70 1.1.2.2 yamt 71 1.1.2.2 yamt for (len = 0; ; len++) { 72 1.1.2.2 yamt archsw.arch_copyout(src++, &c, 1); 73 1.1.2.2 yamt if (c == 0) 74 1.1.2.2 yamt break; 75 1.1.2.2 yamt } 76 1.1.2.2 yamt return(len); 77 1.1.2.2 yamt } 78 1.1.2.2 yamt 79 1.1.2.2 yamt /* 80 1.1.2.2 yamt * Make a duplicate copy of a string in kernel space 81 1.1.2.2 yamt */ 82 1.1.2.2 yamt char * 83 1.1.2.2 yamt strdupout(vaddr_t str) 84 1.1.2.2 yamt { 85 1.1.2.2 yamt char *result, *cp; 86 1.1.2.2 yamt 87 1.1.2.2 yamt result = alloc(strlenout(str) + 1); 88 1.1.2.2 yamt for (cp = result; ;cp++) { 89 1.1.2.2 yamt archsw.arch_copyout(str++, cp, 1); 90 1.1.2.2 yamt if (*cp == 0) 91 1.1.2.2 yamt break; 92 1.1.2.2 yamt } 93 1.1.2.2 yamt return(result); 94 1.1.2.2 yamt } 95 1.1.2.2 yamt 96 1.1.2.2 yamt /* Zero a region in kernel space. */ 97 1.1.2.2 yamt void 98 1.1.2.2 yamt kern_bzero(vaddr_t dest, size_t len) 99 1.1.2.2 yamt { 100 1.1.2.2 yamt char buf[256]; 101 1.1.2.2 yamt size_t chunk, resid; 102 1.1.2.2 yamt 103 1.1.2.2 yamt bzero(buf, sizeof(buf)); 104 1.1.2.2 yamt resid = len; 105 1.1.2.2 yamt while (resid > 0) { 106 1.1.2.2 yamt chunk = min(sizeof(buf), resid); 107 1.1.2.2 yamt archsw.arch_copyin(buf, dest, chunk); 108 1.1.2.2 yamt resid -= chunk; 109 1.1.2.2 yamt dest += chunk; 110 1.1.2.2 yamt } 111 1.1.2.2 yamt } 112 1.1.2.2 yamt 113 1.1.2.2 yamt /* 114 1.1.2.2 yamt * Read the specified part of a file to kernel space. Unlike regular 115 1.1.2.2 yamt * pread, the file pointer is advanced to the end of the read data, 116 1.1.2.2 yamt * and it just returns 0 if successful. 117 1.1.2.2 yamt */ 118 1.1.2.2 yamt int 119 1.1.2.2 yamt kern_pread(int fd, vaddr_t dest, size_t len, off_t off) 120 1.1.2.2 yamt { 121 1.1.2.2 yamt ssize_t nread; 122 1.1.2.2 yamt 123 1.1.2.2 yamt if (lseek(fd, off, SEEK_SET) == -1) { 124 1.1.2.2 yamt printf("\nlseek failed\n"); 125 1.1.2.2 yamt return (-1); 126 1.1.2.2 yamt } 127 1.1.2.2 yamt nread = archsw.arch_readin(fd, dest, len); 128 1.1.2.2 yamt if (nread != len) { 129 1.1.2.2 yamt printf("\nreadin failed\n"); 130 1.1.2.2 yamt return (-1); 131 1.1.2.2 yamt } 132 1.1.2.2 yamt return (0); 133 1.1.2.2 yamt } 134 1.1.2.2 yamt 135 1.1.2.2 yamt /* 136 1.1.2.2 yamt * Read the specified part of a file to a malloced buffer. The file 137 1.1.2.2 yamt * pointer is advanced to the end of the read data. 138 1.1.2.2 yamt */ 139 1.1.2.2 yamt void * 140 1.1.2.2 yamt alloc_pread(int fd, off_t off, size_t len) 141 1.1.2.2 yamt { 142 1.1.2.2 yamt void *buf; 143 1.1.2.2 yamt ssize_t nread; 144 1.1.2.2 yamt 145 1.1.2.2 yamt buf = alloc(len); 146 1.1.2.2 yamt if (buf == NULL) { 147 1.1.2.2 yamt printf("\nalloc(%d) failed\n", (int)len); 148 1.1.2.2 yamt return (NULL); 149 1.1.2.2 yamt } 150 1.1.2.2 yamt if (lseek(fd, off, SEEK_SET) == -1) { 151 1.1.2.2 yamt printf("\nlseek failed\n"); 152 1.1.2.2 yamt free(buf); 153 1.1.2.2 yamt return (NULL); 154 1.1.2.2 yamt } 155 1.1.2.2 yamt nread = read(fd, buf, len); 156 1.1.2.2 yamt if (nread != len) { 157 1.1.2.2 yamt printf("\nread failed\n"); 158 1.1.2.2 yamt free(buf); 159 1.1.2.2 yamt return (NULL); 160 1.1.2.2 yamt } 161 1.1.2.2 yamt return (buf); 162 1.1.2.2 yamt } 163 1.1.2.2 yamt 164 1.1.2.2 yamt /* 165 1.1.2.2 yamt * Display a region in traditional hexdump format. 166 1.1.2.2 yamt */ 167 1.1.2.2 yamt void 168 1.1.2.2 yamt hexdump(caddr_t region, size_t len) 169 1.1.2.2 yamt { 170 1.1.2.2 yamt caddr_t line; 171 1.1.2.2 yamt int x, c; 172 1.1.2.2 yamt char lbuf[80]; 173 1.1.2.2 yamt #define emit(fmt, args...) {sprintf(lbuf, fmt , ## args); pager_output(lbuf);} 174 1.1.2.2 yamt 175 1.1.2.2 yamt pager_open(); 176 1.1.2.2 yamt for (line = region; line < (region + len); line += 16) { 177 1.1.2.2 yamt emit("%08lx ", (long) line); 178 1.1.2.2 yamt 179 1.1.2.2 yamt for (x = 0; x < 16; x++) { 180 1.1.2.2 yamt if ((line + x) < (region + len)) { 181 1.1.2.2 yamt emit("%02x ", *(u_int8_t *)(line + x)); 182 1.1.2.2 yamt } else { 183 1.1.2.2 yamt emit("-- "); 184 1.1.2.2 yamt } 185 1.1.2.2 yamt if (x == 7) 186 1.1.2.2 yamt emit(" "); 187 1.1.2.2 yamt } 188 1.1.2.2 yamt emit(" |"); 189 1.1.2.2 yamt for (x = 0; x < 16; x++) { 190 1.1.2.2 yamt if ((line + x) < (region + len)) { 191 1.1.2.2 yamt c = *(u_int8_t *)(line + x); 192 1.1.2.2 yamt if ((c < ' ') || (c > '~')) /* !isprint(c) */ 193 1.1.2.2 yamt c = '.'; 194 1.1.2.2 yamt emit("%c", c); 195 1.1.2.2 yamt } else { 196 1.1.2.2 yamt emit(" "); 197 1.1.2.2 yamt } 198 1.1.2.2 yamt } 199 1.1.2.2 yamt emit("|\n"); 200 1.1.2.2 yamt } 201 1.1.2.2 yamt pager_close(); 202 1.1.2.2 yamt } 203 1.1.2.2 yamt 204 1.1.2.2 yamt void 205 1.1.2.2 yamt dev_cleanup(void) 206 1.1.2.2 yamt { 207 1.1.2.2 yamt 208 1.1.2.2 yamt } 209
Indexes created Thu Oct 02 14:10:14 GMT 2025