1 #ifndef lint 2 static char sccsid[] = "@(#)freeze.c 4.2 08/11/83"; 3 #endif 4 5 #include "stdio.h" 6 freeze(s) char *s; 7 { int fd; 8 unsigned int *len; 9 len = (unsigned int *)sbrk(0); 10 if((fd = creat(s, 0666)) < 0) { 11 perror(s); 12 return(1); 13 } 14 write(fd, &len, sizeof(len)); 15 write(fd, (char *)0, len); 16 close(fd); 17 return(0); 18 } 19 20 thaw(s) char *s; 21 { int fd; 22 unsigned int *len; 23 if(*s == 0) { 24 fprintf(stderr, "empty restore file\n"); 25 return(1); 26 } 27 if((fd = open(s, 0)) < 0) { 28 perror(s); 29 return(1); 30 } 31 read(fd, &len, sizeof(len)); 32 (void) brk(len); 33 read(fd, (char *)0, len); 34 close(fd); 35 return(0); 36 } 37