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Diffstat (limited to 'src/Common/libzip/zip_source_seek_write.c')
-rw-r--r--src/Common/libzip/zip_source_seek_write.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/src/Common/libzip/zip_source_seek_write.c b/src/Common/libzip/zip_source_seek_write.c
index 66607664..34ae2f5a 100644
--- a/src/Common/libzip/zip_source_seek_write.c
+++ b/src/Common/libzip/zip_source_seek_write.c
@@ -1,9 +1,9 @@
/*
zip_source_seek_write.c -- seek to offset for writing
- Copyright (C) 2014 Dieter Baron and Thomas Klausner
+ Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP archives.
- The authors can be contacted at <libzip@nih.at>
+ The authors can be contacted at <info@libzip.org>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
@@ -17,7 +17,7 @@
3. The names of the authors may not be used to endorse or promote
products derived from this software without specific prior
written permission.
-
+
THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -36,17 +36,21 @@
ZIP_EXTERN int
-zip_source_seek_write(zip_source_t *src, zip_int64_t offset, int whence)
-{
+zip_source_seek_write(zip_source_t *src, zip_int64_t offset, int whence) {
zip_source_args_seek_t args;
-
+
+ if (ZIP_SOURCE_IS_LAYERED(src)) {
+ zip_error_set(&src->error, ZIP_ER_OPNOTSUPP, 0);
+ return -1;
+ }
+
if (!ZIP_SOURCE_IS_OPEN_WRITING(src) || (whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END)) {
zip_error_set(&src->error, ZIP_ER_INVAL, 0);
return -1;
}
-
+
args.offset = offset;
args.whence = whence;
-
+
return (_zip_source_call(src, &args, sizeof(args), ZIP_SOURCE_SEEK_WRITE) < 0 ? -1 : 0);
}