nuttx/nuttx-mirror
1
2
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2025-01-13 08:38:38 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions

fs/nfs: support seek, fsync operation

Browse source 
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1 2023-07-25 16:15:56 +08:00 committed by Xiang Xiao
parent 4b966aa1e7
commit e4c015f0aa
1 changed files with 82 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

84
fs/nfs/nfs_vfsops.c
View file

@ -143,6 +143,8 @@ static ssize_t nfs_read(FAR struct file *filep, FAR char *buffer,
size_t buflen);
static ssize_t nfs_write(FAR struct file *filep, FAR const char *buffer,
size_t buflen);
static off_t nfs_seek(FAR struct file *filep, off_t offset, int whence);
static int nfs_sync(FAR struct file *filep);
static int nfs_dup(FAR const struct file *oldp, FAR struct file *newp);
static int nfs_fsinfo(FAR struct nfsmount *nmp);
static int nfs_fstat(FAR const struct file *filep, FAR struct stat *buf);
@ -196,12 +198,12 @@ const struct mountpt_operations g_nfs_operations =
nfs_close, /* close */
nfs_read, /* read */
nfs_write, /* write */
NULL, /* seek */
nfs_seek, /* seek */
NULL, /* ioctl */
NULL, /* mmap */
nfs_truncate, /* truncate */
NULL, /* sync */
nfs_sync, /* sync */
nfs_dup, /* dup */
nfs_fstat, /* fstat */
nfs_fchstat, /* fchstat */
@ -1213,6 +1215,84 @@ errout_with_lock:
return byteswritten > 0 ? byteswritten : ret;
}
/****************************************************************************
* Name: nfs_seek
*
* Returned Value:
* Returns the resulting offset location as measured in bytes from the
* beginning of the file.
*
****************************************************************************/
static off_t nfs_seek(FAR struct file *filep, off_t offset, int whence)
{
FAR struct nfsmount *nmp;
FAR struct nfsnode *np;
off_t ret;
/* Sanity checks */
DEBUGASSERT(filep->f_priv != NULL && filep->f_inode != NULL);
/* Recover our private data from the struct file instance */
nmp = (FAR struct nfsmount *)filep->f_inode->i_private;
np = (FAR struct nfsnode *)filep->f_priv;
DEBUGASSERT(nmp != NULL);
ret = nxmutex_lock(&nmp->nm_lock);
if (ret < 0)
{
return ret;
}
/* Map the offset according to the whence option */
switch (whence)
{
case SEEK_SET:
break;
case SEEK_CUR:
offset += filep->f_pos;
break;
case SEEK_END:
offset += np->n_size;
break;
default:
nxmutex_unlock(&nmp->nm_lock);
return -EINVAL;
}
if (offset >= 0)
{
filep->f_pos = offset;
}
else
{
ret = -EINVAL;
}
nxmutex_unlock(&nmp->nm_lock);
return ret < 0 ? ret : offset;
}
/****************************************************************************
* Name: nfs_sync
*
* Description:
* Synchronize the file state on disk to match internal, in memory state.
*
****************************************************************************/
static int nfs_sync(FAR struct file *filep)
{
return 0;
}
/****************************************************************************
* Name: nfs_dup
*