2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
146 lines
3.2 KiB
C
146 lines
3.2 KiB
C
/* $NetBSD: hashhl.c,v 1.4 2010/01/17 23:10:20 wiz Exp $ */
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*/
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/*
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* Modified September 24, 2005 by Elad Efrat <elad@NetBSD.org>
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* Modified April 29, 1997 by Jason R. Thorpe <thorpej@NetBSD.org>
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*/
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#ifdef HASH_ALGORITHM
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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/*
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* Do all the name mangling before we include "namespace.h"
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*/
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#define CONCAT(x,y) __CONCAT(x,y)
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#ifndef HASH_FNPREFIX
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#define HASH_FNPREFIX HASH_ALGORITHM
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#endif /* !HASH_FNPREFIX */
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#define FNPREFIX(x) CONCAT(HASH_FNPREFIX,x)
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#define HASH_CTX CONCAT(HASH_ALGORITHM,_CTX)
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#define HASH_LEN CONCAT(HASH_ALGORITHM,_DIGEST_LENGTH)
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#define HASH_STRLEN CONCAT(HASH_ALGORITHM,_DIGEST_STRING_LENGTH)
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#if !defined(_KERNEL) && defined(__weak_alias) && !defined(HAVE_NBTOOL_CONFIG_H)
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#define WA(a,b) __weak_alias(a,b)
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WA(FNPREFIX(End),CONCAT(_,FNPREFIX(End)))
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WA(FNPREFIX(FileChunk),CONCAT(_,FNPREFIX(FileChunk)))
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WA(FNPREFIX(File),CONCAT(_,FNPREFIX(File)))
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WA(FNPREFIX(Data),CONCAT(_,FNPREFIX(Data)))
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#undef WA
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#endif
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#include "namespace.h"
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#include HASH_INCLUDE
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifndef MIN
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#define MIN(x,y) ((x)<(y)?(x):(y))
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#endif /* !MIN */
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char *
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FNPREFIX(End)(HASH_CTX *ctx, char *buf)
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{
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int i;
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unsigned char digest[HASH_LEN];
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static const char hex[]="0123456789abcdef";
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_DIAGASSERT(ctx != 0);
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if (buf == NULL)
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buf = malloc((size_t)HASH_STRLEN);
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if (buf == NULL)
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return (NULL);
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FNPREFIX(Final)(digest, ctx);
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for (i = 0; i < HASH_LEN; i++) {
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buf[i+i] = hex[(u_int32_t)digest[i] >> 4];
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buf[i+i+1] = hex[digest[i] & 0x0f];
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}
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buf[i+i] = '\0';
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return (buf);
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}
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char *
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FNPREFIX(FileChunk)(const char *filename, char *buf, off_t off, off_t len)
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{
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struct stat sb;
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u_char buffer[BUFSIZ];
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HASH_CTX ctx;
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int fd, save_errno;
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ssize_t nr;
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FNPREFIX(Init)(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (NULL);
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if (len == 0) {
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if (fstat(fd, &sb) == -1) {
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close(fd);
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return (NULL);
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}
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len = sb.st_size;
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}
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if (off > 0 && lseek(fd, off, SEEK_SET) < 0) {
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close(fd);
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return (NULL);
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}
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while ((nr = read(fd, buffer, (size_t) MIN((off_t)sizeof(buffer), len)))
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> 0) {
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FNPREFIX(Update)(&ctx, buffer, (unsigned int)nr);
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if (len > 0 && (len -= nr) == 0)
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break;
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}
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save_errno = errno;
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close(fd);
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errno = save_errno;
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return (nr < 0 ? NULL : FNPREFIX(End)(&ctx, buf));
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}
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char *
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FNPREFIX(File)(const char *filename, char *buf)
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{
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return (FNPREFIX(FileChunk)(filename, buf, (off_t)0, (off_t)0));
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}
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char *
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FNPREFIX(Data)(const unsigned char *data, size_t len, char *buf)
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{
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HASH_CTX ctx;
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_DIAGASSERT(data != 0);
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FNPREFIX(Init)(&ctx);
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FNPREFIX(Update)(&ctx, data, (unsigned int)len);
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return (FNPREFIX(End)(&ctx, buf));
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}
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#endif /* HASH_ALGORITHM */
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