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[86.229.230.171]) by smtp.gmail.com with ESMTPSA id u4sm599733wml.0.2021.04.14.14.44.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Apr 2021 14:44:50 -0700 (PDT) From: Fabrice Fontaine To: buildroot@buildroot.org Date: Wed, 14 Apr 2021 23:44:39 +0200 Message-Id: <20210414214439.1381969-1-fontaine.fabrice@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Subject: [Buildroot] [PATCH 1/1] package/genext2fs: bump to version 1.5.0 X-BeenThere: buildroot@busybox.net X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion and development of buildroot List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fabrice Fontaine , Thomas Petazzoni Errors-To: buildroot-bounces@busybox.net Sender: "buildroot" - Retrieve latest version from github - Drop patch (already in version) Fixes: - https://bugs.buildroot.org/show_bug.cgi?id=13741 Signed-off-by: Fabrice Fontaine --- ...0001-update-genext2fs.c-to-rev-1.118.patch | 2971 ----------------- package/genext2fs/genext2fs.hash | 2 +- package/genext2fs/genext2fs.mk | 6 +- 3 files changed, 5 insertions(+), 2974 deletions(-) delete mode 100644 package/genext2fs/0001-update-genext2fs.c-to-rev-1.118.patch diff --git a/package/genext2fs/0001-update-genext2fs.c-to-rev-1.118.patch b/package/genext2fs/0001-update-genext2fs.c-to-rev-1.118.patch deleted file mode 100644 index 755ee9dee2..0000000000 --- a/package/genext2fs/0001-update-genext2fs.c-to-rev-1.118.patch +++ /dev/null @@ -1,2971 +0,0 @@ -[PATCH] update genext2fs.c to CVS rev 1.118 - -See http://genext2fs.cvs.sourceforge.net/viewvc/genext2fs/genext2fs/genext2fs.c?view=log -for details. - -Numerous bugfixes, large file and filesystem support, rev 1 filesystems, -volume id support, block size, .. - -Signed-off-by: Peter Korsgaard ---- - cache.h | 128 ++++ - genext2fs.c | 1870 ++++++++++++++++++++++++++++++++++++++++++------------------ - list.h | 78 ++ - 3 files changed, 1527 insertions(+), 549 deletions(-) - -Index: genext2fs-1.4.1/genext2fs.c -=================================================================== ---- genext2fs-1.4.1.orig/genext2fs.c -+++ genext2fs-1.4.1/genext2fs.c -@@ -53,6 +53,12 @@ - // along with -q, -P, -U - - -+/* -+ * Allow fseeko/off_t to be 64-bit offsets to allow filesystems and -+ * individual files >2GB. -+ */ -+#define _FILE_OFFSET_BITS 64 -+ - #include - #include - -@@ -107,10 +113,8 @@ - - #if HAVE_DIRENT_H - # include --# define NAMLEN(dirent) strlen((dirent)->d_name) - #else - # define dirent direct --# define NAMLEN(dirent) (dirent)->d_namlen - # if HAVE_SYS_NDIR_H - # include - # endif -@@ -144,6 +148,8 @@ - # include - #endif - -+#include "cache.h" -+ - struct stats { - unsigned long nblocks; - unsigned long ninodes; -@@ -151,13 +157,42 @@ - - // block size - --#define BLOCKSIZE 1024 -+static int blocksize = 1024; -+ -+#define SUPERBLOCK_OFFSET 1024 -+#define SUPERBLOCK_SIZE 1024 -+ -+#define BLOCKSIZE blocksize - #define BLOCKS_PER_GROUP 8192 - #define INODES_PER_GROUP 8192 - /* Percentage of blocks that are reserved.*/ - #define RESERVED_BLOCKS 5/100 - #define MAX_RESERVED_BLOCKS 25/100 - -+/* The default value for s_creator_os. */ -+#if defined(__linux__) && defined(EXT2_OS_LINUX) -+#define CREATOR_OS EXT2_OS_LINUX -+#define CREATOR_OS_NAME "linux" -+#else -+#if defined(__GNU__) && defined(EXT2_OS_HURD) -+#define CREATOR_OS EXT2_OS_HURD -+#define CREATOR_OS_NAME "hurd" -+#else -+#if defined(__FreeBSD__) && defined(EXT2_OS_FREEBSD) -+#define CREATOR_OS EXT2_OS_FREEBSD -+#define CREATOR_OS_NAME "freebsd" -+#else -+#if defined(LITES) && defined(EXT2_OS_LITES) -+#define CREATOR_OS EXT2_OS_LITES -+#define CREATOR_OS_NAME "lites" -+#else -+#define CREATOR_OS EXT2_OS_LINUX /* by default */ -+#define CREATOR_OS_NAME "linux" -+#endif /* defined(LITES) && defined(EXT2_OS_LITES) */ -+#endif /* defined(__FreeBSD__) && defined(EXT2_OS_FREEBSD) */ -+#endif /* defined(__GNU__) && defined(EXT2_OS_HURD) */ -+#endif /* defined(__linux__) && defined(EXT2_OS_LINUX) */ -+ - - // inode block size (why is it != BLOCKSIZE ?!?) - /* The field i_blocks in the ext2 inode stores the number of data blocks -@@ -190,6 +225,14 @@ - #define EXT2_TIND_BLOCK 14 // triple indirect block - #define EXT2_INIT_BLOCK 0xFFFFFFFF // just initialized (not really a block address) - -+// codes for operating systems -+ -+#define EXT2_OS_LINUX 0 -+#define EXT2_OS_HURD 1 -+#define EXT2_OS_MASIX 2 -+#define EXT2_OS_FREEBSD 3 -+#define EXT2_OS_LITES 4 -+ - // end of a block walk - - #define WALK_END 0xFFFFFFFE -@@ -227,44 +270,46 @@ - #define FM_IWOTH 0000002 // write - #define FM_IXOTH 0000001 // execute - --// options -- --#define OP_HOLES 0x01 // make files with holes -- - /* Defines for accessing group details */ - - // Number of groups in the filesystem - #define GRP_NBGROUPS(fs) \ -- (((fs)->sb.s_blocks_count - fs->sb.s_first_data_block + \ -- (fs)->sb.s_blocks_per_group - 1) / (fs)->sb.s_blocks_per_group) -+ (((fs)->sb->s_blocks_count - fs->sb->s_first_data_block + \ -+ (fs)->sb->s_blocks_per_group - 1) / (fs)->sb->s_blocks_per_group) - - // Get group block bitmap (bbm) given the group number --#define GRP_GET_GROUP_BBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_block_bitmap) ) -+#define GRP_GET_GROUP_BBM(fs,grp,bi) (get_blk((fs),(grp)->bg_block_bitmap,(bi))) -+#define GRP_PUT_GROUP_BBM(bi) ( put_blk((bi)) ) - - // Get group inode bitmap (ibm) given the group number --#define GRP_GET_GROUP_IBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_inode_bitmap) ) -- -+#define GRP_GET_GROUP_IBM(fs,grp,bi) (get_blk((fs), (grp)->bg_inode_bitmap,(bi))) -+#define GRP_PUT_GROUP_IBM(bi) ( put_blk((bi)) ) -+ - // Given an inode number find the group it belongs to --#define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb.s_inodes_per_group) -+#define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb->s_inodes_per_group) - - //Given an inode number get the inode bitmap that covers it --#define GRP_GET_INODE_BITMAP(fs,nod) \ -- ( GRP_GET_GROUP_IBM((fs),GRP_GROUP_OF_INODE((fs),(nod))) ) -+#define GRP_GET_INODE_BITMAP(fs,nod,bi,gi) \ -+ ( GRP_GET_GROUP_IBM((fs),get_gd(fs,GRP_GROUP_OF_INODE((fs),(nod)),gi),bi) ) -+#define GRP_PUT_INODE_BITMAP(bi,gi) \ -+ ( GRP_PUT_GROUP_IBM((bi)),put_gd((gi)) ) - - //Given an inode number find its offset within the inode bitmap that covers it - #define GRP_IBM_OFFSET(fs,nod) \ -- ( (nod) - GRP_GROUP_OF_INODE((fs),(nod))*(fs)->sb.s_inodes_per_group ) -+ ( (nod) - GRP_GROUP_OF_INODE((fs),(nod))*(fs)->sb->s_inodes_per_group ) - - // Given a block number find the group it belongs to --#define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb.s_blocks_per_group) -+#define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb->s_blocks_per_group) - --//Given a block number get the block bitmap that covers it --#define GRP_GET_BLOCK_BITMAP(fs,blk) \ -- ( GRP_GET_GROUP_BBM((fs),GRP_GROUP_OF_BLOCK((fs),(blk))) ) -+//Given a block number get/put the block bitmap that covers it -+#define GRP_GET_BLOCK_BITMAP(fs,blk,bi,gi) \ -+ ( GRP_GET_GROUP_BBM((fs),get_gd(fs,GRP_GROUP_OF_BLOCK((fs),(blk)),(gi)),(bi)) ) -+#define GRP_PUT_BLOCK_BITMAP(bi,gi) \ -+ ( GRP_PUT_GROUP_BBM((bi)),put_gd((gi)) ) - - //Given a block number find its offset within the block bitmap that covers it - #define GRP_BBM_OFFSET(fs,blk) \ -- ( (blk) - GRP_GROUP_OF_BLOCK((fs),(blk))*(fs)->sb.s_blocks_per_group ) -+ ( (blk) - GRP_GROUP_OF_BLOCK((fs),(blk))*(fs)->sb->s_blocks_per_group ) - - - // used types -@@ -286,7 +331,9 @@ - // older solaris. Note that this is still not very portable, in that - // the return value cannot be trusted. - --#if SCANF_CAN_MALLOC -+#if 0 // SCANF_CAN_MALLOC -+// C99 define "a" for floating point, so you can have runtime surprise -+// according the library versions - # define SCANF_PREFIX "a" - # define SCANF_STRING(s) (&s) - #else -@@ -430,6 +477,17 @@ - ((val<<8)&0xFF0000) | (val<<24)); - } - -+static inline int -+is_blk_empty(uint8 *b) -+{ -+ uint32 i; -+ uint32 *v = (uint32 *) b; -+ -+ for(i = 0; i < BLOCKSIZE / 4; i++) -+ if (*v++) -+ return 0; -+ return 1; -+} - - // on-disk structures - // this trick makes me declare things only once -@@ -460,7 +518,22 @@ - udecl32(s_creator_os) /* Indicator of which OS created the filesystem */ \ - udecl32(s_rev_level) /* The revision level of the filesystem */ \ - udecl16(s_def_resuid) /* The default uid for reserved blocks */ \ -- udecl16(s_def_resgid) /* The default gid for reserved blocks */ -+ udecl16(s_def_resgid) /* The default gid for reserved blocks */ \ -+ /* rev 1 version fields start here */ \ -+ udecl32(s_first_ino) /* First non-reserved inode */ \ -+ udecl16(s_inode_size) /* size of inode structure */ \ -+ udecl16(s_block_group_nr) /* block group # of this superblock */ \ -+ udecl32(s_feature_compat) /* compatible feature set */ \ -+ udecl32(s_feature_incompat) /* incompatible feature set */ \ -+ udecl32(s_feature_ro_compat) /* readonly-compatible feature set */ \ -+ utdecl8(s_uuid,16) /* 128-bit uuid for volume */ \ -+ utdecl8(s_volume_name,16) /* volume name */ \ -+ utdecl8(s_last_mounted,64) /* directory where last mounted */ \ -+ udecl32(s_algorithm_usage_bitmap) /* For compression */ -+ -+#define EXT2_GOOD_OLD_FIRST_INO 11 -+#define EXT2_GOOD_OLD_INODE_SIZE 128 -+#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 - - #define groupdescriptor_decl \ - udecl32(bg_block_bitmap) /* Block number of the block bitmap */ \ -@@ -500,6 +573,7 @@ - - #define decl8(x) int8 x; - #define udecl8(x) uint8 x; -+#define utdecl8(x,n) uint8 x[n]; - #define decl16(x) int16 x; - #define udecl16(x) uint16 x; - #define decl32(x) int32 x; -@@ -509,7 +583,7 @@ - typedef struct - { - superblock_decl -- uint32 s_reserved[235]; // Reserved -+ uint32 s_reserved[205]; // Reserved - } superblock; - - typedef struct -@@ -527,10 +601,9 @@ - typedef struct - { - directory_decl -- char d_name[0]; - } directory; - --typedef uint8 block[BLOCKSIZE]; -+typedef uint8 *block; - - /* blockwalker fields: - The blockwalker is used to access all the blocks of a file (including -@@ -567,23 +640,41 @@ - uint32 bptind; - } blockwalker; - -+#define HDLINK_CNT 16 -+struct hdlink_s -+{ -+ uint32 src_inode; -+ uint32 dst_nod; -+}; -+ -+struct hdlinks_s -+{ -+ int32 count; -+ struct hdlink_s *hdl; -+}; - - /* Filesystem structure that support groups */ --#if BLOCKSIZE == 1024 - typedef struct - { -- block zero; // The famous block 0 -- superblock sb; // The superblock -- groupdescriptor gd[0]; // The group descriptors -+ FILE *f; -+ superblock *sb; -+ int swapit; -+ int32 hdlink_cnt; -+ struct hdlinks_s hdlinks; -+ -+ int holes; -+ -+ listcache blks; -+ listcache gds; -+ listcache inodes; -+ listcache blkmaps; - } filesystem; --#else --#error UNHANDLED BLOCKSIZE --#endif - - // now the endianness swap - - #undef decl8 - #undef udecl8 -+#undef utdecl8 - #undef decl16 - #undef udecl16 - #undef decl32 -@@ -592,28 +683,13 @@ - - #define decl8(x) - #define udecl8(x) -+#define utdecl8(x,n) - #define decl16(x) this->x = swab16(this->x); - #define udecl16(x) this->x = swab16(this->x); - #define decl32(x) this->x = swab32(this->x); - #define udecl32(x) this->x = swab32(this->x); - #define utdecl32(x,n) { int i; for(i=0; ix[i] = swab32(this->x[i]); } - --#define HDLINK_CNT 16 --static int32 hdlink_cnt = HDLINK_CNT; --struct hdlink_s --{ -- uint32 src_inode; -- uint32 dst_nod; --}; -- --struct hdlinks_s --{ -- int32 count; -- struct hdlink_s *hdl; --}; -- --static struct hdlinks_s hdlinks; -- - static void - swap_sb(superblock *sb) - { -@@ -633,9 +709,24 @@ - static void - swap_nod(inode *nod) - { -+ uint32 nblk; -+ - #define this nod - inode_decl - #undef this -+ -+ // block and character inodes store the major and minor in the -+ // i_block, so we need to unswap to get those. Also, if it's -+ // zero iblocks, put the data back like it belongs. -+ nblk = nod->i_blocks / INOBLK; -+ if ((nod->i_size && !nblk) -+ || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) -+ || ((nod->i_mode & FM_IFCHR) == FM_IFCHR)) -+ { -+ int i; -+ for(i = 0; i <= EXT2_TIND_BLOCK; i++) -+ nod->i_block[i] = swab32(nod->i_block[i]); -+ } - } - - static void -@@ -657,6 +748,7 @@ - - #undef decl8 - #undef udecl8 -+#undef utdecl8 - #undef decl16 - #undef udecl16 - #undef decl32 -@@ -770,15 +862,15 @@ - } - - int --is_hardlink(ino_t inode) -+is_hardlink(filesystem *fs, ino_t inode) - { - int i; - -- for(i = 0; i < hdlinks.count; i++) { -- if(hdlinks.hdl[i].src_inode == inode) -+ for(i = 0; i < fs->hdlinks.count; i++) { -+ if(fs->hdlinks.hdl[i].src_inode == inode) - return i; - } -- return -1; -+ return -1; - } - - // printf helper macro -@@ -789,6 +881,8 @@ - get_workblk(void) - { - unsigned char* b=calloc(1,BLOCKSIZE); -+ if (!b) -+ error_msg_and_die("get_workblk() failed, out of memory"); - return b; - } - static inline void -@@ -811,24 +905,464 @@ - return b[(item-1) / 8] & (1 << ((item-1) % 8)); - } - --// return a given block from a filesystem -+// Used by get_blk/put_blk to hold information about a block owned -+// by the user. -+typedef struct -+{ -+ cache_link link; -+ -+ filesystem *fs; -+ uint32 blk; -+ uint8 *b; -+ uint32 usecount; -+} blk_info; -+ -+#define MAX_FREE_CACHE_BLOCKS 100 -+ -+static uint32 -+blk_elem_val(cache_link *elem) -+{ -+ blk_info *bi = container_of(elem, blk_info, link); -+ return bi->blk; -+} -+ -+static void -+blk_freed(cache_link *elem) -+{ -+ blk_info *bi = container_of(elem, blk_info, link); -+ -+ if (fseeko(bi->fs->f, ((off_t) bi->blk) * BLOCKSIZE, SEEK_SET)) -+ perror_msg_and_die("fseek"); -+ if (fwrite(bi->b, BLOCKSIZE, 1, bi->fs->f) != 1) -+ perror_msg_and_die("get_blk: write"); -+ free(bi->b); -+ free(bi); -+} -+ -+// Return a given block from a filesystem. Make sure to call -+// put_blk when you are done with it. - static inline uint8 * --get_blk(filesystem *fs, uint32 blk) -+get_blk(filesystem *fs, uint32 blk, blk_info **rbi) - { -- return (uint8*)fs + blk*BLOCKSIZE; -+ cache_link *curr; -+ blk_info *bi; -+ -+ if (blk >= fs->sb->s_blocks_count) -+ error_msg_and_die("Internal error, block out of range"); -+ -+ curr = cache_find(&fs->blks, blk); -+ if (curr) { -+ bi = container_of(curr, blk_info, link); -+ bi->usecount++; -+ goto out; -+ } -+ -+ bi = malloc(sizeof(*bi)); -+ if (!bi) -+ error_msg_and_die("get_blk: out of memory"); -+ bi->fs = fs; -+ bi->blk = blk; -+ bi->usecount = 1; -+ bi->b = malloc(BLOCKSIZE); -+ if (!bi->b) -+ error_msg_and_die("get_blk: out of memory"); -+ cache_add(&fs->blks, &bi->link); -+ if (fseeko(fs->f, ((off_t) blk) * BLOCKSIZE, SEEK_SET)) -+ perror_msg_and_die("fseek"); -+ if (fread(bi->b, BLOCKSIZE, 1, fs->f) != 1) { -+ if (ferror(fs->f)) -+ perror_msg_and_die("fread"); -+ memset(bi->b, 0, BLOCKSIZE); -+ } -+ -+out: -+ *rbi = bi; -+ return bi->b; - } - - // return a given inode from a filesystem --static inline inode * --get_nod(filesystem *fs, uint32 nod) -+static inline void -+put_blk(blk_info *bi) -+{ -+ if (bi->usecount == 0) -+ error_msg_and_die("Internal error: put_blk usecount zero"); -+ bi->usecount--; -+ if (bi->usecount == 0) -+ /* Free happens in the cache code */ -+ cache_item_set_unused(&bi->fs->blks, &bi->link); -+} -+ -+typedef struct - { -- int grp,offset; -+ cache_link link; -+ -+ filesystem *fs; -+ int gds; -+ blk_info *bi; -+ groupdescriptor *gd; -+ uint32 usecount; -+} gd_info; -+ -+#define MAX_FREE_CACHE_GDS 100 -+ -+static uint32 -+gd_elem_val(cache_link *elem) -+{ -+ gd_info *gi = container_of(elem, gd_info, link); -+ return gi->gds; -+} -+ -+static void -+gd_freed(cache_link *elem) -+{ -+ gd_info *gi = container_of(elem, gd_info, link); -+ -+ if (gi->fs->swapit) -+ swap_gd(gi->gd); -+ put_blk(gi->bi); -+ free(gi); -+} -+ -+#define GDS_START ((SUPERBLOCK_OFFSET + SUPERBLOCK_SIZE + BLOCKSIZE - 1) / BLOCKSIZE) -+#define GDS_PER_BLOCK (BLOCKSIZE / sizeof(groupdescriptor)) -+// the group descriptors are aligned on the block size -+static inline groupdescriptor * -+get_gd(filesystem *fs, uint32 no, gd_info **rgi) -+{ -+ uint32 gdblk; -+ uint32 offset; -+ gd_info *gi; -+ cache_link *curr; -+ -+ curr = cache_find(&fs->gds, no); -+ if (curr) { -+ gi = container_of(curr, gd_info, link); -+ gi->usecount++; -+ goto out; -+ } -+ -+ gi = malloc(sizeof(*gi)); -+ if (!gi) -+ error_msg_and_die("get_gd: out of memory"); -+ gi->fs = fs; -+ gi->gds = no; -+ gi->usecount = 1; -+ gdblk = GDS_START + (no / GDS_PER_BLOCK); -+ offset = no % GDS_PER_BLOCK; -+ gi->gd = ((groupdescriptor *) get_blk(fs, gdblk, &gi->bi)) + offset; -+ cache_add(&fs->gds, &gi->link); -+ if (fs->swapit) -+ swap_gd(gi->gd); -+ out: -+ *rgi = gi; -+ -+ return gi->gd; -+} -+ -+static inline void -+put_gd(gd_info *gi) -+{ -+ if (gi->usecount == 0) -+ error_msg_and_die("Internal error: put_gd usecount zero"); -+ -+ gi->usecount--; -+ if (gi->usecount == 0) -+ /* Free happens in the cache code */ -+ cache_item_set_unused(&gi->fs->gds, &gi->link); -+} -+ -+// Used by get_blkmap/put_blkmap to hold information about an block map -+// owned by the user. -+typedef struct -+{ -+ cache_link link; -+ -+ filesystem *fs; -+ uint32 blk; -+ uint8 *b; -+ blk_info *bi; -+ uint32 usecount; -+} blkmap_info; -+ -+#define MAX_FREE_CACHE_BLOCKMAPS 100 -+ -+static uint32 -+blkmap_elem_val(cache_link *elem) -+{ -+ blkmap_info *bmi = container_of(elem, blkmap_info, link); -+ return bmi->blk; -+} -+ -+static void -+blkmap_freed(cache_link *elem) -+{ -+ blkmap_info *bmi = container_of(elem, blkmap_info, link); -+ -+ if (bmi->fs->swapit) -+ swap_block(bmi->b); -+ put_blk(bmi->bi); -+ free(bmi); -+} -+ -+// Return a given block map from a filesystem. Make sure to call -+// put_blkmap when you are done with it. -+static inline uint32 * -+get_blkmap(filesystem *fs, uint32 blk, blkmap_info **rbmi) -+{ -+ blkmap_info *bmi; -+ cache_link *curr; -+ -+ curr = cache_find(&fs->blkmaps, blk); -+ if (curr) { -+ bmi = container_of(curr, blkmap_info, link); -+ bmi->usecount++; -+ goto out; -+ } -+ -+ bmi = malloc(sizeof(*bmi)); -+ if (!bmi) -+ error_msg_and_die("get_blkmap: out of memory"); -+ bmi->fs = fs; -+ bmi->blk = blk; -+ bmi->b = get_blk(fs, blk, &bmi->bi); -+ bmi->usecount = 1; -+ cache_add(&fs->blkmaps, &bmi->link); -+ -+ if (fs->swapit) -+ swap_block(bmi->b); -+ out: -+ *rbmi = bmi; -+ return (uint32 *) bmi->b; -+} -+ -+static inline void -+put_blkmap(blkmap_info *bmi) -+{ -+ if (bmi->usecount == 0) -+ error_msg_and_die("Internal error: put_blkmap usecount zero"); -+ -+ bmi->usecount--; -+ if (bmi->usecount == 0) -+ /* Free happens in the cache code */ -+ cache_item_set_unused(&bmi->fs->blkmaps, &bmi->link); -+} -+ -+// Used by get_nod/put_nod to hold information about an inode owned -+// by the user. -+typedef struct -+{ -+ cache_link link; -+ -+ filesystem *fs; -+ uint32 nod; -+ uint8 *b; -+ blk_info *bi; - inode *itab; -+ uint32 usecount; -+} nod_info; -+ -+#define MAX_FREE_CACHE_INODES 100 -+ -+static uint32 -+inode_elem_val(cache_link *elem) -+{ -+ nod_info *ni = container_of(elem, nod_info, link); -+ return ni->nod; -+} -+ -+static void -+inode_freed(cache_link *elem) -+{ -+ nod_info *ni = container_of(elem, nod_info, link); -+ -+ if (ni->fs->swapit) -+ swap_nod(ni->itab); -+ put_blk(ni->bi); -+ free(ni); -+} -+ -+#define INODES_PER_BLOCK (BLOCKSIZE / sizeof(inode)) - -- offset = GRP_IBM_OFFSET(fs,nod); -+// return a given inode from a filesystem -+static inline inode * -+get_nod(filesystem *fs, uint32 nod, nod_info **rni) -+{ -+ uint32 grp, boffset, offset; -+ cache_link *curr; -+ groupdescriptor *gd; -+ gd_info *gi; -+ nod_info *ni; -+ -+ curr = cache_find(&fs->inodes, nod); -+ if (curr) { -+ ni = container_of(curr, nod_info, link); -+ ni->usecount++; -+ goto out; -+ } -+ -+ ni = malloc(sizeof(*ni)); -+ if (!ni) -+ error_msg_and_die("get_nod: out of memory"); -+ ni->fs = fs; -+ ni->nod = nod; -+ ni->usecount = 1; -+ cache_add(&fs->inodes, &ni->link); -+ -+ offset = GRP_IBM_OFFSET(fs,nod) - 1; -+ boffset = offset / INODES_PER_BLOCK; -+ offset %= INODES_PER_BLOCK; - grp = GRP_GROUP_OF_INODE(fs,nod); -- itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table); -- return itab+offset-1; -+ gd = get_gd(fs, grp, &gi); -+ ni->b = get_blk(fs, gd->bg_inode_table + boffset, &ni->bi); -+ ni->itab = ((inode *) ni->b) + offset; -+ if (fs->swapit) -+ swap_nod(ni->itab); -+ put_gd(gi); -+ out: -+ *rni = ni; -+ return ni->itab; -+} -+ -+static inline void -+put_nod(nod_info *ni) -+{ -+ if (ni->usecount == 0) -+ error_msg_and_die("Internal error: put_nod usecount zero"); -+ -+ ni->usecount--; -+ if (ni->usecount == 0) -+ /* Free happens in the cache code */ -+ cache_item_set_unused(&ni->fs->inodes, &ni->link); -+} -+ -+// Used to hold state information while walking a directory inode. -+typedef struct -+{ -+ directory d; -+ filesystem *fs; -+ uint32 nod; -+ directory *last_d; -+ uint8 *b; -+ blk_info *bi; -+} dirwalker; -+ -+// Start a directory walk on the given inode. You must pass in a -+// dirwalker structure, then use that dirwalker for future operations. -+// Call put_dir when you are done walking the directory. -+static inline directory * -+get_dir(filesystem *fs, uint32 nod, dirwalker *dw) -+{ -+ dw->fs = fs; -+ dw->b = get_blk(fs, nod, &dw->bi); -+ dw->nod = nod; -+ dw->last_d = (directory *) dw->b; -+ -+ memcpy(&dw->d, dw->last_d, sizeof(directory)); -+ if (fs->swapit) -+ swap_dir(&dw->d); -+ return &dw->d; -+} -+ -+// Move to the next directory. -+static inline directory * -+next_dir(dirwalker *dw) -+{ -+ directory *next_d = (directory *)((int8*)dw->last_d + dw->d.d_rec_len); -+ -+ if (dw->fs->swapit) -+ swap_dir(&dw->d); -+ memcpy(dw->last_d, &dw->d, sizeof(directory)); -+ -+ if (((int8 *) next_d) >= ((int8 *) dw->b + BLOCKSIZE)) -+ return NULL; -+ -+ dw->last_d = next_d; -+ memcpy(&dw->d, next_d, sizeof(directory)); -+ if (dw->fs->swapit) -+ swap_dir(&dw->d); -+ return &dw->d; -+} -+ -+// Call then when you are done with the directory walk. -+static inline void -+put_dir(dirwalker *dw) -+{ -+ if (dw->fs->swapit) -+ swap_dir(&dw->d); -+ memcpy(dw->last_d, &dw->d, sizeof(directory)); -+ -+ if (dw->nod == 0) -+ free_workblk(dw->b); -+ else -+ put_blk(dw->bi); -+} -+ -+// Create a new directory block with the given inode as it's destination -+// and append it to the current dirwalker. -+static directory * -+new_dir(filesystem *fs, uint32 dnod, const char *name, int nlen, dirwalker *dw) -+{ -+ directory *d; -+ -+ dw->fs = fs; -+ dw->b = get_workblk(); -+ dw->nod = 0; -+ dw->last_d = (directory *) dw->b; -+ d = &dw->d; -+ d->d_inode = dnod; -+ d->d_rec_len = BLOCKSIZE; -+ d->d_name_len = nlen; -+ strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen); -+ return d; -+} -+ -+// Shrink the current directory entry, make a new one with the free -+// space, and return the new directory entry (making it current). -+static inline directory * -+shrink_dir(dirwalker *dw, uint32 nod, const char *name, int nlen) -+{ -+ int reclen, preclen; -+ directory *d = &dw->d; -+ -+ reclen = d->d_rec_len; -+ d->d_rec_len = sizeof(directory) + rndup(d->d_name_len, 4); -+ preclen = d->d_rec_len; -+ reclen -= preclen; -+ if (dw->fs->swapit) -+ swap_dir(&dw->d); -+ memcpy(dw->last_d, &dw->d, sizeof(directory)); -+ -+ dw->last_d = (directory *) (((int8 *) dw->last_d) + preclen); -+ d->d_rec_len = reclen; -+ d->d_inode = nod; -+ d->d_name_len = nlen; -+ strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen); -+ -+ return d; -+} -+ -+// Return the current block the directory is walking -+static inline uint8 * -+dir_data(dirwalker *dw) -+{ -+ return dw->b; -+} -+ -+// Return the pointer to the name for the current directory -+static inline char * -+dir_name(dirwalker *dw) -+{ -+ return ((char *) dw->last_d) + sizeof(directory); -+} -+ -+// Set the name for the current directory. Note that this doesn't -+// verify that there is space for the directory name, you must do -+// that yourself. -+static void -+dir_set_name(dirwalker *dw, const char *name, int nlen) -+{ -+ dw->d.d_name_len = nlen; -+ strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen); - } - - // allocate a given block/inode in the bitmap -@@ -870,21 +1404,34 @@ - { - uint32 bk=0; - uint32 grp,nbgroups; -+ blk_info *bi; -+ groupdescriptor *gd; -+ gd_info *gi; - - grp = GRP_GROUP_OF_INODE(fs,nod); - nbgroups = GRP_NBGROUPS(fs); -- if(!(bk = allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), 0))) { -- for(grp=0;grpgd[grp].bg_block_bitmap),0); -+ gd = get_gd(fs, grp, &gi); -+ bk = allocate(GRP_GET_GROUP_BBM(fs, gd, &bi), 0); -+ GRP_PUT_GROUP_BBM(bi); -+ put_gd(gi); -+ if (!bk) { -+ for (grp=0; grpgd[grp].bg_free_blocks_count--)) -+ gd = get_gd(fs, grp, &gi); -+ if(!(gd->bg_free_blocks_count--)) - error_msg_and_die("group descr %d. free blocks count == 0 (corrupted fs?)",grp); -- if(!(fs->sb.s_free_blocks_count--)) -+ put_gd(gi); -+ if(!(fs->sb->s_free_blocks_count--)) - error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)"); -- return fs->sb.s_blocks_per_group*grp + bk; -+ return fs->sb->s_first_data_block + fs->sb->s_blocks_per_group*grp + (bk-1); - } - - // free a block -@@ -892,12 +1439,18 @@ - free_blk(filesystem *fs, uint32 bk) - { - uint32 grp; -- -- grp = bk / fs->sb.s_blocks_per_group; -- bk %= fs->sb.s_blocks_per_group; -- deallocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), bk); -- fs->gd[grp].bg_free_blocks_count++; -- fs->sb.s_free_blocks_count++; -+ blk_info *bi; -+ gd_info *gi; -+ groupdescriptor *gd; -+ -+ grp = bk / fs->sb->s_blocks_per_group; -+ bk %= fs->sb->s_blocks_per_group; -+ gd = get_gd(fs, grp, &gi); -+ deallocate(GRP_GET_GROUP_BBM(fs, gd, &bi), bk); -+ GRP_PUT_GROUP_BBM(bi); -+ gd->bg_free_blocks_count++; -+ put_gd(gi); -+ fs->sb->s_free_blocks_count++; - } - - // allocate an inode -@@ -906,6 +1459,9 @@ - { - uint32 nod,best_group=0; - uint32 grp,nbgroups,avefreei; -+ blk_info *bi; -+ gd_info *gi, *bestgi; -+ groupdescriptor *gd, *bestgd; - - nbgroups = GRP_NBGROUPS(fs); - -@@ -914,22 +1470,32 @@ - /* find the one with the most free blocks and allocate node there */ - /* Idea from find_group_dir in fs/ext2/ialloc.c in 2.4.19 kernel */ - /* We do it for all inodes. */ -- avefreei = fs->sb.s_free_inodes_count / nbgroups; -+ avefreei = fs->sb->s_free_inodes_count / nbgroups; -+ bestgd = get_gd(fs, best_group, &bestgi); - for(grp=0; grpgd[grp].bg_free_inodes_count < avefreei || -- fs->gd[grp].bg_free_inodes_count == 0) -+ gd = get_gd(fs, grp, &gi); -+ if (gd->bg_free_inodes_count < avefreei || -+ gd->bg_free_inodes_count == 0) { -+ put_gd(gi); - continue; -- if (!best_group || -- fs->gd[grp].bg_free_blocks_count > fs->gd[best_group].bg_free_blocks_count) -+ } -+ if (!best_group || gd->bg_free_blocks_count > bestgd->bg_free_blocks_count) { -+ put_gd(bestgi); - best_group = grp; -+ bestgd = gd; -+ bestgi = gi; -+ } else -+ put_gd(gi); - } -- if (!(nod = allocate(get_blk(fs,fs->gd[best_group].bg_inode_bitmap),0))) -+ if (!(nod = allocate(GRP_GET_GROUP_IBM(fs, bestgd, &bi), 0))) - error_msg_and_die("couldn't allocate an inode (no free inode)"); -- if(!(fs->gd[best_group].bg_free_inodes_count--)) -+ GRP_PUT_GROUP_IBM(bi); -+ if(!(bestgd->bg_free_inodes_count--)) - error_msg_and_die("group descr. free blocks count == 0 (corrupted fs?)"); -- if(!(fs->sb.s_free_inodes_count--)) -+ put_gd(bestgi); -+ if(!(fs->sb->s_free_inodes_count--)) - error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)"); -- return fs->sb.s_inodes_per_group*best_group+nod; -+ return fs->sb->s_inodes_per_group*best_group+nod; - } - - // print a bitmap allocation -@@ -962,30 +1528,40 @@ - // used after being freed, so once you start - // freeing blocks don't stop until the end of - // the file. moreover, i_blocks isn't updated. --// in fact, don't do that, just use extend_blk - // if hole!=0, create a hole in the file - static uint32 - walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole) - { - uint32 *bkref = 0; -+ uint32 bk = 0; -+ blkmap_info *bmi1 = NULL, *bmi2 = NULL, *bmi3 = NULL; - uint32 *b; - int extend = 0, reduce = 0; -+ inode *inod; -+ nod_info *ni; -+ uint32 *iblk; -+ - if(create && (*create) < 0) - reduce = 1; -- if(bw->bnum >= get_nod(fs, nod)->i_blocks / INOBLK) -+ inod = get_nod(fs, nod, &ni); -+ if(bw->bnum >= inod->i_blocks / INOBLK) - { - if(create && (*create) > 0) - { - (*create)--; - extend = 1; - } -- else -+ else -+ { -+ put_nod(ni); - return WALK_END; -+ } - } -+ iblk = inod->i_block; - // first direct block - if(bw->bpdir == EXT2_INIT_BLOCK) - { -- bkref = &get_nod(fs, nod)->i_block[bw->bpdir = 0]; -+ bkref = &iblk[bw->bpdir = 0]; - if(extend) // allocate first block - *bkref = hole ? 0 : alloc_blk(fs,nod); - if(reduce) // free first block -@@ -994,7 +1570,7 @@ - // direct block - else if(bw->bpdir < EXT2_NDIR_BLOCKS) - { -- bkref = &get_nod(fs, nod)->i_block[++bw->bpdir]; -+ bkref = &iblk[++bw->bpdir]; - if(extend) // allocate block - *bkref = hole ? 0 : alloc_blk(fs,nod); - if(reduce) // free block -@@ -1007,10 +1583,10 @@ - bw->bpdir = EXT2_IND_BLOCK; - bw->bpind = 0; - if(extend) // allocate indirect block -- get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); -+ iblk[bw->bpdir] = alloc_blk(fs,nod); - if(reduce) // free indirect block -- free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ free_blk(fs, iblk[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - bkref = &b[bw->bpind]; - if(extend) // allocate first block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1021,7 +1597,7 @@ - else if((bw->bpdir == EXT2_IND_BLOCK) && (bw->bpind < BLOCKSIZE/4 - 1)) - { - bw->bpind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - bkref = &b[bw->bpind]; - if(extend) // allocate block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1036,15 +1612,15 @@ - bw->bpind = 0; - bw->bpdind = 0; - if(extend) // allocate double indirect block -- get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); -+ iblk[bw->bpdir] = alloc_blk(fs,nod); - if(reduce) // free double indirect block -- free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ free_blk(fs, iblk[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - if(extend) // allocate first indirect block - b[bw->bpind] = alloc_blk(fs,nod); - if(reduce) // free firstindirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - bkref = &b[bw->bpdind]; - if(extend) // allocate first block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1055,8 +1631,8 @@ - else if((bw->bpdir == EXT2_DIND_BLOCK) && (bw->bpdind < BLOCKSIZE/4 - 1)) - { - bw->bpdind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - bkref = &b[bw->bpdind]; - if(extend) // allocate block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1069,12 +1645,12 @@ - bw->bnum++; - bw->bpdind = 0; - bw->bpind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - if(extend) // allocate indirect block - b[bw->bpind] = alloc_blk(fs,nod); - if(reduce) // free indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - bkref = &b[bw->bpdind]; - if(extend) // allocate first block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1094,20 +1670,20 @@ - bw->bpdind = 0; - bw->bptind = 0; - if(extend) // allocate triple indirect block -- get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod); -+ iblk[bw->bpdir] = alloc_blk(fs,nod); - if(reduce) // free triple indirect block -- free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ free_blk(fs, iblk[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - if(extend) // allocate first double indirect block - b[bw->bpind] = alloc_blk(fs,nod); - if(reduce) // free first double indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - if(extend) // allocate first indirect block - b[bw->bpdind] = alloc_blk(fs,nod); - if(reduce) // free first indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpdind]); -+ b = get_blkmap(fs, b[bw->bpdind], &bmi3); - bkref = &b[bw->bptind]; - if(extend) // allocate first data block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1121,9 +1697,9 @@ - (bw->bptind < BLOCKSIZE/4 -1) ) - { - bw->bptind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpdind]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); -+ b = get_blkmap(fs, b[bw->bpdind], &bmi3); - bkref = &b[bw->bptind]; - if(extend) // allocate data block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1140,13 +1716,13 @@ - bw->bnum++; - bw->bptind = 0; - bw->bpdind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - if(extend) // allocate single indirect block - b[bw->bpdind] = alloc_blk(fs,nod); - if(reduce) // free indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpdind]); -+ b = get_blkmap(fs, b[bw->bpdind], &bmi3); - bkref = &b[bw->bptind]; - if(extend) // allocate first data block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1163,17 +1739,17 @@ - bw->bpdind = 0; - bw->bptind = 0; - bw->bpind++; -- b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]); -+ b = get_blkmap(fs, iblk[bw->bpdir], &bmi1); - if(extend) // allocate double indirect block - b[bw->bpind] = alloc_blk(fs,nod); - if(reduce) // free double indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpind]); -+ b = get_blkmap(fs, b[bw->bpind], &bmi2); - if(extend) // allocate single indirect block - b[bw->bpdind] = alloc_blk(fs,nod); - if(reduce) // free indirect block - free_blk(fs, b[bw->bpind]); -- b = (uint32*)get_blk(fs, b[bw->bpdind]); -+ b = get_blkmap(fs, b[bw->bpdind], &bmi3); - bkref = &b[bw->bptind]; - if(extend) // allocate first block - *bkref = hole ? 