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Annotation of 40BSD/cmd/awk/freeze.c, revision 1.1.1.1

1.1       root        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: }

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