diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/Kconfig | 15 | ||||
| -rw-r--r-- | fs/Makefile | 2 | ||||
| -rw-r--r-- | fs/efi.c | 563 | ||||
| -rw-r--r-- | fs/efivarfs.c | 340 | ||||
| -rw-r--r-- | fs/fat/fat.c | 4 |
5 files changed, 922 insertions, 2 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 3724b34f9a..64fc1176a6 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -41,6 +41,21 @@ config FS_NFS bool prompt "nfs support" +config FS_EFI + depends on ARCH_EFI + bool + prompt "EFI filesystem support" + help + This filesystem driver provides access to the filesystems provided + by the EFI Firmware via the EFI Simple File System Protocol. + +config FS_EFIVARFS + depends on ARCH_EFI + bool + prompt "EFI variable filesystem support (efivarfs)" + help + This filesystem driver provides access to EFI variables. + source fs/fat/Kconfig source fs/ubifs/Kconfig diff --git a/fs/Makefile b/fs/Makefile index d3465edfa5..f5aae91a60 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -11,3 +11,5 @@ obj-$(CONFIG_FS_OMAP4_USBBOOT) += omap4_usbbootfs.o obj-$(CONFIG_FS_NFS) += nfs.o parseopt.o obj-$(CONFIG_FS_BPKFS) += bpkfs.o obj-$(CONFIG_FS_UIMAGEFS) += uimagefs.o +obj-$(CONFIG_FS_EFI) += efi.o +obj-$(CONFIG_FS_EFIVARFS) += efivarfs.o diff --git a/fs/efi.c b/fs/efi.c new file mode 100644 index 0000000000..f096f91f58 --- /dev/null +++ b/fs/efi.c @@ -0,0 +1,563 @@ +/* + * efi.c - EFI filesystem mirror driver + * + * Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <common.h> +#include <driver.h> +#include <init.h> +#include <malloc.h> +#include <fs.h> +#include <string.h> +#include <command.h> +#include <errno.h> +#include <linux/stat.h> +#include <xfuncs.h> +#include <fcntl.h> +#include <wchar.h> +#include <efi.h> +#include <mach/efi.h> +#include <mach/efi-device.h> + +/* Open modes */ +#define EFI_FILE_MODE_READ 0x0000000000000001 +#define EFI_FILE_MODE_WRITE 0x0000000000000002 +#define EFI_FILE_MODE_CREATE 0x8000000000000000 + +/* File attributes */ +#define EFI_FILE_READ_ONLY 0x0000000000000001 +#define EFI_FILE_HIDDEN 0x0000000000000002 +#define EFI_FILE_SYSTEM 0x0000000000000004 +#define EFI_FILE_RESERVIED 0x0000000000000008 +#define EFI_FILE_DIRECTORY 0x0000000000000010 +#define EFI_FILE_ARCHIVE 0x0000000000000020 +#define EFI_FILE_VALID_ATTR 0x0000000000000037 + +#define EFI_FILE_HANDLE_REVISION 0x00010000 +struct efi_file_handle { + uint64_t Revision; + efi_status_t(EFIAPI *open)(struct efi_file_handle *File, + struct efi_file_handle **NewHandle, s16 *FileName, + uint64_t OpenMode, uint64_t Attributes); + efi_status_t(EFIAPI *close)(struct efi_file_handle *File); + efi_status_t(EFIAPI *delete)(struct efi_file_handle *File); + efi_status_t(EFIAPI *read)(struct efi_file_handle *File, unsigned long *BufferSize, + void *Buffer); + efi_status_t(EFIAPI *write)(struct efi_file_handle *File, + unsigned long *BufferSize, void *Buffer); + efi_status_t(EFIAPI *get_position)(struct efi_file_handle *File, + uint64_t *Position); + efi_status_t(EFIAPI *set_position)(struct efi_file_handle *File, + uint64_t Position); + efi_status_t(EFIAPI *get_info)(struct efi_file_handle *File, + efi_guid_t *InformationType, unsigned long *BufferSize, + void *Buffer); + efi_status_t(EFIAPI *set_info)(struct efi_file_handle *File, + efi_guid_t *InformationType, unsigned long BufferSize, + void *Buffer); + efi_status_t(EFIAPI *flush)(struct efi_file_handle *File); +}; + +#define EFI_FILE_IO_INTERFACE_REVISION 0x00010000 + +struct efi_file_io_interface { + uint64_t Revision; + efi_status_t(EFIAPI *open_volume)( + struct