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Code Issues

Make ar7_part more readable and endianness safe

Browse Source 
SVN-Revision: 8886
This commit is contained in:
Matteo Croce 2007-09-20 19:25:38 +00:00
parent fbc7e5e4fc
commit 8d162264af
2 changed files with 64 additions and 42 deletions
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29
target/linux/ar7/files/drivers/mtd/ar7part.c
View File

@ -26,7 +26,18 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/bootmem.h>
#include <linux/squashfs_fs.h>
#include <linux/magic.h>
#define AR7_PARTS 4
#define ROOT_OFFSET 0xe0000
#ifdef CONFIG_CPU_LITTLE_ENDIAN
#define LOADER_MAGIC1 0xfeedfa42
#define LOADER_MAGIC2 0xfeed1281
#else
#define LOADER_MAGIC1 0x42faedfe
#define LOADER_MAGIC2 0x8112edfe
#endif
struct ar7_bin_rec {
unsigned int checksum;
@ -34,7 +45,7 @@ struct ar7_bin_rec {
unsigned int address;
};
static struct mtd_partition ar7_parts[5];
static struct mtd_partition ar7_parts[AR7_PARTS];
static int create_mtd_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
@ -43,12 +54,10 @@ static int create_mtd_partitions(struct mtd_info *master,
struct ar7_bin_rec header;
unsigned int offset, len;
unsigned int pre_size = master->erasesize, post_size = 0;
unsigned int root_offset = 0xe0000;
unsigned int root_offset = ROOT_OFFSET;
int retries = 10;
printk(KERN_INFO "Parsing AR7 partition map...\n");
ar7_parts[0].name = "loader";
ar7_parts[0].offset = 0;
ar7_parts[0].size = master->erasesize;
@ -65,9 +74,9 @@ static int create_mtd_partitions(struct mtd_info *master,
sizeof(header), &len, (u_char *)&header);
if (!strncmp((char *)&header, "TIENV0.8", 8))
ar7_parts[1].offset = pre_size;
if (header.checksum == 0xfeedfa42)
if (header.checksum == LOADER_MAGIC1)
break;
if (header.checksum == 0xfeed1281)
if (header.checksum == LOADER_MAGIC2)
break;
pre_size += master->erasesize;
} while (retries--);
@ -80,7 +89,7 @@ static int create_mtd_partitions(struct mtd_info *master,
}
switch (header.checksum) {
case 0xfeedfa42:
case LOADER_MAGIC1:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
@ -88,7 +97,7 @@ static int create_mtd_partitions(struct mtd_info *master,
}
root_offset = offset + sizeof(header) + 4;
break;
case 0xfeed1281:
case LOADER_MAGIC2:
while (header.length) {
offset += sizeof(header) + header.length;
master->read(master, offset, sizeof(header),
@ -120,7 +129,7 @@ static int create_mtd_partitions(struct mtd_info *master,
ar7_parts[3].mask_flags = 0;
*pparts = ar7_parts;
return 4;
return AR7_PARTS;
}
static struct mtd_part_parser ar7_parser = {

