X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=fs%2Fadfs%2Fsuper.c;h=65b04ebb51c30525b8623b15e8bab3b8b71388a8;hb=d2fbf4b6d585e40f2369675148777abce3abd0e7;hp=ffb669f9bba78a76cfedce50b2029d95e88299f0;hpb=933a90bf4f3505f8ec83bda21a3c7d70d7c2b426;p=platform%2Fkernel%2Flinux-starfive.git diff --git a/fs/adfs/super.c b/fs/adfs/super.c index ffb669f..65b04eb 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -6,7 +6,6 @@ */ #include #include -#include #include #include #include @@ -17,25 +16,42 @@ #include "dir_f.h" #include "dir_fplus.h" +#define ADFS_SB_FLAGS SB_NOATIME + #define ADFS_DEFAULT_OWNER_MASK S_IRWXU #define ADFS_DEFAULT_OTHER_MASK (S_IRWXG | S_IRWXO) void __adfs_error(struct super_block *sb, const char *function, const char *fmt, ...) { - char error_buf[128]; + struct va_format vaf; va_list args; va_start(args, fmt); - vsnprintf(error_buf, sizeof(error_buf), fmt, args); - va_end(args); + vaf.fmt = fmt; + vaf.va = &args; - printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %s\n", + printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %pV\n", sb->s_id, function ? ": " : "", - function ? function : "", error_buf); + function ? function : "", &vaf); + + va_end(args); +} + +void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + printk("%sADFS-fs (%s): %pV\n", pfx, sb->s_id, &vaf); + va_end(args); } static int adfs_checkdiscrecord(struct adfs_discrecord *dr) { + unsigned int max_idlen; int i; /* sector size must be 256, 512 or 1024 bytes */ @@ -55,8 +71,13 @@ static int adfs_checkdiscrecord(struct adfs_discrecord *dr) if (le32_to_cpu(dr->disc_size_high) >> dr->log2secsize) return 1; - /* idlen must be no greater than 19 v2 [1.0] */ - if (dr->idlen > 19) + /* + * Maximum idlen is limited to 16 bits for new directories by + * the three-byte storage of an indirect disc address. For + * big directories, idlen must be no greater than 19 v2 [1.0] + */ + max_idlen = dr->format_version ? 19 : 16; + if (dr->idlen > max_idlen) return 1; /* reserved bytes should be zero */ @@ -152,10 +173,10 @@ static const match_table_t tokens = { {Opt_err, NULL} }; -static int parse_options(struct super_block *sb, char *options) +static int parse_options(struct super_block *sb, struct adfs_sb_info *asb, + char *options) { char *p; - struct adfs_sb_info *asb = ADFS_SB(sb); int option; if (!options) @@ -199,8 +220,9 @@ static int parse_options(struct super_block *sb, char *options) asb->s_ftsuffix = option; break; default: - printk("ADFS-fs: unrecognised mount option \"%s\" " - "or missing value\n", p); + adfs_msg(sb, KERN_ERR, + "unrecognised mount option \"%s\" or missing value", + p); return -EINVAL; } } @@ -209,21 +231,31 @@ static int parse_options(struct super_block *sb, char *options) static int adfs_remount(struct super_block *sb, int *flags, char *data) { + struct adfs_sb_info temp_asb; + int ret; + sync_filesystem(sb); - *flags |= SB_NODIRATIME; - return parse_options(sb, data); + *flags |= ADFS_SB_FLAGS; + + temp_asb = *ADFS_SB(sb); + ret = parse_options(sb, &temp_asb, data); + if (ret == 0) + *ADFS_SB(sb) = temp_asb; + + return ret; } static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; struct adfs_sb_info *sbi = ADFS_SB(sb); + struct adfs_discrecord *dr = adfs_map_discrecord(sbi->s_map); u64 id = huge_encode_dev(sb->s_bdev->bd_dev); buf->f_type = ADFS_SUPER_MAGIC; buf->f_namelen = sbi->s_namelen; buf->f_bsize = sb->s_blocksize; - buf->f_blocks = sbi->s_size; + buf->f_blocks = adfs_disc_size(dr) >> sb->s_blocksize_bits; buf->f_files = sbi->s_ids_per_zone * sbi->s_map_size; buf->f_bavail = buf->f_bfree = adfs_map_free(sb); @@ -327,8 +359,7 @@ static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_di i = zone - 1; dm[0].dm_startblk = 0; dm[0].dm_startbit = ADFS_DR_SIZE_BITS; - dm[i].dm_endbit = (le32_to_cpu(dr->disc_size_high) << (32 - dr->log2bpmb)) + - (le32_to_cpu(dr->disc_size) >> dr->log2bpmb) + + dm[i].dm_endbit = (adfs_disc_size(dr) >> dr->log2bpmb) + (ADFS_DR_SIZE_BITS - i * zone_size); if (adfs_checkmap(sb, dm)) @@ -344,27 +375,18 @@ error_free: return ERR_PTR(-EIO); } -static inline unsigned long adfs_discsize(struct