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[readdir] convert jffs2

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-17 18:08:49 -04:00
parent 6f7f231e7b
commit 0312fa7ccd
1 changed files with 16 additions and 36 deletions
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52
fs/jffs2/dir.c
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@ -22,7 +22,7 @@
#include <linux/time.h> #include <linux/time.h>
#include "nodelist.h" #include "nodelist.h"
static int jffs2_readdir (struct file *, void *, filldir_t); static int jffs2_readdir (struct file *, struct dir_context *);
static int jffs2_create (struct inode *,struct dentry *,umode_t, static int jffs2_create (struct inode *,struct dentry *,umode_t,
bool); bool);
@ -40,7 +40,7 @@ static int jffs2_rename (struct inode *, struct dentry *,
const struct file_operations jffs2_dir_operations = const struct file_operations jffs2_dir_operations =
{ {
.read = generic_read_dir, .read = generic_read_dir,
.readdir = jffs2_readdir, .iterate = jffs2_readdir,
.unlocked_ioctl=jffs2_ioctl, .unlocked_ioctl=jffs2_ioctl,
.fsync = jffs2_fsync, .fsync = jffs2_fsync,
.llseek = generic_file_llseek, .llseek = generic_file_llseek,
@ -114,60 +114,40 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
/***********************************************************************/ /***********************************************************************/
static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir) static int jffs2_readdir(struct file *file, struct dir_context *ctx)
{ {
struct jffs2_inode_info *f; struct inode *inode = file_inode(file);
struct inode *inode = file_inode(filp); struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_full_dirent *fd; struct jffs2_full_dirent *fd;
unsigned long offset, curofs; unsigned long curofs = 1;
jffs2_dbg(1, "jffs2_readdir() for dir_i #%lu\n", jffs2_dbg(1, "jffs2_readdir() for dir_i #%lu\n", inode->i_ino);
file_inode(filp)->i_ino);
f = JFFS2_INODE_INFO(inode); if (!dir_emit_dots(file, ctx))
return 0;
offset = filp->f_pos;
if (offset == 0) {
jffs2_dbg(1, "Dirent 0: \".\", ino #%lu\n", inode->i_ino);
if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
goto out;
offset++;
}
if (offset == 1) {
unsigned long pino = parent_ino(filp->f_path.dentry);
jffs2_dbg(1, "Dirent 1: \"..\", ino #%lu\n", pino);
if (filldir(dirent, "..", 2, 1, pino, DT_DIR) < 0)
goto out;
offset++;
}
curofs=1;
mutex_lock(&f->sem); mutex_lock(&f->sem);
for (fd = f->dents; fd; fd = fd->next) { for (fd = f->dents; fd; fd = fd->next) {
curofs++; curofs++;
/* First loop: curofs = 2; offset = 2 */ /* First loop: curofs = 2; pos = 2 */
if (curofs < offset) { if (curofs < ctx->pos) {
jffs2_dbg(2, "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n", jffs2_dbg(2, "Skipping dirent: \"%s\", ino #%u, type %d, because curofs %ld < offset %ld\n",
fd->name, fd->ino, fd->type, curofs, offset); fd->name, fd->ino, fd->type, curofs, (unsigned long)ctx->pos);
continue; continue;
} }
if (!fd->ino) { if (!fd->ino) {
jffs2_dbg(2, "Skipping deletion dirent \"%s\"\n", jffs2_dbg(2, "Skipping deletion dirent \"%s\"\n",
fd->name); fd->name);
offset++; ctx->pos++;
continue; continue;
} }
jffs2_dbg(2, "Dirent %ld: \"%s\", ino #%u, type %d\n", jffs2_dbg(2, "Dirent %ld: \"%s\", ino #%u, type %d\n",
offset, fd->name, fd->ino, fd->type); (unsigned long)ctx->pos, fd->name, fd->ino, fd->type);
if (filldir(dirent, fd->name, strlen(fd->name), offset, fd->ino, fd->type) < 0) if (!dir_emit(ctx, fd->name, strlen(fd->name), fd->ino, fd->type))
break; break;
offset++; ctx->pos++;
} }
mutex_unlock(&f->sem); mutex_unlock(&f->sem);
out:
filp->f_pos = offset;
return 0; return 0;
} }