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nxdumptool/source/devoptab/nxdt_romfs_dev.c

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Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/*
* nxdt_romfs_dev.c
*
* Loosely based on romfs_dev.c from libnx, et al.
*
[skip ci] Update copyright year.
2024-04-12 10:47:36 +01:00
* Copyright (c) 2020-2024, DarkMatterCore <pabloacurielz@gmail.com>.
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nxdumptool 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "nxdt_utils.h"
#include "nxdt_devoptab.h"
#include "ro_dev.h"
/* Helper macros. */
#define ROMFS_DEV_INIT_VARS DEVOPTAB_INIT_VARS(RomFileSystemContext)
#define ROMFS_DEV_INIT_FILE_VARS DEVOPTAB_INIT_FILE_VARS(RomFileSystemContext, RomFileSystemFileState)
#define ROMFS_DEV_INIT_DIR_VARS DEVOPTAB_INIT_DIR_VARS(RomFileSystemContext, RomFileSystemDirectoryState)
#define ROMFS_DEV_INIT_FS_ACCESS DEVOPTAB_DECL_FS_CTX(RomFileSystemContext)
#define ROMFS_FILE_INODE(file) ((u64)(file - fs_ctx->file_table) + (fs_ctx->dir_table_size / 4))
#define ROMFS_DIR_INODE(dir) (u64)(dir - fs_ctx->dir_table)
/* Type definitions. */
typedef struct {
RomFileSystemFileEntry *file_entry; ///< RomFS file entry metadata.
u64 data_offset; ///< Current offset within RomFS file entry data.
} RomFileSystemFileState;
typedef struct {
RomFileSystemDirectoryEntry *dir_entry; ///< RomFS directory entry metadata.
u8 state; ///< 0: "." entry; 1: ".." entry; 2: actual RomFS entry.
u64 cur_dir_offset; ///< Offset to current child directory entry within the RomFS directory table.
u64 cur_file_offset; ///< Offset to current child file entry within the RomFS file table.
} RomFileSystemDirectoryState;
/* Function prototypes. */
static int romfsdev_open(struct _reent *r, void *fd, const char *path, int flags, int mode);
static int romfsdev_close(struct _reent *r, void *fd);
static ssize_t romfsdev_read(struct _reent *r, void *fd, char *ptr, size_t len);
static off_t romfsdev_seek(struct _reent *r, void *fd, off_t pos, int dir);
static int romfsdev_fstat(struct _reent *r, void *fd, struct stat *st);
static int romfsdev_stat(struct _reent *r, const char *file, struct stat *st);
static DIR_ITER* romfsdev_diropen(struct _reent *r, DIR_ITER *dirState, const char *path);
static int romfsdev_dirreset(struct _reent *r, DIR_ITER *dirState);
static int romfsdev_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
static int romfsdev_dirclose(struct _reent *r, DIR_ITER *dirState);
static int romfsdev_statvfs(struct _reent *r, const char *path, struct statvfs *buf);
static const char *romfsdev_get_truncated_path(struct _reent *r, const char *path);
static void romfsdev_fill_file_stat(struct stat *st, const RomFileSystemContext *fs_ctx, const RomFileSystemFileEntry *file_entry, time_t mount_time);
static void romfsdev_fill_dir_stat(struct stat *st, RomFileSystemContext *fs_ctx, RomFileSystemDirectoryEntry *dir_entry, time_t mount_time);
static nlink_t romfsdev_get_dir_nlink(RomFileSystemContext *ctx, RomFileSystemDirectoryEntry *dir_entry);
/* Global variables. */
static const devoptab_t romfsdev_devoptab = {
.name = NULL,
.structSize = sizeof(RomFileSystemFileState),
.open_r = romfsdev_open,
.close_r = romfsdev_close,
.write_r = rodev_write, ///< Not supported by RomFS sections.
.read_r = romfsdev_read,
.seek_r = romfsdev_seek,
.fstat_r = romfsdev_fstat,
.stat_r = romfsdev_stat,
.link_r = rodev_link, ///< Not supported by RomFS sections.
.unlink_r = rodev_unlink, ///< Not supported by RomFS sections.
.chdir_r = rodev_chdir, ///< No need to deal with cwd shenanigans, so we won't support it.
.rename_r = rodev_rename, ///< Not supported by RomFS sections.
.mkdir_r = rodev_mkdir, ///< Not supported by RomFS sections.