0 : alloc_blk(fs,nod); -@@ -1184,56 +1760,105 @@ - error_msg_and_die("file too big !"); - /* End change for walking triple indirection */ - -- if(*bkref) -- { -+ bk = *bkref; -+ if (bmi3) -+ put_blkmap(bmi3); -+ if (bmi2) -+ put_blkmap(bmi2); -+ if (bmi1) -+ put_blkmap(bmi1); -+ -+ if(bk) -+ { -+ blk_info *bi; -+ gd_info *gi; -+ uint8 *block; - bw->bnum++; -- if(!reduce && !allocated(GRP_GET_BLOCK_BITMAP(fs,*bkref), GRP_BBM_OFFSET(fs,*bkref))) -- error_msg_and_die("[block %d of inode %d is unallocated !]", *bkref, nod); -+ block = GRP_GET_BLOCK_BITMAP(fs,bk,&bi,&gi); -+ if(!reduce && !allocated(block, GRP_BBM_OFFSET(fs,bk))) -+ error_msg_and_die("[block %d of inode %d is unallocated !]", bk, nod); -+ GRP_PUT_BLOCK_BITMAP(bi, gi); - } - if(extend) -- get_nod(fs, nod)->i_blocks = bw->bnum * INOBLK; -- return *bkref; -+ inod->i_blocks = bw->bnum * INOBLK; -+ put_nod(ni); -+ return bk; - } - --// add blocks to an inode (file/dir/etc...) --static void --extend_blk(filesystem *fs, uint32 nod, block b, int amount) -+typedef struct - { -- int create = amount; -- blockwalker bw, lbw; -- uint32 bk; -- init_bw(&bw); -- if(amount < 0) -- { -- uint32 i; -- for(i = 0; i < get_nod(fs, nod)->i_blocks / INOBLK + amount; i++) -- walk_bw(fs, nod, &bw, 0, 0); -- while(walk_bw(fs, nod, &bw, &create, 0) != WALK_END) -+ blockwalker bw; -+ uint32 nod; -+ nod_info *ni; -+ inode *inod; -+} inode_pos; -+#define INODE_POS_TRUNCATE 0 -+#define INODE_POS_EXTEND 1 -+ -+// Call this to set up an ipos structure for future use with -+// extend_inode_blk to append blocks to the given inode. If -+// op is INODE_POS_TRUNCATE, the inode is truncated to zero size. -+// If op is INODE_POS_EXTEND, the position is moved to the end -+// of the inode's data blocks. -+// Call inode_pos_finish when done with the inode_pos structure. -+static void -+inode_pos_init(filesystem *fs, inode_pos *ipos, uint32 nod, int op, -+ blockwalker *endbw) -+{ -+ blockwalker lbw; -+ -+ init_bw(&ipos->bw); -+ ipos->nod = nod; -+ ipos->inod = get_nod(fs, nod, &ipos->ni); -+ if (op == INODE_POS_TRUNCATE) { -+ int32 create = -1; -+ while(walk_bw(fs, nod, &ipos->bw, &create, 0) != WALK_END) - /*nop*/; -- get_nod(fs, nod)->i_blocks += amount * INOBLK; -+ ipos->inod->i_blocks = 0; - } -- else -+ -+ if (endbw) -+ ipos->bw = *endbw; -+ else { -+ /* Seek to the end */ -+ init_bw(&ipos->bw); -+ lbw = ipos->bw; -+ while(walk_bw(fs, nod, &ipos->bw, 0, 0) != WALK_END) -+ lbw = ipos->bw; -+ ipos->bw = lbw; -+ } -+} -+ -+// Clean up the inode_pos structure. -+static void -+inode_pos_finish(filesystem *fs, inode_pos *ipos) -+{ -+ put_nod(ipos->ni); -+} -+ -+// add blocks to an inode (file/dir/etc...) at the given position. -+// This will only work when appending to the end of an inode. -+static void -+extend_inode_blk(filesystem *fs, inode_pos *ipos, block b, int amount) -+{ -+ uint32 bk; -+ uint32 pos; -+ -+ if (amount < 0) -+ error_msg_and_die("extend_inode_blk: Got negative amount"); -+ -+ for (pos = 0; amount; pos += BLOCKSIZE) - { -- lbw = bw; -- while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END) -- lbw = bw; -- bw = lbw; -- while(create) -- { -- int i, copyb = 0; -- if(!(fs->sb.s_reserved[200] & OP_HOLES)) -- copyb = 1; -- else -- for(i = 0; i < BLOCKSIZE / 4; i++) -- if(((int32*)(b + BLOCKSIZE * (amount - create)))[i]) -- { -- copyb = 1; -- break; -- } -- if((bk = walk_bw(fs, nod, &bw, &create, !copyb)) == WALK_END) -- break; -- if(copyb) -- memcpy(get_blk(fs, bk), b + BLOCKSIZE * (amount - create - 1), BLOCKSIZE); -+ int hole = (fs->holes && is_blk_empty(b + pos)); -+ -+ bk = walk_bw(fs, ipos->nod, &ipos->bw, &amount, hole); -+ if (bk == WALK_END) -+ error_msg_and_die("extend_inode_blk: extend failed"); -+ if (!hole) { -+ blk_info *bi; -+ uint8 *block = get_blk(fs, bk, &bi); -+ memcpy(block, b + pos, BLOCKSIZE); -+ put_blk(bi); - } - } - } -@@ -1242,15 +1867,17 @@ - static void - add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name) - { -- blockwalker bw; -+ blockwalker bw, lbw; - uint32 bk; -- uint8 *b; - directory *d; -+ dirwalker dw; - int reclen, nlen; - inode *node; - inode *pnode; -+ nod_info *dni, *ni; -+ inode_pos ipos; - -- pnode = get_nod(fs, dnod); -+ pnode = get_nod(fs, dnod, &dni); - if((pnode->i_mode & FM_IFMT) != FM_IFDIR) - error_msg_and_die("can't add '%s' to a non-directory", name); - if(!*name) -@@ -1262,52 +1889,52 @@ - if(reclen > BLOCKSIZE) - error_msg_and_die("bad name '%s' (too long)", name); - init_bw(&bw); -+ lbw = bw; - while((bk = walk_bw(fs, dnod, &bw, 0, 0)) != WALK_END) // for all blocks in dir - { -- b = get_blk(fs, bk); - // for all dir entries in block -- for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len)) -+ for(d = get_dir(fs, bk, &dw); d; d = next_dir(&dw)) - { - // if empty dir entry, large enough, use it - if((!d->d_inode) && (d->d_rec_len >= reclen)) - { - d->d_inode = nod; -- node = get_nod(fs, nod); -+ node = get_nod(fs, nod, &ni); -+ dir_set_name(&dw, name, nlen); -+ put_dir(&dw); - node->i_links_count++; -- d->d_name_len = nlen; -- strncpy(d->d_name, name, nlen); -- return; -+ put_nod(ni); -+ goto out; - } - // if entry with enough room (last one?), shrink it & use it - if(d->d_rec_len >= (sizeof(directory) + rndup(d->d_name_len, 4) + reclen)) - { -- reclen = d->d_rec_len; -- d->d_rec_len = sizeof(directory) + rndup(d->d_name_len, 4); -- reclen -= d->d_rec_len; -- d = (directory*) (((int8*)d) + d->d_rec_len); -- d->d_rec_len = reclen; -- d->d_inode = nod; -- node = get_nod(fs, nod); -+ d = shrink_dir(&dw, nod, name, nlen); -+ put_dir(&dw); -+ node = get_nod(fs, nod, &ni); - node->i_links_count++; -- d->d_name_len = nlen; -- strncpy(d->d_name, name, nlen); -- return; -+ put_nod(ni); -+ goto out; - } - } -+ put_dir(&dw); -+ lbw = bw; - } - // we found no free entry in the directory, so we add a block -- if(!(b = get_workblk())) -- error_msg_and_die("get_workblk() failed."); -- d = (directory*)b; -- d->d_inode = nod; -- node = get_nod(fs, nod); -+ node = get_nod(fs, nod, &ni); -+ d = new_dir(fs, nod, name, nlen, &dw); - node->i_links_count++; -- d->d_rec_len = BLOCKSIZE; -- d->d_name_len = nlen; -- strncpy(d->d_name, name, nlen); -- extend_blk(fs, dnod, b, 1); -- get_nod(fs, dnod)->i_size += BLOCKSIZE; -- free_workblk(b); -+ put_nod(ni); -+ next_dir(&dw); // Force the data into the buffer -+ -+ inode_pos_init(fs, &ipos, dnod, INODE_POS_EXTEND, &lbw); -+ extend_inode_blk(fs, &ipos, dir_data(&dw), 1); -+ inode_pos_finish(fs, &ipos); -+ -+ put_dir(&dw); -+ pnode->i_size += BLOCKSIZE; -+out: -+ put_nod(dni); - } - - // find an entry in a directory -@@ -1321,11 +1948,13 @@ - while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END) - { - directory *d; -- uint8 *b; -- b = get_blk(fs, bk); -- for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len)) -- if(d->d_inode && (nlen == d->d_name_len) && !strncmp(d->d_name, name, nlen)) -+ dirwalker dw; -+ for (d = get_dir(fs, bk, &dw); d; d=next_dir(&dw)) -+ if(d->d_inode && (nlen == d->d_name_len) && !strncmp(dir_name(&dw), name, nlen)) { -+ put_dir(&dw); - return d->d_inode; -+ } -+ put_dir(&dw); - } - return 0; - } -@@ -1356,47 +1985,55 @@ - return nod; - } - -+// chmod an inode -+void -+chmod_fs(filesystem *fs, uint32 nod, uint16 mode, uint16 uid, uint16 gid) -+{ -+ inode *node; -+ nod_info *ni; -+ node = get_nod(fs, nod, &ni); -+ node->i_mode = (node->i_mode & ~FM_IMASK) | (mode & FM_IMASK); -+ node->i_uid = uid; -+ node->i_gid = gid; -+ put_nod(ni); -+} -+ - // create a simple inode - static uint32 - mknod_fs(filesystem *fs, uint32 parent_nod, const char *name, uint16 mode, uint16 uid, uint16 gid, uint8 major, uint8 minor, uint32 ctime, uint32 mtime) - { - uint32 nod; - inode *node; -- if((nod = find_dir(fs, parent_nod, name))) -- { -- node = get_nod(fs, nod); -- if((node->i_mode & FM_IFMT) != (mode & FM_IFMT)) -- error_msg_and_die("node '%s' already exists and isn't of the same type", name); -- node->i_mode = mode; -- } -- else -+ nod_info *ni; -+ gd_info *gi; -+ -+ nod = alloc_nod(fs); -+ node = get_nod(fs, nod, &ni); -+ node->i_mode = mode; -+ add2dir(fs, parent_nod, nod, name); -+ switch(mode & FM_IFMT) - { -- nod = alloc_nod(fs); -- node = get_nod(fs, nod); -- node->i_mode = mode; -- add2dir(fs, parent_nod, nod, name); -- switch(mode & FM_IFMT) -- { -- case FM_IFLNK: -- mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO; -- break; -- case FM_IFBLK: -- case FM_IFCHR: -- ((uint8*)get_nod(fs, nod)->i_block)[0] = minor; -- ((uint8*)get_nod(fs, nod)->i_block)[1] = major; -- break; -- case FM_IFDIR: -- add2dir(fs, nod, nod, "."); -- add2dir(fs, nod, parent_nod, ".."); -- fs->gd[GRP_GROUP_OF_INODE(fs,nod)].bg_used_dirs_count++; -- break; -- } -+ case FM_IFLNK: -+ mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO; -+ break; -+ case FM_IFBLK: -+ case FM_IFCHR: -+ ((uint8*)node->i_block)[0] = minor; -+ ((uint8*)node->i_block)[1] = major; -+ break; -+ case FM_IFDIR: -+ add2dir(fs, nod, nod, "."); -+ add2dir(fs, nod, parent_nod, ".."); -+ get_gd(fs,GRP_GROUP_OF_INODE(fs,nod),&gi)->bg_used_dirs_count++; -+ put_gd(gi); -+ break; - } - node->i_uid = uid; - node->i_gid = gid; - node->i_atime = mtime; - node->i_ctime = ctime; - node->i_mtime = mtime; -+ put_nod(ni); - return nod; - } - -@@ -1413,33 +2050,73 @@ - mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint8 *b, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime) - { - uint32 nod = mknod_fs(fs, parent_nod, name, FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO, uid, gid, 0, 0, ctime, mtime); -- extend_blk(fs, nod, 0, - (int)get_nod(fs, nod)->i_blocks / INOBLK); -- get_nod(fs, nod)->i_size = size; -- if(size <= 4 * (EXT2_TIND_BLOCK+1)) -- { -- strncpy((char*)get_nod(fs, nod)->i_block, (char*)b, size); -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ inode_pos ipos; -+ -+ inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL); -+ node->i_size = size; -+ if(size < 4 * (EXT2_TIND_BLOCK+1)) -+ { -+ strncpy((char*)node->i_block, (char*)b, size); -+ ((char*)node->i_block)[size+1] = '\0'; -+ inode_pos_finish(fs, &ipos); -+ put_nod(ni); - return nod; - } -- extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE); -+ extend_inode_blk(fs, &ipos, b, rndup(size, BLOCKSIZE) / BLOCKSIZE); -+ inode_pos_finish(fs, &ipos); -+ put_nod(ni); - return nod; - } - -+static void -+fs_upgrade_rev1_largefile(filesystem *fs) -+{ -+ fs->sb->s_rev_level = 1; -+ fs->sb->s_first_ino = EXT2_GOOD_OLD_FIRST_INO; -+ fs->sb->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE; -+} -+ -+#define COPY_BLOCKS 16 -+#define CB_SIZE (COPY_BLOCKS * BLOCKSIZE) -+ - // make a file from a FILE* - static uint32 --mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size_t size, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime) -+mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime) - { - uint8 * b; - uint32 nod = mknod_fs(fs, parent_nod, name, mode|FM_IFREG, uid, gid, 0, 0, ctime, mtime); -- extend_blk(fs, nod, 0, - (int)get_nod(fs, nod)->i_blocks / INOBLK); -- get_nod(fs, nod)->i_size = size; -- if (size) { -- if(!