efi_file_io_interface *This, + struct efi_file_handle **Root); +}; + +struct efi_file_info { + uint64_t Size; + uint64_t FileSize; + uint64_t PhysicalSize; + efi_time_t CreateTime; + efi_time_t LastAccessTime; + efi_time_t ModificationTime; + uint64_t Attribute; + s16 FileName[1]; +}; + +typedef unsigned short wchar_t; + +struct efifs_priv { + struct efi_file_handle *root_dir; + struct efi_file_io_interface *protocol; +}; + +struct efifs_file { + struct efi_file_handle *entry; +}; + +struct efifs_dir { + DIR dir; + struct efi_file_handle *entries; +}; + +static wchar_t *path_to_efi(const char *path) +{ + wchar_t *dst; + wchar_t *ret; + + if (!*path) + return strdup_char_to_wchar("\\"); + + dst = strdup_char_to_wchar(path); + if (!dst) + return NULL; + + ret = dst; + + while (*dst) { + if (*dst == '/') + *dst = '\\'; + dst++; + } + + return ret; +} + +static int efifs_create(struct device_d *dev, const char *pathname, mode_t mode) +{ + struct efifs_priv *priv = dev->priv; + wchar_t *efi_path = path_to_efi(pathname); + struct efi_file_handle *entry; + efi_status_t efiret; + + efiret = priv->root_dir->open(priv->root_dir, &entry, efi_path, + EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE, + 0ULL); + + free(efi_path); + + if (EFI_ERROR(efiret)) { + printf("%s %s: %s\n", __func__, pathname, efi_strerror(efiret)); + return -efi_errno(efiret); + } + + entry->close(entry); + + return 0; +} + +static int efifs_unlink(struct device_d *dev, const char *pathname) +{ + struct efifs_priv *priv = dev->priv; + wchar_t *efi_path = path_to_efi(pathname); + struct efi_file_handle *entry; + efi_status_t efiret; + + efiret = priv->root_dir->open(priv->root_dir, &entry, efi_path, + EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE, 0ULL); + + free(efi_path); + + if (EFI_ERROR(efiret)) + return -efi_errno(efiret); + + efiret = entry->delete(entry); + if (EFI_ERROR(efiret)) + return -efi_errno(efiret); + + return 0; +} + +static int efifs_mkdir(struct device_d *dev, const char *pathname) +{ + struct efifs_priv *priv = dev->priv; + wchar_t *efi_path = path_to_efi(pathname); + struct efi_file_handle *entry; + efi_status_t efiret; + + efiret = priv->root_dir->open(priv->root_dir, &entry, efi_path, + EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE, + EFI_FILE_DIRECTORY); + + free(efi_path); + + if (EFI_ERROR(efiret)) { + printf("%s %s: %s\n", __func__, pathname, efi_strerror(efiret)); + return -efi_errno(efiret); + } + + entry->close(entry); + + return 0; +} + +static int efifs_rmdir(struct device_d *dev, const char *pathname) +{ + return efifs_unlink(dev, pathname); +} + +static int efifs_open(struct device_d *dev, FILE *f, const char *filename) +{ + struct efifs_priv *priv = dev->priv; + efi_status_t efiret; + struct efifs_file *ufile; + wchar_t *efi_path = path_to_efi(filename); + struct efi_file_info *info; + unsigned long bufsize = 1024; + uint64_t efimode = EFI_FILE_MODE_READ; + int ret; + + ufile = xzalloc(sizeof(*ufile)); + + if (f->flags & O_ACCMODE) + efimode |= EFI_FILE_MODE_WRITE; + + efiret = priv->root_dir->open(priv->root_dir, &ufile->entry, efi_path, + efimode, 0ULL); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to Open %s: %s\n", __func__, + filename, efi_strerror(efiret)); + free(ufile); + return -efi_errno(efiret); + } + + free(efi_path); + + info = xzalloc(1024); + efiret = ufile->entry->get_info(ufile->entry, &efi_file_info_id, &bufsize, info); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to GetInfo %s: %s\n", __func__, + filename, efi_strerror(efiret)); + ret = -efi_errno(efiret); + goto