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fusedav.c
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fusedav.c
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/***
This file is part of fusedav.
fusedav 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.
fusedav 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 fusedav; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <signal.h>
#include <pthread.h>
#include <time.h>
#include <assert.h>
#include <stdio.h>
#include <stddef.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>
#include <sys/statfs.h>
#include <getopt.h>
#include <attr/xattr.h>
#include <sys/types.h>
#include <grp.h>
#include <pwd.h>
#include <ne_request.h>
#include <ne_basic.h>
#include <ne_props.h>
#include <ne_utils.h>
#include <ne_socket.h>
#include <ne_auth.h>
#include <ne_dates.h>
#include <ne_redirect.h>
#include <ne_uri.h>
#include <fuse.h>
#include <yaml.h>
#include "log.h"
#include "statcache.h"
#include "ldb-filecache.h"
#include "session.h"
#include "fusedav.h"
const ne_propname query_properties[] = {
{ "DAV:", "resourcetype" },
{ "http://apache.org/dav/props/", "executable" },
{ "DAV:", "getcontentlength" },
{ "DAV:", "getlastmodified" },
{ "DAV:", "creationdate" },
{ "DAV:", "event" }, // For optional progressive PROPFIND support.
{ NULL, NULL }
};
mode_t mask = 0;
int debug = 1;
struct fuse* fuse = NULL;
ne_lock_store *lock_store = NULL;
struct ne_lock *lock = NULL;
int lock_thread_exit = 0;
#define MIME_XATTR "user.mime_type"
#define MAX_REDIRECTS 10
#define CLOCK_SKEW 10 // seconds
struct fill_info {
void *buf;
fuse_fill_dir_t filler;
const char *root;
};
// Access with struct fusedav_config *config = fuse_get_context()->private_data;
struct fusedav_config {
char *uri;
char *username;
char *password;
char *ca_certificate;
char *client_certificate;
char *client_certificate_password;
int lock_timeout;
bool lock_on_mount;
int verbosity;
bool nodaemon;
bool ignoreutimens;
char *cache_path;
stat_cache_t *cache;
uid_t uid;
gid_t gid;
mode_t dir_mode;
mode_t file_mode;
char *run_as_uid_name;
char *run_as_gid_name;
bool progressive_propfind;
bool refresh_dir_for_file_stat;
bool ignorexattr;
};
enum {
KEY_HELP,
KEY_VERSION,
};
#define FUSEDAV_OPT(t, p, v) { t, offsetof(struct fusedav_config, p), v }
static struct fuse_opt fusedav_opts[] = {
FUSEDAV_OPT("username=%s", username, 0),
FUSEDAV_OPT("password=%s", password, 0),
FUSEDAV_OPT("ca_certificate=%s", ca_certificate, 0),
FUSEDAV_OPT("client_certificate=%s", client_certificate, 0),
FUSEDAV_OPT("client_certificate_password=%s", client_certificate_password, 0),
FUSEDAV_OPT("lock_on_mount", lock_on_mount, true),
FUSEDAV_OPT("lock_timeout=%i", lock_timeout, 60),
FUSEDAV_OPT("cache_path=%s", cache_path, 0),
FUSEDAV_OPT("verbosity=%d", verbosity, 7),
FUSEDAV_OPT("nodaemon", nodaemon, true),
FUSEDAV_OPT("ignoreutimens", ignoreutimens, true),
FUSEDAV_OPT("uid=%d", uid, 0),
FUSEDAV_OPT("gid=%d", gid, 0),
FUSEDAV_OPT("dir_mode=%o", dir_mode, 0),
FUSEDAV_OPT("file_mode=%o", file_mode, 0),
FUSEDAV_OPT("run_as_uid=%s", run_as_uid_name, 0),
FUSEDAV_OPT("run_as_gid=%s", run_as_gid_name, 0),
FUSEDAV_OPT("progressive_propfind", progressive_propfind, true),
FUSEDAV_OPT("refresh_dir_for_file_stat", refresh_dir_for_file_stat, true),
FUSEDAV_OPT("ignorexattr", ignorexattr, true),
FUSE_OPT_KEY("-V", KEY_VERSION),
FUSE_OPT_KEY("--version", KEY_VERSION),
FUSE_OPT_KEY("-h", KEY_HELP),
FUSE_OPT_KEY("--help", KEY_HELP),
FUSE_OPT_KEY("-?", KEY_HELP),
FUSE_OPT_END
};
static int get_stat(const char *path, struct stat *stbuf);
int file_exists_or_set_null(char **path);
