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Annotation of 41BSD/cmd/awk/freeze.c, revision 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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