/*    autousb.c: mount usb disk automaticly   This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License version 2 as   published by the Free Software Foundation;*/#define _GNU_SOURCE#include <stdio.h>#include <stdlib.h>#include <fcntl.h>#include <unistd.h>#include <sys/types.h>#include <sys/wait.h>#include <sys/stat.h>#include <string.h>#include <signal.h>#include <sys/param.h>#include <stdio.h>#include "autousb.h"extern int get_par(char *dev, struct par_info *p);static void handler(int sig, siginfo_t *si, void *data);static int write_fstab(char *dev, char *mount_point, char *systype);static int _mount_dev(char *mount_point);static int chk_usb_attached(char *file_name);const char * sysname(unsigned char type);int mount_dev(int num);struct systypes {    unsigned char type;    char *name;} sys_types[] = {    {0, "auto"},    {6, "vfat"},    {0x53, "ext2"}};int main(){	fprintf(stderr,"Leo USB-Auto File Manage Tool\n");	struct sigaction act;	int fd;		act.sa_sigaction = handler;	sigemptyset(&act.sa_mask);	act.sa_flags = SA_SIGINFO;	sigaction(SIGRTMIN, &act, NULL);	while(1){		DBG("start pause...\n");		pause();	}		return 0;}//handler temp use beginstatic void handler(int sig, siginfo_t *si, void *data){		char buf[] = "ls /proc/scsi/";	FILE *ls;	char *line = NULL;	int len;	ls = popen(buf, "r");	if (!ls){		perror("popen");		exit(-1);	}	while(getline(&line, &len, ls) >= 0){		if (strstr(line, "usb-storage-"))			chk_usb_attached(line);//if we use ls /proc/scis,look at usb storage			//we will call function: chk_usb_attached	}	pclose(ls);}//test ,is there is usb disk plug instatic int chk_usb_attached(char *file_name){//the file_name is the result of  "ls /proc/scsi/"	char path[32], path_file[32];	int fd;	char line[1024];	int i;	int j;		for (i = 0; file_name[i] != '\n'; i++){		path[i] = file_name[i];	}	path[i] = '\0';	DBG("path:%s\n", path);	i = atoi(&path[12]);	sprintf(path_file, "/proc/scsi/usb-storage-%d/%d", i, i);	fd = open(path_file, O_RDONLY);	if (fd < 0 ){		DBG("fopen error :%d\n", __LINE__);		exit(-1);	}	for (j=0; j<1024; j++)		line[j] = '0';	if (read(fd, line, 1024) > 0){		//DBG("%s \n", line);		if (strstr(line, "Attached: Yes")){			DBG("Attached: Yes\n");			mount_dev(i);		}	}	close(fd);	return 0;	}static int write_fstab(char *dev, char *mount_point, char *systype){	FILE *fp_fstab;	char *line = NULL;	int len = 0;	DBG("starting %12s", __FUNCTION__);	if (fp_fstab = fopen("/etc/fstab", "a+")){		while(getline(&line, &len, fp_fstab) >=0){			if (strstr(line, dev))				goto out;		}	}	else		exit(-1);	mkdir(mount_point, 666);	fprintf(fp_fstab, "%-23s %-23s %-7s %-15s %d %d\n", dev, mount_point, systype, "noauto,kudzu,owner", 0, 0);	out:	fclose(fp_fstab);	DBG("  ok\n");	return 0;}int mount_dev(int num){	char dev[12];	FILE *fp_mnt;	char *line = NULL;	char mount_point[128];	int len;	int i = 0, j;	struct par_info par[64];	//memset(dev,0, 12);	for (j=0; j<12; j++)		dev[j] = '0';	memset(mount_point, 0, 128);	sprintf(dev, "/dev/sd%c", 'a'+num);	DBG("starting %12s num: %d\n", __FUNCTION__, num);        if (get_par(dev, par) < 0)		exit(-1);	if (par[0].type == 0){		goto nopartitions;	}	        while (par[i].type != 0){                memcpy(dev, par[i++].dev, 12);	nopartitions:                sprintf(mount_point, "/mnt%s",&(dev[4]));		if (fp_mnt = fopen("/proc/mounts", "r")){			while (getline(&line, &len, fp_mnt) >= 0) {							if (strstr(line, dev))					goto mounted;			}		}		else			exit(-1);		DBG("dev: %s, mount_point: %s\n", dev, mount_point);		write_fstab(dev, mount_point, sysname(par[i].type));		_mount_dev(mount_point);				mounted:		fclose(fp_mnt);	}	free(line);	return 0;}	static int _mount_dev(char *mount_point){	char *argv[] = {"/bin/mount", NULL, NULL};	pid_t pid;	//char tmp[64];	//int code = 950;	int status;	//FILE *fp_cfg;        DBG("starting %12s", __FUNCTION__);        if (mount_point == NULL)                return 1;	argv[1] = mount_point;	if (!(pid = fork())){		execv(argv[0], argv);		_exit(1);	}	waitpid(pid, &status, 0);	if (!WIFEXITED(status) || (WEXITSTATUS(status))){		DBG("  failed\n");		return (-1);	}	DBG("  ok\n");	return 0;}const char * sysname(unsigned char type){    struct systypes *s;                                                                                                                                 for (s = sys_types; s - sys_types < SIZE(sys_types); s++)      if (s->type == type)        return s->name;    return "auto";}