77
target/linux/generic-2.6/patches-2.6.22/001-squashfs.patch
View File

@ -1,6 +1,6 @@
diff -urN linux-2.6.21.1.old/fs/Kconfig linux-2.6.21.1.dev/fs/Kconfig
--- linux-2.6.21.1.old/fs/Kconfig 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.dev/fs/Kconfig 2007-05-26 19:00:37.121351760 +0200
diff -urN linux-2.6.22.4/fs/Kconfig linux-2.6.22.4-squashfs/fs/Kconfig
--- linux-2.6.22.4/fs/Kconfig 2007-08-21 06:33:06.000000000 +0200
+++ linux-2.6.22.4-squashfs/fs/Kconfig 2007-09-20 19:13:44.000000000 +0200
@@ -1367,6 +1367,71 @@
If unsure, say N.
@ -73,9 +73,9 @@ diff -urN linux-2.6.21.1.old/fs/Kconfig linux-2.6.21.1.dev/fs/Kconfig
config VXFS_FS
tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
depends on BLOCK
diff -urN linux-2.6.21.1.old/fs/Makefile linux-2.6.21.1.dev/fs/Makefile
--- linux-2.6.21.1.old/fs/Makefile 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.dev/fs/Makefile 2007-05-26 19:00:37.121351760 +0200
diff -urN linux-2.6.22.4/fs/Makefile linux-2.6.22.4-squashfs/fs/Makefile
--- linux-2.6.22.4/fs/Makefile 2007-08-21 06:33:06.000000000 +0200
+++ linux-2.6.22.4-squashfs/fs/Makefile 2007-09-20 19:13:44.000000000 +0200
@@ -72,6 +72,7 @@
obj-$(CONFIG_JBD2) += jbd2/
obj-$(CONFIG_EXT2_FS) += ext2/
@ -84,9 +84,9 @@ diff -urN linux-2.6.21.1.old/fs/Makefile linux-2.6.21.1.dev/fs/Makefile
obj-$(CONFIG_RAMFS) += ramfs/
obj-$(CONFIG_HUGETLBFS) += hugetlbfs/
obj-$(CONFIG_CODA_FS) += coda/
diff -urN linux-2.6.21.1.old/fs/squashfs/inode.c linux-2.6.21.1.dev/fs/squashfs/inode.c
--- linux-2.6.21.1.old/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/fs/squashfs/inode.c 2007-05-26 19:00:37.123351456 +0200
diff -urN linux-2.6.22.4/fs/squashfs/inode.c linux-2.6.22.4-squashfs/fs/squashfs/inode.c
--- linux-2.6.22.4/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/fs/squashfs/inode.c 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,2122 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
@ -2210,9 +2210,9 @@ diff -urN linux-2.6.21.1.old/fs/squashfs/inode.c linux-2.6.21.1.dev/fs/squashfs/
+MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem");
+MODULE_AUTHOR("Phillip Lougher <phillip@lougher.org.uk>");
+MODULE_LICENSE("GPL");
diff -urN linux-2.6.21.1.old/fs/squashfs/Makefile linux-2.6.21.1.dev/fs/squashfs/Makefile
--- linux-2.6.21.1.old/fs/squashfs/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/fs/squashfs/Makefile 2007-05-26 19:00:37.123351456 +0200
diff -urN linux-2.6.22.4/fs/squashfs/Makefile linux-2.6.22.4-squashfs/fs/squashfs/Makefile
--- linux-2.6.22.4/fs/squashfs/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/fs/squashfs/Makefile 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,7 @@
+#
+# Makefile for the linux squashfs routines.
@ -2221,9 +2221,9 @@ diff -urN linux-2.6.21.1.old/fs/squashfs/Makefile linux-2.6.21.1.dev/fs/squashfs
+obj-$(CONFIG_SQUASHFS) += squashfs.o
+squashfs-y += inode.o
+squashfs-y += squashfs2_0.o
diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs2_0.c linux-2.6.21.1.dev/fs/squashfs/squashfs2_0.c
--- linux-2.6.21.1.old/fs/squashfs/squashfs2_0.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/fs/squashfs/squashfs2_0.c 2007-05-26 19:00:37.125351152 +0200
diff -urN linux-2.6.22.4/fs/squashfs/squashfs2_0.c linux-2.6.22.4-squashfs/fs/squashfs/squashfs2_0.c
--- linux-2.6.22.4/fs/squashfs/squashfs2_0.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/fs/squashfs/squashfs2_0.c 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,758 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
@ -2983,9 +2983,9 @@ diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs2_0.c linux-2.6.21.1.dev/fs/squ
+
+ return 1;
+}
diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs.h linux-2.6.21.1.dev/fs/squashfs/squashfs.h
--- linux-2.6.21.1.old/fs/squashfs/squashfs.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/fs/squashfs/squashfs.h 2007-05-26 19:00:37.125351152 +0200
diff -urN linux-2.6.22.4/fs/squashfs/squashfs.h linux-2.6.22.4-squashfs/fs/squashfs/squashfs.h
