make_ext4fs: Remove off64_t in favor of standard off_t

This fixes building against cygwin which does not define off64_t. off_t
under modern versions of OS X(or macOS) defaults to 64-bit. Furthermore,
_FILE_OFFSET_BITS is defined to 64-bit which eliminates the need for
using off64_t directly. Also, musl just like OS X defines off_t as 64-bit
in all situations. Also removed some code related to this.

Signed-off by: Rosen Penev <[email protected]>

Author: neheb

ext4_utils.c

@@ -94,9 +94,9 @@ int ext4_bg_has_super_block(int bg)
 /* Function to read the primary superblock */
 void read_sb(int fd, struct ext4_super_block *sb)
 {
-	off64_t ret;
+	off_t ret;
 
-	ret = lseek64(fd, 1024, SEEK_SET);
+	ret = lseek(fd, 1024, SEEK_SET);
 	if (ret < 0)
 		critical_error_errno("failed to seek to superblock");
 
@@ -110,9 +110,9 @@ void read_sb(int fd, struct ext4_super_block *sb)
 /* Function to write a primary or backup superblock at a given offset */
 void write_sb(int fd, unsigned long long offset, struct ext4_super_block *sb)
 {
-	off64_t ret;
+	off_t ret;
 
-	ret = lseek64(fd, offset, SEEK_SET);
+	ret = lseek(fd, offset, SEEK_SET);
 	if (ret < 0)
 		critical_error_errno("failed to seek to superblock");
 
@@ -492,18 +492,18 @@ u64 parse_num(const char *arg)
 
 int read_ext(int fd, int verbose)
 {
-	off64_t ret;
+	off_t ret;
 	struct ext4_super_block sb;
 
 	read_sb(fd, &sb);
 
 	ext4_parse_sb_info(&sb);
 
-	ret = lseek64(fd, info.len, SEEK_SET);
+	ret = lseek(fd, info.len, SEEK_SET);
 	if (ret < 0)
 		critical_error_errno("failed to seek to end of input image");
 
-	ret = lseek64(fd, info.block_size * (aux_info.first_data_block + 1), SEEK_SET);
+	ret = lseek(fd, info.block_size * (aux_info.first_data_block + 1), SEEK_SET);
 	if (ret < 0)
 		critical_error_errno("failed to seek to block group descriptors");
 

ext4_utils.h

@@ -41,13 +41,6 @@ extern "C" {
 #include <setjmp.h>
 #include <stdint.h>
 
-#if defined(__APPLE__) && defined(__MACH__)
-#define lseek64 lseek
-#define ftruncate64 ftruncate
-#define mmap64 mmap
-#define off64_t off_t
-#endif
-
 #include "ext4_sb.h"
 
 extern int force;

ext4fixup.c

@@ -27,11 +27,6 @@
 #include <fcntl.h>
 #include <unistd.h>
 
-#if defined(__APPLE__) && defined(__MACH__)
-#define lseek64 lseek
-#define off64_t off_t
-#endif
-
 /* The inode block count for a file/directory is in units of 512 byte blocks,
  * _NOT_ the filesystem block size!
  */
@@ -88,7 +83,7 @@ static int get_fs_fixup_state(int fd)
         return no_write_fixup_state;
     }
 
-    lseek64(fd, 0, SEEK_SET);
+    lseek(fd, 0, SEEK_SET);
     len = read(fd, &magic, sizeof(magic));
     if (len != sizeof(magic)) {
         critical_error("cannot read fixup_state\n");
@@ -137,7 +132,7 @@ static int set_fs_fixup_state(int fd, int state)
             break;
     }
 