.dirStateSize = sizeof(RomFileSystemDirectoryState),
.diropen_r = romfsdev_diropen,
.dirreset_r = romfsdev_dirreset,
.dirnext_r = romfsdev_dirnext,
.dirclose_r = romfsdev_dirclose,
.statvfs_r = romfsdev_statvfs,
.ftruncate_r = rodev_ftruncate, ///< Not supported by RomFS sections.
.fsync_r = rodev_fsync, ///< Not supported by RomFS sections.
.deviceData = NULL,
.chmod_r = rodev_chmod, ///< Not supported by RomFS sections.
.fchmod_r = rodev_fchmod, ///< Not supported by RomFS sections.
.rmdir_r = rodev_rmdir, ///< Not supported by RomFS sections.
.lstat_r = romfsdev_stat, ///< Symlinks aren't supported, so we'll just alias lstat() to stat().
.utimes_r = rodev_utimes, ///< Not supported by RomFS sections.
.fpathconf_r = rodev_fpathconf, ///< Not supported by RomFS sections.
.pathconf_r = rodev_pathconf, ///< Not supported by RomFS sections.
.symlink_r = rodev_symlink, ///< Not supported by RomFS sections.
.readlink_r = rodev_readlink ///< Not supported by RomFS sections.
};
const devoptab_t *romfsdev_get_devoptab()
{
return &romfsdev_devoptab;
}
static int romfsdev_open(struct _reent *r, void *fd, const char *path, int flags, int mode)
{
NX_IGNORE_ARG(mode);
ROMFS_DEV_INIT_FILE_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Validate input. */
if (!file || (flags & (O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC | O_EXCL))) DEVOPTAB_SET_ERROR_AND_EXIT(EROFS);
/* Get truncated path. */
if (!(path = romfsdev_get_truncated_path(r, path))) DEVOPTAB_EXIT;
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Opening \"%s:%s\" with flags 0x%X.", dev_ctx->name, path, flags);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Reset file descriptor. */
memset(file, 0, sizeof(RomFileSystemFileState));
/* Get information about the requested RomFS file entry. */
if (!(file->file_entry = romfsGetFileEntryByPath(fs_ctx, path))) DEVOPTAB_SET_ERROR(ENOENT);
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static int romfsdev_close(struct _reent *r, void *fd)
{
ROMFS_DEV_INIT_FILE_VARS;
/* Sanity check. */
if (!file) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Closing file \"%.*s\" from \"%s:\".", (int)file->file_entry->name_length, file->file_entry->name, dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Reset file descriptor. */
memset(file, 0, sizeof(RomFileSystemFileState));
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static ssize_t romfsdev_read(struct _reent *r, void *fd, char *ptr, size_t len)
{
ROMFS_DEV_INIT_FILE_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Sanity check. */
if (!file || !ptr || !len) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
/*LOG_MSG_DEBUG("Reading 0x%lX byte(s) at offset 0x%lX from file \"%.*s\" in \"%s:\".", len, file->data_offset, (int)file->file_entry->name_length, file->file_entry->name, \
dev_ctx->name);*/
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Read file data. */
if (!romfsReadFileEntryData(fs_ctx, file->file_entry, ptr, len, file->data_offset)) DEVOPTAB_SET_ERROR_AND_EXIT(EIO);
/* Adjust offset. */
file->data_offset += len;
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT((ssize_t)len);
}
static off_t romfsdev_seek(struct _reent *r, void *fd, off_t pos, int dir)
{
off_t offset = 0;
ROMFS_DEV_INIT_FILE_VARS;
/* Sanity check. */
if (!file) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
/* Find the offset to seek from. */
switch(dir)
{
case SEEK_SET: /* Set absolute position relative to zero (start offset). */
break;
case SEEK_CUR: /* Set position relative to the current position. */
offset = (off_t)file->data_offset;
break;
case SEEK_END: /* Set position relative to EOF. */
offset = (off_t)file->file_entry->size;
break;
default: /* Invalid option. */
DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
}
/* Don't allow negative seeks beyond the beginning of file. */
if (pos < 0 && offset < -pos) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
/* Calculate actual offset. */
offset += pos;
/* Don't allow positive seeks beyond the end of file. */
if (offset > (off_t)file->file_entry->size) DEVOPTAB_SET_ERROR_AND_EXIT(EOVERFLOW);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Seeking to offset 0x%lX from file \"%.*s\" in \"%s:\".", offset, (int)file->file_entry->name_length, file->file_entry->name, dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Adjust offset. */
file->data_offset = (u64)offset;
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(offset);
}
static int romfsdev_fstat(struct _reent *r, void *fd, struct stat *st)
{
ROMFS_DEV_INIT_FILE_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Sanity check. */
