misc.c revision 1.2.2.2
1 1.2.2.2 simonb /* $NetBSD: misc.c,v 1.2.2.2 2006/04/22 11:37:38 simonb Exp $ */ 2 1.2.2.2 simonb 3 1.2.2.2 simonb /*- 4 1.2.2.2 simonb * Copyright (c) 1998 Michael Smith <msmith (at) freebsd.org> 5 1.2.2.2 simonb * All rights reserved. 6 1.2.2.2 simonb * 7 1.2.2.2 simonb * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 simonb * modification, are permitted provided that the following conditions 9 1.2.2.2 simonb * are met: 10 1.2.2.2 simonb * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 simonb * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 simonb * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 simonb * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 simonb * documentation and/or other materials provided with the distribution. 15 1.2.2.2 simonb * 16 1.2.2.2 simonb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.2.2.2 simonb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.2.2.2 simonb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.2.2.2 simonb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.2.2.2 simonb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.2.2.2 simonb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.2.2.2 simonb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.2.2.2 simonb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.2.2.2 simonb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.2.2 simonb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.2.2 simonb * SUCH DAMAGE. 27 1.2.2.2 simonb */ 28 1.2.2.2 simonb 29 1.2.2.2 simonb #include <sys/cdefs.h> 30 1.2.2.2 simonb 31 1.2.2.2 simonb #include <lib/libsa/stand.h> 32 1.2.2.2 simonb #include <bootstrap.h> 33 1.2.2.2 simonb 34 1.2.2.2 simonb /* 35 1.2.2.2 simonb * Concatenate the (argc) elements of (argv) into a single string, and return 36 1.2.2.2 simonb * a copy of same. 37 1.2.2.2 simonb */ 38 1.2.2.2 simonb char * 39 1.2.2.2 simonb unargv(int argc, char *argv[]) 40 1.2.2.2 simonb { 41 1.2.2.2 simonb size_t hlong; 42 1.2.2.2 simonb int i; 43 1.2.2.2 simonb char *cp; 44 1.2.2.2 simonb 45 1.2.2.2 simonb for (hlong = 0, i = 0, hlong = 0; i < argc; i++) 46 1.2.2.2 simonb hlong += strlen(argv[i]) + 2; 47 1.2.2.2 simonb 48 1.2.2.2 simonb if(hlong == 0) 49 1.2.2.2 simonb return(NULL); 50 1.2.2.2 simonb 51 1.2.2.2 simonb cp = alloc(hlong); 52 1.2.2.2 simonb cp[0] = 0; 53 1.2.2.2 simonb for (i = 0; i < argc; i++) { 54 1.2.2.2 simonb strcat(cp, argv[i]); 55 1.2.2.2 simonb if (i < (argc - 1)) 56 1.2.2.2 simonb strcat(cp, " "); 57 1.2.2.2 simonb } 58 1.2.2.2 simonb 59 1.2.2.2 simonb return(cp); 60 1.2.2.2 simonb } 61 1.2.2.2 simonb 62 1.2.2.2 simonb /* 63 1.2.2.2 simonb * Get the length of a string in kernel space 64 1.2.2.2 simonb */ 65 1.2.2.2 simonb size_t 66 1.2.2.2 simonb strlenout(vaddr_t src) 67 1.2.2.2 simonb { 68 1.2.2.2 simonb char c; 69 1.2.2.2 simonb size_t len; 70 1.2.2.2 simonb 71 1.2.2.2 simonb for (len = 0; ; len++) { 72 1.2.2.2 simonb archsw.arch_copyout(src++, &c, 1); 73 1.2.2.2 simonb if (c == 0) 74 1.2.2.2 simonb break; 75 1.2.2.2 simonb } 76 1.2.2.2 simonb return(len); 77 1.2.2.2 simonb } 78 1.2.2.2 simonb 79 1.2.2.2 simonb /* 80 1.2.2.2 simonb * Make a duplicate copy of a string in kernel space 81 1.2.2.2 simonb */ 82 1.2.2.2 simonb char * 83 1.2.2.2 simonb strdupout(vaddr_t str) 84 1.2.2.2 simonb { 85 1.2.2.2 simonb char *result, *cp; 86 1.2.2.2 simonb 87 1.2.2.2 simonb result = alloc(strlenout(str) + 1); 88 1.2.2.2 simonb for (cp = result; ;cp++) { 89 1.2.2.2 simonb archsw.arch_copyout(str++, cp, 1); 90 1.2.2.2 simonb if (*cp == 0) 91 1.2.2.2 simonb break; 92 1.2.2.2 simonb } 93 1.2.2.2 simonb return(result); 94 1.2.2.2 simonb } 95 1.2.2.2 simonb 96 1.2.2.2 simonb /* Zero a region in kernel space. */ 97 1.2.2.2 simonb void 98 1.2.2.2 simonb kern_bzero(vaddr_t dest, size_t len) 99 1.2.2.2 simonb { 100 1.2.2.2 simonb char buf[256]; 101 1.2.2.2 simonb size_t chunk, resid; 102 1.2.2.2 