what is the error code of stat for non existent file ?
Hello ,...
how to know if file exists or not.
i use to use stat() but i can't find out what exit code or how to know if file dosnot exists.
i thout that stat() will return some error but i can't find any :
i use to use this :
Code:
int exit_code_of_state = -9999;
exit_code_of_state == stat (filename, &stat_p);
but it won't give me any error if a directory dosen't exists
and i know that if stat had error code of -1 he can't state it but if the file dosent exists i don't know how to know that
also how do i use the '~' sign (the user home dir) since i dosent work with (~/.myprogram) directly from c (like i did here)
Code:
#include <sys/stat.h> /* declare the 'stat' structure */
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h> /* printf */
#include <time.h>
#define FILENAME "~/.myprog/" /* PUT YOUR FILE NAME HERE */
/************************************************************************/
char * format_time(time_t cal_time);
/************************************************************************/
int main()
{
file_stat(FILENAME);
return 0;
}
/************************************************************************/
void file_stat(char * filename)
{
struct stat stat_p; /* 'stat_p' is a pointer to a structure
* of type 'stat'. */
/* Get stats for file and place them in
* the structure. */
int exit_code_of_state = -9999;//to see that the exit code can be changed
exit_code_of_state ==(int) stat (filename, &stat_p);
if ( exit_code_of_state == -1)
{
printf(" Error occoured attempting to stat %s\n", filename);
exit(0);
}
/* Print a few structure members. */
if (stat_p.st_size == 0 )
{
//the dir dosen't exists
printf("The dir dosn't exists\n creating new one ");
mkdir(FILENAME , S_IRWXU);
}
else
{
return;
}
}
