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/* COVERAGE: copy_file_range */
#define _GNU_SOURCE
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <limits.h>
// We'd like to use the gilbc wrapper here, but it only exists in
// glibc 2.27+. When it does exist, we use our own wrapper.
#if defined(SYS_copy_file_range) && !__GLIBC_PREREQ(2, 27)
static loff_t
copy_file_range(int fd_in, loff_t *off_in, int fd_out,
loff_t *off_out, size_t len, unsigned int flags)
{
return syscall(SYS_copy_file_range, fd_in, off_in, fd_out,
off_out, len, flags);
}
#endif
int main ()
{
#ifdef SYS_copy_file_range
int fd_in, fd_out;
loff_t off_in, off_out;
char buf[] = "Hello world abcdefghijklmnopqrstuvwxyz 01234567890123456789";
loff_t buf_size = sizeof(buf) - 1;
/* Create a file with something in it. */
fd_in = open("foobar", O_WRONLY|O_CREAT, 0666);
write(fd_in, buf, buf_size);
fsync(fd_in);
close(fd_in);
fd_in = open("foobar", O_RDONLY);
fd_out = open("foobar2", O_WRONLY|O_CREAT, 0666);
/* Copy 'foobar' to 'foobar2'. */
off_in = off_out = 0;
copy_file_range(fd_in, &off_in, fd_out, &off_out, buf_size, 0);
//staptest// copy_file_range (NNNN, XXXX, NNNN, XXXX, 59, 0x0) = 59
/* Test variations of the copy_file range to make sure that the
* syscall tapset prints out the correct values. */
copy_file_range(-1, &off_in, fd_out, &off_out, buf_size, 0);
//staptest// copy_file_range (-1, XXXX, NNNN, XXXX, 59, 0x0) = -NNNN
copy_file_range(fd_in, (loff_t*)-1, fd_out, &off_out, buf_size, 0);
#ifdef __s390__
//staptest// copy_file_range (NNNN, 0x[7]?[f]+, NNNN, XXXX, 59, 0x0) = -NNNN
#else
//staptest// copy_file_range (NNNN, 0x[f]+, NNNN, XXXX, 59, 0x0) = -NNNN
#endif
copy_file_range(fd_in, &off_in, -1, &off_out, buf_size, 0);
//staptest// copy_file_range (NNNN, XXXX, -1, XXXX, 59, 0x0) = -NNNN
copy_file_range(fd_in, &off_in, fd_out, (loff_t*)-1, buf_size, 0);
#ifdef __s390__
//staptest// copy_file_range (NNNN, XXXX, NNNN, 0x[7]?[f]+, 59, 0x0) = -NNNN
#else
//staptest// copy_file_range (NNNN, XXXX, NNNN, 0x[f]+, 59, 0x0) = -NNNN
#endif
copy_file_range(fd_in, &off_in, fd_out, &off_out, -1L, 0);
#if __WORDSIZE == 64
//staptest// copy_file_range (NNNN, XXXX, NNNN, XXXX, 18446744073709551615, 0x0) = NNNN
#else
//staptest// copy_file_range (NNNN, XXXX, NNNN, XXXX, 4294967295, 0x0) = NNNN
#endif
/* Note: flags is unused and should be set to 0, otherwise an
* error occurs. This may change if the syscall is developed. */
copy_file_range(fd_in, &off_in, fd_out, &off_out, buf_size, -1);
//staptest// copy_file_range (NNNN, XXXX, NNNN, XXXX, 59, 0xffffffff) = NNNN
close(fd_out);
close(fd_in);
unlink("foobar");
unlink("foobar2");
#endif
return 0;
}
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