if (!file || !st) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Getting stats for file \"%.*s\" in \"%s:\".", (int)file->file_entry->name_length, file->file_entry->name, dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Fill stat info. */
romfsdev_fill_file_stat(st, fs_ctx, file->file_entry, dev_ctx->mount_time);
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static int romfsdev_stat(struct _reent *r, const char *file, struct stat *st)
{
RomFileSystemFileEntry *file_entry = NULL;
ROMFS_DEV_INIT_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Sanity check. */
if (!st) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
/* Get truncated path. */
if (!(file = romfsdev_get_truncated_path(r, file))) DEVOPTAB_EXIT;
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Getting file stats for \"%s:%s\".", dev_ctx->name, file);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Get information about the requested RomFS file entry. */
romfs: use hash buckets for FS entry lookups. * romfs: add hash bucket fields to RomFileSystemContext struct. * romfs: remove current offset fields from RomFileSystemContext struct and all functions that relied on them. * romfs: add romfsCalculateEntryHash(). * romfs: update romfsInitializeContext() to also load file/directory hash buckets. * romfs: update romfsGetTotalDataSize() to make up for the removed functions. * romfs: update romfsGetChild*EntryByName() functions to use hash bucket lookups. Other changes include: * devoptab: add missing exit macros to some FS operations across all interfaces. * poc: update extractedRomFsReadThreadFunc() to make up for the removed RomFS functions.
2023-12-22 11:20:27 +00:00
if (!(file_entry = romfsGetFileEntryByPath(fs_ctx, file))) DEVOPTAB_SET_ERROR_AND_EXIT(ENOENT);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Fill stat info. */
romfsdev_fill_file_stat(st, fs_ctx, file_entry, dev_ctx->mount_time);
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static DIR_ITER *romfsdev_diropen(struct _reent *r, DIR_ITER *dirState, const char *path)
{
DIR_ITER *ret = NULL;
ROMFS_DEV_INIT_DIR_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Get truncated path. */
if (!(path = romfsdev_get_truncated_path(r, path))) DEVOPTAB_EXIT;
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Opening directory \"%s:%s\".", dev_ctx->name, path);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Reset directory state. */
memset(dir, 0, sizeof(RomFileSystemDirectoryState));
/* Get information about the requested RomFS directory entry. */
romfs: use hash buckets for FS entry lookups. * romfs: add hash bucket fields to RomFileSystemContext struct. * romfs: remove current offset fields from RomFileSystemContext struct and all functions that relied on them. * romfs: add romfsCalculateEntryHash(). * romfs: update romfsInitializeContext() to also load file/directory hash buckets. * romfs: update romfsGetTotalDataSize() to make up for the removed functions. * romfs: update romfsGetChild*EntryByName() functions to use hash bucket lookups. Other changes include: * devoptab: add missing exit macros to some FS operations across all interfaces. * poc: update extractedRomFsReadThreadFunc() to make up for the removed RomFS functions.
2023-12-22 11:20:27 +00:00
if (!(dir->dir_entry = romfsGetDirectoryEntryByPath(fs_ctx, path))) DEVOPTAB_SET_ERROR_AND_EXIT(ENOENT);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
dir->cur_dir_offset = dir->dir_entry->directory_offset;
dir->cur_file_offset = dir->dir_entry->file_offset;
/* Update return value. */
ret = dirState;
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_PTR(ret);
}
static int romfsdev_dirreset(struct _reent *r, DIR_ITER *dirState)
{
ROMFS_DEV_INIT_DIR_VARS;
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Resetting state for directory \"%.*s\" in \"%s:\".", (int)dir->dir_entry->name_length, dir->dir_entry->name, dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Reset directory state. */
dir->state = 0;
dir->cur_dir_offset = dir->dir_entry->directory_offset;
dir->cur_file_offset = dir->dir_entry->file_offset;
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static int romfsdev_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat)
{
ROMFS_DEV_INIT_DIR_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Sanity check. */
if (!filename || !filestat) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
/*LOG_MSG_DEBUG("Getting info for next entry from directory \"%.*s\" in \"%s:\" (state %u, cur_dir_offset 0x%lX, cur_file_offset 0x%lX).", \
(int)dir->dir_entry->name_length, dir->dir_entry->name, dev_ctx->name, dir->state, dir->cur_dir_offset, dir->cur_file_offset);*/
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