-    lseek64(fd, 0, SEEK_SET);
+    lseek(fd, 0, SEEK_SET);
     len = write(fd, &magic, sizeof(magic));
     if (len != sizeof(magic)) {
         critical_error("cannot write fixup_state\n");
@@ -162,7 +157,7 @@ static int set_fs_fixup_state(int fd, int state)
 static int read_inode(int fd, unsigned int inum, struct ext4_inode *inode)
 {
     unsigned int bg_num, bg_offset;
-    off64_t inode_offset;
+    off_t inode_offset;
     int len;
 
     bg_num = (inum-1) / info.inodes_per_group;
@@ -171,7 +166,7 @@ static int read_inode(int fd, unsigned int inum, struct ext4_inode *inode)
     inode_offset = ((unsigned long long)aux_info.bg_desc[bg_num].bg_inode_table * info.block_size) +
                     (bg_offset * info.inode_size);
 
-    if (lseek64(fd, inode_offset, SEEK_SET) < 0) {
+    if (lseek(fd, inode_offset, SEEK_SET) < 0) {
         critical_error_errno("failed to seek to inode %d\n", inum);
     }
 
@@ -185,12 +180,12 @@ static int read_inode(int fd, unsigned int inum, struct ext4_inode *inode)
 
 static int read_block(int fd, unsigned long long block_num, void *block)
 {
-    off64_t off;
+    off_t off;
     unsigned int len;
 
     off = block_num * info.block_size;
 
-    if (lseek64(fd, off, SEEK_SET) , 0) {
+    if (lseek(fd, off, SEEK_SET) , 0) {
         critical_error_errno("failed to seek to block %lld\n", block_num);
     }
 
@@ -204,7 +199,7 @@ static int read_block(int fd, unsigned long long block_num, void *block)
 
 static int write_block(int fd, unsigned long long block_num, void *block)
 {
-    off64_t off;
+    off_t off;
     unsigned int len;
 
     if (no_write) {
@@ -213,7 +208,7 @@ static int write_block(int fd, unsigned long long block_num, void *block)
 
     off = block_num * info.block_size;
 
-    if (lseek64(fd, off, SEEK_SET) < 0) {
+    if (lseek(fd, off, SEEK_SET) < 0) {
         critical_error_errno("failed to seek to block %lld\n", block_num);
     }
 
@@ -259,7 +254,7 @@ static void check_inode_bitmap(int fd, unsigned int bg_num)
 /* Update the superblock and bgdesc of the specified block group */
 static int update_superblocks_and_bg_desc(int fd, int state)
 {
-    off64_t ret;
+    off_t ret;
     struct ext4_super_block sb;
     unsigned int num_block_groups, total_new_inodes;
     unsigned int i;
@@ -323,7 +318,7 @@ static int update_superblocks_and_bg_desc(int fd, int state)
                          &sb);
             }
 
-            ret = lseek64(fd, ((unsigned long long)i * info.blocks_per_group * info.block_size) +
+            ret = lseek(fd, ((unsigned long long)i * info.blocks_per_group * info.block_size) +
                               (info.block_size * (aux_info.first_data_block + 1)), SEEK_SET);
             if (ret < 0)
                 critical_error_errno("failed to seek to block group descriptors");
@@ -409,7 +404,7 @@ static int get_extent_ents(struct ext4_extent_header *ext_hdr, unsigned long lon
 {
     int i, j;
     struct ext4_extent *extent;
-    off64_t fs_block_num;
+    off_t fs_block_num;
 
     if (ext_hdr->eh_depth != 0) {
         critical_error("get_extent_ents called with eh_depth != 0\n");
@@ -421,7 +416,7 @@ static int get_extent_ents(struct ext4_extent_header *ext_hdr, unsigned long lon
     extent = (struct ext4_extent *)(ext_hdr + 1);
 
     for (i = 0; i < ext_hdr->eh_entries; i++) {
-         fs_block_num = ((off64_t)extent->ee_start_hi << 32) | extent->ee_start_lo;
+         fs_block_num = ((off_t)extent->ee_start_hi << 32) | extent->ee_start_lo;
          for (j = 0; j < extent->ee_len; j++) {
              block_list[extent->ee_block+j] = fs_block_num+j;
          }
@@ -436,7 +431,7 @@ static int get_extent_idx(int fd, struct ext4_extent_header *ext_hdr, unsigned l
     int i;
     struct ext4_extent_idx *extent_idx;
     struct ext4_extent_header *tmp_ext_hdr;
-    off64_t fs_block_num;
+    off_t fs_block_num;
     unsigned char block[MAX_EXT4_BLOCK_SIZE];
 
