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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 01:33:23 -0700 |
|---|---|---|
| committer | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 12:58:04 +0200 |
| commit | 836b2fe544a5e9b5ce116622cb36fba33838c6fd (patch) | |
| tree | 95e38e4aaa0a6a78e373148b3d0af4aa2ab3d371 /tools/lib/bpf/zip.h | |
| download | linux-stable-836b2fe544a5e9b5ce116622cb36fba33838c6fd.tar.gz linux-stable-836b2fe544a5e9b5ce116622cb36fba33838c6fd.zip | |
selftests/bpf: Check that JMP32 pointer vs zero jumps are not predictedgrafted
Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which
the verifier used to skip, contains an out of bounds map value access,
hence w/o the previous patch the program is accepted. See previous patch
for detailed description.
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Diffstat (limited to 'tools/lib/bpf/zip.h')
| -rw-r--r-- | tools/lib/bpf/zip.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tools/lib/bpf/zip.h b/tools/lib/bpf/zip.h new file mode 100644 index 000000000..1c1bb21fb --- /dev/null +++ b/tools/lib/bpf/zip.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ + +#ifndef __LIBBPF_ZIP_H +#define __LIBBPF_ZIP_H + +#include <linux/types.h> + +/* Represents an open zip archive. + * Only basic ZIP files are supported, in particular the following are not + * supported: + * - encryption + * - streaming + * - multi-part ZIP files + * - ZIP64 + */ +struct zip_archive; + +/* Carries information on name, compression method, and data corresponding to a + * file in a zip archive. + */ +struct zip_entry { + /* Compression method as defined in pkzip spec. 0 means data is uncompressed. */ + __u16 compression; + + /* Non-null terminated name of the file. */ + const char *name; + /* Length of the file name. */ + __u16 name_length; + + /* Pointer to the file data. */ + const void *data; + /* Length of the file data. */ + __u32 data_length; + /* Offset of the file data within the archive. */ + __u32 data_offset; +}; + +/* Open a zip archive. Returns NULL in case of an error. */ +struct zip_archive *zip_archive_open(const char *path); + +/* Close a zip archive and release resources. */ +void zip_archive_close(struct zip_archive *archive); + +/* Look up an entry corresponding to a file in given zip archive. */ +int zip_archive_find_entry(struct zip_archive *archive, const char *name, struct zip_entry *out); + +#endif |