static pthread_once_t path_cvt_once = PTHREAD_ONCE_INIT;
static pthread_key_t path_cvt_tsd_key;
static void path_cvt_tsd_key_init(void) {
pthread_key_create(&path_cvt_tsd_key, free);
}
static const char *path_cvt(const char *path) {
char *r, *t;
int l;
pthread_once(&path_cvt_once, path_cvt_tsd_key_init);
if ((r = pthread_getspecific(path_cvt_tsd_key)))
free(r);
t = malloc((l = strlen(base_directory)+strlen(path))+1);
assert(t);
sprintf(t, "%s%s", base_directory, path);
if (l > 1 && t[l-1] == '/')
t[l-1] = 0;
r = ne_path_escape(t);
free(t);
pthread_setspecific(path_cvt_tsd_key, r);
return r;
}
static int simple_propfind_with_redirect(
ne_session *session,
const char *path,
int depth,
const ne_propname *props,
ne_props_result results,
void *userdata) {
int i, ret;
for (i = 0; i < MAX_REDIRECTS; i++) {
const ne_uri *u;
if ((ret = ne_simple_propfind(session, path, depth, props, results, userdata)) != NE_REDIRECT)
return ret;
if (!(u = ne_redirect_location(session)))
break;
if (!session_is_local(u))
break;
if (debug)
log_print(LOG_DEBUG, "REDIRECT FROM '%s' to '%s'", path, u->path);
path = u->path;
}
return ret;
}
static int proppatch_with_redirect(
ne_session *session,
const char *path,
const ne_proppatch_operation *ops) {
int i, ret;
for (i = 0; i < MAX_REDIRECTS; i++) {
const ne_uri *u;
if ((ret = ne_proppatch(session, path, ops)) != NE_REDIRECT)
return ret;
if (!(u = ne_redirect_location(session)))
break;
if (!session_is_local(u))
break;
if (debug)
log_print(LOG_DEBUG, "REDIRECT FROM '%s' to '%s'", path, u->path);
path = u->path;
}
return ret;
}
static void fill_stat(struct stat *st, const ne_prop_result_set *results, bool *is_deleted, int is_dir) {
const char *e, *gcl, *glm, *cd, *ev;
//const char *rt;
//const ne_propname resourcetype = { "DAV:", "resourcetype" };
const ne_propname executable = { "http://apache.org/dav/props/", "executable" };
const ne_propname getcontentlength = { "DAV:", "getcontentlength" };
const ne_propname getlastmodified = { "DAV:", "getlastmodified" };
const ne_propname creationdate = { "DAV:", "creationdate" };
const ne_propname event = { "DAV:", "event" };
assert(st && results);
//rt = ne_propset_value(results, &resourcetype);
e = ne_propset_value(results, &executable);
gcl = ne_propset_value(results, &getcontentlength);
glm = ne_propset_value(results, &getlastmodified);
cd = ne_propset_value(results, &creationdate);
if (is_deleted != NULL) {
ev = ne_propset_value(results, &event);
if (ev == NULL) {
*is_deleted = false;
}
else {
log_print(LOG_DEBUG, "DAV:event=%s", ev);
*is_deleted = (strcmp(ev, "DESTROYED") == 0);
}
}
memset(st, 0, sizeof(struct stat));
if (is_dir) {
st->st_mode = S_IFDIR | 0777;
st->st_nlink = 3; /* find will ignore this directory if nlin <= and st_size == 0 */
st->st_size = 4096;
} else {
st->st_mode = S_IFREG | (e && (*e == 'T' || *e == 't') ? 0777 : 0666);
st->st_nlink = 1;
st->st_size = gcl ? atoll(gcl) : 0;
}
st->st_atime = time(NULL);
st->st_mtime = glm ? ne_rfc1123_parse(glm) : 0;
st->st_ctime = cd ? ne_iso8601_parse(cd) : 0;
st->st_blocks = (st->st_size+511)/512;
/*log_print(LOG_DEBUG, "a: %u; m: %u; c: %u", st->st_atime, st->st_mtime, st->st_ctime);*/
st->st_mode &= ~mask;
st->st_uid = getuid();
st->st_gid = getgid();
}
char *strip_trailing_slash(char *fn, int *is_dir) {
size_t l = strlen(fn);
assert(fn);
assert(is_dir);
assert(l > 0);
if ((*is_dir = (fn[l-1] == '/')))
fn[l-1] = 0;
return fn;
}
static void getdir_propfind_callback(__unused void *userdata, const ne_uri *u, const ne_prop_result_set *results) {
char *path = NULL;
int is_dir = 0;
struct fusedav_config *config = fuse_get_context()->private_data;