     /* Sanity check */
@@ -450,7 +445,7 @@ static int get_extent_idx(int fd, struct ext4_extent_header *ext_hdr, unsigned l
     extent_idx = (struct ext4_extent_idx *)(ext_hdr + 1);
 
     for (i = 0; i < ext_hdr->eh_entries; i++) {
-         fs_block_num = ((off64_t)extent_idx->ei_leaf_hi << 32) | extent_idx->ei_leaf_lo;
+         fs_block_num = ((off_t)extent_idx->ei_leaf_hi << 32) | extent_idx->ei_leaf_lo;
          read_block(fd, fs_block_num, block);
          tmp_ext_hdr = (struct ext4_extent_header *)block;
 

extent.c

@@ -55,7 +55,7 @@ static u8 *extent_create_backing(struct block_allocation *alloc,
 static void extent_create_backing_file(struct block_allocation *alloc,
 	u64 backing_len, const char *filename)
 {
-	off64_t offset = 0;
+	off_t offset = 0;
 	for (; alloc != NULL && backing_len > 0; get_next_region(alloc)) {
 		u32 region_block;
 		u32 region_len;

libsparse/output_file.c

@@ -35,13 +35,6 @@
 #include "sparse_crc32.h"
 #include "sparse_format.h"
 
-#if defined(__APPLE__) && defined(__MACH__)
-#define lseek64 lseek
-#define ftruncate64 ftruncate
-#define mmap64 mmap
-#define off64_t off_t
-#endif
-
 #define min(a, b) \
 	({ typeof(a) _a = (a); typeof(b) _b = (b); (_a < _b) ? _a : _b; })
 
@@ -119,12 +112,12 @@ static int file_open(struct output_file *out, int fd)
 
 static int file_skip(struct output_file *out, int64_t cnt)
 {
-	off64_t ret;
+	off_t ret;
 	struct output_file_normal *outn = to_output_file_normal(out);
 
-	ret = lseek64(outn->fd, cnt, SEEK_CUR);
+	ret = lseek(outn->fd, cnt, SEEK_CUR);
 	if (ret < 0) {
-		error_errno("lseek64");
+		error_errno("lseek");
 		return -1;
 	}
 	return 0;
@@ -135,7 +128,7 @@ static int file_pad(struct output_file *out, int64_t len)
 	int ret;
 	struct output_file_normal *outn = to_output_file_normal(out);
 
-	ret = ftruncate64(outn->fd, len);
+	ret = ftruncate(outn->fd, len);
 	if (ret < 0) {
 		return -errno;
 	}
@@ -191,7 +184,7 @@ static int gz_file_open(struct output_file *out, int fd)
 
 static int gz_file_skip(struct output_file *out, int64_t cnt)
 {
-	off64_t ret;
+	off_t ret;
 	struct output_file_gz *outgz = to_output_file_gz(out);
 
 	ret = gzseek(outgz->gz_fd, cnt, SEEK_CUR);
@@ -204,7 +197,7 @@ static int gz_file_skip(struct output_file *out, int64_t cnt)
 
 static int gz_file_pad(struct output_file *out, int64_t len)
 {
-	off64_t ret;
+	off_t ret;
 	struct output_file_gz *outgz = to_output_file_gz(out);
 
 	ret = gztell(outgz->gz_fd);
@@ -699,7 +692,7 @@ int write_fd_chunk(struct output_file *out, unsigned int len,
 	aligned_diff = offset - aligned_offset;
 	buffer_size = len + aligned_diff;
 
-	char *data = mmap64(NULL, buffer_size, PROT_READ, MAP_SHARED, fd,
+	char *data = mmap(NULL, buffer_size, PROT_READ, MAP_SHARED, fd,
 			aligned_offset);
 	if (data == MAP_FAILED) {
 		return -errno;

libsparse/sparse_read.c

@@ -35,11 +35,6 @@
 #include "sparse_file.h"
 #include "sparse_format.h"
 