out; + } + + f->size = info->FileSize; + + free(info); + f->inode = ufile; + + return 0; +out: + free(info); + free(ufile); + return ret; +} + +static int efifs_close(struct device_d *dev, FILE *f) +{ + struct efifs_file *ufile = f->inode; + + ufile->entry->close(ufile->entry); + + free(ufile); + + return 0; +} + +static int efifs_read(struct device_d *_dev, FILE *f, void *buf, size_t insize) +{ + struct efifs_file *ufile = f->inode; + efi_status_t efiret; + unsigned long bufsize = insize; + + efiret = ufile->entry->read(ufile->entry, &bufsize, buf); + if (EFI_ERROR(efiret)) { + return -efi_errno(efiret); + } + + return bufsize; +} + +static int efifs_write(struct device_d *_dev, FILE *f, const void *buf, size_t insize) +{ + struct efifs_file *ufile = f->inode; + efi_status_t efiret; + unsigned long bufsize = insize; + + efiret = ufile->entry->write(ufile->entry, &bufsize, (void *)buf); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to write: %s\n", __func__, efi_strerror(efiret)); + return -efi_errno(efiret); + } + + return bufsize; +} + +static loff_t efifs_lseek(struct device_d *dev, FILE *f, loff_t pos) +{ + struct efifs_file *ufile = f->inode; + efi_status_t efiret; + + f->pos = pos; + + efiret = ufile->entry->set_position(ufile->entry, pos); + if (EFI_ERROR(efiret)) { + return -efi_errno(efiret); + } + + return f->pos; +} + +static int efifs_truncate(struct device_d *dev, FILE *f, unsigned long size) +{ + struct efifs_file *ufile = f->inode; + efi_status_t efiret; + struct efi_file_info *info; + unsigned long bufsize = 1024; + int ret; + + info = xzalloc(1024); + + efiret = ufile->entry->get_info(ufile->entry, &efi_file_info_id, &bufsize, info); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to GetInfo: %s\n", __func__, efi_strerror(efiret)); + ret = -efi_errno(efiret); + goto out; + } + + if (size > info->FileSize) + return 0; + + info->FileSize = size; + + efiret = ufile->entry->set_info(ufile->entry, &efi_file_info_id, bufsize, info); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to SetInfo: %s\n", __func__, efi_strerror(efiret)); + ret = -efi_errno(efiret); + goto out; + } + + return 0; +out: + return ret; +} + +static DIR *efifs_opendir(struct device_d *dev, const char *pathname) +{ + struct efifs_priv *priv = dev->priv; + efi_status_t efiret; + struct efifs_dir *udir; + wchar_t *efi_path = path_to_efi(pathname); + + udir = xzalloc(sizeof(*udir)); + + efiret = priv->root_dir->open(priv->root_dir, &udir->entries, efi_path, EFI_FILE_MODE_READ, 0ULL); + if (EFI_ERROR(efiret)) { + free(udir); + return NULL; + } + + free(efi_path); + + return &udir->dir; +} + +static struct dirent *efifs_readdir(struct device_d *dev, DIR *dir) +{ + struct efifs_dir *udir = container_of(dir, struct efifs_dir, dir); + efi_status_t efiret; + unsigned long bufsize = 256; + s16 buf[256]; + struct efi_file_info *f; + + efiret = udir->entries->read(udir->entries, &bufsize, buf); + if (EFI_ERROR(efiret) || bufsize == 0) + return NULL; + + f = (struct efi_file_info *)buf; + + strcpy_wchar_to_char(dir->d.d_name, f->FileName); + + return &dir->d; +} + +static int efifs_closedir(struct device_d *dev, DIR *dir) +{ + struct efifs_dir *udir = container_of(dir, struct efifs_dir, dir); + + udir->entries->close(udir->entries); + + free(dir); + + return 0; +} + +static int efifs_stat(struct device_d *dev, const char *filename, struct stat *s) +{ + struct efifs_priv *priv = dev->priv; + wchar_t *efi_path; + efi_status_t efiret; + struct efi_file_handle *entry; + struct efi_file_info *info; + unsigned long