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/* COVERAGE: process_vm_readv process_vm_writev */
#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <signal.h>
#include <string.h>
#include <sys/uio.h>
#include <sys/wait.h>
char child_buffer[1024];
void do_child()
{
strcpy(child_buffer, "Hello there, we're in the child.");
while (1) {
sleep(1);
}
}
int main()
{
// glibc added support for process_vm_* in glibc 2.15.
#if __GLIBC_PREREQ(2, 15)
pid_t pid = 0;
int status;
char buffer[1024];
struct iovec local[1];
struct iovec remote[1];
pid = fork();
if (pid == 0) { /* child */
alarm(30);
do_child();
return 0;
}
/* Give the child a chance to run. */
sleep(1);
/* Set up the iovecs. */
local[0].iov_base = buffer;
local[0].iov_len = 20;
remote[0].iov_base = child_buffer;
remote[0].iov_len = 20;
/* Read 20 bytes from the child process. */
process_vm_readv(pid, local, 1, remote, 1, 0);
//staptest// process_vm_readv (NNNN, XXXX, 1, XXXX, 1, 0) = 20
/* Change the buffer and set up the iovecs again. */
strcpy(buffer, "From parent");
local[0].iov_len = 12;
remote[0].iov_len = 12;
/* Write 12 bytes into the child process. */
process_vm_writev(pid, local, 1, remote, 1, 0);
//staptest// process_vm_writev (NNNN, XXXX, 1, XXXX, 1, 0) = 12
/* Limit testing. */
process_vm_readv(-1, local, 1, remote, 1, 0);
//staptest// process_vm_readv (-1, XXXX, 1, XXXX, 1, 0) = -NNNN
process_vm_readv(pid, (struct iovec *)-1, 1, remote, 1, 0);
#ifdef __s390__
//staptest// process_vm_readv (NNNN, 0x[7]?[f]+, 1, XXXX, 1, 0) = -NNNN
#else
//staptest// process_vm_readv (NNNN, 0x[f]+, 1, XXXX, 1, 0) = -NNNN
#endif
process_vm_readv(pid, local, -1L, remote, 1, 0);
#if __WORDSIZE == 64
//staptest// process_vm_readv (NNNN, XXXX, 18446744073709551615, XXXX, 1, 0) = -NNNN
#else
//staptest// process_vm_readv (NNNN, XXXX, 4294967295, XXXX, 1, 0) = -NNNN
#endif
process_vm_readv(pid, local, 1, (struct iovec *)-1, 1, 0);
#ifdef __s390__
//staptest// process_vm_readv (NNNN, XXXX, 1, 0x[7]?[f]+, 1, 0) = -NNNN
#else
//staptest// process_vm_readv (NNNN, XXXX, 1, 0x[f]+, 1, 0) = -NNNN
#endif
process_vm_readv(pid, local, 1, remote, -1L, 0);
#if __WORDSIZE == 64
//staptest// process_vm_readv (NNNN, XXXX, 1, XXXX, 18446744073709551615, 0) = -NNNN
#else
//staptest// process_vm_readv (NNNN, XXXX, 1, XXXX, 4294967295, 0) = -NNNN
#endif
process_vm_readv(pid, local, 1, remote, 1, -1L);
#if __WORDSIZE == 64
//staptest// process_vm_readv (NNNN, XXXX, 1, XXXX, 1, 18446744073709551615) = -NNNN
#else
//staptest// process_vm_readv (NNNN, XXXX, 1, XXXX, 1, 4294967295) = -NNNN
#endif
process_vm_writev(-1, local, 1, remote, 1, 0);
//staptest// process_vm_writev (-1, XXXX, 1, XXXX, 1, 0) = -NNNN
process_vm_writev(pid, (struct iovec *)-1, 1, remote, 1, 0);
#ifdef __s390__
//staptest// process_vm_writev (NNNN, 0x[7]?[f]+, 1, XXXX, 1, 0) = -NNNN
#else
//staptest// process_vm_writev (NNNN, 0x[f]+, 1, XXXX, 1, 0) = -NNNN
#endif
process_vm_writev(pid, local, -1L, remote, 1, 0);
#if __WORDSIZE == 64
//staptest// process_vm_writev (NNNN, XXXX, 18446744073709551615, XXXX, 1, 0) = -NNNN
#else
//staptest// process_vm_writev (NNNN, XXXX, 4294967295, XXXX, 1, 0) = -NNNN
#endif
process_vm_writev(pid, local, 1, (struct iovec *)-1, 1, 0);
#ifdef __s390__
//staptest// process_vm_writev (NNNN, XXXX, 1, 0x[7]?[f]+, 1, 0) = -NNNN
#else
//staptest// process_vm_writev (NNNN, XXXX, 1, 0x[f]+, 1, 0) = -NNNN
#endif
process_vm_writev(pid, local, 1, remote, -1L, 0);
#if __WORDSIZE == 64
//staptest// process_vm_writev (NNNN, XXXX, 1, XXXX, 18446744073709551615, 0) = -NNNN
#else
//staptest// process_vm_writev (NNNN, XXXX, 1, XXXX, 4294967295, 0) = -NNNN
#endif
process_vm_writev(pid, local, 1, remote, 1, -1L);
#if __WORDSIZE == 64
//staptest// process_vm_writev (NNNN, XXXX, 1, XXXX, 1, 18446744073709551615) = -NNNN
#else
//staptest// process_vm_writev (NNNN, XXXX, 1, XXXX, 1, 4294967295) = -NNNN
#endif
if (pid > 0) {
(void)kill(pid, SIGKILL); /* kill the child */
/* Reap the child. */
waitpid(pid, &status, 0);
}
#endif
return 0;
}
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