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UBIFS: implement readlink entry point 

Implement the readlink entry point for future use by the DA923RC.

Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Renaud Barbier 2014-01-29 11:06:51 +00:00 committed by Sascha Hauer
parent b99e853aff
commit 4a6c8b1e04
1 changed files with 38 additions and 0 deletions
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38
fs/ubifs/ubifs.c
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@ -24,6 +24,7 @@
*/
#include <common.h>
#include <malloc.h>
#include <driver.h>
#include <init.h>
#include <malloc.h>
@ -549,6 +550,42 @@ static int ubifs_stat(struct device_d *dev, const char *filename, struct stat *s
return 0;
}
static char *ubifs_symlink(struct inode *inode)
{
struct ubifs_inode *ui;
char *symlink;
ui = ubifs_inode(inode);
symlink = malloc(ui->data_len + 1);
memcpy(symlink, ui->data, ui->data_len);
symlink[ui->data_len] = '\0';
return symlink;
}
static int ubifs_readlink(struct device_d *dev, const char *pathname, char *buf,
size_t bufsz)
{
struct ubifs_priv *priv = dev->priv;
struct inode *inode;
char *symlink;
int len;
inode = ubifs_findfile(priv->sb, pathname);
if (!inode)
return -ENOENT;
symlink = ubifs_symlink(inode);
len = min(bufsz, strlen(symlink));
memcpy(buf, symlink, len);
free(symlink);
return 0;
}
static int ubifs_probe(struct device_d *dev)
{
struct fs_device_d *fsdev = dev_to_fs_device(dev);
@ -609,6 +646,7 @@ static struct fs_driver_d ubifs_driver = {
.readdir = ubifs_readdir,
.closedir = ubifs_closedir,
.stat = ubifs_stat,
.readlink = ubifs_readlink,
.type = filetype_ubifs,
.flags = 0,
.drv = {