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smartfs: Add support for fstat().

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This commit is contained in:
Gregory Nutt
2017-02-14 10:30:11 -06:00
parent c5df283822
commit ef8d207118
1 changed files with 81 additions and 40 deletions
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fs/smartfs/smartfs_smart.c
+80 -39
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@@ -110,6 +110,9 @@ static int smartfs_rmdir(FAR struct inode *mountpt,
static int smartfs_rename(FAR struct inode *mountpt, static int smartfs_rename(FAR struct inode *mountpt,
FAR const char *oldrelpath, FAR const char *oldrelpath,
const char *newrelpath); const char *newrelpath);
static void smartfs_stat_common(FAR struct smartfs_mountpt_s *fs,
FAR struct smartfs_entry_s *entry,
FAR struct stat *buf);
static int smartfs_stat(FAR struct inode *mountpt, static int smartfs_stat(FAR struct inode *mountpt,
FAR const char *relpath, FAR const char *relpath,
FAR struct stat *buf); FAR struct stat *buf);
@@ -200,7 +203,7 @@ static int smartfs_open(FAR struct file *filep, const char *relpath,
/* Locate the directory entry for this path */ /* Locate the directory entry for this path */
sf = (struct smartfs_ofile_s *) kmm_malloc(sizeof *sf); sf = (struct smartfs_ofile_s *)kmm_malloc(sizeof *sf);
if (sf == NULL) if (sf == NULL)
{ {
ret = -ENOMEM; ret = -ENOMEM;
@@ -210,7 +213,7 @@ static int smartfs_open(FAR struct file *filep, const char *relpath,
/* Allocate a sector buffer if CRC enabled in the MTD layer */ /* Allocate a sector buffer if CRC enabled in the MTD layer */
#ifdef CONFIG_SMARTFS_USE_SECTOR_BUFFER #ifdef CONFIG_SMARTFS_USE_SECTOR_BUFFER
sf->buffer = (uint8_t *) kmm_malloc(fs->fs_llformat.availbytes); sf->buffer = (uint8_t *)kmm_malloc(fs->fs_llformat.availbytes);
if (sf->buffer == NULL) if (sf->buffer == NULL)
{ {
/* Error ... no memory */ /* Error ... no memory */
@@ -1278,8 +1281,30 @@ static int smartfs_dup(FAR const struct file *oldp, FAR struct file *newp)
static int smartfs_fstat(FAR const struct file *filep, FAR struct stat *buf) static int smartfs_fstat(FAR const struct file *filep, FAR struct stat *buf)
{ {
#warning Missing logic FAR struct inode *inode;
return -ENOSYS; FAR struct smartfs_mountpt_s *fs;
FAR struct smartfs_ofile_s *sf;
DEBUGASSERT(filep != NULL && buf != NULL);
/* Recover our private data from the struct file instance */
DEBUGASSERT(filep->f_priv != NULL && filep->f_inode != NULL);
sf = filep->f_priv;
inode = filep->f_inode;
fs = inode->i_private;
DEBUGASSERT(fs != NULL);
/* Take the semaphore */
smartfs_semtake(fs);
/* Return information about the directory entry in the stat structure */
smartfs_stat_common(fs, &sf->entry, buf);
smartfs_semgive(fs);
return OK;
} }
/**************************************************************************** /****************************************************************************
@@ -2040,19 +2065,61 @@ errout_with_semaphore:
} }
/**************************************************************************** /****************************************************************************
* Name: smartfs_stat * Name: smartfs_stat_common
* *
* Description: Return information about a file or directory * Description:
* Return information about a directory entry
* *
****************************************************************************/ ****************************************************************************/
static int smartfs_stat(struct inode *mountpt, const char *relpath, struct stat *buf) static void smartfs_stat_common(FAR struct smartfs_mountpt_s *fs,
FAR struct smartfs_entry_s *entry,
FAR struct stat *buf)
{ {
struct smartfs_mountpt_s *fs; /* Initialize the stat structure */
struct smartfs_entry_s entry;
int ret; memset(buf, 0, sizeof(struct stat));
if (entry->firstsector == fs->fs_rootsector)
{
/* It's directory name of the mount point */
buf->st_mode = S_IFDIR | S_IROTH | S_IRGRP | S_IRUSR | S_IWOTH |
S_IWGRP | S_IWUSR;
}
else
{
buf->st_mode = entry->flags & 0xFFF;
if ((entry->flags & SMARTFS_DIRENT_TYPE) == SMARTFS_DIRENT_TYPE_DIR)
{
buf->st_mode |= S_IFDIR;
}
else
{
buf->st_mode |= S_IFREG;
}
buf->st_size = entry->datlen;
buf->st_blksize = fs->fs_llformat.availbytes;
buf->st_blocks = (buf->st_size + buf->st_blksize - 1) / buf->st_blksize;
}
}
/****************************************************************************
* Name: smartfs_stat
*
* Description:
* Return information about a file or directory
*
****************************************************************************/
static int smartfs_stat(FAR struct inode *mountpt, FAR const char *relpath,
FAR struct stat *buf)
{
FAR struct smartfs_mountpt_s *fs;
FAR struct smartfs_entry_s entry;
FAR const char *filename;
uint16_t parentdirsector; uint16_t parentdirsector;
const char *filename; int ret;
/* Sanity checks */ /* Sanity checks */
@@ -2074,35 +2141,9 @@ static int smartfs_stat(struct inode *mountpt, const char *relpath, struct stat
goto errout_with_semaphore; goto errout_with_semaphore;
} }
/* Initialize the stat structure */ /* Return information about the directory entry in the stat structure */
memset(buf, 0, sizeof(struct stat));
if (entry.firstsector == fs->fs_rootsector)
{
/* It's directory name of the mount point */
buf->st_mode = S_IFDIR | S_IROTH | S_IRGRP | S_IRUSR | S_IWOTH |
S_IWGRP | S_IWUSR;
ret = OK;
goto errout_with_semaphore;
}
buf->st_mode = entry.flags & 0xFFF;
if ((entry.flags & SMARTFS_DIRENT_TYPE) == SMARTFS_DIRENT_TYPE_DIR)
{
buf->st_mode |= S_IFDIR;
}
else
{
buf->st_mode |= S_IFREG;
}
buf->st_size = entry.datlen;
buf->st_blksize = fs->fs_llformat.availbytes;
buf->st_blocks = (buf->st_size + buf->st_blksize - 1) / buf->st_blksize;
buf->st_atime = 0;
buf->st_ctime = 0;
smartfs_stat_common(fs, &entry, buf);
ret = OK; ret = OK;
errout_with_semaphore: errout_with_semaphore: