48 lines
968 B
C
48 lines
968 B
C
#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <sys/prctl.h>
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#include <stdlib.h>
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int main(int argc, char** argv)
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{
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if(argc < 2)
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{
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fprintf(stderr, "A process to execute is required\n");
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return 1;
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}
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int ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0);
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if(ret != 0)
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{
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fprintf(stderr, "Unable to enable KSM for process: %s\n", strerror(errno));
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return 2;
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}
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printf("PR_SET_MEMORY_MERGE set to %u\n", prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0));
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pid_t parent_pid = getpid();
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pid_t pid = fork();
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if(pid == 0)
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{
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printf("PR_SET_MEMORY_MERGE in child is %u\n", prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0));
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execvp(argv[1], argv+1);
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fprintf(stderr, "Unable exec process: %s\n", strerror(errno));
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return 3;
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}
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else if(pid == -1)
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{
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fprintf(stderr, "Unable fork: %s\n", strerror(errno));
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}
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else if(pid == -1)
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{
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waitpid(pid, NULL, 0);
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}
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return 0;
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}
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