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-rw-r--r--sw/z80/kernel/fs.c5
-rw-r--r--sw/z80/kernel/fs/fd.c255
-rw-r--r--sw/z80/kernel/fs/fs.c236
-rw-r--r--sw/z80/kernel/memory.c29
4 files changed, 520 insertions, 5 deletions
diff --git a/sw/z80/kernel/fs.c b/sw/z80/kernel/fs.c
deleted file mode 100644
index 3ce7f42..0000000
--- a/sw/z80/kernel/fs.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include "fs.h"
-#include "users.h"
-#include "mount.h"
-
-struct fs_mount_point * mount_points[FS_MOUNT_LIMIT];
diff --git a/sw/z80/kernel/fs/fd.c b/sw/z80/kernel/fs/fd.c
new file mode 100644
index 0000000..96603ad
--- /dev/null
+++ b/sw/z80/kernel/fs/fd.c
@@ -0,0 +1,255 @@
+#include "fs/fd.h"
+#include "fs/fdop.h"
+#include "fs/fs.h"
+
+/* from fd.h */
+struct file_desc fd_table[FD_TABLE_SIZE];
+struct uint8_t fd_bmap[FD_TABLE_SIZE / 8];
+
+/* File descriptors implementation */
+
+int8_t open(const char *path, uint8_t flags)
+{
+ // TODO
+ return 0;
+}
+
+size_t ls(int8_t fd, struct dirent *buf, uint8_t all)
+{
+ // TODO
+ return 0;
+}
+
+size_t find(int8_t fd, struct dirent *buf, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t mkdir(int8_t fd, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t touch(int8_t fd, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ln(int8_t fd, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t seek(int8_t fd, fsize_t pos)
+{
+ // TODO
+ return 0;
+}
+
+size_t readline(int8_t fd, char *buf, char term)
+{
+ // TODO
+ return 0;
+}
+
+int8_t print(int8_t fd, const char *str)
+{
+ // TODO
+ return 0;
+}
+
+size_t read(int8_t fd, void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+int8_t write(int8_t fd, const void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+void close(int8_t fd)
+{
+ // TODO
+ return 0;
+}
+
+/* Set of file descriptors operations */
+/* Determines if to use the serial interface or the address space */
+
+/* Address space section */
+
+/* File functions */
+
+size_t as_readline(inode_t inode, fsize_t seek, char *buf, char term)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_print(inode_t inode, fsize_t seek, const char *str)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_append(inode_t inode, fsize_t *seek_ptr, const char *str)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_read(inode_t inode, fsize_t seek, void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_write(inode_t inode, fsize_t seek, const void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
+n)
+{
+ // TODO
+ return 0;
+}
+
+/* Directory functions */
+
+size_t as_ls(inode_t inode, struct dirent *buf, uint8_t all)
+{
+ // TODO
+ return 0;
+}
+
+size_t as_find(inode_t inode, struct dirent *buf, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t as_mkdir(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t as_rmdir(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t as_touch(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t as_rm(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t as_ln(inode_t inode, const char *path, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+/* Serial Space section */
