blob: 1b14413474ecab9a9aa6e8c389335fc5c77b58aa
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * fclose_nonstdin implementation for busybox |
4 | * |
5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | /* A number of standard utilities can accept multiple command line args |
11 | * of '-' for stdin, according to SUSv3. So we encapsulate the check |
12 | * here to save a little space. |
13 | */ |
14 | |
15 | #include "libbb.h" |
16 | |
17 | int FAST_FUNC fclose_if_not_stdin(FILE *f) |
18 | { |
19 | /* Some more paranoid applets want ferror() check too */ |
20 | int r = ferror(f); /* NB: does NOT set errno! */ |
21 | if (r) |
22 | errno = EIO; /* so we'll help it */ |
23 | if (f != stdin) |
24 | return (r | fclose(f)); /* fclose does set errno on error */ |
25 | return r; |
26 | } |
27 |