if (dir->state < 2)
{
RomFileSystemDirectoryEntry *dir_entry = (dir->state == 0 ? dir->dir_entry : romfsGetDirectoryEntryByOffset(fs_ctx, dir->dir_entry->parent_offset));
if (!dir_entry) DEVOPTAB_SET_ERROR_AND_EXIT(EFAULT);
/* Fill directory entry. */
romfsdev_fill_dir_stat(filestat, fs_ctx, dir_entry, dev_ctx->mount_time);
strcpy(filename, dir->state == 0 ? "." : "..");
/* Update state. */
dir->state++;
DEVOPTAB_EXIT;
}
if (dir->cur_dir_offset != ROMFS_VOID_ENTRY)
{
/* Get next directory entry. */
RomFileSystemDirectoryEntry *dir_entry = romfsGetDirectoryEntryByOffset(fs_ctx, dir->cur_dir_offset);
if (!dir_entry) DEVOPTAB_SET_ERROR_AND_EXIT(EFAULT);
if (dir_entry->name_length > NAME_MAX) DEVOPTAB_SET_ERROR_AND_EXIT(ENAMETOOLONG);
/* Fill directory entry. */
romfsdev_fill_dir_stat(filestat, fs_ctx, dir_entry, dev_ctx->mount_time);
snprintf(filename, NAME_MAX + 1, "%.*s", (int)dir_entry->name_length, dir_entry->name);
/* Update child directory offset. */
dir->cur_dir_offset = dir_entry->next_offset;
DEVOPTAB_EXIT;
}
if (dir->cur_file_offset != ROMFS_VOID_ENTRY)
{
/* Get next file entry. */
RomFileSystemFileEntry *file_entry = romfsGetFileEntryByOffset(fs_ctx, dir->cur_file_offset);
if (!file_entry) DEVOPTAB_SET_ERROR_AND_EXIT(EFAULT);
if (file_entry->name_length > NAME_MAX) DEVOPTAB_SET_ERROR_AND_EXIT(ENAMETOOLONG);
/* Fill file entry. */
romfsdev_fill_file_stat(filestat, fs_ctx, file_entry, dev_ctx->mount_time);
snprintf(filename, NAME_MAX + 1, "%.*s", (int)file_entry->name_length, file_entry->name);
/* Update child file offset. */
dir->cur_file_offset = file_entry->next_offset;
DEVOPTAB_EXIT;
}
/* We have reached EOD. */
DEVOPTAB_SET_ERROR(ENOENT);
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static int romfsdev_dirclose(struct _reent *r, DIR_ITER *dirState)
{
ROMFS_DEV_INIT_DIR_VARS;
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Closing directory \"%.*s\" in \"%s:\".", (int)dir->dir_entry->name_length, dir->dir_entry->name, dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Reset directory state. */
memset(dir, 0, sizeof(RomFileSystemDirectoryState));
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static int romfsdev_statvfs(struct _reent *r, const char *path, struct statvfs *buf)
{
NX_IGNORE_ARG(path);
u64 ext_fs_size = 0;
ROMFS_DEV_INIT_VARS;
ROMFS_DEV_INIT_FS_ACCESS;
/* Sanity check. */
if (!buf) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Getting filesystem stats for \"%s:\"", dev_ctx->name);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Get RomFS total data size. */
if (!romfsGetTotalDataSize(fs_ctx, false, &ext_fs_size)) DEVOPTAB_SET_ERROR_AND_EXIT(EIO);
/* Fill filesystem stats. */
memset(buf, 0, sizeof(struct statvfs));
buf->f_bsize = 1;
buf->f_frsize = 1;
buf->f_blocks = ext_fs_size;
buf->f_bfree = 0;
buf->f_bavail = 0;
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_favail = 0;
buf->f_fsid = 0;
buf->f_flag = ST_NOSUID;
buf->f_namemax = FS_MAX_PATH;
end:
DEVOPTAB_DEINIT_VARS;
DEVOPTAB_RETURN_INT(0);
}
static const char *romfsdev_get_truncated_path(struct _reent *r, const char *path)
{
const u8 *p = (const u8*)path;
ssize_t units = 0;
u32 code = 0;
size_t len = 0;
DEVOPTAB_DECL_ERROR_STATE;
if (!r || !path || !*path) DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Input path: \"%s\".", path);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
/* Move the path pointer to the start of the actual path. */
do {
units = decode_utf8(&code, p);
if (units < 0) DEVOPTAB_SET_ERROR_AND_EXIT(EILSEQ);
p += units;
} while(code >= ' ' && code != ':');
/* We found a colon; p points to the actual path. */
if (code == ':') path = (const char*)p;
/* Make sure the provided path starts with a slash. */
if (path[0] != '/') DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
/* Make sure there are no more colons and that the remainder of the string is valid UTF-8. */
p = (const u8*)path;
do {
units = decode_utf8(&code, p);
if (units < 0) DEVOPTAB_SET_ERROR_AND_EXIT(EILSEQ);
if (code == ':') DEVOPTAB_SET_ERROR_AND_EXIT(EINVAL);
p += units;
} while(code >= ' ');
/* Verify fixed path length. */
len = strlen(path);
if (len >= FS_MAX_PATH) DEVOPTAB_SET_ERROR_AND_EXIT(ENAMETOOLONG);
poc: add file browser for NCA FS sections. Takes advantage of the recently implemented devoptab interfaces. Supports individual file dumping and multiple file/dir dumping via highlighting. May possibly need some additional testing. The code could potentially be improved, but I'll look into it at a later time -- I just want to release this now. Other changes include: * devoptab: comment out log messages. * utils: add utilsGetDirectorySize() function.
