a7y18lte-ubports/android_kernel_samsung_universal7885
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[readdir] convert nilfs2

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-16 14:36:14 -04:00
parent d55fea8ddb
commit 1616abe841
1 changed files with 18 additions and 30 deletions
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48
fs/nilfs2/dir.c
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@ -256,22 +256,18 @@ static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode)
de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
} }
static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir) static int nilfs_readdir(struct file *file, struct dir_context *ctx)
{ {
loff_t pos = filp->f_pos; loff_t pos = ctx->pos;
struct inode *inode = file_inode(filp); struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb; struct super_block *sb = inode->i_sb;
unsigned int offset = pos & ~PAGE_CACHE_MASK; unsigned int offset = pos & ~PAGE_CACHE_MASK;
unsigned long n = pos >> PAGE_CACHE_SHIFT; unsigned long n = pos >> PAGE_CACHE_SHIFT;
unsigned long npages = dir_pages(inode); unsigned long npages = dir_pages(inode);
/* unsigned chunk_mask = ~(nilfs_chunk_size(inode)-1); */ /* unsigned chunk_mask = ~(nilfs_chunk_size(inode)-1); */
unsigned char *types = NULL;
int ret;
if (pos > inode->i_size - NILFS_DIR_REC_LEN(1)) if (pos > inode->i_size - NILFS_DIR_REC_LEN(1))
goto success; return 0;
types = nilfs_filetype_table;
for ( ; n < npages; n++, offset = 0) { for ( ; n < npages; n++, offset = 0) {
char *kaddr, *limit; char *kaddr, *limit;
@ -281,9 +277,8 @@ static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (IS_ERR(page)) { if (IS_ERR(page)) {
nilfs_error(sb, __func__, "bad page in #%lu", nilfs_error(sb, __func__, "bad page in #%lu",
inode->i_ino); inode->i_ino);
filp->f_pos += PAGE_CACHE_SIZE - offset; ctx->pos += PAGE_CACHE_SIZE - offset;
ret = -EIO; return -EIO;
goto done;
} }
kaddr = page_address(page); kaddr = page_address(page);
de = (struct nilfs_dir_entry *)(kaddr + offset); de = (struct nilfs_dir_entry *)(kaddr + offset);
@ -293,35 +288,28 @@ static int nilfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (de->rec_len == 0) { if (de->rec_len == 0) {
nilfs_error(sb, __func__, nilfs_error(sb, __func__,
"zero-length directory entry"); "zero-length directory entry");
ret = -EIO;
nilfs_put_page(page); nilfs_put_page(page);
goto done; return -EIO;
} }
if (de->inode) { if (de->inode) {
int over; unsigned char t;
unsigned char d_type = DT_UNKNOWN;
if (types && de->file_type < NILFS_FT_MAX) if (de->file_type < NILFS_FT_MAX)
d_type = types[de->file_type]; t = nilfs_filetype_table[de->file_type];
else
t = DT_UNKNOWN;
offset = (char *)de - kaddr; if (!dir_emit(ctx, de->name, de->name_len,
over = filldir(dirent, de->name, de->name_len, le64_to_cpu(de->inode), t)) {
(n<<PAGE_CACHE_SHIFT) | offset,
le64_to_cpu(de->inode), d_type);
if (over) {
nilfs_put_page(page); nilfs_put_page(page);
goto success; return 0;
} }
} }
filp->f_pos += nilfs_rec_len_from_disk(de->rec_len); ctx->pos += nilfs_rec_len_from_disk(de->rec_len);
} }
nilfs_put_page(page); nilfs_put_page(page);
} }
return 0;
success:
ret = 0;
done:
return ret;
} }
/* /*
@ -678,7 +666,7 @@ not_empty:
const struct file_operations nilfs_dir_operations = { const struct file_operations nilfs_dir_operations = {
.llseek = generic_file_llseek, .llseek = generic_file_llseek,
.read = generic_read_dir, .read = generic_read_dir,
.readdir = nilfs_readdir, .iterate = nilfs_readdir,
.unlocked_ioctl = nilfs_ioctl, .unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT #ifdef CONFIG_COMPAT
.compat_ioctl = nilfs_compat_ioctl, .compat_ioctl = nilfs_compat_ioctl,