struct stat_cache_value value;
bool is_deleted;
path = strdup(u->path);
//log_print(LOG_DEBUG, "getdir_propfind_callback: %s", path);
strip_trailing_slash(path, &is_dir);
fill_stat(&value.st, results, &is_deleted, is_dir);
value.prepopulated = false;
if (is_deleted)
stat_cache_delete(config->cache, path);
else
stat_cache_value_set(config->cache, path, &value);
free(path);
}
static void getdir_cache_callback(
const char *root,
const char *fn,
void *user) {
struct fill_info *f = user;
char path[PATH_MAX];
char *h;
assert(f);
snprintf(path, sizeof(path), "%s/%s", !strcmp(root, "/") ? "" : root, fn);
h = ne_path_unescape(fn);
//log_print(LOG_DEBUG, "getdir_cache_callback fn: %s", h);
f->filler(f->buf, h, NULL, 0);
free(h);
}
static int update_directory(const char *path, bool attempt_progessive_update) {
struct fusedav_config *config = fuse_get_context()->private_data;
bool needs_update = true;
ne_session *session;
unsigned int min_generation;
time_t last_updated;
time_t timestamp;
char *update_path = NULL;
int ne_result;
if (!(session = session_get(1)))
return -EIO;
// Attempt to freshen the cache.
if (attempt_progessive_update && config->progressive_propfind) {
timestamp = time(NULL);
last_updated = stat_cache_read_updated_children(config->cache, path);
asprintf(&update_path, "%s?changes_since=%lu", path, last_updated - CLOCK_SKEW);
log_print(LOG_DEBUG, "Freshening directory data: %s", update_path);
// @TODO: Server should not return 404 on no events.
ne_result = simple_propfind_with_redirect(session, update_path, NE_DEPTH_ONE, query_properties, getdir_propfind_callback, NULL);
if (ne_result != NE_FAILED && ne_result != NE_CONNECT && ne_result != NE_TIMEOUT) {
log_print(LOG_DEBUG, "Freshen PROPFIND success");
needs_update = false;
}
else {
log_print(LOG_DEBUG, "Freshen PROPFIND failed: %s", ne_get_error(session));
}
free(update_path);
}
// If we had *no data* or freshening failed, rebuild the cache
// with a full PROPFIND.
if (needs_update) {
log_print(LOG_DEBUG, "Replacing directory data: %s", path);
timestamp = time(NULL);
min_generation = stat_cache_get_local_generation();
if (simple_propfind_with_redirect(session, path, NE_DEPTH_ONE, query_properties, getdir_propfind_callback, NULL) != NE_OK) {
log_print(LOG_WARNING, "Complete PROPFIND failed: %s", ne_get_error(session));
return -ENOENT;
}
stat_cache_delete_older(config->cache, path, min_generation);
}
// Mark the directory contents as updated.
log_print(LOG_DEBUG, "Marking directory %s as updated at timestamp %lu.", path, timestamp);
stat_cache_updated_children(config->cache, path, timestamp);
return 0;
}
static int dav_readdir(
const char *path,
void *buf,
fuse_fill_dir_t filler,
__unused ne_off_t offset,
__unused struct fuse_file_info *fi) {
struct fusedav_config *config = fuse_get_context()->private_data;
struct fill_info f;
int ret;
path = path_cvt(path);
//log_print(LOG_DEBUG, "getdir(%s)", path);
f.buf = buf;
f.filler = filler;
f.root = path;
filler(buf, ".", NULL, 0);
filler(buf, "..", NULL, 0);
// First, attempt to hit the cache.
ret = stat_cache_enumerate(config->cache, path, getdir_cache_callback, &f, false);
if (ret < 0) {
if (debug) {
if (ret == -STAT_CACHE_OLD_DATA) log_print(LOG_DEBUG, "DIR-CACHE-TOO-OLD: %s", path);
else log_print(LOG_DEBUG, "DIR-CACHE-MISS: %s", path);
}
log_print(LOG_DEBUG, "Updating directory: %s", path);
if (update_directory(path, (ret == -STAT_CACHE_OLD_DATA)) != 0) {
log_print(LOG_ERR, "Failed to update directory: %s", path);
return -1;
}
// Output the new data, skipping any cache freshness checks
// (which should pass, anyway).