+/* Warning, it doesn't switch to the right driver */
+
+/* File functions */
+
+size_t ss_readline(inode_t inode, fsize_t seek, char *buf, char term)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_print(inode_t inode, fsize_t seek, const char *str)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_append(inode_t inode, fsize_t *seek_ptr, const char *str)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_read(inode_t inode, fsize_t seek, void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_write(inode_t inode, fsize_t seek, const void *buf, size_t n)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_bin_append(inode_t inode, fsize_t *seek_ptr, const void *buf, size_t
+n)
+{
+ // TODO
+ return 0;
+}
+
+/* Directory functions */
+
+size_t ss_ls(inode_t inode, struct dirent *buf, uint8_t all)
+{
+ // TODO
+ return 0;
+}
+
+size_t ss_find(inode_t inode, struct dirent *buf, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ss_mkdir(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ss_rmdir(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ss_touch(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ss_rm(inode_t inode, const char *name)
+{
+ // TODO
+ return 0;
+}
+
+int8_t ss_ln(inode_t, const char *path, const char *name)
+{
+ // TODO
+ return 0;
+}
diff --git a/sw/z80/kernel/fs/fs.c b/sw/z80/kernel/fs/fs.c
new file mode 100644
index 0000000..584f934
--- /dev/null
+++ b/sw/z80/kernel/fs/fs.c
@@ -0,0 +1,236 @@
+#include "fs/fs.h"
+#include "fs/users.h"
+#include "fs/dev.h"
+
+/* from users.h */
+struct fs_user c_user;
+
+/* from inode.h */
+inode_t c_inode;
+
+struct fs_dev devices[FS_MOUNT_LIMIT];
+
+/* filesystem basic implementation */
+
+devsize_t fs_block(blk_t block)
+{
+ // TODO
+ return 0;
+}
+
+devsize_t fs_inode(struct fs_inode *buf)
+{
+ struct fs_superblock * sb;
+ devsize_t seek;
+
+ if (FS_USE_ROM(c_inode))
+ {
+ seek = FS_ROM_SPACE;
+ sb = (struct fs_superblock*) seek;
+
+ } else {
+
+ seek = 0;
+
+ if (c_inode.dev > 0x7)
+ panic("Invalid device"); // TODO, still to implement
+
+ sb = &devices[c_inode.dev].superblock;
+ }
+
+ if (c_inode.inode >= sb->imap_size)
+ {
+ // TODO, set errno
+ return 0; // inode doesn't exist
+ }
+
+ seek += sizeof(struct fs_superblock) +
+ sizeof(struct fs_inode) * c_inode.inode;
+
+ if (FS_USE_ROM(c_inode))
+ *buf = *(struct fs_inode*)seek;
+ else
+ {
+ /* set sio port */
+ sio_port = devices[c_inode.dev].port_no;
+ sio_seek = seek;
+
+ if (sio_read((void *)buf, INODE_META_SIZE) < INODE_META_SIZE)
+ {
+ // TODO, set errno
+ return 0; // cannot read to device
+ }
+ }
+
+ return seek + INODE_META_SIZE;
+}
+
+/* from fd.h */
+int8_t __fd_new()
+{
+ int8_t fd;
+ for (int8_t = 0; i < FD_TABLE_SIZE / 8; i++)
+ {
+ for (uint8_t bit = 0x80, j = 0; bit > 0; bit >>= 1, j++)
+ {
+ if (!(bit & fd_bmap[i]))
+ return i * 8 + j;
+ }
+ }
+
+ return -1;
+}
+
+/* from fd.h */
+int8_t __open_c_inode(uint8_t flags)
+{
+ /* read meta data */
+ struct fs_inode inode;
+
+ /* init file_desc buffer */
+ struct file_desc desc = {c_inode, 0};
+
+ desc.begin = fs_inode(&inode);
+