simonb 103 1.2.2.2 simonb bzero(buf, sizeof(buf)); 104 1.2.2.2 simonb resid = len; 105 1.2.2.2 simonb while (resid > 0) { 106 1.2.2.2 simonb chunk = min(sizeof(buf), resid); 107 1.2.2.2 simonb archsw.arch_copyin(buf, dest, chunk); 108 1.2.2.2 simonb resid -= chunk; 109 1.2.2.2 simonb dest += chunk; 110 1.2.2.2 simonb } 111 1.2.2.2 simonb } 112 1.2.2.2 simonb 113 1.2.2.2 simonb /* 114 1.2.2.2 simonb * Read the specified part of a file to kernel space. Unlike regular 115 1.2.2.2 simonb * pread, the file pointer is advanced to the end of the read data, 116 1.2.2.2 simonb * and it just returns 0 if successful. 117 1.2.2.2 simonb */ 118 1.2.2.2 simonb int 119 1.2.2.2 simonb kern_pread(int fd, vaddr_t dest, size_t len, off_t off) 120 1.2.2.2 simonb { 121 1.2.2.2 simonb ssize_t nread; 122 1.2.2.2 simonb 123 1.2.2.2 simonb if (lseek(fd, off, SEEK_SET) == -1) { 124 1.2.2.2 simonb printf("\nlseek failed\n"); 125 1.2.2.2 simonb return (-1); 126 1.2.2.2 simonb } 127 1.2.2.2 simonb nread = archsw.arch_readin(fd, dest, len); 128 1.2.2.2 simonb if (nread != len) { 129 1.2.2.2 simonb printf("\nreadin failed\n"); 130 1.2.2.2 simonb return (-1); 131 1.2.2.2 simonb } 132 1.2.2.2 simonb return (0); 133 1.2.2.2 simonb } 134 1.2.2.2 simonb 135 1.2.2.2 simonb /* 136 1.2.2.2 simonb * Read the specified part of a file to a malloced buffer. The file 137 1.2.2.2 simonb * pointer is advanced to the end of the read data. 138 1.2.2.2 simonb */ 139 1.2.2.2 simonb void * 140 1.2.2.2 simonb alloc_pread(int fd, off_t off, size_t len) 141 1.2.2.2 simonb { 142 1.2.2.2 simonb void *buf; 143 1.2.2.2 simonb ssize_t nread; 144 1.2.2.2 simonb 145 1.2.2.2 simonb buf = alloc(len); 146 1.2.2.2 simonb if (buf == NULL) { 147 1.2.2.2 simonb printf("\nalloc(%d) failed\n", (int)len); 148 1.2.2.2 simonb return (NULL); 149 1.2.2.2 simonb } 150 1.2.2.2 simonb if (lseek(fd, off, SEEK_SET) == -1) { 151 1.2.2.2 simonb printf("\nlseek failed\n"); 152 1.2.2.2 simonb free(buf); 153 1.2.2.2 simonb return (NULL); 154 1.2.2.2 simonb } 155 1.2.2.2 simonb nread = read(fd, buf, len); 156 1.2.2.2 simonb if (nread != len) { 157 1.2.2.2 simonb printf("\nread failed\n"); 158 1.2.2.2 simonb free(buf); 159 1.2.2.2 simonb return (NULL); 160 1.2.2.2 simonb } 161 1.2.2.2 simonb return (buf); 162 1.2.2.2 simonb } 163 1.2.2.2 simonb 164 1.2.2.2 simonb /* 165 1.2.2.2 simonb * Display a region in traditional hexdump format. 166 1.2.2.2 simonb */ 167 1.2.2.2 simonb void 168 1.2.2.2 simonb hexdump(caddr_t region, size_t len) 169 1.2.2.2 simonb { 170 1.2.2.2 simonb caddr_t line; 171 1.2.2.2 simonb int x, c; 172 1.2.2.2 simonb char lbuf[80]; 173 1.2.2.2 simonb #define emit(fmt, args...) {sprintf(lbuf, fmt , ## args); pager_output(lbuf);} 174 1.2.2.2 simonb 175 1.2.2.2 simonb pager_open(); 176 1.2.2.2 simonb for (line = region; line < (region + len); line += 16) { 177 1.2.2.2 simonb emit("%08lx ", (long) line); 178 1.2.2.2 simonb 179 1.2.2.2 simonb for (x = 0; x < 16; x++) { 180 1.2.2.2 simonb if ((line + x) < (region + len)) { 181 1.2.2.2 simonb emit("%02x ", *(u_int8_t *)(line + x)); 182 1.2.2.2 simonb } else { 183 1.2.2.2 simonb emit("-- "); 184 1.2.2.2 simonb } 185 1.2.2.2 simonb if (x == 7) 186 1.2.2.2 simonb emit(" "); 187 1.2.2.2 simonb } 188 1.2.2.2 simonb emit(" |"); 189 1.2.2.2 simonb for (x = 0; x < 16; x++) { 190 1.2.2.2 simonb if ((line + x) < (region + len)) { 191 1.2.2.2 simonb c = *(u_int8_t *)(line + x); 192 1.2.2.2 simonb if ((c < ' ') || (c > '~')) /* !isprint(c) */ 193 1.2.2.2 simonb c = '.'; 194 1.2.2.2 simonb emit("%c", c); 195 1.2.2.2 simonb } else { 196 1.2.2.2 simonb emit(" "); 197 1.2.2.2 simonb } 198 1.2.2.2 simonb } 199 1.2.2.2 simonb emit("|\n"); 200 1.2.2.2 simonb } 201 1.2.2.2 simonb pager_close(); 202 1.2.2.2 simonb } 203 1.2.2.2 simonb 204 1.2.2.2 simonb void 205 1.2.2.2 simonb dev_cleanup(void) 206 1.2.2.2 simonb { 207 1.2.2.2 simonb 208 1.2.2.2 simonb } 209
Indexes created Thu Oct 02 14:10:14 GMT 2025