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m---------src/user/app/ext2fs/ext20
-rw-r--r--src/user/app/ext2fs/main.c243
2 files changed, 0 insertions, 243 deletions
diff --git a/src/user/app/ext2fs/ext2 b/src/user/app/ext2fs/ext2
deleted file mode 160000
-Subproject 8db7b4fbb2429b504d7c711dae89d917de16bed
diff --git a/src/user/app/ext2fs/main.c b/src/user/app/ext2fs/main.c
deleted file mode 100644
index 12ef3bc..0000000
--- a/src/user/app/ext2fs/main.c
+++ /dev/null
@@ -1,243 +0,0 @@
-#include "ext2/ex_cache.h"
-#include "ext2/ext2.h"
-#include <assert.h>
-#include <camellia/flags.h>
-#include <camellia/fs/dir.h>
-#include <camellia/fs/misc.h>
-#include <camellia/fsutil.h>
-#include <camellia/syscalls.h>
-#include <err.h>
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-struct handle {
- uint32_t n;
- bool dir;
-};
-
-static int my_read(void *fp, void *buf, size_t len, size_t off);
-static int my_write(void *fp, const void *buf, size_t len, size_t off);
-static void do_open(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf);
-static void do_read(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf, size_t buflen);
-static void do_write(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf);
-static void do_getsize(struct ext2 *fs, hid_t reqh, struct ufs_request *req);
-
-static int
-my_read(void *fp, void *buf, size_t len, size_t off)
-{
- if (fseek(fp, off, SEEK_SET) < 0) {
- return -1;
- } else if (fread(buf, len, 1, fp) == 1) {
- return 0;
- } else {
- return -1;
- }
-}
-
-static int
-my_write(void *fp, const void *buf, size_t len, size_t off)
-{
- if (fseek(fp, off, SEEK_SET) < 0) {
- return -1;
- } else if (fwrite(buf, len, 1, fp) == 1) {
- return 0;
- } else {
- return -1;
- }
-}
-
-static void
-do_open(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf)
-{
- bool is_dir = req->len == 0 || buf[req->len-1] == '/';
- uint32_t n = ext2c_walk(fs, buf, req->len);
- if (n == 0) {
- if (is_dir) {
- _sys_fs_respond(reqh, NULL, -ENOSYS, 0);
- return;
- }
- /* buf[0] == '/', strrchr != NULL */
- char *name = strrchr(buf, '/') + 1;
- uint32_t dir_n = ext2c_walk(fs, buf, name - buf);
- if (dir_n == 0) {
- _sys_fs_respond(reqh, NULL, -ENOENT, 0);
- return;
- }
- n = ext2_alloc_inode(fs, 0100700);
- if (n == 0) {
- _sys_fs_respond(reqh, NULL, -1, 0);
- return;
- }
- if (ext2_link(fs, dir_n, name, n, 1) < 0) {
- _sys_fs_respond(reqh, NULL, -1, 0);
- return;
- }
- } else {
- struct ext2d_inode *inode = ext2_req_inode(fs, n);
- if (!inode) {
- _sys_fs_respond(reqh, NULL, -ENOENT, 0);
- return;
- }
- int type = (inode->perms >> 12) & 0xF;
- ext2_dropreq(fs, inode, false);
-
- if ((type == 0x8 && is_dir) || (type == 0x4 && !is_dir)) {
- _sys_fs_respond(reqh, NULL, -ENOENT, 0);
- return;
- } else if (type != 0x8 && type != 0x4) {
- _sys_fs_respond(reqh, NULL, -ENOSYS, 0);
- return;
- }
- }
-
- struct handle *h = malloc(sizeof *h);
- if (!h) {
- _sys_fs_respond(reqh, NULL, -1, 0);
- return;
- }
- h->n = n;
- h->dir = is_dir;
- _sys_fs_respond(reqh, h, 0, 0);
-}
-
-static void
-do_read(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf, size_t buflen)
-{
- struct handle *h = req->id;
- if (!h->dir) {
- struct ext2d_inode *inode = ext2_req_inode(fs, h->n);
- if (!inode) goto err;
- fs_normslice(&req->offset, &req->capacity, inode->size_lower, false);
- ext2_dropreq(fs, inode, false);
-
- void *b = ext2_req_file(fs, h->n, &req->capacity, req->offset);
- if (b) {
- _sys_fs_respond(reqh, b, req->capacity, 0);
- ext2_dropreq(fs, b, false);
- } else if (req->capacity == 0) {
- /* set by ext2_req_file on EOF */
- _sys_fs_respond(reqh, b, 0, 0);
- } else goto err;
- } else {
- struct dirbuild db;
- char namebuf[257];
- if (req->capacity > buflen)
- req->capacity = buflen;
- dir_start(&db, req->offset, buf, buflen);
- for (struct ext2_diriter iter = {0}; ext2_diriter(&iter, fs, h->n); ) {
- if (iter.ent->namelen_lower == 1 && iter.ent->name[0] == '.') {
- continue;
- }
- if (iter.ent->namelen_lower == 2
- && iter.ent->name[0] == '.'
