diff options
Diffstat (limited to 'wiretap/file.c')
| -rw-r--r-- | wiretap/file.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/wiretap/file.c b/wiretap/file.c index bedaf92b6f..7a24ab3a05 100644 --- a/wiretap/file.c +++ b/wiretap/file.c @@ -1,6 +1,6 @@ /* file.c * - * $Id: file.c,v 1.24 1999/09/24 05:49:50 guy Exp $ + * $Id: file.c,v 1.25 1999/10/05 07:06:05 guy Exp $ * * Wiretap Library * Copyright (c) 1998 by Gilbert Ramirez <gram@verdict.uthscsa.edu> @@ -261,3 +261,40 @@ int wtap_dump_close(wtap_dumper *wdh, int *err) return ret; } +/* + * Routine to return a Wiretap error code (0 for no error, an errno + * for a file error, or a WTAP_ERR_ code for other errors) for an + * I/O stream. + */ +#ifdef HAVE_LIBZ +int +file_error(void *fh) +{ + int errnum; + + gzerror(fh, &errnum); + switch (errnum) { + + case Z_OK: /* no error */ + return 0; + + case Z_STREAM_END: /* EOF - not an error */ + return 0; + + case Z_ERRNO: /* file I/O error */ + return errno; + + default: + return WTAP_ERR_ZLIB + errnum; + } +} +#else /* HAVE_LIBZ */ +int +file_error(FILE *fh) +{ + if (ferror(fh)) + return errno; + else + return 0; +} +#endif /* HAVE_LIBZ */ |