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1ddd7ac9c2
File open was failing when using 2 files with same name. TODO: Look at it in the future. Need to increase writeable file size in fs0. 16 pages don't work.
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Test mmap/munmap posix calls.
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*
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* Copyright (C) 2007, 2008 Bahadir Balban
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*/
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <tests.h>
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#define PAGE_SIZE 0x1000
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int mmaptest(void)
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{
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int fd;
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void *base;
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int x = 0x1000;
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if ((fd = open("./newfile3.txt", O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) < 0)
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perror("open:");
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else
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printf("open: Success.\n");
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/* Extend the file */
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if ((int)lseek(fd, PAGE_SIZE*16, SEEK_SET) < 0)
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perror("lseek");
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else
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printf("lseek: Success.\n");
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if (write(fd, &x, sizeof(x)) < 0)
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perror("write");
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else
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printf("write: Success.\n");
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printf("%s: Calling mmap()\n", __TASKNAME__);
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if ((int)(base = mmap(0, PAGE_SIZE*16, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) < 0)
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perror("mmap");
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else
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printf("mmap: Success: %p\n", base);
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*(unsigned int *)(base + PAGE_SIZE*2) = 0x1000;
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printf("%s: Calling msync()\n", __TASKNAME__);
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if (msync(base + PAGE_SIZE*2, PAGE_SIZE, MS_SYNC) < 0)
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perror("msync");
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else
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printf("msync: Success: %p\n", base);
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printf("%s: Calling munmap()\n", __TASKNAME__);
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if (munmap(base + PAGE_SIZE*2, PAGE_SIZE) < 0)
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perror("munmap");
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else
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printf("munmap: Success: %p\n", base);
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*(unsigned int *)(base + PAGE_SIZE*3) = 0x1000;
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*(unsigned int *)(base + PAGE_SIZE*1) = 0x1000;
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return 0;
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}
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