kotovalexarian-likes-gitlab/bztsrc--bootboot
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Added LeanFS

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bzt 2021-03-21 12:39:20 +01:00
parent 666d944ac5
commit a0089ab49f
1 changed files with 14 additions and 13 deletions
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27
mkbootimg/lean.c
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@ -42,6 +42,7 @@
#define LEAN_ATTR_IFMT (7 << 29)
#define LEAN_ATTR_IFTYPE(x) ((uint32_t)(x) << 29)
#define LEAN_LOG_BANDSIZE 12
#define LEAN_BITMAPSIZE (1 << (LEAN_LOG_BANDSIZE - 12))
#define LEAN_INODE_SIZE 176
typedef struct {
@ -95,7 +96,7 @@ typedef struct {
uint16_t name_len;
} __attribute__((packed)) lean_dirent_t;
int len_numblk, len_nextblk, len_numband;
int len_numblk, len_nextblk;
lean_super_t *len_sb;
uint32_t len_checksum(void *data, int size)
@ -113,7 +114,7 @@ int len_alloc_blk()
while((uint64_t)len_nextblk < len_sb->sector_count &&
fs_base[(g * (1 << LEAN_LOG_BANDSIZE) + (!g ? len_sb->bitmap_start : 0)) * 512 + o / 8] & (1 << (o & 7))) {
o++; len_nextblk++;
if(o >= (1 << LEAN_LOG_BANDSIZE)) { o = 0; g++; len_nextblk += LEAN_LOG_BANDSIZE; }
if(o >= (1 << LEAN_LOG_BANDSIZE)) { o = 0; g++; len_nextblk += LEAN_BITMAPSIZE; }
}
if((uint64_t)len_nextblk + 1 >= len_sb->sector_count || len_sb->free_sector_count < 1) {
fprintf(stderr,"mkbootimg: partition #%d %s\r\n", fs_no, lang[ERR_TOOBIG]);
@ -122,7 +123,7 @@ int len_alloc_blk()
fs_base[(g * (1 << LEAN_LOG_BANDSIZE) + (!g ? len_sb->bitmap_start : 0)) * 512 + o / 8] |= 1 << (o & 7);
len_sb->free_sector_count--;
r = len_nextblk++;
if(!(len_nextblk % (1 << LEAN_LOG_BANDSIZE))) len_nextblk += LEAN_LOG_BANDSIZE;
if(!(len_nextblk % (1 << LEAN_LOG_BANDSIZE))) len_nextblk += LEAN_BITMAPSIZE;
return r;
}
@ -225,16 +226,16 @@ uint8_t *len_add_dirent(uint8_t *dir, uint64_t toinode, uint64_t ino, uint8_t ty
void len_open(gpt_t *gpt_entry)
{
int i, j;
int i, j, numband;
if(!gpt_entry) { fprintf(stderr,"mkbootimg: %s lean.\r\n", lang[ERR_BADINITRDTYPE]); exit(1); }
len_numblk = (gpt_entry->last - gpt_entry->start + 1);
if(len_numblk < 8 + LEAN_LOG_BANDSIZE) { fprintf(stderr,"mkbootimg: partition #%d %s\r\n", fs_no, lang[ERR_NOSIZE]); exit(1); }
if(len_numblk < 8 + LEAN_BITMAPSIZE) { fprintf(stderr,"mkbootimg: partition #%d %s\r\n", fs_no, lang[ERR_NOSIZE]); exit(1); }
fs_len = len_numblk * 512;
fs_base = realloc(fs_base, fs_len);
if(!fs_base) { fprintf(stderr,"mkbootimg: %s\r\n",lang[ERR_MEM]); exit(1); }
memset(fs_base, 0, fs_len);
len_numband = len_numblk / ((1 << LEAN_LOG_BANDSIZE) * 512);
if(len_numband < 1) len_numband = 1;
numband = len_numblk / ((1 << LEAN_LOG_BANDSIZE) * 512);
if(numband < 1) numband = 1;
len_sb = (lean_super_t*)fs_base;
len_sb->magic = LEAN_SUPER_MAGIC;
len_sb->fs_version = LEAN_SUPER_VERSION;
@ -244,16 +245,16 @@ void len_open(gpt_t *gpt_entry)
memcpy(&len_sb->uuid, &gpt_entry->guid, sizeof(guid_t));
memcpy(&len_sb->volume_label, "NO NAME", 7);
len_sb->sector_count = len_numblk;
len_sb->free_sector_count = len_numblk - 3 - len_numband * LEAN_LOG_BANDSIZE; /* loader, superblock, backup, bitmaps */
len_sb->free_sector_count = len_numblk - 3 - numband * LEAN_BITMAPSIZE; /* loader, superblock, backup, bitmaps */
len_sb->primary_super = 1;
len_sb->backup_super = (len_numblk < (1 << LEAN_LOG_BANDSIZE) ? len_numblk : (1 << LEAN_LOG_BANDSIZE)) - 1;
len_sb->bitmap_start = len_sb->primary_super + 1;
for(j = 0; j < len_numband; j++) {
for(i = 0; i < LEAN_LOG_BANDSIZE + (!j ? (int)len_sb->bitmap_start : 0); i++)
for(j = 0; j < numband; j++) {
for(i = 0; i < LEAN_BITMAPSIZE + (!j ? (int)len_sb->bitmap_start : 0); i++)
fs_base[(j * (1 << LEAN_LOG_BANDSIZE) + (!j ? len_sb->bitmap_start : 0)) * 512 + i / 8] |= 1 << (i & 7);
}
fs_base[len_sb->bitmap_start * 512 + len_sb->backup_super / 8] |= 1 << (len_sb->backup_super & 7);
len_nextblk = len_sb->bitmap_start + LEAN_LOG_BANDSIZE;
len_nextblk = len_sb->bitmap_start + LEAN_BITMAPSIZE;
len_sb->root_inode = len_alloc_inode(0755, LEAN_FT_DIR, 0, t);
len_add_dirent(len_add_dirent(NULL,
len_sb->root_inode, len_sb->root_inode, LEAN_FT_DIR, ".", 1),
@ -275,8 +276,8 @@ void len_add(struct stat *st, char *name, unsigned char *content, int size)
fn = name;
nend = strchr(name, '/');
if(!nend) nend = name + strlen(name);
i = 0; j = 0;
again:
i = 0; j = 0;
inode = (lean_inode_t*)(fs_base + parent * 512);
if(i < inode->extent_count) {
dir = fs_base + inode->extent_start[i] * 512;
@ -302,7 +303,7 @@ again:
j += 16;
}
if(l == nend - fn && !memcmp(d_name, fn, nend - fn)) {
parent = ino; i = 0; j = 0;
parent = ino;
fn = nend + 1;
nend = *nend ? strchr(fn, '/') : NULL;
if(!nend) { nend = fn + strlen(fn); break; }