mirror of
https://github.com/openharmony/third_party_fsverity-utils.git
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Eric Biggers
5cd90ca608
From the 'fsverity' program, split out a library 'libfsverity'.
Currently it supports computing file measurements ("digests"), and
signing those file measurements for use with the fs-verity builtin
signature verification feature.
Rewritten from patches by Jes Sorensen <jsorensen@fb.com>.
I made a lot of improvements, e.g.:
- Separated library and program source into different directories.
- Drastically improved the Makefile.
- Added 'make check' target and rules to build test programs.
- In the shared lib, only export the functions intended to be public.
- Prefixed global functions with "libfsverity_" so that they don't cause
conflicts when the library is built as a static library.
- Made library error messages be sent to a user-specified callback
rather than always be printed to stderr.
- Keep showing OpenSSL error messages.
- Stopped abort()ing in library code, when possible.
- Made libfsverity_digest use native endianness.
- Moved file_size into the merkle_tree_params.
- Made libfsverity_get_hash_name() just return the static strings.
- Made some variables in the API uint32_t instead of uint16_t.
- Shared parse_hash_alg_option() between cmd_enable and cmd_sign.
- Lots of other fixes.
(Folded in a couple Makefile fixes from Jes.)
Reviewed-by: Jes Sorensen <jsorensen@fb.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Utility functions for programs
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*
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* Copyright 2018 Google LLC
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*/
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#ifndef PROGRAMS_UTILS_H
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#define PROGRAMS_UTILS_H
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#include "../common/libfsverity.h"
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#include "../common/common_defs.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void *xmalloc(size_t size);
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void *xzalloc(size_t size);
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void *xmemdup(const void *mem, size_t size);
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char *xstrdup(const char *s);
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__printf(1, 2) __cold void error_msg(const char *format, ...);
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__printf(1, 2) __cold void error_msg_errno(const char *format, ...);
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__printf(1, 2) __cold __noreturn void fatal_error(const char *format, ...);
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__cold __noreturn void assertion_failed(const char *expr,
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const char *file, int line);
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#define ASSERT(e) ({ if (!(e)) assertion_failed(#e, __FILE__, __LINE__); })
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struct filedes {
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int fd;
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char *name; /* filename, for logging or error messages */
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};
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bool open_file(struct filedes *file, const char *filename, int flags, int mode);
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bool get_file_size(struct filedes *file, u64 *size_ret);
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bool full_read(struct filedes *file, void *buf, size_t count);
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bool full_write(struct filedes *file, const void *buf, size_t count);
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bool filedes_close(struct filedes *file);
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bool hex2bin(const char *hex, u8 *bin, size_t bin_len);
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void bin2hex(const u8 *bin, size_t bin_len, char *hex);
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#endif /* PROGRAMS_UTILS_H */
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