compat / fopen.con commit git-p4: Unset P4DIFF environment variable when using 'p4 -du diff' (67abd41)
   1#include "../git-compat-util.h"
   2#undef fopen
   3FILE *git_fopen(const char *path, const char *mode)
   4{
   5        FILE *fp;
   6        struct stat st;
   7
   8        if (mode[0] == 'w' || mode[0] == 'a')
   9                return fopen(path, mode);
  10
  11        if (!(fp = fopen(path, mode)))
  12                return NULL;
  13
  14        if (fstat(fileno(fp), &st)) {
  15                fclose(fp);
  16                return NULL;
  17        }
  18
  19        if (S_ISDIR(st.st_mode)) {
  20                fclose(fp);
  21                errno = EISDIR;
  22                return NULL;
  23        }
  24
  25        return fp;
  26}