bufsize = 1024; + int ret; + + info = xzalloc(1024); + + efi_path = path_to_efi(filename); + + efiret = priv->root_dir->open(priv->root_dir, &entry, efi_path, EFI_FILE_MODE_READ, 0ULL); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to Open %s: %s\n", __func__, filename, + efi_strerror(efiret)); + ret = -efi_errno(efiret); + goto out_free; + } + + efiret = entry->get_info(entry, &efi_file_info_id, &bufsize, info); + if (EFI_ERROR(efiret)) { + pr_err("%s: unable to GetInfo %s: %s\n", __func__, filename, + efi_strerror(efiret)); + ret = -efi_errno(efiret); + goto out; + } + + s->st_size = info->FileSize; + s->st_mode = 00555; + + if (!info->Attribute & EFI_FILE_READ_ONLY) + s->st_mode |= 00222; + + if (info->Attribute & EFI_FILE_DIRECTORY) + s->st_mode |= S_IFDIR; + else + s->st_mode |= S_IFREG; + + ret = 0; +out: + entry->close(entry); +out_free: + free(efi_path); + free(info); + + return ret; +} + +static int efifs_symlink(struct device_d *dev, const char *pathname, + const char *newpath) +{ + return -EROFS; +} + +static int efifs_readlink(struct device_d *dev, const char *pathname, + char *buf, size_t bufsiz) +{ + return -ENOENT; +} + +static int efifs_probe(struct device_d *dev) +{ + struct fs_device_d *fsdev = dev_to_fs_device(dev); + struct efifs_priv *priv; + efi_status_t efiret; + struct efi_file_handle *file; + struct device_d *efi = get_device_by_name(fsdev->backingstore); + struct efi_device *udev = container_of(efi, struct efi_device, dev); + + priv = xzalloc(sizeof(struct efifs_priv)); + priv->protocol = udev->protocol; + dev->priv = priv; + dev->parent = &udev->dev; + + efiret = priv->protocol->open_volume(priv->protocol, &file); + if (EFI_ERROR(efiret)) { + dev_err(dev, "failed to open volume: %s\n", efi_strerror(efiret)); + return -efi_errno(efiret); + } + + priv->root_dir = file; + + return 0; +} + +static void efifs_remove(struct device_d *dev) +{ + free(dev->priv); +} + +static struct fs_driver_d efifs_driver = { + .create = efifs_create, + .unlink = efifs_unlink, + .open = efifs_open, + .close = efifs_close, + .truncate = efifs_truncate, + .read = efifs_read, + .write = efifs_write, + .lseek = efifs_lseek, + .mkdir = efifs_mkdir, + .rmdir = efifs_rmdir, + .opendir = efifs_opendir, + .readdir = efifs_readdir, + .closedir = efifs_closedir, + .stat = efifs_stat, + .symlink = efifs_symlink, + .readlink = efifs_readlink, + .drv = { + .probe = efifs_probe, + .remove = efifs_remove, + .name = "efifs", + } +}; + +static int efifs_init(void) +{ + return register_fs_driver(&efifs_driver); +} + +coredevice_initcall(efifs_init); + +static int index; + +int efi_fs_probe(struct efi_device *efidev) +{ + char *path, *device; + int ret; + struct efi_file_io_interface *volume; + + if (efi_loaded_image) + BS->handle_protocol(efi_loaded_image->device_handle, + &efi_simple_file_system_protocol_guid, (void*)&volume); + + if (efidev->protocol == volume) + path = xstrdup("/boot"); + else + path = asprintf("/efi%d", index); + device = asprintf("%s", dev_name(&efidev->dev)); + + ret = make_directory(path); + if (ret) + goto out; + + ret = mount(device, "efifs", path, NULL); + if (ret) + goto out; + + index++; + + dev_info(&efidev->dev, "mounted on %s\n", path); + + ret = 0; +out: + free(path); + free(device); + + return ret; +} + +static struct efi_driver efi_fs_driver = { + .driver = { + .name = "efi-fs", + }, + .probe = efi_fs_probe, + .guid = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID, +}; +device_efi_driver(efi_fs_driver); diff --git a/fs/efivarfs.c b/fs/efivarfs.c new file mode 100644 index 