+ /* bind operations */
+
+ if (flags & OPEN_DIR)
+ {
+ /* dir handler */
+
+ if (inode.type == INODE_TYPE_DIR)
+ {
+ /* bind dir functions */
+ if (FS_USE_ROM(c_inode))
+ /* bind address space functions */
+ FD_BIND_AS_DIR(desc.opers)
+ else
+ /* bind serial space functions */
+ FD_BIND_SS_DIR(desc.opers)
+
+ } else {
+
+ // TODO, set errno
+ return -1; // not a directory
+ }
+
+ } else if (flags & OPEN_LINK) {
+
+ /* link handler */
+
+ if (inode.type == INODE_TYPE_LINK)
+ {
+ if (FS_USE_ROM(c_inode))
+ FD_BIND_AS_FILE(desc.opers, flags)
+ else
+ FD_BIND_SS_FILE(desc.opers, flags)
+
+ if (flags & OPEN_ERASE)
+ /* empty file content */
+ __inode_empty(desc.begin);
+
+ } else {
+
+ // TODO, set errno
+ return -1; // not a link
+ }
+
+ } else {
+
+ /* file */
+
+ if (inode.type == INODE_TYPE_FILE)
+ ; // do nothing
+ else if (inode.type == INODE_TYPE_SPECIAL) {
+
+ // TODO, bind special callbacks
+
+ } else {
+
+ // TODO, set errno
+ return -1;
+ }
+
+ /* bind operations */
+
+ if (FS_USE_ROM(c_inode))
+ {
+ if (flags & OPEN_BIN)
+ FD_BIND_AS_BINFILE(desc.opers, flags)
+ else
+ FD_BIND_AS_FILE(desc.opers, flags)
+
+ } else {
+
+ if (flags & OPEN_BIN)
+ FD_BIND_SS_BINFILE(desc.opers, flags)
+ else
+ FD_BIND_SS_FILE(desc.opers, flags)
+ }
+ }
+
+ /* find a free fd space */
+
+ int8_t fd = __fd_new();
+
+ if (fd < 0)
+ {
+ // TODO, set errno, fd not available
+
+ } else
+ fd_table[fd] = desc; // copy buffer into the table
+
+ return fd;
+}
+
+inode_t fs_rec_path(const char *path);
+
+inode_t fs_parse_path(const char *path)
+{
+ inode_t ino, cwd = c_inode;
+
+ switch (path[0])
+ {
+ case '0':
+ FS_INODE_NULL(ino)
+ return ino;
+
+ case '/':
+ FS_INODE_ROOT(ino)
+ c_inode = ino; // set cwd to root
+ path++;
+ break;
+
+ case '~':
+
+ if (path[1] = '/')
+ {
+ c_inode.dev = FS_DEV_ROM;
+ c_inode.inode = c_user.home; // set cwd to home
+ path += 2;
+ }
+
+ break;
+ }
+
+ ino = fs_rec_path(path);
+ c_inode = cwd;
+ return ino;
+}
+
+inode_t fs_rec_path(const char *path)
+{
+ devsize_t inode = fs_inode(c_inode.inode);
+ inode_t rel;
+
+ if (!inode) // if not exists
+ {
+ FS_INODE_NULL(rel)
+ return rel;
+ }
+
+ // TODO, check if dir or file
+ // TODO, if dir, find name
+ // TODO, set fs_cwd to new inode
+ // TODO, recall fs_rec_path
+}
diff --git a/sw/z80/kernel/memory.c b/sw/z80/kernel/memory.c
index f174906..bcda3c3 100644
--- a/sw/z80/kernel/memory.c
+++ b/sw/z80/kernel/memory.c
@@ -41,3 +41,32 @@ int page_unmap(int page)
pages_table[page].used = 0;
return 0;
}
+
+/* k_malloc manager */
+/*
+struct k_buf_entry k_buf_table[K_BUF_MAX_COUNT];
+
+struct k_buf k_buffers[K_BUF_MAX_COUNT];
+
+void * k_malloc()
+{
+ for (uint8_t i = 0; i < K_BUF_TABLE_COUNT; i++)
+ {
+ for (uint8_t bit = 0x80, j = 0; j < 8; bit >>= 1, j++)
+ {
+ if (bit & k_buf_table[i])
+ {
+ k_buf_table[i] |= bit;
+ return &k_buffers[8 * i + j];
+ }
+ }
+ }
+}
+
+void k_free(void * ptr)
+{
+ uint8_t index = (ptr - &k_buffers[0]) / K_BUF_SIZE;
+
+ if (index < K_BUF_MAX_COUNT)
+ k_buf_table[index / 8] ^= 0x80 >> index % 8;
+}*/
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-23 20:57:41 +0100