2023-12-26 00:25:29 +00:00
//LOG_MSG_DEBUG("Truncated path: \"%s\".", path);
Custom devoptab wrappers (part 5). This commit implements a devoptab wrapper for RomFS sections within NCAs, using code from romfs.c/h. Other changes include: * devoptab: add additional safety checks and some minor tweaks to both hfs_dev and pfs_dev calls.
2023-12-21 15:51:26 +00:00
end:
DEVOPTAB_RETURN_PTR(path);
}
static void romfsdev_fill_file_stat(struct stat *st, const RomFileSystemContext *fs_ctx, const RomFileSystemFileEntry *file_entry, time_t mount_time)
{
/* Clear stat struct. */
memset(st, 0, sizeof(struct stat));
/* Fill stat struct. */
st->st_ino = ROMFS_FILE_INODE(file_entry);
st->st_mode = (S_IFREG | S_IRUSR | S_IRGRP | S_IROTH);
st->st_nlink = 1;
st->st_size = (off_t)file_entry->size;
st->st_atime = st->st_mtime = st->st_ctime = mount_time;
}
static void romfsdev_fill_dir_stat(struct stat *st, RomFileSystemContext *fs_ctx, RomFileSystemDirectoryEntry *dir_entry, time_t mount_time)
{
/* Clear stat struct. */
memset(st, 0, sizeof(struct stat));
/* Fill stat struct. */
st->st_ino = ROMFS_DIR_INODE(dir_entry);
st->st_mode = (S_IFDIR | S_IRUSR | S_IRGRP | S_IROTH);
st->st_nlink = romfsdev_get_dir_nlink(fs_ctx, dir_entry);
st->st_size = ALIGN_UP(sizeof(RomFileSystemDirectoryEntry) + dir_entry->name_length, ROMFS_TABLE_ENTRY_ALIGNMENT);
st->st_atime = st->st_mtime = st->st_ctime = mount_time;
}
static nlink_t romfsdev_get_dir_nlink(RomFileSystemContext *fs_ctx, RomFileSystemDirectoryEntry *dir_entry)
{
u64 cur_entry_offset = 0;
nlink_t count = 2; // One for self, one for parent.
/* Short-circuit: check if we're dealing with an empty directory. */
if (dir_entry->file_offset == ROMFS_VOID_ENTRY && dir_entry->directory_offset == ROMFS_VOID_ENTRY) return count;
/* Loop through the child file entries' linked list. */
cur_entry_offset = dir_entry->file_offset;
while(cur_entry_offset != ROMFS_VOID_ENTRY)
{
/* Get current file entry. */
RomFileSystemFileEntry *cur_file_entry = romfsGetFileEntryByOffset(fs_ctx, cur_entry_offset);
if (!cur_file_entry) break;
/* Update count. */
count++;
/* Update current file entry offset. */
cur_entry_offset = cur_file_entry->next_offset;
}
/* Loop through the child directory entries' linked list. */
cur_entry_offset = dir_entry->directory_offset;
while(cur_entry_offset != ROMFS_VOID_ENTRY)
{
/* Get current directory entry. */
RomFileSystemDirectoryEntry *cur_dir_entry = romfsGetDirectoryEntryByOffset(fs_ctx, cur_entry_offset);
if (!cur_dir_entry) break;
/* Update count. */
count++;
/* Update current directory entry offset. */
cur_entry_offset = cur_dir_entry->next_offset;
}
return count;
}
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