47 lines
1012 B
C
47 lines
1012 B
C
#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/signal.h>
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void erreur(char *s);
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void suite(int n){};
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int main(int argc, char ** argv)
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{
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int temp, fd0, fd1, fd2, pid;
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if((fd0 = open("/dev/null", O_RDONLY)) == -1) erreur("Ouverture fichier null");
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if((fd1 = open("nohup.out", O_WRONLY | O_CREAT | O_TRUNC, 0666)) == -1 ) erreur("Ouverture fichier nohup.out");
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if((fd2 = open("nohup.err", O_WRONLY | O_CREAT | O_TRUNC, 0666)) == -1 ) erreur("Ouverture fichier nohup.err");
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pid = fork();
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if(pid == 0)
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{
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signal(SIGHUP, SIG_IGN);
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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close(0); dup(fd0);
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close(1); dup(fd1);
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close(2); dup(fd2);
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temp = atoi(argv[1]);
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signal(SIGALRM, suite);
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alarm(temp);
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pause();
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execvp(argv[2], argv + 2);
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erreur("Le programme n'a pas fonctionné correctement");
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exit(-1);
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}
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printf("PID fils : %d\n", pid);
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}
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void erreur(char *s)
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{
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perror(s);
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exit(-2);
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}
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