mirror of
https://github.com/openharmony/third_party_fsverity-utils.git
synced 2026-07-01 10:05:35 -04:00
Eric Biggers
c7e0612deb
As was done in the kernel, rename "file measurement" to "file digest". "File digest" has ended up being the more intuitive name, and it avoids using multiple names for the same thing. Acked-by: Luca Boccassi <luca.boccassi@microsoft.com> Link: https://lore.kernel.org/r/20201113213314.73616-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* The 'fsverity measure' command
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*
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* Copyright 2018 Google LLC
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*
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* Use of this source code is governed by an MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT.
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*/
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#include "fsverity.h"
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#include <fcntl.h>
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#include <sys/ioctl.h>
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/* Display the fs-verity digest of the given verity file(s). */
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int fsverity_cmd_measure(const struct fsverity_command *cmd,
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int argc, char *argv[])
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{
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struct fsverity_digest *d = NULL;
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struct filedes file;
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char digest_hex[FS_VERITY_MAX_DIGEST_SIZE * 2 + 1];
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char _hash_alg_name[32];
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const char *hash_alg_name;
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int status;
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int i;
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if (argc < 2)
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goto out_usage;
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d = xzalloc(sizeof(*d) + FS_VERITY_MAX_DIGEST_SIZE);
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for (i = 1; i < argc; i++) {
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d->digest_size = FS_VERITY_MAX_DIGEST_SIZE;
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if (!open_file(&file, argv[i], O_RDONLY, 0))
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goto out_err;
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if (ioctl(file.fd, FS_IOC_MEASURE_VERITY, d) != 0) {
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error_msg_errno("FS_IOC_MEASURE_VERITY failed on '%s'",
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file.name);
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filedes_close(&file);
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goto out_err;
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}
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filedes_close(&file);
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ASSERT(d->digest_size <= FS_VERITY_MAX_DIGEST_SIZE);
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bin2hex(d->digest, d->digest_size, digest_hex);
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hash_alg_name = libfsverity_get_hash_name(d->digest_algorithm);
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if (!hash_alg_name) {
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sprintf(_hash_alg_name, "ALG_%u", d->digest_algorithm);
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hash_alg_name = _hash_alg_name;
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}
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printf("%s:%s %s\n", hash_alg_name, digest_hex, argv[i]);
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}
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status = 0;
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out:
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free(d);
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return status;
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out_err:
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status = 1;
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goto out;
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out_usage:
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usage(cmd, stderr);
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status = 2;
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goto out;
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}
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