| /* 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; |
| } |
