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authorMatt Mower <mowerm@gmail.com>2015-12-13 18:29:45 +0100
committerEthan Yonker <dees_troy@teamw.in>2015-12-23 16:56:56 +0100
commit09ef1e410970b74df384047fcf4c0e18a6ec3643 (patch)
tree6e88024c45cfb5a66220f2910f853e774f07fb16 /exfat/exfat-fuse/main.c
parentexfat: Build fsck and update path to mkfs (diff)
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Diffstat (limited to 'exfat/exfat-fuse/main.c')
-rw-r--r--exfat/exfat-fuse/main.c564
1 files changed, 0 insertions, 564 deletions
diff --git a/exfat/exfat-fuse/main.c b/exfat/exfat-fuse/main.c
deleted file mode 100644
index abb60e7df..000000000
--- a/exfat/exfat-fuse/main.c
+++ /dev/null
@@ -1,564 +0,0 @@
-/*
- main.c (01.09.09)
- FUSE-based exFAT implementation. Requires FUSE 2.6 or later.
-
- Free exFAT implementation.
- Copyright (C) 2010-2013 Andrew Nayenko
-
- This program 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 2 of the License, or
- (at your option) any later version.
-
- 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.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#define FUSE_USE_VERSION 26
-#include <fuse.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <exfat.h>
-#include <inttypes.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <pwd.h>
-#include <unistd.h>
-
-#define exfat_debug(format, ...)
-
-#if !defined(FUSE_VERSION) || (FUSE_VERSION < 26)
- #error FUSE 2.6 or later is required
-#endif
-
-const char* default_options = "ro_fallback,allow_other,blkdev,big_writes,"
- "defer_permissions";
-
-struct exfat ef;
-
-static struct exfat_node* get_node(const struct fuse_file_info* fi)
-{
- return (struct exfat_node*) (size_t) fi->fh;
-}
-
-static void set_node(struct fuse_file_info* fi, struct exfat_node* node)
-{
- fi->fh = (uint64_t) (size_t) node;
-}
-
-static int fuse_exfat_getattr(const char* path, struct stat* stbuf)
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
-
- exfat_stat(&ef, node, stbuf);
- exfat_put_node(&ef, node);
- return 0;
-}
-
-static int fuse_exfat_truncate(const char* path, off64_t size)
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s, %"PRId64, __func__, path, size);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
-
- rc = exfat_truncate(&ef, node, size, true);
- exfat_put_node(&ef, node);
- return rc;
-}
-
-static int fuse_exfat_readdir(const char* path, void* buffer,
- fuse_fill_dir_t filler, off64_t offset, struct fuse_file_info* fi)
-{
- struct exfat_node* parent;
- struct exfat_node* node;
- struct exfat_iterator it;
- int rc;
- char name[UTF8_BYTES(EXFAT_NAME_MAX) + 1];
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &parent, path);
- if (rc != 0)
- return rc;
- if (!(parent->flags & EXFAT_ATTRIB_DIR))
- {
- exfat_put_node(&ef, parent);
- exfat_error("`%s' is not a directory (0x%x)", path, parent->flags);
- return -ENOTDIR;
- }
-
- filler(buffer, ".", NULL, 0);
- filler(buffer, "..", NULL, 0);
-
- rc = exfat_opendir(&ef, parent, &it);
- if (rc != 0)
- {
- exfat_put_node(&ef, parent);
- exfat_error("failed to open directory `%s'", path);
- return rc;
- }
- while ((node = exfat_readdir(&ef, &it)))
- {
- exfat_get_name(node, name, sizeof(name) - 1);
- exfat_debug("[%s] %s: %s, %"PRId64" bytes, cluster 0x%x", __func__,
- name, IS_CONTIGUOUS(*node) ? "contiguous" : "fragmented",
- node->size, node->start_cluster);
- filler(buffer, name, NULL, 0);
- exfat_put_node(&ef, node);
- }
- exfat_closedir(&ef, &it);
- exfat_put_node(&ef, parent);
- return 0;
