kaguya
36 lines
865 B
C
36 lines
865 B
C
#include <assert.h>
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#include <stdio.h>
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#include <sys/uio.h>
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#include <unistd.h>
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// Test variable to read and write
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static int test = 42;
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int main() {
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// Read the variable using process_vm_readv
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int temp;
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struct iovec local_iov = {
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.iov_base = &temp,
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.iov_len = sizeof(temp),
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};
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struct iovec remote_iov = {
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.iov_base = &test,
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.iov_len = sizeof(test),
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};
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ssize_t bytes_read = process_vm_readv(getpid(), &local_iov, 1, &remote_iov, 1, 0);
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assert(bytes_read == sizeof(test));
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assert(temp == 42);
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// Write a new value to the variable using process_vm_writev
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int new_value = 1337;
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struct iovec new_local_iov = {
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.iov_base = &new_value,
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.iov_len = sizeof(new_value),
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};
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ssize_t bytes_written = process_vm_writev(getpid(), &new_local_iov, 1, &remote_iov, 1, 0);
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assert(bytes_written == sizeof(new_value));
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assert(test == 1337);
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return 0;
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}
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