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