-}
-
-static int fuse_exfat_open(const char* path, struct fuse_file_info* fi)
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
- set_node(fi, node);
- fi->keep_cache = 1;
- return 0;
-}
-
-static int fuse_exfat_release(const char* path, struct fuse_file_info* fi)
-{
- exfat_debug("[%s] %s", __func__, path);
- exfat_put_node(&ef, get_node(fi));
- return 0;
-}
-
-static int fuse_exfat_fsync(const char* path, int datasync,
- struct fuse_file_info *fi)
-{
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
- rc = exfat_flush_node(&ef, get_node(fi));
- if (rc != 0)
- return rc;
- rc = exfat_flush(&ef);
- if (rc != 0)
- return rc;
- return exfat_fsync(ef.dev);
-}
-
-static int fuse_exfat_read(const char* path, char* buffer, size_t size,
- off64_t offset, struct fuse_file_info* fi)
-{
- ssize_t ret;
-
- exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
- ret = exfat_generic_pread(&ef, get_node(fi), buffer, size, offset);
- if (ret < 0)
- return -EIO;
- return ret;
-}
-
-static int fuse_exfat_write(const char* path, const char* buffer, size_t size,
- off64_t offset, struct fuse_file_info* fi)
-{
- ssize_t ret;
-
- exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
- ret = exfat_generic_pwrite(&ef, get_node(fi), buffer, size, offset);
- if (ret < 0)
- return -EIO;
- return ret;
-}
-
-static int fuse_exfat_unlink(const char* path)
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
-
- rc = exfat_unlink(&ef, node);
- exfat_put_node(&ef, node);
- return rc;
-}
-
-static int fuse_exfat_rmdir(const char* path)
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
-
- rc = exfat_rmdir(&ef, node);
- exfat_put_node(&ef, node);
- return rc;
-}
-
-static int fuse_exfat_mknod(const char* path, mode_t mode, dev_t dev)
-{
- exfat_debug("[%s] %s 0%ho", __func__, path, mode);
- return exfat_mknod(&ef, path);
-}
-
-static int fuse_exfat_mkdir(const char* path, mode_t mode)
-{
- exfat_debug("[%s] %s 0%ho", __func__, path, mode);
- return exfat_mkdir(&ef, path);
-}
-
-static int fuse_exfat_rename(const char* old_path, const char* new_path)
-{
- exfat_debug("[%s] %s => %s", __func__, old_path, new_path);
- return exfat_rename(&ef, old_path, new_path);
-}
-
-static int fuse_exfat_utimens(const char* path, const struct timespec tv[2])
-{
- struct exfat_node* node;
- int rc;
-
- exfat_debug("[%s] %s", __func__, path);
-
- rc = exfat_lookup(&ef, &node, path);
- if (rc != 0)
- return rc;
-
- exfat_utimes(node, tv);
- exfat_put_node(&ef, node);
- return 0;
-}
-
-static int fuse_exfat_chmod(const char* path, mode_t mode)
-{
- const mode_t VALID_MODE_MASK = S_IFREG | S_IFDIR |
- S_IRWXU | S_IRWXG | S_IRWXO;
-
- exfat_debug("[%s] %s 0%ho", __func__, path, mode);
- if (mode & ~VALID_MODE_MASK)
- return -EPERM;
- return 0;
-}
-
-static int fuse_exfat_chown(const char* path, uid_t uid, gid_t gid)
-{
- exfat_debug("[%s] %s %u:%u", __func__, path, uid, gid);
- if (uid != ef.uid || gid != ef.gid)
- return -EPERM;
- return 0;
-}
-
-static int fuse_exfat_statfs(const char* path, struct statvfs* sfs)
-{
- exfat_debug("[%s]", __func__);
-
- sfs->f_bsize = CLUSTER_SIZE(*ef.sb);
- sfs->f_frsize = CLUSTER_SIZE(*ef.sb);
- sfs->f_blocks = le64_to_cpu(ef.sb->sector_count) >> ef.sb->spc_bits;
- sfs->f_bavail = exfat_count_free_clusters(&ef);
- sfs->f_bfree = sfs->f_bavail;
- sfs->f_namemax = EXFAT_NAME_MAX;
-
- /*
- Below are fake values because in exFAT there is
- a) no simple way to count files;
- b) no such thing as inode;
- So here we assume that inode = cluster.