(b = (uint8*)calloc(rndup(size, BLOCKSIZE), 1))) -- error_msg_and_die("not enough mem to read file '%s'", name); -- if(f) -- fread(b, size, 1, f); // FIXME: ugly. use mmap() ... -- extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE); -- free(b); -- } -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ off_t size = 0; -+ size_t readbytes; -+ inode_pos ipos; -+ int fullsize; -+ -+ b = malloc(CB_SIZE); -+ if (!b) -+ error_msg_and_die("mkfile_fs: out of memory"); -+ inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL); -+ readbytes = fread(b, 1, CB_SIZE, f); -+ while (readbytes) { -+ fullsize = rndup(readbytes, BLOCKSIZE); -+ // Fill to end of block with zeros. -+ memset(b + readbytes, 0, fullsize - readbytes); -+ extend_inode_blk(fs, &ipos, b, fullsize / BLOCKSIZE); -+ size += readbytes; -+ readbytes = fread(b, 1, CB_SIZE, f); -+ } -+ if (size > 0x7fffffff) { -+ if (fs->sb->s_rev_level < 1) -+ fs_upgrade_rev1_largefile(fs); -+ fs->sb->s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_LARGE_FILE; -+ } -+ node->i_dir_acl = size >> 32; -+ node->i_size = size; -+ inode_pos_finish(fs, &ipos); -+ put_nod(ni); -+ free(b); - return nod; - } - -@@ -1591,13 +2268,24 @@ - dname = malloc(len + 1); - for(i = start; i < count; i++) - { -+ uint32 oldnod; - SNPRINTF(dname, len, "%s%lu", name, i); -- mknod_fs(fs, nod, dname, mode, uid, gid, major, minor + (i * increment - start), ctime, mtime); -+ oldnod = find_dir(fs, nod, dname); -+ if(oldnod) -+ chmod_fs(fs, oldnod, mode, uid, gid); -+ else -+ mknod_fs(fs, nod, dname, mode, uid, gid, major, minor + (i * increment - start), ctime, mtime); - } - free(dname); - } - else -- mknod_fs(fs, nod, name, mode, uid, gid, major, minor, ctime, mtime); -+ { -+ uint32 oldnod = find_dir(fs, nod, name); -+ if(oldnod) -+ chmod_fs(fs, oldnod, mode, uid, gid); -+ else -+ mknod_fs(fs, nod, name, mode, uid, gid, major, minor, ctime, mtime); -+ } - } - } - if (line) -@@ -1643,6 +2331,10 @@ - switch(st.st_mode & S_IFMT) - { - case S_IFLNK: -+ if((st.st_mode & S_IFMT) == S_IFREG || st.st_size >= 4 * (EXT2_TIND_BLOCK+1)) -+ stats->nblocks += (st.st_size + BLOCKSIZE - 1) / BLOCKSIZE; -+ stats->ninodes++; -+ break; - case S_IFREG: - if((st.st_mode & S_IFMT) == S_IFREG || st.st_size > 4 * (EXT2_TIND_BLOCK+1)) - stats->nblocks += (st.st_size + BLOCKSIZE - 1) / BLOCKSIZE; -@@ -1657,19 +2349,33 @@ - if(chdir(dent->d_name) < 0) - perror_msg_and_die(dent->d_name); - add2fs_from_dir(fs, this_nod, squash_uids, squash_perms, fs_timestamp, stats); -- chdir(".."); -+ if (chdir("..") == -1) -+ perror_msg_and_die(".."); -+ - break; - default: - break; - } - else - { -+ if((nod = find_dir(fs, this_nod, name))) -+ { -+ error_msg("ignoring duplicate entry %s", name); -+ if(S_ISDIR(st.st_mode)) { -+ if(chdir(dent->d_name) < 0) -+ perror_msg_and_die(name); -+ add2fs_from_dir(fs, nod, squash_uids, squash_perms, fs_timestamp, stats); -+ if (chdir("..") == -1) -+ perror_msg_and_die(".."); -+ } -+ continue; -+ } - save_nod = 0; - /* Check for hardlinks */ - if (!S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode) && st.st_nlink > 1) { -- int32 hdlink = is_hardlink(st.st_ino); -+ int32 hdlink = is_hardlink(fs, st.st_ino); - if (hdlink >= 0) { -- add2dir(fs, this_nod, hdlinks.hdl[hdlink].dst_nod, name); -+ add2dir(fs, this_nod, fs->hdlinks.hdl[hdlink].dst_nod, name); - continue; - } else { - save_nod = 1; -@@ -1697,8 +2403,12 @@ - free(lnk); - break; - case S_IFREG: -- fh = xfopen(dent->d_name, "rb"); -- nod = mkfile_fs(fs, this_nod, name, mode, st.st_size, fh, uid, gid, ctime, mtime); -+ fh = fopen(dent->d_name, "rb"); -+ if (!fh) { -+ error_msg("Unable to open file %s", dent->d_name); -+ break; -+ } -+ nod = mkfile_fs(fs, this_nod, name, mode, fh, uid, gid, ctime, mtime); - fclose(fh); - break; - case S_IFDIR: -@@ -1706,199 +2416,128 @@ - if(chdir(dent->d_name) < 0) - perror_msg_and_die(name); - add2fs_from_dir(fs, nod, squash_uids, squash_perms, fs_timestamp, stats); -- chdir(".."); -+ if (chdir("..") == -1) -+ perror_msg_and_die(".."); - break; - default: - error_msg("ignoring entry %s", name); - } - if (save_nod) { -- if (hdlinks.count == hdlink_cnt) { -- if ((hdlinks.hdl = -- realloc (hdlinks.hdl, (hdlink_cnt + HDLINK_CNT) * -+ if (fs->hdlinks.count == fs->hdlink_cnt) { -+ if ((fs->hdlinks.hdl = -+ realloc (fs->hdlinks.hdl, (fs->hdlink_cnt + HDLINK_CNT) * - sizeof (struct hdlink_s))) == NULL) { - error_msg_and_die("Not enough memory"); - } -- hdlink_cnt += HDLINK_CNT; -+ fs->hdlink_cnt += HDLINK_CNT; - } -- hdlinks.hdl[hdlinks.count].src_inode = st.st_ino; -- hdlinks.hdl[hdlinks.count].dst_nod = nod; -- hdlinks.count++; -+ fs->hdlinks.hdl[fs->hdlinks.count].src_inode = st.st_ino; -+ fs->hdlinks.hdl[fs->hdlinks.count].dst_nod = nod; -+ fs->hdlinks.count++; - } - } - } - closedir(dh); - } - --// endianness swap of x-indirect blocks -+// Copy size blocks from src to dst, putting holes in the output -+// file (if possible) if the input block is all zeros. -+// Copy size blocks from src to dst, putting holes in the output -+// file (if possible) if the input block is all zeros. - static void --swap_goodblocks(filesystem *fs, inode *nod) -+copy_file(filesystem *fs, FILE *dst, FILE *src, size_t size) - { -- uint32 i,j; -- int done=0; -- uint32 *b,*b2; -+ uint8 *b; - -- uint32 nblk = nod->i_blocks / INOBLK; -- if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR)) -- for(i = 0; i <= EXT2_TIND_BLOCK; i++) -- nod->i_block[i] = swab32(nod->i_block[i]); -- if(nblk <= EXT2_IND_BLOCK) -- return; -- swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK])); -- if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4) -- return; -- /* Currently this will fail b'cos the number of blocks as stored -- in i_blocks also includes the indirection blocks (see -- walk_bw). But this function assumes that i_blocks only -- stores the count of data blocks ( Actually according to -- "Understanding the Linux Kernel" (Table 17-3 p502 1st Ed) -- i_blocks IS supposed to store the count of data blocks). so -- with a file of size 268K nblk would be 269.The above check -- will be false even though double indirection hasn't been -- started.This is benign as 0 means block 0 which has been -- zeroed out and therefore points back to itself from any offset -- */ -- // FIXME: I have fixed that, but I have the feeling the rest of -- // ths function needs to be fixed for the same reasons - Xav -- assert(nod->i_block[EXT2_DIND_BLOCK] != 0); -- for(i = 0; i < BLOCKSIZE/4; i++) -- if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) -- swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])); -- swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK])); -- if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4) -- return; -- /* Adding support for triple indirection */ -- b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]); -- for(i=0;i < BLOCKSIZE/4 && !done ; i++) { -- b2 = (uint32*)get_blk(fs,b[i]); -- for(j=0; j ( EXT2_IND_BLOCK + BLOCKSIZE/4 + -- (BLOCKSIZE/4)*(BLOCKSIZE/4) + -- i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + -- j*(BLOCKSIZE/4)) ) -- swap_block(get_blk(fs,b2[j])); -- else { -- done = 1; -- break; -- } -+ b = malloc(BLOCKSIZE); -+ if (!b) -+ error_msg_and_die("copy_file: out of memory"); -+ if (fseek(src, 0, SEEK_SET)) -+ perror_msg_and_die("fseek"); -+ if (ftruncate(fileno(dst), 0)) -+ perror_msg_and_die("copy_file: ftruncate"); -+ while (size > 0) { -+ if (fread(b, BLOCKSIZE, 1, src) != 1) -+ perror_msg_and_die("copy failed on read"); -+ if ((dst != stdout) && fs->holes && is_blk_empty(b)) { -+ /* Empty block, just skip it */ -+ if (fseek(dst, BLOCKSIZE, SEEK_CUR)) -+ perror_msg_and_die("fseek"); -+ } else { -+ if (fwrite(b, BLOCKSIZE, 1, dst) != 1) -+ perror_msg_and_die("copy failed on write"); - } -- swap_block((uint8 *)b2); -+ size--; - } -- swap_block((uint8 *)b); -- return; -+ free(b); - } - --static void --swap_badblocks(filesystem *fs, inode *nod) -+// Allocate a new filesystem structure, allocate internal memory, -+// and initialize the contents. -+static filesystem * -+alloc_fs(int swapit, char *fname, uint32 nbblocks, FILE *srcfile) - { -- uint32 i,j; -- int done=0; -- uint32 *b,*b2; -+ filesystem *fs; -+ struct stat srcstat, dststat; - -- uint32 nblk = nod->i_blocks / INOBLK; -- if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR)) -- for(i = 0; i <= EXT2_TIND_BLOCK; i++) -- nod->i_block[i] = swab32(nod->i_block[i]); -- if(nblk <= EXT2_IND_BLOCK) -- return; -- swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK])); -- if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4) -- return; -- /* See comment in swap_goodblocks */ -- assert(nod->i_block[EXT2_DIND_BLOCK] != 0); -- swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK])); -- for(i = 0; i < BLOCKSIZE/4; i++) -- if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) -- swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i])); -- if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4) -- return; -- /* Adding support for triple indirection */ -- b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]); -- swap_block((uint8 *)b); -- for(i=0;i < BLOCKSIZE/4 && !done ; i++) { -- b2 = (uint32*)get_blk(fs,b[i]); -- swap_block((uint8 *)b2); -- for(j=0; j ( EXT2_IND_BLOCK + BLOCKSIZE/4 + -- (BLOCKSIZE/4)*(BLOCKSIZE/4) + -- i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + -- j*(BLOCKSIZE/4)) ) -- swap_block(get_blk(fs,b2[j])); -- else { -- done = 1; -- break; -- } -- } -- } -- return; --} -+ fs = malloc(sizeof(*fs)); -+ if (!fs) -+ error_msg_and_die("not enough memory for filesystem"); -+ memset(fs, 0, sizeof(*fs)); -+ fs->swapit = swapit; -+ cache_init(&fs->blks, MAX_FREE_CACHE_BLOCKS, blk_elem_val, blk_freed); -+ cache_init(&fs->gds, MAX_FREE_CACHE_GDS, gd_elem_val, gd_freed); -+ cache_init(&fs->blkmaps, MAX_FREE_CACHE_BLOCKMAPS, -+ blkmap_elem_val, blkmap_freed); -+ cache_init(&fs->inodes, MAX_FREE_CACHE_INODES, -+ inode_elem_val, inode_freed); -+ fs->hdlink_cnt = HDLINK_CNT; -+ fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt); -+ if (!fs->hdlinks.hdl) -+ error_msg_and_die("Not enough memory"); -+ fs->hdlinks.count = 0 ; - --// endianness swap of the whole filesystem --static void --swap_goodfs(filesystem *fs) --{ -- uint32 i; -- for(i = 1; i < fs->sb.s_inodes_count; i++) -- { -- inode *nod = get_nod(fs, i); -- if(nod->i_mode & FM_IFDIR) -- { -- blockwalker bw; -- uint32 bk; -- init_bw(&bw); -- while((bk = walk_bw(fs, i, &bw, 0, 0)) != WALK_END) -- { -- directory *d; -- uint8 *b; -- b = get_blk(fs, bk); -- for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + swab16(d->d_rec_len))) -- swap_dir(d); -- } -- } -- swap_goodblocks(fs, nod); -- swap_nod(nod); -- } -- for(i=0;igd[i])); -- swap_sb(&fs->sb); -+ if (strcmp(fname, "-") == 0) -+ fs->f = tmpfile(); -+ else if (srcfile) { -+ if (fstat(fileno(srcfile), &srcstat)) -+ perror_msg_and_die("fstat srcfile"); -+ if (stat(fname, &dststat) == 0 -+ && srcstat.st_ino == dststat.st_ino -+ && srcstat.st_dev == dststat.st_dev) -+ { -+ // source and destination are the same file, don't -+ // truncate or copy, just use the file. -+ fs->f = fopen(fname, "r+b"); -+ } else { -+ fs->f = fopen(fname, "w+b"); -+ if (fs->f) -+ copy_file(fs, fs->f, srcfile, nbblocks); -+ } -+ } else -+ fs->f = fopen(fname, "w+b"); -+ if (!fs->f) -+ perror_msg_and_die("opening %s", fname); -+ return fs; - } - -+/* Make sure the output file is the right size */ - static void --swap_badfs(filesystem *fs) -+set_file_size(filesystem *fs) - { -- uint32 i; -- swap_sb(&fs->sb); -- for(i=0;igd[i])); -- for(i = 1; i < fs->sb.s_inodes_count; i++) -- { -- inode *nod = get_nod(fs, i); -- swap_nod(nod); -- swap_badblocks(fs, nod); -- if(nod->i_mode & FM_IFDIR) -- { -- blockwalker bw; -- uint32 bk; -- init_bw(&bw); -- while((bk = walk_bw(fs, i, &bw, 0, 0)) != WALK_END) -- { -- directory *d; -- uint8 *b; -- b = get_blk(fs, bk); -- for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len)) -- swap_dir(d); -- } -- } -- } -+ if (ftruncate(fileno(fs->f), -+ ((off_t) fs->sb->s_blocks_count) * BLOCKSIZE)) -+ perror_msg_and_die("set_file_size: ftruncate"); - } - - // initialize an empty filesystem - static filesystem * --init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp) -+init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, -+ uint32 fs_timestamp, uint32 creator_os, int swapit, char *fname) - { - uint32 i; - filesystem *fs; -- directory *d; -- uint8 * b; -+ dirwalker dw; - uint32 nod, first_block; - uint32 nbgroups,nbinodes_per_group,overhead_per_group,free_blocks, - free_blocks_per_group,nbblocks_per_group,min_nbgroups; -@@ -1906,6 +2545,11 @@ - uint32 j; - uint8 *bbm,*ibm; - inode *itab0; -+ blk_info *bi; -+ nod_info *ni; -+ groupdescriptor *gd; -+ gd_info *gi; -+ inode_pos ipos; - - if(nbresrvd < 0) - error_msg_and_die("reserved blocks value is invalid. Note: options have changed, see --help or the man page."); -@@ -1919,10 +2563,14 @@ - */ - min_nbgroups = (nbinodes + INODES_PER_GROUP - 1) / INODES_PER_GROUP; - -+ /* On filesystems with 1k block size, the bootloader area uses a full -+ * block. For 2048 and up, the superblock can be fitted into block 0. -+ */ -+ first_block = (BLOCKSIZE == 1024); -+ - /* nbblocks is the total number of blocks in the filesystem. - * a block group can have no more than 8192 blocks. - */ -- first_block = (BLOCKSIZE == 1024); - nbgroups = (nbblocks - first_block + BLOCKS_PER_GROUP - 1) / BLOCKS_PER_GROUP; - if(nbgroups < min_nbgroups) nbgroups = min_nbgroups; - nbblocks_per_group = rndup((nbblocks - first_block + nbgroups - 1)/nbgroups, 8); -@@ -1934,51 +2582,59 @@ - gdsz = rndup(nbgroups*sizeof(groupdescriptor),BLOCKSIZE)/BLOCKSIZE; - itblsz = nbinodes_per_group * sizeof(inode)/BLOCKSIZE; - overhead_per_group = 3 /*sb,bbm,ibm*/ + gdsz + itblsz; -- if((uint32)nbblocks - 1 < overhead_per_group * nbgroups) -- error_msg_and_die("too much overhead, try fewer inodes or more blocks. Note: options have changed, see --help or the man page."); -- free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/; -+ free_blocks = nbblocks - overhead_per_group*nbgroups - first_block; - free_blocks_per_group = nbblocks_per_group - overhead_per_group; -+ if(free_blocks < 0) -+ error_msg_and_die("too much overhead, try fewer inodes or more blocks. Note: options have changed, see --help or the man page."); - -- if(!(fs = (filesystem*)calloc(nbblocks, BLOCKSIZE))) -- error_msg_and_die("not enough memory for filesystem"); -+ fs = alloc_fs(swapit, fname, nbblocks, NULL); -+ fs->sb = calloc(1, SUPERBLOCK_SIZE); -+ if (!fs->sb) -+ error_msg_and_die("error allocating header memory"); - - // create the superblock for an empty filesystem -- fs->sb.s_inodes_count = nbinodes_per_group * nbgroups; -- fs->sb.s_blocks_count = nbblocks; -- fs->sb.s_r_blocks_count = nbresrvd; -- fs->sb.s_free_blocks_count = free_blocks; -- fs->sb.s_free_inodes_count = fs->sb.s_inodes_count - EXT2_FIRST_INO + 1; -- fs->sb.s_first_data_block = first_block; -- fs->sb.s_log_block_size = BLOCKSIZE >> 11; -- fs->sb.s_log_frag_size = BLOCKSIZE >> 11; -- fs->sb.s_blocks_per_group = nbblocks_per_group; -- fs->sb.s_frags_per_group = nbblocks_per_group; -- fs->sb.s_inodes_per_group = nbinodes_per_group; -- fs->sb.s_wtime = fs_timestamp; -- fs->sb.s_magic = EXT2_MAGIC_NUMBER; -- fs->sb.s_lastcheck = fs_timestamp; -+ fs->sb->s_inodes_count = nbinodes_per_group * nbgroups; -+ fs->sb->s_blocks_count = nbblocks; -+ fs->sb->s_r_blocks_count = nbresrvd; -+ fs->sb->s_free_blocks_count = free_blocks; -+ fs->sb->s_free_inodes_count = fs->sb->s_inodes_count - EXT2_FIRST_INO + 1; -+ fs->sb->s_first_data_block = first_block; -+ fs->sb->s_log_block_size = BLOCKSIZE >> 11; -+ fs->sb->s_log_frag_size = BLOCKSIZE >> 11; -+ fs->sb->s_blocks_per_group = nbblocks_per_group; -+ fs->sb->s_frags_per_group = nbblocks_per_group; -+ fs->sb->s_inodes_per_group = nbinodes_per_group; -+ fs->sb->s_wtime = fs_timestamp; -+ fs->sb->s_magic = EXT2_MAGIC_NUMBER; -+ fs->sb->s_lastcheck = fs_timestamp; -+ fs->sb->s_creator_os = creator_os; -+ -+ set_file_size(fs); - - // set up groupdescriptors -- for(i=0, bbmpos=gdsz+2, ibmpos=bbmpos+1, itblpos=ibmpos+1; -+ for(i=0, bbmpos=first_block+1+gdsz, ibmpos=bbmpos+1, itblpos=ibmpos+1; - i free_blocks_per_group) { -- fs->gd[i].bg_free_blocks_count = free_blocks_per_group; -+ gd->bg_free_blocks_count = free_blocks_per_group; - free_blocks -= free_blocks_per_group; - } else { -- fs->gd[i].bg_free_blocks_count = free_blocks; -+ gd->bg_free_blocks_count = free_blocks; - free_blocks = 0; // this is the last block group - } - if(i) -- fs->gd[i].bg_free_inodes_count = nbinodes_per_group; -+ gd->bg_free_inodes_count = nbinodes_per_group; - else -- fs->gd[i].bg_free_inodes_count = nbinodes_per_group - -+ gd->bg_free_inodes_count = nbinodes_per_group - - EXT2_FIRST_INO + 2; -- fs->gd[i].bg_used_dirs_count = 0; -- fs->gd[i].bg_block_bitmap = bbmpos; -- fs->gd[i].bg_inode_bitmap = ibmpos; -- fs->gd[i].bg_inode_table = itblpos; -+ gd->bg_used_dirs_count = 0; -+ gd->bg_block_bitmap = bbmpos; -+ gd->bg_inode_bitmap = ibmpos; -+ gd->bg_inode_table = itblpos; -+ put_gd(gi); - } - - /* Mark non-filesystem blocks and inodes as allocated */ -@@ -1984,110 +2640,143 @@ - /* Mark non-filesystem blocks and inodes as allocated */ - /* Mark system blocks and inodes as allocated */ - for(i = 0; igd[i].bg_block_bitmap); -+ gd = get_gd(fs, i, &gi); -+ bbm = GRP_GET_GROUP_BBM(fs, gd, &bi); - //non-filesystem blocks -- for(j = fs->gd[i].bg_free_blocks_count -+ for(j = gd->bg_free_blocks_count - + overhead_per_group + 1; j <= BLOCKSIZE * 8; j++) - allocate(bbm, j); - //system blocks - for(j = 1; j <= overhead_per_group; j++) - allocate(bbm, j); -- -+ GRP_PUT_GROUP_BBM(bi); -+ - /* Inode bitmap */ -- ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap); -+ ibm = GRP_GET_GROUP_IBM(fs, gd, &bi); - //non-filesystem inodes -- for(j = fs->sb.s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++) -+ for(j = fs->sb->s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++) - allocate(ibm, j); - - //system inodes - if(i == 0) - for(j = 1; j < EXT2_FIRST_INO; j++) - allocate(ibm, j); -+ GRP_PUT_GROUP_IBM(bi); -+ put_gd(gi); - } - - // make root inode and directory - /* We have groups now. Add the root filesystem in group 0 */ - /* Also increment the directory count for group 0 */ -- fs->gd[0].bg_free_inodes_count--; -- fs->gd[0].bg_used_dirs_count = 1; -- itab0 = (inode *)get_blk(fs,fs->gd[0].bg_inode_table); -- itab0[EXT2_ROOT_INO-1].i_mode = FM_IFDIR | FM_IRWXU | FM_IRGRP | FM_IROTH | FM_IXGRP | FM_IXOTH; -- itab0[EXT2_ROOT_INO-1].i_ctime = fs_timestamp; -- itab0[EXT2_ROOT_INO-1].i_mtime = fs_timestamp; -- itab0[EXT2_ROOT_INO-1].i_atime = fs_timestamp; -- itab0[EXT2_ROOT_INO-1].i_size = BLOCKSIZE; -- itab0[EXT2_ROOT_INO-1].i_links_count = 2; -- -- if(!(b = get_workblk())) -- error_msg_and_die("get_workblk() failed."); -- d = (directory*)b; -- d->d_inode = EXT2_ROOT_INO; -- d->d_rec_len = sizeof(directory)+4; -- d->d_name_len = 1; -- strcpy(d->d_name, "."); -- d = (directory*)(b + d->d_rec_len); -- d->d_inode = EXT2_ROOT_INO; -- d->d_rec_len = BLOCKSIZE - (sizeof(directory)+4); -- d->d_name_len = 2; -- strcpy(d->d_name, ".."); -- extend_blk(fs, EXT2_ROOT_INO, b, 1); -+ gd = get_gd(fs, 0, &gi); -+ gd->bg_free_inodes_count--; -+ gd->bg_used_dirs_count = 1; -+ put_gd(gi); -+ itab0 = get_nod(fs, EXT2_ROOT_INO, &ni); -+ itab0->i_mode = FM_IFDIR | FM_IRWXU | FM_IRGRP | FM_IROTH | FM_IXGRP | FM_IXOTH; -+ itab0->i_ctime = fs_timestamp; -+ itab0->i_mtime = fs_timestamp; -+ itab0->i_atime = fs_timestamp; -+ itab0->i_size = BLOCKSIZE; -+ itab0->i_links_count = 2; -+ put_nod(ni); -+ -+ new_dir(fs, EXT2_ROOT_INO, ".", 1, &dw); -+ shrink_dir(&dw, EXT2_ROOT_INO, "..", 2); -+ next_dir(&dw); // Force the data into the buffer -+ inode_pos_init(fs, &ipos, EXT2_ROOT_INO, INODE_POS_EXTEND, NULL); -+ extend_inode_blk(fs, &ipos, dir_data(&dw), 1); -+ inode_pos_finish(fs, &ipos); -+ put_dir(&dw); - -- // make lost+found directory and reserve blocks -- if(fs->sb.s_r_blocks_count) -+ // make lost+found directory -+ if(fs->sb->s_r_blocks_count) - { -- nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU, 0, 0, fs_timestamp, fs_timestamp); -+ inode *node; -+ uint8 *b; -+ -+ nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU, -+ 0, 0, fs_timestamp, fs_timestamp); -+ b = get_workblk(); - memset(b, 0, BLOCKSIZE); - ((directory*)b)->d_rec_len = BLOCKSIZE; -- /* We run into problems with e2fsck if directory lost+found grows -- * bigger than this. Need to find out why this happens - sundar -- */ -- if (fs->sb.s_r_blocks_count > fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS ) -- fs->sb.s_r_blocks_count = fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS; -- for(i = 1; i < fs->sb.s_r_blocks_count; i++) -- extend_blk(fs, nod, b, 1); -- get_nod(fs, nod)->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE; -+ inode_pos_init(fs, &ipos, nod, INODE_POS_EXTEND, NULL); -+ // It is always 16 blocks to start out with -+ for(i = 1; i < 16; i++) -+ extend_inode_blk(fs, &ipos, b, 1); -+ inode_pos_finish(fs, &ipos); -+ free_workblk(b); -+ node = get_nod(fs, nod, &ni); -+ node->i_size = 16 * BLOCKSIZE; -+ put_nod(ni); - } -- free_workblk(b); - - // administrative info -- fs->sb.s_state = 1; -- fs->sb.s_max_mnt_count = 20; -+ fs->sb->s_state = 1; -+ fs->sb->s_max_mnt_count = 20; - - // options for me -- if(holes) -- fs->sb.s_reserved[200] |= OP_HOLES; -+ fs->holes = holes; - - return fs; - } - - // loads a filesystem from disk - static filesystem * --load_fs(FILE * fh, int swapit) -+load_fs(FILE *fh, int swapit, char *fname) - { -- size_t fssize; -+ off_t fssize; - filesystem *fs; -- if((fseek(fh, 0, SEEK_END) < 0) || ((ssize_t)(fssize = ftell(fh)) == -1)) -+ -+ if((fseek(fh, 0, SEEK_END) < 0) || ((fssize = ftello(fh)) == -1)) - perror_msg_and_die("input filesystem image"); - rewind(fh); -- fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE; -+ if ((fssize % BLOCKSIZE) != 0) -+ error_msg_and_die("Input file not a multiple of block size"); -+ fssize /= BLOCKSIZE; - if(fssize < 16) // totally arbitrary - error_msg_and_die("too small filesystem"); -- if(!