adfs_discrecord *dr, int block_bits) -{ - unsigned long discsize; - - discsize = le32_to_cpu(dr->disc_size_high) << (32 - block_bits); - discsize |= le32_to_cpu(dr->disc_size) >> block_bits; - - return discsize; -} - static int adfs_fill_super(struct super_block *sb, void *data, int silent) { struct adfs_discrecord *dr; struct buffer_head *bh; struct object_info root_obj; unsigned char *b_data; + unsigned int blocksize; struct adfs_sb_info *asb; struct inode *root; int ret = -EINVAL; - sb->s_flags |= SB_NODIRATIME; + sb->s_flags |= ADFS_SB_FLAGS; asb = kzalloc(sizeof(*asb), GFP_KERNEL); if (!asb) @@ -378,12 +400,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK; asb->s_ftsuffix = 0; - if (parse_options(sb, data)) + if (parse_options(sb, asb, data)) goto error; sb_set_blocksize(sb, BLOCK_SIZE); if (!(bh = sb_bread(sb, ADFS_DISCRECORD / BLOCK_SIZE))) { - adfs_error(sb, "unable to read superblock"); + adfs_msg(sb, KERN_ERR, "error: unable to read superblock"); ret = -EIO; goto error; } @@ -391,11 +413,8 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) b_data = bh->b_data + (ADFS_DISCRECORD % BLOCK_SIZE); if (adfs_checkbblk(b_data)) { - if (!silent) - printk("VFS: Can't find an adfs filesystem on dev " - "%s.\n", sb->s_id); ret = -EINVAL; - goto error_free_bh; + goto error_badfs; } dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET); @@ -404,33 +423,33 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) * Do some sanity checks on the ADFS disc record */ if (adfs_checkdiscrecord(dr)) { - if (!silent) - printk("VPS: Can't find an adfs filesystem on dev " - "%s.\n", sb->s_id); ret = -EINVAL; - goto error_free_bh; + goto error_badfs; } + blocksize = 1 << dr->log2secsize; brelse(bh); - if (sb_set_blocksize(sb, 1 << dr->log2secsize)) { + + if (sb_set_blocksize(sb, blocksize)) { bh = sb_bread(sb, ADFS_DISCRECORD / sb->s_blocksize); if (!bh) { - adfs_error(sb, "couldn't read superblock on " - "2nd try."); + adfs_msg(sb, KERN_ERR, + "error: couldn't read superblock on 2nd try."); ret = -EIO; goto error; } b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize); if (adfs_checkbblk(b_data)) { - adfs_error(sb, "disc record mismatch, very weird!"); + adfs_msg(sb, KERN_ERR, + "error: disc record mismatch, very weird!"); ret = -EINVAL; goto error_free_bh; } dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET); } else { if (!silent) - printk(KERN_ERR "VFS: Unsupported blocksize on dev " - "%s.\n", sb->s_id); + adfs_msg(sb, KERN_ERR, + "error: unsupported blocksize"); ret = -EINVAL; goto error; } @@ -443,8 +462,6 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) asb->s_idlen = dr->idlen; asb->s_map_size = dr->nzones | (dr->nzones_high << 8); asb->s_map2blk = dr->log2bpmb - dr->log2secsize; - asb->s_size = adfs_discsize(dr, sb->s_blocksize_bits); - asb->s_version = dr->format_version; asb->s_log2sharesize = dr->log2sharesize; asb->s_map = adfs_read_map(sb, dr); @@ -460,9 +477,9 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) */ sb->s_op = &adfs_sops; - dr = (struct adfs_discrecord *)(asb->s_map[0].dm_bh->b_data + 4); + dr = adfs_map_discrecord(asb->s_map); - root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root); + root_obj.parent_id = root_obj.indaddr = le32_to_cpu(dr->root); root_obj.name_len = 0; /* Set root object date as 01 Jan 1987 00:00:00 */ root_obj.loadaddr = 0xfff0003f; @@ -470,13 +487,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) root_obj.size = ADFS_NEWDIR_SIZE; root_obj.attr = ADFS_NDA_DIRECTORY | ADFS_NDA_OWNER_READ | ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ; - root_obj.filetype = -1; /* * If this is a F+ disk with variable length directories, * get the root_size from the disc record. */ - if (asb->s_version) { + if (dr->format_version) { root_obj.size = le32_to_cpu(dr->root_size); asb->s_dir = &adfs_fplus_dir_ops; asb->s_namelen = ADFS_FPLUS_NAME_LEN; @@ -505,6 +521,11 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent) } return 0; +error_badfs: + if (!silent) + adfs_msg(sb, KERN_ERR, + "error: can't find an ADFS filesystem on dev %s.", + sb->s_id); error_free_bh: brelse(bh); error: