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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [testsuite/] [newlib.elix/] [tmmap.c] - Rev 274
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#include <sys/types.h> #include <sys/mman.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> #include "check.h" int main() { int fd; char *x; FILE *fp; char buf[40]; fd = open("my.file", O_CREAT | O_TRUNC | O_RDWR, 0644); CHECK (fd != -1); CHECK (write (fd, "abcdefgh", 8) == 8); x = (char *)mmap (0, 20, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); CHECK (x != MAP_FAILED); x[3] = 'j'; CHECK (munmap (x, 20) == 0); CHECK (close(fd) != -1); fp = fopen("my.file","r"); CHECK (fp != NULL); CHECK (fread(buf, 1, 20, fp) == 8); CHECK (strncmp (buf, "abcjefgh", 8) == 0); exit (0); }
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