讀proc/pid得到進程名稱

 #include <stdio.h>

#include <stdlib.h>

#include <sys/procfs.h>

#include <memory.h>

#include <unistd.h>

#include <fcntl.h>

#include <sys/ioctl.h>

#include <sys/types.h>

#include <unistd.h>

#include <stropts.h>

void get_program_name( char *p_name_space ){

char strBuf[100];

memset( strBuf, 0, sizeof( strBuf));

sprintf( strBuf, "/proc/%d/psinfo", getpid());

int fd = open( strBuf, O_RDONLY);

if( fd == -1 ){

printf("open err!");

}

psinfo_t retval;

read(fd, &retval, sizeof(psinfo_t));

char p_name[1024] = "";

sprintf( p_name, "%s", retval.pr_fname );

char *p_name_begin = strchr( p_name, '/');

close(fd);

strcpy( p_name_space, p_name_begin + 1 );

}

int main(){

char p_name[1024] = "";

get_program_name( p_name );

printf("proc name :%s/n",  p_name );

return 0;

}