isdir.c

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#include <grass/dbmi.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

int db_isdir(const char *path)
{
    struct stat x;

    if (stat(path, &x) != 0)
        return DB_FAILED;
    return (S_ISDIR(x.st_mode) ? DB_OK : DB_FAILED);
}