155495Sbostic /*- 255860Sbostic * Copyright (c) 1992 The Regents of the University of California. 355495Sbostic * All rights reserved. 455495Sbostic * 555860Sbostic * %sccs.include.redist.c% 655495Sbostic */ 755495Sbostic 855495Sbostic #ifndef lint 9*61378Scgd static char sccsid[] = "@(#)misc.c 5.2 (Berkeley) 06/04/93"; 1055495Sbostic #endif /* not lint */ 1155495Sbostic 1255495Sbostic #include <sys/types.h> 1355860Sbostic 1455495Sbostic #include <unistd.h> 1555495Sbostic #include <errno.h> 1655495Sbostic #include <stdlib.h> 1755495Sbostic #include <stdio.h> 1855495Sbostic #include <string.h> 1955860Sbostic 2055858Sbostic extern char *special; 2155860Sbostic 2255495Sbostic #if __STDC__ 2355495Sbostic #include <stdarg.h> 2455495Sbostic #else 2555495Sbostic #include <varargs.h> 2655495Sbostic #endif 2755495Sbostic 2855495Sbostic void 2955495Sbostic #if __STDC__ 3055858Sbostic err(const int fatal, const char *fmt, ...) 3155495Sbostic #else 3255495Sbostic err(fmt, va_alist) 3355495Sbostic char *fmt; 3455495Sbostic va_dcl 3555495Sbostic #endif 3655495Sbostic { 3755495Sbostic va_list ap; 3855495Sbostic #if __STDC__ 3955495Sbostic va_start(ap, fmt); 4055495Sbostic #else 4155495Sbostic va_start(ap); 4255495Sbostic #endif 4355858Sbostic (void)fprintf(stderr, "%s: ", special); 4455495Sbostic (void)vfprintf(stderr, fmt, ap); 4555495Sbostic va_end(ap); 46*61378Scgd if (errno) 47*61378Scgd (void)fprintf(stderr, " %s", strerror(errno)); 48*61378Scgd (void)fprintf(stderr, "\n"); 4955858Sbostic if (fatal) 5055858Sbostic exit(1); 5155495Sbostic } 5255858Sbostic 5355858Sbostic void 5455858Sbostic get(fd, off, p, len) 5555858Sbostic int fd; 5655858Sbostic off_t off; 5755858Sbostic void *p; 5855858Sbostic size_t len; 5955858Sbostic { 6055858Sbostic int rbytes; 6155858Sbostic 6255858Sbostic if (lseek(fd, off, SEEK_SET) < 0) 6355858Sbostic err(1, "%s: %s", special, strerror(errno)); 6455858Sbostic if ((rbytes = read(fd, p, len)) < 0) 6555858Sbostic err(1, "%s: %s", special, strerror(errno)); 6655858Sbostic if (rbytes != len) 6755858Sbostic err(1, "%s: short read (%d, not %d)", special, rbytes, len); 6855858Sbostic } 69