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/* COVERAGE: mmap2 munmap msync mlock mlockall munlock munlockall fstat open close */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
int main()
{
int fd, ret;
struct stat fs;
void * r;
/* create a file with something in it */
fd = creat("foobar",S_IREAD|S_IWRITE);
// open ("foobar", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 4
lseek(fd, 1024, SEEK_SET);
write(fd, "abcdef", 6);
close(fd);
// close (4) = 0
fd = open("foobar", O_RDONLY);
// open ("foobar", O_RDONLY) = 4
/* stat for file size */
ret = fstat(fd, &fs);
// fstat (4, XXXX) = 0
r = mmap(NULL, fs.st_size, PROT_READ, MAP_SHARED, fd, 0);
// mmap[2]* (XXXX, 1030, PROT_READ, MAP_SHARED, 4, XXXX) = XXXX
close(fd);
mlock(r, fs.st_size);
// mlock (XXXX, 1030) = 0
msync(r, fs.st_size, MS_SYNC);
// msync (XXXX, 1030, MS_SYNC) = 0
munlock(r, fs.st_size);
// munlock (XXXX, 1030) = 0
mlockall(MCL_CURRENT);
// mlockall (MCL_CURRENT) =
munlockall();
// munlockall () = 0
munmap(r, fs.st_size);
// munmap (XXXX, 1030) = 0
return 0;
}
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