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[/] [c0or1k/] [trunk/] [conts/] [posix/] [test0/] [src/] [mmaptest.c] - Rev 2
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/* * Test mmap/munmap posix calls. * * Copyright (C) 2007, 2008 Bahadir Balban */ #include <sys/ipc.h> #include <sys/shm.h> #include <sys/types.h> #include <sys/mman.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <tests.h> #include <errno.h> int mmaptest(void) { int fd; void *base; int x = 0x1000; if ((fd = open("./mmapfile.txt", O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) < 0) goto out_err; /* Extend the file */ if ((int)lseek(fd, PAGE_SIZE*16, SEEK_SET) < 0) goto out_err; if (write(fd, &x, sizeof(x)) < 0) goto out_err; if (IS_ERR(base = mmap(0, PAGE_SIZE*16, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0))) goto out_err; *(unsigned int *)(base + PAGE_SIZE*2) = 0x1000; if (msync(base + PAGE_SIZE*2, PAGE_SIZE, MS_SYNC) < 0) goto out_err; if (munmap(base + PAGE_SIZE*2, PAGE_SIZE) < 0) goto out_err; *(unsigned int *)(base + PAGE_SIZE*3) = 0x1000; *(unsigned int *)(base + PAGE_SIZE*1) = 0x1000; printf("MMAP TEST -- PASSED --\n"); return 0; out_err: printf("MMAP TEST -- FAILED --\n"); return 0; }