0000000000..58c637ef19 --- /dev/null +++ b/fs/efivarfs.c @@ -0,0 +1,340 @@ +/* + * ramfs.c - a malloc based filesystem + * + * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <common.h> +#include <driver.h> +#include <init.h> +#include <malloc.h> +#include <fs.h> +#include <string.h> +#include <errno.h> +#include <linux/stat.h> +#include <xfuncs.h> +#include <fcntl.h> +#include <efi.h> +#include <wchar.h> +#include <linux/err.h> +#include <linux/ctype.h> +#include <mach/efi.h> +#include <mach/efi-device.h> + +struct efivarfs_priv { + struct efi_file_handle *root_dir; + struct efi_file_io_interface *protocol; +}; + +static int char_to_nibble(char c) +{ + int ret = tolower(c); + + return ret <= '9' ? ret - '0' : ret - 'a' + 10; +} + +static int read_byte_str(const char *str, u8 *out) +{ + if (!isxdigit(*str) || !isxdigit(*(str + 1))) + return -EINVAL; + + *out = (char_to_nibble(*str) << 4) | char_to_nibble(*(str + 1)); + + return 0; +} + +int efi_guid_parse(const char *str, efi_guid_t *guid) +{ + int i, ret; + u8 idx[] = { 3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15 }; + + for (i = 0; i < 16; i++) { + ret = read_byte_str(str, &guid->b[idx[i]]); + if (ret) + return ret; + str += 2; + + switch (i) { + case 3: + case 5: + case 7: + case 9: + if (*str != '-') + return -EINVAL; + str++; + break; + } + } + + return 0; +} + +static int efivarfs_parse_filename(const char *filename, efi_guid_t *vendor, s16 **name) +{ + int len, ret; + const char *guidstr; + s16 *varname; + int i; + + if (*filename == '/') + filename++; + + len = strlen(filename); + + if (len < sizeof("-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")) + return -EINVAL; + + guidstr = filename + len - sizeof("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"); + if (*guidstr != '-') + return -EINVAL; + + guidstr++; + + ret = efi_guid_parse(guidstr, vendor); + + varname = xzalloc((guidstr - filename) * sizeof(s16)); + + for (i = 0; i < guidstr - filename - 1; i++) + varname[i] = filename[i]; + + *name = varname; + + return 0; +} + +struct efivars_file { + void *buf; + unsigned long size; + efi_guid_t vendor; + s16 *name; +}; + +static int efivarfs_open(struct device_d *dev, FILE *f, const char *filename) +{ + struct efivars_file *efile; + efi_status_t efiret; + int ret; + uint32_t attributes; + + efile = xzalloc(sizeof(*efile)); + + ret = efivarfs_parse_filename(filename, &efile->vendor, &efile->name); + if (ret) + return -ENOENT; + + efiret = RT->get_variable(efile->name, &efile->vendor, &attributes, &efile->size, NULL); + if (EFI_ERROR(efiret) && efiret != EFI_BUFFER_TOO_SMALL) { + ret = -efi_errno(efiret); + goto out; + } + + efile->buf = malloc(efile->size + sizeof(uint32_t)); + if (!efile->buf) { + ret = -ENOMEM; + goto out; + } + + efiret = RT->get_variable(efile->name, &efile->vendor, NULL, &efile->size, + efile->buf + sizeof(uint32_t)); + if (EFI_ERROR(efiret)) { + ret = -efi_errno(efiret); + goto out; + } + + *(uint32_t *)efile->buf = attributes; + + f->size = efile->size + sizeof(uint32_t); + f->inode = efile; + + return 0; + +out: + free(efile->buf); + free(efile); + + return ret; +} + +static int efivarfs_close(struct device_d *dev, FILE *f) +{ + struct efivars_file *efile = f->inode; + + free(efile->buf); + free(efile); + + return 0; +} + +static int efivarfs_read(struct device_d *_dev, FILE *f, void *buf, size_t insize) +{ + struct efivars_file *efile = f->inode; + + memcpy(buf, efile->buf + f->pos, insize); + + return insize; +} + +static loff_t efivarfs_lseek(struct device_d *dev, FILE *f, loff_t pos) +{ + f->pos = pos; + + return f->pos; +} + +struct efivarfs_dir_entry { + char *name; + struct efivarfs_dir_entry *next; +}; + +struct efivarfs_dir { + struct efivarfs_dir_entry *first; + struct efivarfs_dir_entry *current; + DIR dir; +}; + +static DIR *efivarfs_opendir(struct device_d *dev, const char *pathname) +{ + efi_status_t efiret; + efi_guid_t vendor; + s16 name[1024]; + struct efivarfs_dir *edir; + unsigned long size; + unsigned char *name8; + + name[0] = 0; + + edir = xzalloc(sizeof(*edir)); + + while (1) { + struct efivarfs_dir_entry *entry; + + size = sizeof(name); + efiret = RT->get_next_variable(&size, name, &vendor); + if (EFI_ERROR(efiret)) + break; + + entry = xzalloc(sizeof(*entry)); + name8 = strdup_wchar_to_char(name); + + entry->name = asprintf("%s-%pUl", name8, &vendor); + + free(name8); + + if (!edir->first) + edir->first = entry; + + if (edir->current) + edir->current->next = entry; + + edir->current = entry; + } + + edir->current = edir->first; + + return &edir->dir; +} + +static struct dirent *efivarfs_readdir(struct device_d *dev, DIR *dir) +{ + struct efivarfs_dir *edir = container_of(dir, struct efivarfs_dir, dir); + + if (!edir->current) + return NULL; + + strcpy(dir->d.d_name, edir->current->name); + + edir->current = edir->current->next; + + return &dir->d; +} + +static int efivarfs_closedir(struct device_d *dev, DIR *dir) +{ + struct efivarfs_dir *edir = container_of(dir, struct efivarfs_dir, dir); + struct efivarfs_dir_entry *entry; + + entry = edir->first; + + while (entry) { + struct efivarfs_dir_entry *tmp; + free(entry->name); + tmp = entry->next; + free(entry); + entry = tmp; + } + + free(edir); + + return 0; +} + +static int efivarfs_stat(struct device_d *dev, const char *filename, struct stat *s) +{ + efi_guid_t vendor; + s16 *name; + efi_status_t efiret; + unsigned long size = 0; + int ret; + + ret = efivarfs_parse_filename(filename, &vendor, &name); + if (ret) + return -ENOENT; + + efiret = RT->get_variable(name, &vendor, NULL, &size, NULL); + + free(name); + + if (EFI_ERROR(efiret) && efiret != EFI_BUFFER_TOO_SMALL) + return -efi_errno(efiret); + + s->st_mode = 00666 | S_IFREG; + s->st_size = size; + + return 0; +} + +static int efivarfs_probe(struct device_d *dev) +{ + return 0; +} + +static void efivarfs_remove(struct device_d *dev) +{ + free(dev->priv); +} + +static struct fs_driver_d efivarfs_driver = { + .open = efivarfs_open, + .close = efivarfs_close, + .read = efivarfs_read, + .lseek = efivarfs_lseek, + .opendir = efivarfs_opendir, + .readdir = efivarfs_readdir, + .closedir = efivarfs_closedir, + .stat = efivarfs_stat, + .drv = { + .probe = efivarfs_probe, + .remove = efivarfs_remove, + .name = "efivarfs", + } +}; + +static int efivarfs_init(void) +{ + return register_fs_driver(&efivarfs_driver); +} + +coredevice_initcall(efivarfs_init); diff --git a/fs/fat/fat.c b/fs/fat/fat.c index e65ef585a2..f8094d0608 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -167,7 +167,7 @@ static int fat_write(struct device_d *_dev, FILE *f, const void *buf, size_t ins ret = f_write(f_file, buf, insize, &outsize); - debug("%s: %d %d %d %p\n", __func__, ret, insize, outsize, f_file); + debug("%s: %d %zd %d %p\n", __func__, ret, insize, outsize, f_file); if (ret) return ret; @@ -260,7 +260,7 @@ static int fat_read(struct device_d *_dev, FILE *f, void *buf, size_t insize) ret = f_read(f_file, buf, insize, &outsize); - debug("%s: %d %d %d %p\n", __func__, ret, insize, outsize, f_file); + debug("%s: %d %zd %d %p\n", __func__, ret, insize, outsize, f_file); if (ret) return ret; |