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#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
int open( const char * pathname, int flags);
int open( const char * pathname,int flags, mode_t mode);
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int main()
{
int fd;
umask(0026);
fd = open("test.txt",O_RDWR | O_CREAT,0666);
if(fd < 0)
perror("open");
return 0;
}
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pid_t pid = fork();
if (pid == 0) {
...
int result = execl(path, "adb", "fork-server", "server", NULL);
} else {
// run a program in a new session
setsid();//֮ǰparentºÍchildÔËÐÐÔÚͬһ¸ösessionÀ¶øÇÒparentÊÇsessionÍ·£¬
//ËùÒÔ×÷ΪsessionÍ·µÄparentÈç¹ûexit½áÊøÖ´Ðеϰ£¬ÄÇô»á»°session×éÖеÄËùÓнø³Ì½«¶¼±»É±ËÀ£»
//ËùÒÔÖ´ÐÐsetsid()Ö®ºó£¬parent½«ÖØÐ»ñµÃÒ»¸öеĻỰsession×éid£¬child½«ÈÔ³ÖÓÐÔÓеĻỰsession×飬
//ÕâʱparentÍ˳öÖ®ºó£¬½«²»»áÓ°Ïìµ½childÁË¡£
}
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