From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- fs/befs/super.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 fs/befs/super.c (limited to 'fs/befs/super.c') diff --git a/fs/befs/super.c b/fs/befs/super.c new file mode 100644 index 000000000..7c50025c9 --- /dev/null +++ b/fs/befs/super.c @@ -0,0 +1,118 @@ +/* + * super.c + * + * Copyright (C) 2001-2002 Will Dyson + * + * Licensed under the GNU GPL. See the file COPYING for details. + * + */ + +#include +#include /* for PAGE_SIZE */ + +#include "befs.h" +#include "super.h" + +/* + * befs_load_sb -- Read from disk and properly byteswap all the fields + * of the befs superblock + */ +int +befs_load_sb(struct super_block *sb, befs_super_block *disk_sb) +{ + struct befs_sb_info *befs_sb = BEFS_SB(sb); + + /* Check the byte order of the filesystem */ + if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_LE) + befs_sb->byte_order = BEFS_BYTESEX_LE; + else if (disk_sb->fs_byte_order == BEFS_BYTEORDER_NATIVE_BE) + befs_sb->byte_order = BEFS_BYTESEX_BE; + + befs_sb->magic1 = fs32_to_cpu(sb, disk_sb->magic1); + befs_sb->magic2 = fs32_to_cpu(sb, disk_sb->magic2); + befs_sb->magic3 = fs32_to_cpu(sb, disk_sb->magic3); + befs_sb->block_size = fs32_to_cpu(sb, disk_sb->block_size); + befs_sb->block_shift = fs32_to_cpu(sb, disk_sb->block_shift); + befs_sb->num_blocks = fs64_to_cpu(sb, disk_sb->num_blocks); + befs_sb->used_blocks = fs64_to_cpu(sb, disk_sb->used_blocks); + befs_sb->inode_size = fs32_to_cpu(sb, disk_sb->inode_size); + + befs_sb->blocks_per_ag = fs32_to_cpu(sb, disk_sb->blocks_per_ag); + befs_sb->ag_shift = fs32_to_cpu(sb, disk_sb->ag_shift); + befs_sb->num_ags = fs32_to_cpu(sb, disk_sb->num_ags); + + befs_sb->flags = fs32_to_cpu(sb, disk_sb->flags); + + befs_sb->log_blocks = fsrun_to_cpu(sb, disk_sb->log_blocks); + befs_sb->log_start = fs64_to_cpu(sb, disk_sb->log_start); + befs_sb->log_end = fs64_to_cpu(sb, disk_sb->log_end); + + befs_sb->root_dir = fsrun_to_cpu(sb, disk_sb->root_dir); + befs_sb->indices = fsrun_to_cpu(sb, disk_sb->indices); + befs_sb->nls = NULL; + + return BEFS_OK; +} + +int +befs_check_sb(struct super_block *sb) +{ + struct befs_sb_info *befs_sb = BEFS_SB(sb); + + /* Check magic headers of super block */ + if ((befs_sb->magic1 != BEFS_SUPER_MAGIC1) + || (befs_sb->magic2 != BEFS_SUPER_MAGIC2) + || (befs_sb->magic3 != BEFS_SUPER_MAGIC3)) { + befs_error(sb, "invalid magic header"); + return BEFS_ERR; + } + + /* + * Check blocksize of BEFS. + * + * Blocksize of BEFS is 1024, 2048, 4096 or 8192. + */ + + if ((befs_sb->block_size != 1024) + && (befs_sb->block_size != 2048) + && (befs_sb->block_size != 4096) + && (befs_sb->block_size != 8192)) { + befs_error(sb, "invalid blocksize: %u", befs_sb->block_size); + return BEFS_ERR; + } + + if (befs_sb->block_size > PAGE_SIZE) { + befs_error(sb, "blocksize(%u) cannot be larger " + "than system pagesize(%lu)", befs_sb->block_size, + PAGE_SIZE); + return BEFS_ERR; + } + + /* + * block_shift and block_size encode the same information + * in different ways as a consistency check. + */ + + if ((1 << befs_sb->block_shift) != befs_sb->block_size) { + befs_error(sb, "block_shift disagrees with block_size. " + "Corruption likely."); + return BEFS_ERR; + } + + + /* ag_shift also encodes the same information as blocks_per_ag in a + * different way, non-fatal consistency check + */ + if ((1 << befs_sb->ag_shift) != befs_sb->blocks_per_ag) + befs_error(sb, "ag_shift disagrees with blocks_per_ag."); + + if (befs_sb->log_start != befs_sb->log_end || + befs_sb->flags == BEFS_DIRTY) { + befs_error(sb, "Filesystem not clean! There are blocks in the " + "journal. You must boot into BeOS and mount this " + "volume to make it clean."); + return BEFS_ERR; + } + + return BEFS_OK; +} -- cgit v1.3.1