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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [testsuite/] [newlib.elix/] [tmmap.c] - Blame information for rev 829

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Line No. Rev Author Line
1 207 jeremybenn
#include <sys/types.h>
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#include <sys/mman.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include "check.h"
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int main()
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{
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  int fd;
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  char *x;
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  FILE *fp;
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  char buf[40];
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  fd = open("my.file", O_CREAT | O_TRUNC | O_RDWR, 0644);
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  CHECK (fd != -1);
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  CHECK (write (fd, "abcdefgh", 8) == 8);
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  x = (char *)mmap (0, 20, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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  CHECK (x != MAP_FAILED);
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  x[3] = 'j';
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  CHECK (munmap (x, 20) == 0);
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  CHECK (close(fd) != -1);
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  fp = fopen("my.file","r");
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  CHECK (fp != NULL);
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  CHECK (fread(buf, 1, 20, fp) == 8);
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  CHECK (strncmp (buf, "abcjefgh", 8) == 0);
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  exit (0);
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}
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