学步园

 
#include <string.h>  
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>  
#include <dirent.h>

static int do_mkdir(const char *path, mode_t mode) 
{     
	struct stat     st;     
	int             status = 0;      
	if (stat(path, &st) != 0)     
	{         /* Directory does not exist */         
		if (mkdir(path, mode) != 0)             
			status = -1;     
         }     
         else if (!S_ISDIR(st.st_mode))     
	{         
		errno = ENOTDIR;         
		status = -1;     
	}      
	return(status); 
}

/** ** mkpath - ensure all directories in path exist
 ** Algorithm takes the pessimistic view and works top-down to ensure 
 ** each directory in path exists, rather than optimistically creating 
 ** the last element and working backwards. */ 
 static int mkpath(const char *path, mode_t mode) 
 {     
 	  char           *pp;     
 	  char           *sp;     
 	  int             status;     
 	  char           *copypath = strdup(path);      status = 0;     pp = copypath;     
 	  while (status == 0 && (sp = strchr(pp, '/')) != 0)     
 	  {         
 	  	if (sp != pp)         
 	  	{             /* Neither root nor double slash in path */             
 	  		*sp = '\0';      
 	  		printf("func(%s)line(%d), copypath(%s).\n", __func__, __LINE__, copypath);       
 	  		status = do_mkdir(copypath, mode);             
 	  		*sp = '/';         
 	  	}         
 	  	pp = sp + 1;     
 	  }     
 	  if (status == 0)         
 	  	status = do_mkdir(path, mode);     
 	  free(copypath); 
 	  printf("func(%s)line(%d).\n", __func__, __LINE__);      
 	  return (status); 
 }