- */
- sfs->f_files = (sfs->f_blocks - sfs->f_bfree) >> ef.sb->spc_bits;
- sfs->f_favail = sfs->f_bfree >> ef.sb->spc_bits;
- sfs->f_ffree = sfs->f_bavail;
-
- return 0;
-}
-
-static void* fuse_exfat_init(struct fuse_conn_info* fci)
-{
- exfat_debug("[%s]", __func__);
-#ifdef FUSE_CAP_BIG_WRITES
- fci->want |= FUSE_CAP_BIG_WRITES;
-#endif
- return NULL;
-}
-
-static void fuse_exfat_destroy(void* unused)
-{
- exfat_debug("[%s]", __func__);
- exfat_unmount(&ef);
-}
-
-static void usage(const char* prog)
-{
- fprintf(stderr, "Usage: %s [-d] [-o options] [-V] <device> <dir>\n", prog);
- exit(1);
-}
-
-static struct fuse_operations fuse_exfat_ops =
-{
- .getattr = fuse_exfat_getattr,
- .truncate = fuse_exfat_truncate,
- .readdir = fuse_exfat_readdir,
- .open = fuse_exfat_open,
- .release = fuse_exfat_release,
- .fsync = fuse_exfat_fsync,
- .fsyncdir = fuse_exfat_fsync,
- .read = fuse_exfat_read,
- .write = fuse_exfat_write,
- .unlink = fuse_exfat_unlink,
- .rmdir = fuse_exfat_rmdir,
- .mknod = fuse_exfat_mknod,
- .mkdir = fuse_exfat_mkdir,
- .rename = fuse_exfat_rename,
- .utimens = fuse_exfat_utimens,
- .chmod = fuse_exfat_chmod,
- .chown = fuse_exfat_chown,
- .statfs = fuse_exfat_statfs,
- .init = fuse_exfat_init,
- .destroy = fuse_exfat_destroy,
-};
-
-static char* add_option(char* options, const char* name, const char* value)
-{
- size_t size;
-
- if (value)
- size = strlen(options) + strlen(name) + strlen(value) + 3;
- else
- size = strlen(options) + strlen(name) + 2;
-
- options = realloc(options, size);
- if (options == NULL)
- {
- exfat_error("failed to reallocate options string");
- return NULL;
- }
- strcat(options, ",");
- strcat(options, name);
- if (value)
- {
- strcat(options, "=");
- strcat(options, value);
- }
- return options;
-}
-
-static char* add_user_option(char* options)
-{
- struct passwd* pw;
-
- if (getuid() == 0)
- return options;
-
- pw = getpwuid(getuid());
- if (pw == NULL || pw->pw_name == NULL)
- {
- free(options);
- exfat_error("failed to determine username");
- return NULL;
- }
- return add_option(options, "user", pw->pw_name);
-}
-
-static char* add_blksize_option(char* options, long cluster_size)
-{
- long page_size = sysconf(_SC_PAGESIZE);
- char blksize[20];
-
- if (page_size < 1)
- page_size = 0x1000;
-
- snprintf(blksize, sizeof(blksize), "%ld", MIN(page_size, cluster_size));
- return add_option(options, "blksize", blksize);
-}
-
-static char* add_fuse_options(char* options, const char* spec)
-{
- options = add_option(options, "fsname", spec);
- if (options == NULL)
- return NULL;
- options = add_user_option(options);
- if (options == NULL)
- return NULL;
- options = add_blksize_option(options, CLUSTER_SIZE(*ef.sb));
- if (options == NULL)
- return NULL;
-
- return options;
-}
-
-int main(int argc, char* argv[])
-{
- struct fuse_args mount_args = FUSE_ARGS_INIT(0, NULL);
- struct fuse_args newfs_args = FUSE_ARGS_INIT(0, NULL);
- const char* spec = NULL;
- const char* mount_point = NULL;
