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Implemented, but untested, global-removes

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This implementation is in theory correct, but of course, being untested,
who knows?

Though this does come with remounting added to all of the directory
tests. This effectively tests that all of the directory creation tests
we have so far maintain grm=0 after each unmount-mount cycle. Which is
valuable.
This commit is contained in:
Christopher Haster
2023-07-10 01:35:54 -05:00
parent cc0ac25b5e
commit c2d9f1b047
6 changed files with 254 additions and 32 deletions
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lfs.h
+14 -6
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@@ -368,12 +368,6 @@ typedef union lfsr_btree {
} inlined;
} lfsr_btree_t;
// space for:
// - type - 1 leb128 - 1 byte (worst case)
// - mid - 1 leb128 - 5 bytes (worst case)
// - rid - 1 leb128 - 5 bytes (worst case)
#define LFSR_GRM_DSIZE (5+5)
typedef struct lfsr_mdir {
// -2 => deleted
// -1 => mroot
@@ -390,6 +384,17 @@ typedef struct lfsr_openedmdir {
lfsr_mdir_t mdir;
} lfsr_openedmdir_t;
// space for:
// - type - 1 leb128 - 1 byte (worst case)
// - mid - 1 leb128 - 5 bytes (worst case)
// - rid - 1 leb128 - 5 bytes (worst case)
#define LFSR_GRM_DSIZE (5+5)
typedef struct lfsr_grm {
lfs_ssize_t mid;
lfs_size_t rid;
} lfsr_grm_t;
typedef struct lfs_mdir {
lfs_block_t pair[2];
@@ -488,6 +493,9 @@ typedef struct lfs {
lfsr_mdir_t mroot;
lfsr_btree_t mtree;
// TODO do we really need separate decoded/encoded grms?
lfsr_grm_t grm_;
uint8_t grm[LFSR_GRM_DSIZE];
uint8_t grmd[LFSR_GRM_DSIZE];