- && iter.ent->name[1] == '.')
- {
- continue;
- }
- if (iter.ent->type == 2) { /* dir */
- memcpy(namebuf, iter.ent->name, iter.ent->namelen_lower);
- namebuf[iter.ent->namelen_lower] = '/';
- dir_appendl(&db, namebuf, iter.ent->namelen_lower + 1);
- } else {
- dir_appendl(&db, iter.ent->name, iter.ent->namelen_lower);
- }
- }
- _sys_fs_respond(reqh, buf, dir_finish(&db), 0);
- }
- return;
-err:
- _sys_fs_respond(reqh, NULL, -1, 0);
-}
-
-static void
-do_write(struct ext2 *fs, hid_t reqh, struct ufs_request *req, char *buf)
-{
- struct handle *h = req->id;
- if (h->dir) goto err;
-
- struct ext2d_inode *inode = ext2_req_inode(fs, h->n);
- if (!inode) goto err;
- fs_normslice(&req->offset, &req->len, inode->size_lower, true);
- if ((req->flags & WRITE_TRUNCATE) || inode->size_lower < req->offset + req->len) {
- inode->size_lower = req->offset + req->len;
- if (ext2_dropreq(fs, inode, true) < 0) {
- goto err;
- }
- } else {
- ext2_dropreq(fs, inode, false);
- }
- inode = NULL;
-
- int ret = ext2_write(fs, h->n, buf, req->len, req->offset);
- _sys_fs_respond(reqh, NULL, ret, 0);
- return;
-err:
- _sys_fs_respond(reqh, NULL, -1, 0);
-}
-
-static void
-do_getsize(struct ext2 *fs, hid_t reqh, struct ufs_request *req) {
- struct handle *h = req->id;
- if (h->dir) goto err;
-
- struct ext2d_inode *inode = ext2_req_inode(fs, h->n);
- if (!inode) goto err;
- _sys_fs_respond(reqh, NULL, inode->size_lower, 0);
- ext2_dropreq(fs, inode, false);
- return;
-err:
- _sys_fs_respond(reqh, NULL, -1, 0);
-}
-
-int
-main(int argc, char **argv)
-{
- intr_set(NULL);
-
- if (argc < 2) errx(1, "bad usage");
- // TODO pread/pwrite for normal handles
- FILE *disk = fopen(argv[1], "r+");
- if (!disk) err(1, "couldn't open '%s'", argv[1]);
-
- struct e2device *dev = exc_init(my_read, my_write, (void*)disk);
- if (!dev) errx(1, "exc_init failed");
- struct ext2 *fs = ext2_opendev(dev, exc_req, exc_drop);
- if (!fs) errx(1, "ext2_opendev failed");
-
- const size_t buflen = 4096;
- char *buf = malloc(buflen);
- struct ufs_request req;
- for (;;) {
- hid_t reqh = ufs_wait(buf, buflen, &req);
- struct handle *h = req.id;
- if (reqh < 0) break;
- switch (req.op) {
- case VFSOP_OPEN:
- do_open(fs, reqh, &req, buf);
- break;
- case VFSOP_READ:
- do_read(fs, reqh, &req, buf, buflen);
- break;
- case VFSOP_WRITE:
- do_write(fs, reqh, &req, buf);
- break;
- case VFSOP_GETSIZE:
- do_getsize(fs, reqh, &req);
- break;
- case VFSOP_CLOSE:
- free(h);
- _sys_fs_respond(reqh, NULL, -1, 0);
- break;
- default:
- _sys_fs_respond(reqh, NULL, -1, 0);
- break;
- }
- }
- warnx("cleaning up");
-
- return 1;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-23 05:02:01 +0000