(fs = (filesystem*)calloc(fssize, BLOCKSIZE))) -- error_msg_and_die("not enough memory for filesystem"); -- if(fread(fs, BLOCKSIZE, fssize, fh) != fssize) -- perror_msg_and_die("input filesystem image"); -+ fs = alloc_fs(swapit, fname, fssize, fh); -+ -+ /* Read and check the superblock, then read the superblock -+ * and all the group descriptors */ -+ fs->sb = malloc(SUPERBLOCK_SIZE); -+ if (!fs->sb) -+ error_msg_and_die("error allocating header memory"); -+ if (fseek(fs->f, SUPERBLOCK_OFFSET, SEEK_SET)) -+ perror_msg_and_die("fseek"); -+ if (fread(fs->sb, SUPERBLOCK_SIZE, 1, fs->f) != 1) -+ perror_msg_and_die("fread filesystem image superblock"); - if(swapit) -- swap_badfs(fs); -- if(fs->sb.s_rev_level || (fs->sb.s_magic != EXT2_MAGIC_NUMBER)) -+ swap_sb(fs->sb); -+ -+ if((fs->sb->s_rev_level > 1) || (fs->sb->s_magic != EXT2_MAGIC_NUMBER)) - error_msg_and_die("not a suitable ext2 filesystem"); -+ if (fs->sb->s_rev_level > 0) { -+ if (fs->sb->s_first_ino != EXT2_GOOD_OLD_FIRST_INO) -+ error_msg_and_die("First inode incompatible"); -+ if (fs->sb->s_inode_size != EXT2_GOOD_OLD_INODE_SIZE) -+ error_msg_and_die("inode size incompatible"); -+ if (fs->sb->s_feature_compat) -+ error_msg_and_die("Unsupported compat features"); -+ if (fs->sb->s_feature_incompat) -+ error_msg_and_die("Unsupported incompat features"); -+ if (fs->sb->s_feature_ro_compat -+ & ~EXT2_FEATURE_RO_COMPAT_LARGE_FILE) -+ error_msg_and_die("Unsupported ro compat features"); -+ } -+ -+ set_file_size(fs); - return fs; - } - - static void - free_fs(filesystem *fs) - { -+ free(fs->hdlinks.hdl); -+ fclose(fs->f); -+ free(fs->sb); - free(fs); - } - -@@ -2123,16 +2812,23 @@ - { - blockwalker bw; - uint32 bk; -- int32 fsize = get_nod(fs, nod)->i_size; -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ int32 fsize = node->i_size; -+ blk_info *bi; -+ - init_bw(&bw); - while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END) - { - if(fsize <= 0) - error_msg_and_die("wrong size while saving inode %d", nod); -- if(fwrite(get_blk(fs, bk), (fsize > BLOCKSIZE) ? BLOCKSIZE : fsize, 1, f) != 1) -+ if(fwrite(get_blk(fs, bk, &bi), -+ (fsize > BLOCKSIZE) ? BLOCKSIZE : fsize, 1, f) != 1) - error_msg_and_die("error while saving inode %d", nod); -+ put_blk(bi); - fsize -= BLOCKSIZE; - } -+ put_nod(ni); - } - - -@@ -2141,8 +2837,11 @@ - print_dev(filesystem *fs, uint32 nod) - { - int minor, major; -- minor = ((uint8*)get_nod(fs, nod)->i_block)[0]; -- major = ((uint8*)get_nod(fs, nod)->i_block)[1]; -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ minor = ((uint8*)node->i_block)[0]; -+ major = ((uint8*)node->i_block)[1]; -+ put_nod(ni); - printf("major: %d, minor: %d\n", major, minor); - } - -@@ -2157,17 +2856,15 @@ - while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END) - { - directory *d; -- uint8 *b; -- b = get_blk(fs, bk); -- for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len)) -+ dirwalker dw; -+ for (d = get_dir(fs, bk, &dw); d; d = next_dir(&dw)) - if(d->d_inode) - { -- int i; - printf("entry '"); -- for(i = 0; i < d->d_name_len; i++) -- putchar(d->d_name[i]); -+ fwrite(dir_name(&dw), 1, d->d_name_len, stdout); - printf("' (inode %d): rec_len: %d (name_len: %d)\n", d->d_inode, d->d_rec_len, d->d_name_len); - } -+ put_dir(&dw); - } - } - -@@ -2175,14 +2872,18 @@ - static void - print_link(filesystem *fs, uint32 nod) - { -- if(!get_nod(fs, nod)->i_blocks) -- printf("links to '%s'\n", (char*)get_nod(fs, nod)->i_block); -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ -+ if(!node->i_blocks) -+ printf("links to '%s'\n", (char*)node->i_block); - else - { - printf("links to '"); - write_blocks(fs, nod, stdout); - printf("'\n"); - } -+ put_nod(ni); - } - - // make a ls-like printout of permissions -@@ -2251,8 +2952,13 @@ - { - char *s; - char perms[11]; -- if(!get_nod(fs, nod)->i_mode) -- return; -+ nod_info *ni; -+ inode *node = get_nod(fs, nod, &ni); -+ blk_info *bi; -+ gd_info *gi; -+ -+ if(!node->i_mode) -+ goto out; - switch(nod) - { - case EXT2_BAD_INO: -@@ -2274,15 +2980,18 @@ - default: - s = (nod >= EXT2_FIRST_INO) ? "normal" : "unknown reserved"; - } -- printf("inode %d (%s, %d links): ", nod, s, get_nod(fs, nod)->i_links_count); -- if(!allocated(GRP_GET_INODE_BITMAP(fs,nod), GRP_IBM_OFFSET(fs,nod))) -+ printf("inode %d (%s, %d links): ", nod, s, node->i_links_count); -+ if(!allocated(GRP_GET_INODE_BITMAP(fs,nod,&bi,&gi), GRP_IBM_OFFSET(fs,nod))) - { -+ GRP_PUT_INODE_BITMAP(bi,gi); - printf("unallocated\n"); -- return; -+ goto out; - } -- make_perms(get_nod(fs, nod)->i_mode, perms); -- printf("%s, size: %d byte%s (%d block%s)\n", perms, plural(get_nod(fs, nod)->i_size), plural(get_nod(fs, nod)->i_blocks / INOBLK)); -- switch(get_nod(fs, nod)->i_mode & FM_IFMT) -+ GRP_PUT_INODE_BITMAP(bi,gi); -+ make_perms(node->i_mode, perms); -+ printf("%s, size: %d byte%s (%d block%s)\n", perms, -+ plural(node->i_size), plural(node->i_blocks / INOBLK)); -+ switch(node->i_mode & FM_IFMT) - { - case FM_IFSOCK: - list_blocks(fs, nod); -@@ -2310,6 +3019,8 @@ - list_blocks(fs, nod); - } - printf("Done with inode %d\n",nod); -+out: -+ put_nod(ni); - } - - // describes various fields in a filesystem -@@ -2317,49 +3028,65 @@ - print_fs(filesystem *fs) - { - uint32 i; -+ blk_info *bi; -+ groupdescriptor *gd; -+ gd_info *gi; - uint8 *ibm; - - printf("%d blocks (%d free, %d reserved), first data block: %d\n", -- fs->sb.s_blocks_count, fs->sb.s_free_blocks_count, -- fs->sb.s_r_blocks_count, fs->sb.s_first_data_block); -- printf("%d inodes (%d free)\n", fs->sb.s_inodes_count, -- fs->sb.s_free_inodes_count); -+ fs->sb->s_blocks_count, fs->sb->s_free_blocks_count, -+ fs->sb->s_r_blocks_count, fs->sb->s_first_data_block); -+ printf("%d inodes (%d free)\n", fs->sb->s_inodes_count, -+ fs->sb->s_free_inodes_count); - printf("block size = %d, frag size = %d\n", -- fs->sb.s_log_block_size ? (fs->sb.s_log_block_size << 11) : 1024, -- fs->sb.s_log_frag_size ? (fs->sb.s_log_frag_size << 11) : 1024); -+ fs->sb->s_log_block_size ? (fs->sb->s_log_block_size << 11) : 1024, -+ fs->sb->s_log_frag_size ? (fs->sb->s_log_frag_size << 11) : 1024); - printf("number of groups: %d\n",GRP_NBGROUPS(fs)); - printf("%d blocks per group,%d frags per group,%d inodes per group\n", -- fs->sb.s_blocks_per_group, fs->sb.s_frags_per_group, -- fs->sb.s_inodes_per_group); -+ fs->sb->s_blocks_per_group, fs->sb->s_frags_per_group, -+ fs->sb->s_inodes_per_group); - printf("Size of inode table: %d blocks\n", -- (int)(fs->sb.s_inodes_per_group * sizeof(inode) / BLOCKSIZE)); -+ (int)(fs->sb->s_inodes_per_group * sizeof(inode) / BLOCKSIZE)); - for (i = 0; i < GRP_NBGROUPS(fs); i++) { - printf("Group No: %d\n", i+1); -+ gd = get_gd(fs, i, &gi); - printf("block bitmap: block %d,inode bitmap: block %d, inode table: block %d\n", -- fs->gd[i].bg_block_bitmap, fs->gd[i].bg_inode_bitmap, -- fs->gd[i].bg_inode_table); -+ gd->bg_block_bitmap, -+ gd->bg_inode_bitmap, -+ gd->bg_inode_table); - printf("block bitmap allocation:\n"); -- print_bm(GRP_GET_GROUP_BBM(fs, i),fs->sb.s_blocks_per_group); -+ print_bm(GRP_GET_GROUP_BBM(fs, gd, &bi),fs->sb->s_blocks_per_group); -+ GRP_PUT_GROUP_BBM(bi); - printf("inode bitmap allocation:\n"); -- ibm = GRP_GET_GROUP_IBM(fs, i); -- print_bm(ibm, fs->sb.s_inodes_per_group); -- for (i = 1; i <= fs->sb.s_inodes_per_group; i++) -+ ibm = GRP_GET_GROUP_IBM(fs, gd, &bi); -+ print_bm(ibm, fs->sb->s_inodes_per_group); -+ for (i = 1; i <= fs->sb->s_inodes_per_group; i++) - if (allocated(ibm, i)) - print_inode(fs, i); -+ GRP_PUT_GROUP_IBM(bi); -+ put_gd(gi); - } - } - - static void --dump_fs(filesystem *fs, FILE * fh, int swapit) -+finish_fs(filesystem *fs) - { -- uint32 nbblocks = fs->sb.s_blocks_count; -- fs->sb.s_reserved[200] = 0; -- if(swapit) -- swap_goodfs(fs); -- if(fwrite(fs, BLOCKSIZE, nbblocks, fh) < nbblocks) -- perror_msg_and_die("output filesystem image"); -- if(swapit) -- swap_badfs(fs); -+ if (cache_flush(&fs->inodes)) -+ error_msg_and_die("entry mismatch on inode cache flush"); -+ if (cache_flush(&fs->blkmaps)) -+ error_msg_and_die("entry mismatch on blockmap cache flush"); -+ if (cache_flush(&fs->gds)) -+ error_msg_and_die("entry mismatch on gd cache flush"); -+ if (cache_flush(&fs->blks)) -+ error_msg_and_die("entry mismatch on block cache flush"); -+ if(fs->swapit) -+ swap_sb(fs->sb); -+ if (fseek(fs->f, SUPERBLOCK_OFFSET, SEEK_SET)) -+ perror_msg_and_die("fseek"); -+ if(fwrite(fs->sb, SUPERBLOCK_SIZE, 1, fs->f) != 1) -+ perror_msg_and_die("output filesystem superblock"); -+ if(fs->swapit) -+ swap_sb(fs->sb); - } - - static void -@@ -2419,10 +3146,12 @@ - " -x, --starting-image \n" - " -d, --root \n" - " -D, --devtable \n" -+ " -B, --block-size \n" - " -b, --size-in-blocks \n" - " -i, --bytes-per-inode \n" - " -N, --number-of-inodes \n" - " -m, --reserved-percentage \n" -+ " -o, --creator-os 'linux' (default), 'hurd', 'freebsd' or number.\n" - " -g, --block-map Generate a block map file for this path.\n" - " -e, --fill-value Fill unallocated blocks with value.\n" - " -z, --allow-holes Allow files with holes.\n" -@@ -2444,15 +3173,34 @@ - extern char* optarg; - extern int optind, opterr, optopt; - -+// parse the value for -o -+int -+lookup_creator_os(const char *name) -+{ -+ if (isdigit (*name)) -+ return atoi(name); -+ else if (strcasecmp(name, "linux") == 0) -+ return EXT2_OS_LINUX; -+ else if (strcasecmp(name, "GNU") == 0 || strcasecmp(name, "hurd") == 0) -+ return EXT2_OS_HURD; -+ else if (strcasecmp(name, "freebsd") == 0) -+ return EXT2_OS_FREEBSD; -+ else if (strcasecmp(name, "lites") == 0) -+ return EXT2_OS_LITES; -+ else -+ return EXT2_OS_LINUX; -+} -+ - int - main(int argc, char **argv) - { -- int nbblocks = -1; -+ long long nbblocks = -1; - int nbinodes = -1; - int nbresrvd = -1; - float bytes_per_inode = -1; - float reserved_frac = -1; - int fs_timestamp = -1; -+ int creator_os = CREATOR_OS; - char * fsout = "-"; - char * fsin = 0; - char * dopt[MAX_DOPT]; -@@ -2466,6 +3214,7 @@ - int squash_perms = 0; - uint16 endian = 1; - int bigendian = !