- char* mount_options;
- int debug = 0;
- struct fuse_chan* fc = NULL;
- struct fuse* fh = NULL;
- int opt;
-
- printf("FUSE exfat %u.%u.%u\n",
- EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
-
- mount_options = strdup(default_options);
- if (mount_options == NULL)
- {
- exfat_error("failed to allocate options string");
- return 1;
- }
-
- while ((opt = getopt(argc, argv, "dno:Vv")) != -1)
- {
- switch (opt)
- {
- case 'd':
- debug = 1;
- break;
- case 'n':
- break;
- case 'o':
- mount_options = add_option(mount_options, optarg, NULL);
- if (mount_options == NULL)
- return 1;
- break;
- case 'V':
- free(mount_options);
- puts("Copyright (C) 2010-2013 Andrew Nayenko");
- return 0;
- case 'v':
- break;
- default:
- free(mount_options);
- usage(argv[0]);
- break;
- }
- }
- if (argc - optind != 2)
- {
- free(mount_options);
- usage(argv[0]);
- }
- spec = argv[optind];
- mount_point = argv[optind + 1];
-
- if (exfat_mount(&ef, spec, mount_options) != 0)
- {
- free(mount_options);
- return 1;
- }
-
- if (ef.ro == -1) /* read-only fallback was used */
- {
- mount_options = add_option(mount_options, "ro", NULL);
- if (mount_options == NULL)
- {
- exfat_unmount(&ef);
- return 1;
- }
- }
-
- mount_options = add_fuse_options(mount_options, spec);
- if (mount_options == NULL)
- {
- exfat_unmount(&ef);
- return 1;
- }
-
- /* create arguments for fuse_mount() */
- if (fuse_opt_add_arg(&mount_args, "exfat") != 0 ||
- fuse_opt_add_arg(&mount_args, "-o") != 0 ||
- fuse_opt_add_arg(&mount_args, mount_options) != 0)
- {
- exfat_unmount(&ef);
- free(mount_options);
- return 1;
- }
-
- free(mount_options);
-
- /* create FUSE mount point */
- fc = fuse_mount(mount_point, &mount_args);
- fuse_opt_free_args(&mount_args);
- if (fc == NULL)
- {
- exfat_unmount(&ef);
- return 1;
- }
-
- /* create arguments for fuse_new() */
- if (fuse_opt_add_arg(&newfs_args, "") != 0 ||
- (debug && fuse_opt_add_arg(&newfs_args, "-d") != 0))
- {
- fuse_unmount(mount_point, fc);
- exfat_unmount(&ef);
- return 1;
- }
-
- /* create new FUSE file system */
- fh = fuse_new(fc, &newfs_args, &fuse_exfat_ops,
- sizeof(struct fuse_operations), NULL);
- fuse_opt_free_args(&newfs_args);
- if (fh == NULL)
- {
- fuse_unmount(mount_point, fc);
- exfat_unmount(&ef);
- return 1;
- }
-
- /* exit session on HUP, TERM and INT signals and ignore PIPE signal */
- if (fuse_set_signal_handlers(fuse_get_session(fh)) != 0)
- {
- fuse_unmount(mount_point, fc);
- fuse_destroy(fh);
- exfat_unmount(&ef);
- exfat_error("failed to set signal handlers");
- return 1;
- }
-
- /* go to background (unless "-d" option is passed) and run FUSE
- main loop */
- if (fuse_daemonize(debug) == 0)
- {
- if (fuse_loop(fh) != 0)
- exfat_error("FUSE loop failure");
- }
- else
- exfat_error("failed to daemonize");
-
- fuse_remove_signal_handlers(fuse_get_session(fh));
- /* note that fuse_unmount() must be called BEFORE fuse_destroy() */
- fuse_unmount(mount_point, fc);
- fuse_destroy(fh);
- return 0;
-}