-#if defined(__APPLE__) && defined(__MACH__)
-#define lseek64 lseek
-#define off64_t off_t
-#endif
-
 #define SPARSE_HEADER_MAJOR_VER 1
 #define SPARSE_HEADER_LEN       (sizeof(sparse_header_t))
 #define CHUNK_HEADER_LEN (sizeof(chunk_header_t))
@@ -126,7 +121,7 @@ static int process_raw_chunk(struct sparse_file *s, unsigned int chunk_size,
 			len -= chunk;
 		}
 	} else {
-		lseek64(fd, len, SEEK_CUR);
+		lseek(fd, len, SEEK_CUR);
 	}
 
 	return 0;
@@ -216,7 +211,7 @@ static int process_crc32_chunk(int fd, unsigned int chunk_size, uint32_t crc32)
 	return 0;
 }
 
-static int process_chunk(struct sparse_file *s, int fd, off64_t offset,
+static int process_chunk(struct sparse_file *s, int fd, off_t offset,
 		unsigned int chunk_hdr_sz, chunk_header_t *chunk_header,
 		unsigned int cur_block, uint32_t *crc_ptr)
 {
@@ -277,7 +272,7 @@ static int sparse_file_read_sparse(struct sparse_file *s, int fd, bool crc)
 	uint32_t crc32 = 0;
 	uint32_t *crc_ptr = 0;
 	unsigned int cur_block = 0;
-	off64_t offset;
+	off_t offset;
 
 	if (!copybuf) {
 		copybuf = malloc(COPY_BUF_SIZE);
@@ -316,7 +311,7 @@ static int sparse_file_read_sparse(struct sparse_file *s, int fd, bool crc)
 		/* Skip the remaining bytes in a header that is longer than
 		 * we expected.
 		 */
-		lseek64(fd, sparse_header.file_hdr_sz - SPARSE_HEADER_LEN, SEEK_CUR);
+		lseek(fd, sparse_header.file_hdr_sz - SPARSE_HEADER_LEN, SEEK_CUR);
 	}
 
 	for (i = 0; i < sparse_header.total_chunks; i++) {
@@ -329,10 +324,10 @@ static int sparse_file_read_sparse(struct sparse_file *s, int fd, bool crc)
 			/* Skip the remaining bytes in a header that is longer than
 			 * we expected.
 			 */
-			lseek64(fd, sparse_header.chunk_hdr_sz - CHUNK_HEADER_LEN, SEEK_CUR);
+			lseek(fd, sparse_header.chunk_hdr_sz - CHUNK_HEADER_LEN, SEEK_CUR);
 		}
 
-		offset = lseek64(fd, 0, SEEK_CUR);
+		offset = lseek(fd, 0, SEEK_CUR);
 
 		ret = process_chunk(s, fd, offset, sparse_header.chunk_hdr_sz, &chunk_header,
 				cur_block, crc_ptr);
@@ -451,7 +446,7 @@ struct sparse_file *sparse_file_import(int fd, bool verbose, bool crc)
 		return NULL;
 	}
 
-	ret = lseek64(fd, 0, SEEK_SET);
+	ret = lseek(fd, 0, SEEK_SET);
 	if (ret < 0) {
 		verbose_error(verbose, ret, "seeking");
 		sparse_file_destroy(s);
@@ -480,12 +475,12 @@ struct sparse_file *sparse_file_import_auto(int fd, bool crc, bool verbose)
 		return s;
 	}
 
-	len = lseek64(fd, 0, SEEK_END);
+	len = lseek(fd, 0, SEEK_END);
 	if (len < 0) {
 		return NULL;
 	}
 
-	lseek64(fd, 0, SEEK_SET);
+	lseek(fd, 0, SEEK_SET);
 
 	s = sparse_file_new(4096, len);
 	if (!s) {