*(char*)&endian; -+ char *volumelabel = NULL; - filesystem *fs; - int i; - int c; -@@ -2476,13 +3225,16 @@ - { "starting-image", required_argument, NULL, 'x' }, - { "root", required_argument, NULL, 'd' }, - { "devtable", required_argument, NULL, 'D' }, -+ { "block-size", required_argument, NULL, 'B' }, - { "size-in-blocks", required_argument, NULL, 'b' }, - { "bytes-per-inode", required_argument, NULL, 'i' }, - { "number-of-inodes", required_argument, NULL, 'N' }, -+ { "volume-label", required_argument, NULL, 'L' }, - { "reserved-percentage", required_argument, NULL, 'm' }, -+ { "creator-os", required_argument, NULL, 'o' }, - { "block-map", required_argument, NULL, 'g' }, - { "fill-value", required_argument, NULL, 'e' }, -- { "allow-holes", no_argument, NULL, 'z' }, -+ { "allow-holes", no_argument, NULL, 'z' }, - { "faketime", no_argument, NULL, 'f' }, - { "squash", no_argument, NULL, 'q' }, - { "squash-uids", no_argument, NULL, 'U' }, -@@ -2495,11 +3247,11 @@ - - app_name = argv[0]; - -- while((c = getopt_long(argc, argv, "x:d:D:b:i:N:m:g:e:zfqUPhVv", longopts, NULL)) != EOF) { -+ while((c = getopt_long(argc, argv, "x:d:D:B:b:i:N:L:m:o:g:e:zfqUPhVv", longopts, NULL)) != EOF) { - #else - app_name = argv[0]; - -- while((c = getopt(argc, argv, "x:d:D:b:i:N:m:g:e:zfqUPhVv")) != EOF) { -+ while((c = getopt(argc, argv, "x:d:D:B:b:i:N:L:m:o:g:e:zfqUPhVv")) != EOF) { - #endif /* HAVE_GETOPT_LONG */ - switch(c) - { -@@ -2510,6 +3262,9 @@ - case 'D': - dopt[didx++] = optarg; - break; -+ case 'B': -+ blocksize = SI_atof(optarg); -+ break; - case 'b': - nbblocks = SI_atof(optarg); - break; -@@ -2519,9 +3274,15 @@ - case 'N': - nbinodes = SI_atof(optarg); - break; -+ case 'L': -+ volumelabel = optarg; -+ break; - case 'm': - reserved_frac = SI_atof(optarg) / 100; - break; -+ case 'o': -+ creator_os = lookup_creator_os(optarg); -+ break; - case 'g': - gopt[gidx++] = optarg; - break; -@@ -2565,21 +3326,21 @@ - error_msg_and_die("Not enough arguments. Try --help or else see the man page."); - fsout = argv[optind]; - -- hdlinks.hdl = (struct hdlink_s *)malloc(hdlink_cnt * sizeof(struct hdlink_s)); -- if (!hdlinks.hdl) -- error_msg_and_die("Not enough memory"); -- hdlinks.count = 0 ; -+ if(blocksize != 1024 && blocksize != 2048 && blocksize != 4096) -+ error_msg_and_die("Valid block sizes: 1024, 2048 or 4096."); -+ if(creator_os < 0) -+ error_msg_and_die("Creator OS unknown."); - - if(fsin) - { - if(strcmp(fsin, "-")) - { - FILE * fh = xfopen(fsin, "rb"); -- fs = load_fs(fh, bigendian); -+ fs = load_fs(fh, bigendian, fsout); - fclose(fh); - } - else -- fs = load_fs(stdin, bigendian); -+ fs = load_fs(stdin, bigendian, fsout); - } - else - { -@@ -2609,16 +3370,29 @@ - } - if(fs_timestamp == -1) - fs_timestamp = time(NULL); -- fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp); -+ fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, -+ fs_timestamp, creator_os, bigendian, fsout); - } -+ if (volumelabel != NULL) -+ strncpy((char *)fs->sb->s_volume_name, volumelabel, -+ sizeof(fs->sb->s_volume_name)); - - populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL); - - if(emptyval) { - uint32 b; -- for(b = 1; b < fs->sb.s_blocks_count; b++) -- if(!allocated(GRP_GET_BLOCK_BITMAP(fs,b),GRP_BBM_OFFSET(fs,b))) -- memset(get_blk(fs, b), emptyval, BLOCKSIZE); -+ for(b = 1; b < fs->sb->s_blocks_count; b++) { -+ blk_info *bi; -+ gd_info *gi; -+ if(!allocated(GRP_GET_BLOCK_BITMAP(fs,b,&bi,&gi), -+ GRP_BBM_OFFSET(fs,b))) { -+ blk_info *bi2; -+ memset(get_blk(fs, b, &bi2), emptyval, -+ BLOCKSIZE); -+ put_blk(bi2); -+ } -+ GRP_PUT_BLOCK_BITMAP(bi,gi); -+ } - } - if(verbose) - print_fs(fs); -@@ -2628,24 +3402,22 @@ - char fname[MAX_FILENAME]; - char *p; - FILE *fh; -+ nod_info *ni; - if(!(nod = find_path(fs, EXT2_ROOT_INO, gopt[i]))) - error_msg_and_die("path %s not found in filesystem", gopt[i]); - while((p = strchr(gopt[i], '/'))) - *p = '_'; - SNPRINTF(fname, MAX_FILENAME-1, "%s.blk", gopt[i]); - fh = xfopen(fname, "wb"); -- fprintf(fh, "%d:", get_nod(fs, nod)->i_size); -+ fprintf(fh, "%d:", get_nod(fs, nod, &ni)->i_size); -+ put_nod(ni); - flist_blocks(fs, nod, fh); - fclose(fh); - } -- if(strcmp(fsout, "-")) -- { -- FILE * fh = xfopen(fsout, "wb"); -- dump_fs(fs, fh, bigendian); -- fclose(fh); -- } -- else -- dump_fs(fs, stdout, bigendian); -+ finish_fs(fs); -+ if(strcmp(fsout, "-") == 0) -+ copy_file(fs, stdout, fs->f, fs->sb->s_blocks_count); -+ - free_fs(fs); - return 0; - } -Index: genext2fs-1.4.1/cache.h -=================================================================== ---- /dev/null -+++ genext2fs-1.4.1/cache.h -@@ -0,0 +1,128 @@ -+#ifndef __CACHE_H__ -+#define __CACHE_H__ -+ -+#include "list.h" -+ -+#define CACHE_LISTS 256 -+ -+typedef struct -+{ -+ list_elem link; -+ list_elem lru_link; -+} cache_link; -+ -+typedef struct -+{ -+ /* LRU list holds unused items */ -+ unsigned int lru_entries; -+ list_elem lru_list; -+ unsigned int max_free_entries; -+ -+ unsigned int entries; -+ list_elem lists[CACHE_LISTS]; -+ unsigned int (*elem_val)(cache_link *elem); -+ void (*freed)(cache_link *elem); -+} listcache; -+ -+static inline void -+cache_add(listcache *c, cache_link *elem) -+{ -+ unsigned int hash = c->elem_val(elem) % CACHE_LISTS; -+ int delcount = c->lru_entries - c->max_free_entries; -+ -+ if (delcount > 0) { -+ /* Delete some unused items. */ -+ list_elem *lru, *next; -+ cache_link *l; -+ list_for_each_elem_safe(&c->lru_list, lru, next) { -+ l = container_of(lru, cache_link, lru_link); -+ list_del(lru); -+ list_del(&l->link); -+ c->entries--; -+ c->lru_entries--; -+ c->freed(l); -+ delcount--; -+ if (delcount <= 0) -+ break; -+ } -+ } -+ -+ c->entries++; -+ list_item_init(&elem->lru_link); /* Mark it not in the LRU list */ -+ list_add_after(&c->lists[hash], &elem->link); -+} -+ -+static inline void -+cache_item_set_unused(listcache *c, cache_link *elem) -+{ -+ list_add_before(&c->lru_list, &elem->lru_link); -+ c->lru_entries++; -+} -+ -+static inline cache_link * -+cache_find(listcache *c, unsigned int val) -+{ -+ unsigned int hash = val % CACHE_LISTS; -+ list_elem *elem; -+ -+ list_for_each_elem(&c->lists[hash], elem) { -+ cache_link *l = container_of(elem, cache_link, link); -+ if (c->elem_val(l) == val) { -+ if (!list_empty(&l->lru_link)) { -+ /* It's in the unused list, remove it. */ -+ list_del(&l->lru_link); -+ list_item_init(&l->lru_link); -+ c->lru_entries--; -+ } -+ return l; -+ } -+ } -+ return NULL; -+} -+ -+static inline int -+cache_flush(listcache *c) -+{ -+ list_elem *elem, *next; -+ cache_link *l; -+ int i; -+ -+ list_for_each_elem_safe(&c->lru_list, elem, next) { -+ l = container_of(elem, cache_link, lru_link); -+ list_del(elem); -+ list_del(&l->link); -+ c->entries--; -+ c->lru_entries--; -+ c->freed(l); -+ } -+ -+ for (i = 0; i < CACHE_LISTS; i++) { -+ list_for_each_elem_safe(&c->lists[i], elem, next) { -+ l = container_of(elem, cache_link, link); -+ list_del(&l->link); -+ c->entries--; -+ c->freed(l); -+ } -+ } -+ -+ return c->entries || c->lru_entries; -+} -+ -+static inline void -+cache_init(listcache *c, unsigned int max_free_entries, -+ unsigned int (*elem_val)(cache_link *elem), -+ void (*freed)(cache_link *elem)) -+{ -+ int i; -+ -+ c->entries = 0; -+ c->lru_entries = 0; -+ c->max_free_entries = max_free_entries; -+ list_init(&c->lru_list); -+ for (i = 0; i < CACHE_LISTS; i++) -+ list_init(&c->lists[i]); -+ c->elem_val = elem_val; -+ c->freed = freed; -+} -+ -+#endif /* __CACHE_H__ */ -Index: genext2fs-1.4.1/list.h -=================================================================== ---- /dev/null -+++ genext2fs-1.4.1/list.h -@@ -0,0 +1,78 @@ -+#ifndef __LIST_H__ -+#define __LIST_H__ -+ -+#if STDC_HEADERS -+# include -+# include -+#else -+# if HAVE_STDLIB_H -+# include -+# endif -+# if HAVE_STDDEF_H -+# include -+# endif -+#endif -+ -+#ifndef offsetof -+#define offsetof(st, m) \ -+ ((size_t) ( (char *)&((st *)(0))->m - (char *)0 )) -+#endif -+ -+#define container_of(ptr, type, member) ({ \ -+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ -+ (type *)( (char *)__mptr - offsetof(type,member) );}) -+ -+typedef struct list_elem -+{ -+ struct list_elem *next; -+ struct list_elem *prev; -+} list_elem; -+ -+static inline void list_init(list_elem *list) -+{ -+ list->next = list; -+ list->prev = list; -+} -+ -+static inline void list_add_after(list_elem *pos, list_elem *elem) -+{ -+ elem->next = pos->next; -+ elem->prev = pos; -+ pos->next->prev = elem; -+ pos->next = elem; -+} -+ -+static inline void list_add_before(list_elem *pos, list_elem *elem) -+{ -+ elem->prev = pos->prev; -+ elem->next = pos; -+ pos->prev->next = elem; -+ pos->prev = elem; -+} -+ -+static inline void list_del(list_elem *elem) -+{ -+ elem->next->prev = elem->prev; -+ elem->prev->next = elem->next; -+} -+ -+static inline void list_item_init(list_elem *elem) -+{ -+ elem->next = elem; -+ elem->prev = elem; -+} -+ -+static inline int list_empty(list_elem *elem) -+{ -+ return elem->next == elem; -+} -+ -+#define list_for_each_elem(list, curr) \ -+ for ((curr) = (list)->next; (curr) != (list); (curr) = (curr)->next) -+ -+#define list_for_each_elem_safe(list, curr, next) \ -+ for ((curr) = (list)->next, (next) = (curr)->next; \ -+ (curr) != (list); \ -+ (curr) = (next), (next) = (curr)->next) -+ -+#endif /* __LIST_H__ */ diff --git a/package/genext2fs/genext2fs.hash b/package/genext2fs/genext2fs.hash index add44c4c4e..20bb1c641b 100644 --- a/package/genext2fs/genext2fs.hash +++ b/package/genext2fs/genext2fs.hash @@ -1,3 +1,3 @@ # Locally computed: -sha256 404dbbfa7a86a6c3de8225c8da254d026b17fd288e05cec4df2cc7e1f4feecfc genext2fs-1.4.1.tar.gz +sha256 d3861e4fe89131bd21fbd25cf0b683b727b5c030c4c336fadcd738ada830aab0 genext2fs-1.5.0.tar.gz sha256 32b1062f7da84967e7019d01ab805935caa7ab7321a7ced0e30ebe75e5df1670 COPYING diff --git a/package/genext2fs/genext2fs.mk b/package/genext2fs/genext2fs.mk index dd907c8b12..adfa412e66 100644 --- a/package/genext2fs/genext2fs.mk +++ b/package/genext2fs/genext2fs.mk @@ -4,10 +4,12 @@ # ################################################################################ -GENEXT2FS_VERSION = 1.4.1 -GENEXT2FS_SITE = http://downloads.sourceforge.net/project/genext2fs/genext2fs/$(GENEXT2FS_VERSION) +GENEXT2FS_VERSION = 1.5.0 +GENEXT2FS_SITE = $(call github,bestouff,genext2fs,v$(GENEXT2FS_VERSION)) GENEXT2FS_LICENSE = GPL-2.0 GENEXT2FS_LICENSE_FILES = COPYING +# From git +GENEXT2FS_AUTORECONF = YES $(eval $(autotools-package)) $(eval $(host-autotools-package))