--- linux-2.6.22.4/fs/squashfs/squashfs.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/fs/squashfs/squashfs.h 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,86 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
@ -3073,9 +3073,22 @@ diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs.h linux-2.6.21.1.dev/fs/squash
+ return 0;
+}
+#endif
diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/include/linux/squashfs_fs.h
--- linux-2.6.21.1.old/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/include/linux/squashfs_fs.h 2007-05-26 19:00:37.143348416 +0200
diff -urN linux-2.6.22.4/include/linux/magic.h linux-2.6.22.4-squashfs/include/linux/magic.h
--- linux-2.6.22.4/include/linux/magic.h 2007-08-21 06:33:06.000000000 +0200
+++ linux-2.6.22.4-squashfs/include/linux/magic.h 2007-09-20 19:15:43.000000000 +0200
@@ -36,6 +36,9 @@
#define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
#define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
+#define SQUASHFS_MAGIC 0x73717368
+#define SQUASHFS_MAGIC_SWAP 0x68737173
+
#define SMB_SUPER_MAGIC 0x517B
#define USBDEVICE_SUPER_MAGIC 0x9fa2
diff -urN linux-2.6.22.4/include/linux/squashfs_fs.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs.h
--- linux-2.6.22.4/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs.h 2007-09-20 19:15:01.000000000 +0200
@@ -0,0 +1,911 @@
+#ifndef SQUASHFS_FS
+#define SQUASHFS_FS
@ -3117,8 +3130,6 @@ diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/incl
+#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
+#define SQUASHFS_MAJOR 3
+#define SQUASHFS_MINOR 0
+#define SQUASHFS_MAGIC 0x73717368
+#define SQUASHFS_MAGIC_SWAP 0x68737173
+#define SQUASHFS_START 0
+
+/* size of metadata (inode and directory) blocks */
@ -3263,6 +3274,8 @@ diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/incl
+#define SQUASHFS_META_NUMBER 8
+#define SQUASHFS_SLOTS 4
+
+#include <linux/magic.h>
+
+struct meta_entry {
+ long long data_block;
+ unsigned int index_block;
@ -3988,9 +4001,9 @@ diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/incl
+
+#endif
+#endif
diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_i.h linux-2.6.21.1.dev/include/linux/squashfs_fs_i.h
--- linux-2.6.21.1.old/include/linux/squashfs_fs_i.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/include/linux/squashfs_fs_i.h 2007-05-26 19:00:37.143348416 +0200
diff -urN linux-2.6.22.4/include/linux/squashfs_fs_i.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs_i.h
--- linux-2.6.22.4/include/linux/squashfs_fs_i.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs_i.h 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,45 @@
+#ifndef SQUASHFS_FS_I
+#define SQUASHFS_FS_I
@ -4037,9 +4050,9 @@ diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_i.h linux-2.6.21.1.dev/in
+ struct inode vfs_inode;
+};
+#endif
diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_sb.h linux-2.6.21.1.dev/include/linux/squashfs_fs_sb.h
--- linux-2.6.21.1.old/include/linux/squashfs_fs_sb.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1.dev/include/linux/squashfs_fs_sb.h 2007-05-26 19:00:37.144348264 +0200
diff -urN linux-2.6.22.4/include/linux/squashfs_fs_sb.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs_sb.h
--- linux-2.6.22.4/include/linux/squashfs_fs_sb.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs_sb.h 2007-09-20 19:13:44.000000000 +0200
@@ -0,0 +1,74 @@
+#ifndef SQUASHFS_FS_SB
+#define SQUASHFS_FS_SB
@ -4115,9 +4128,9 @@ diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_sb.h linux-2.6.21.1.dev/i
+ int (*read_fragment_index_table)(struct super_block *s);
+};
+#endif
diff -urN linux-2.6.21.1.old/init/do_mounts_rd.c linux-2.6.21.1.dev/init/do_mounts_rd.c
--- linux-2.6.21.1.old/init/do_mounts_rd.c 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.dev/init/do_mounts_rd.c 2007-05-26 19:00:37.144348264 +0200
diff -urN linux-2.6.22.4/init/do_mounts_rd.c linux-2.6.22.4-squashfs/init/do_mounts_rd.c
--- linux-2.6.22.4/init/do_mounts_rd.c 2007-08-21 06:33:06.000000000 +0200
+++ linux-2.6.22.4-squashfs/init/do_mounts_rd.c 2007-09-20 19:13:44.000000000 +0200
@@ -5,6 +5,7 @@
#include <linux/ext2_fs.h>
#include <linux/romfs_fs.h>