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efi_loader: file: support creating a directory

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In efi world, there is no obvious "mkdir" interface, instead, Open()
with EFI_FILE_MODE_CREATE in mode parameter and EFI_FILE_DIRECTORY
in attributes parameter creates a directory.

In this patch, efi_file_open() is extended so as to accept such
a combination of parameters and call u-boot's mkdir interface for
expected action.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
AKASHI Takahiro 2018-09-11 15:59:12 +09:00 • committed by Alexander Graf
parent 0349da5100
commit 5bc84a1303
1 changed files with 10 additions and 4 deletions
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14
lib/efi_loader/efi_file.c
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@ -131,7 +131,8 @@ static int sanitize_path(char *path)
* With windoze style backlashes, ofc. * With windoze style backlashes, ofc.
*/ */
static struct efi_file_handle *file_open(struct file_system *fs, static struct efi_file_handle *file_open(struct file_system *fs,
struct file_handle *parent, s16 *file_name, u64 mode) struct file_handle *parent, s16 *file_name, u64 mode,
u64 attributes)
{ {
struct file_handle *fh; struct file_handle *fh;
char f0[MAX_UTF8_PER_UTF16] = {0}; char f0[MAX_UTF8_PER_UTF16] = {0};
@ -174,7 +175,12 @@ static struct efi_file_handle *file_open(struct file_system *fs,
if (set_blk_dev(fh)) if (set_blk_dev(fh))
goto error; goto error;
if (!((mode & EFI_FILE_MODE_CREATE) || fs_exists(fh->path))) if ((mode & EFI_FILE_MODE_CREATE) &&
(attributes & EFI_FILE_DIRECTORY)) {
if (fs_mkdir(fh->path))
goto error;
} else if (!((mode & EFI_FILE_MODE_CREATE) ||
fs_exists(fh->path)))
goto error; goto error;
/* figure out if file is a directory: */ /* figure out if file is a directory: */
@ -200,7 +206,7 @@ static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *file,
EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", file, new_handle, file_name, EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", file, new_handle, file_name,
open_mode, attributes); open_mode, attributes);
*new_handle = file_open(fh->fs, fh, file_name, open_mode); *new_handle = file_open(fh->fs, fh, file_name, open_mode, attributes);
if (!*new_handle) if (!*new_handle)
return EFI_EXIT(EFI_NOT_FOUND); return EFI_EXIT(EFI_NOT_FOUND);
@ -601,7 +607,7 @@ efi_open_volume(struct efi_simple_file_system_protocol *this,
EFI_ENTRY("%p, %p", this, root); EFI_ENTRY("%p, %p", this, root);
*root = file_open(fs, NULL, NULL, 0); *root = file_open(fs, NULL, NULL, 0, 0);
return EFI_EXIT(EFI_SUCCESS); return EFI_EXIT(EFI_SUCCESS);
} }