mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-01-23 00:07:07 +03:00
101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
#include <errno.h>
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#include <unistd.h>
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#include <uuid/uuid.h>
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#include "cmds.h"
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#include "checksum.h"
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#include "crypto.h"
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#include "libbcachefs.h"
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int cmd_unlock(int argc, char *argv[])
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{
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struct bch_sb_handle sb;
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const char *err;
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char *passphrase;
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if (argc != 2)
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die("Please supply a single device");
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err = bch2_read_super(argv[1], bch2_opts_empty(), &sb);
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if (err)
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die("Error opening %s: %s", argv[1], err);
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passphrase = read_passphrase("Enter passphrase: ");
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bch2_add_key(sb.sb, passphrase);
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memzero_explicit(passphrase, strlen(passphrase));
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free(passphrase);
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return 0;
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}
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int cmd_set_passphrase(int argc, char *argv[])
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{
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struct bch_opts opts = bch2_opts_empty();
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struct bch_fs *c = NULL;
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const char *err;
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if (argc < 2)
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die("Please supply one or more devices");
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opt_set(opts, nostart, true);
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err = bch2_fs_open(argv + 1, argc - 1, opts, &c);
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if (err)
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die("Error opening %s: %s", argv[1], err);
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struct bch_sb_field_crypt *crypt = bch2_sb_get_crypt(c->disk_sb);
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if (!crypt)
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die("Filesystem does not have encryption enabled");
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struct bch_encrypted_key new_key;
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new_key.magic = BCH_KEY_MAGIC;
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int ret = bch2_decrypt_sb_key(c, crypt, &new_key.key);
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if (ret)
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die("Error getting current key");
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char *new_passphrase = read_passphrase_twice("Enter new passphrase: ");
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struct bch_key passphrase_key = derive_passphrase(crypt, new_passphrase);
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if (bch2_chacha_encrypt_key(&passphrase_key, __bch2_sb_key_nonce(c->disk_sb),
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&new_key, sizeof(new_key)))
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die("error encrypting key");
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crypt->key = new_key;
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bch2_write_super(c);
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bch2_fs_stop(c);
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return 0;
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}
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int cmd_remove_passphrase(int argc, char *argv[])
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{
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struct bch_opts opts = bch2_opts_empty();
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struct bch_fs *c = NULL;
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const char *err;
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if (argc < 2)
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die("Please supply one or more devices");
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opt_set(opts, nostart, true);
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err = bch2_fs_open(argv + 1, argc - 1, opts, &c);
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if (err)
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die("Error opening %s: %s", argv[1], err);
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struct bch_sb_field_crypt *crypt = bch2_sb_get_crypt(c->disk_sb);
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if (!crypt)
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die("Filesystem does not have encryption enabled");
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struct bch_encrypted_key new_key;
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new_key.magic = BCH_KEY_MAGIC;
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int ret = bch2_decrypt_sb_key(c, crypt, &new_key.key);
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if (ret)
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die("Error getting current key");
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crypt->key = new_key;
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bch2_write_super(c);
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bch2_fs_stop(c);
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return 0;
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}
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