From b750101eb236130cf056c675997decbac904cc49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:35:18 +0200 Subject: Adding upstream version 252.22. Signed-off-by: Daniel Baumann --- src/integritysetup/integrity-util.c | 70 +++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 src/integritysetup/integrity-util.c (limited to 'src/integritysetup/integrity-util.c') diff --git a/src/integritysetup/integrity-util.c b/src/integritysetup/integrity-util.c new file mode 100644 index 0000000..c2d2f95 --- /dev/null +++ b/src/integritysetup/integrity-util.c @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#include "integrity-util.h" + +#include "extract-word.h" +#include "fileio.h" +#include "path-util.h" +#include "percent-util.h" + + +static int supported_integrity_algorithm(char *user_supplied) { + if (!STR_IN_SET(user_supplied, "crc32", "crc32c", "sha1", "sha256", "hmac-sha256")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unsupported integrity algorithm (%s)", user_supplied); + return 0; +} + +int parse_integrity_options( + const char *options, + uint32_t *ret_activate_flags, + int *ret_percent, + usec_t *ret_commit_time, + char **ret_data_device, + char **ret_integrity_alg) { + int r; + + for (;;) { + _cleanup_free_ char *word = NULL; + char *val; + + r = extract_first_word(&options, &word, ",", EXTRACT_DONT_COALESCE_SEPARATORS | EXTRACT_UNESCAPE_SEPARATORS); + if (r < 0) + return log_error_errno(r, "Failed to parse options: %m"); + if (r == 0) + break; + else if (streq(word, "allow-discards")) { + if (ret_activate_flags) + *ret_activate_flags |= CRYPT_ACTIVATE_ALLOW_DISCARDS; + } else if ((val = startswith(word, "journal-watermark="))) { + r = parse_percent(val); + if (r < 0) + return log_error_errno(r, "Failed to parse journal-watermark value or value out of range (%s)", val); + if (ret_percent) + *ret_percent = r; + } else if ((val = startswith(word, "journal-commit-time="))) { + usec_t tmp_commit_time; + r = parse_sec(val, &tmp_commit_time); + if (r < 0) + return log_error_errno(r, "Failed to parse journal-commit-time value (%s)", val); + if (ret_commit_time) + *ret_commit_time = tmp_commit_time; + } else if ((val = startswith(word, "data-device="))) { + if (ret_data_device) { + r = free_and_strdup(ret_data_device, val); + if (r < 0) + return log_oom(); + } + } else if ((val = startswith(word, "integrity-algorithm="))) { + r = supported_integrity_algorithm(val); + if (r < 0) + return r; + if (ret_integrity_alg) { + r = free_and_strdup(ret_integrity_alg, val); + if (r < 0) + return log_oom(); + } + } else + log_warning("Encountered unknown option '%s', ignoring.", word); + } + + return r; +} -- cgit v1.2.3