leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fs/fat: implement opendir/readdir/closedir

Browse Source 
Implement the readdir interface using the directory iterators.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Łukasz Majewski <lukma@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rob Clark 2017-09-09 13:15:56 -04:00 committed by Tom Rini
parent 4bbcc965f9
commit 1f40366b31
1 changed files with 61 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
fs/fat/fat.c
View File

@ -14,6 +14,7 @@
#include <config.h>
#include <exports.h>
#include <fat.h>
#include <fs.h>
#include <asm/byteorder.h>
#include <part.h>
#include <malloc.h>
@ -1146,6 +1147,66 @@ int fat_read_file(const char *filename, void *buf, loff_t offset, loff_t len,
return ret;
}
typedef struct {
struct fs_dir_stream parent;
struct fs_dirent dirent;
fsdata fsdata;
fat_itr itr;
} fat_dir;
int fat_opendir(const char *filename, struct fs_dir_stream **dirsp)
{
fat_dir *dir = malloc(sizeof(*dir));
int ret;
if (!dir)
return -ENOMEM;
ret = fat_itr_root(&dir->itr, &dir->fsdata);
if (ret)
goto fail;
ret = fat_itr_resolve(&dir->itr, filename, TYPE_DIR);
if (ret)
goto fail;
*dirsp = (struct fs_dir_stream *)dir;
return 0;
fail:
free(dir);
return ret;
}
int fat_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp)
{
fat_dir *dir = (fat_dir *)dirs;
struct fs_dirent *dent = &dir->dirent;
if (!fat_itr_next(&dir->itr))
return -ENOENT;
memset(dent, 0, sizeof(*dent));
strcpy(dent->name, dir->itr.name);
if (fat_itr_isdir(&dir->itr)) {
dent->type = FS_DT_DIR;
} else {
dent->type = FS_DT_REG;
dent->size = FAT2CPU32(dir->itr.dent->size);
}
*dentp = dent;
return 0;
}
void fat_closedir(struct fs_dir_stream *dirs)
{
fat_dir *dir = (fat_dir *)dirs;
free(dir);
}
void fat_close(void)
{
}