Geografic-Information-System/lib/init/chk_dbase.c

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#ifndef __MINGW32__
#  include <pwd.h>
#endif

int can_make_location (char *gisdbase, char *location)
{
    struct stat s;
    struct passwd *pwd;

/* make sure this is a directory */
    if (stat (gisdbase, &s) != 0)
    {
	fprintf (stderr, "\n** %s not found **\n", gisdbase);
	return 0;
    }
    if (!(s.st_mode & S_IFDIR))
    {
	fprintf (stderr, "\n** %s is not a directory **\n", gisdbase);
	return 0;
    }

/* look for write permission */
    if (access (gisdbase, 2) == 0)
	return 1;
    
    fprintf (stderr, "\nNote\n");
    fprintf (stderr, " You don't have permission under %s to create a new location\n",
	gisdbase);
#ifndef __MINGW32__
    if ((pwd = getpwuid (s.st_uid)))
	fprintf (stderr, " See user %s about creating location %s\n", pwd->pw_name, location);
#endif
    return 0;
}