diff options
Diffstat (limited to 'libbb/fclose_nonstdin.c')
| -rw-r--r-- | libbb/fclose_nonstdin.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libbb/fclose_nonstdin.c b/libbb/fclose_nonstdin.c index 88e8474f2..768ee946d 100644 --- a/libbb/fclose_nonstdin.c +++ b/libbb/fclose_nonstdin.c @@ -16,8 +16,10 @@ int fclose_if_not_stdin(FILE *f) { - if (f != stdin) { - return fclose(f); - } - return 0; + /* Some more paranoid applets want ferror() check too */ + int r = ferror(f); /* NB: does NOT set errno! */ + if (r) errno = EIO; /* so we'll help it */ + if (f != stdin) + return (r | fclose(f)); /* fclose does set errno on error */ + return r; } |