stat_cache_enumerate(config->cache, path, getdir_cache_callback, &f, true);
}
return 0;
}
static void getattr_propfind_callback(void *userdata, const ne_uri *u, const ne_prop_result_set *results) {
struct fusedav_config *config = fuse_get_context()->private_data;
struct stat *st = (struct stat*) userdata;
struct stat_cache_value value;
char *path;
int is_dir;
assert(st);
path = strdup(u->path);
//log_print(LOG_DEBUG, "getattr_propfind_callback: %s", fn);
strip_trailing_slash(path, &is_dir);
//log_print(LOG_DEBUG, "stripped: %s (isdir: %d)", fn, is_dir);
fill_stat(st, results, NULL, is_dir);
value.st = *st;
value.prepopulated = false;
stat_cache_value_set(config->cache, path, &value);
free(path);
}
static int get_stat(const char *path, struct stat *stbuf) {
struct fusedav_config *config = fuse_get_context()->private_data;
ne_session *session;
struct stat_cache_value *response;
char *parent_path;
int is_dir = 0;
time_t parent_children_update_ts;
//log_print(LOG_DEBUG, "getdir(%s)", path);
memset(stbuf, 0, sizeof(struct stat));
//log_print(LOG_DEBUG, "get_stat(%s, stbuf)", path);
if (!(session = session_get(1))) {
memset(stbuf, 0, sizeof(struct stat));
return -EIO;
}
// Check if we can directly hit this file in the stat cache.
if ((response = stat_cache_value_get(config->cache, path))) {
*stbuf = response->st;
free(response);
//print_stat(stbuf, "get_stat from cache");
return stbuf->st_mode == 0 ? -ENOENT : 0;
}
log_print(LOG_DEBUG, "STAT-CACHE-MISS");
// If it's the root directory, just do a single PROPFIND.
log_print(LOG_DEBUG, "Checking if path %s matches base directory: %s", path, base_directory);
if (!config->refresh_dir_for_file_stat || strcmp(path, base_directory) == 0) {
log_print(LOG_DEBUG, "Performing zero-depth PROPFIND on base directory: %s", base_directory);
if (simple_propfind_with_redirect(session, path, NE_DEPTH_ZERO, query_properties, getattr_propfind_callback, stbuf) != NE_OK) {
stat_cache_delete(config->cache, path);
log_print(LOG_NOTICE, "PROPFIND failed: %s", ne_get_error(session));
memset(stbuf, 0, sizeof(struct stat));
return -ENOENT;
}
return 0;
}
// If we're here, refresh_dir_for_file_stat is set, so we're updating
// directory stat data to, in turn, update the desired file stat data.
// If it's not found, check the freshness of its directory.
parent_path = strip_trailing_slash(ne_path_parent(path), &is_dir);
log_print(LOG_DEBUG, "Getting parent path entry: %s", parent_path);
parent_children_update_ts = stat_cache_read_updated_children(config->cache, parent_path);
log_print(LOG_DEBUG, "Parent was updated: %lu", parent_children_update_ts);
// If the parent directory is out of date, update it.
if (parent_children_update_ts < (time(NULL) - STAT_CACHE_NEGATIVE_TTL)) {
log_print(LOG_DEBUG, "Updating directory: %s", parent_path);
update_directory(parent_path, (parent_children_update_ts > 0));
}
// Try again to hit the file in the stat cache.
if ((response = stat_cache_value_get(config->cache, path))) {
log_print(LOG_DEBUG, "Hit updated cache: %s", path);
*stbuf = response->st;
free(response);
return stbuf->st_mode == 0 ? -ENOENT : 0;
}
// If it's still not found, return that it doesn't exist.
memset(stbuf, 0, sizeof(struct stat));
return -ENOENT;
}
static int dav_getattr(const char *path, struct stat *stbuf) {
struct fusedav_config *config = fuse_get_context()->private_data;
int r;
path = path_cvt(path);
//log_print(LOG_DEBUG, "getattr(%s)", path);
r = get_stat(path, stbuf);
// Zero-out unused nanosecond fields.
stbuf->st_atim.tv_nsec = 0;
stbuf->st_mtim.tv_nsec = 0;
stbuf->st_ctim.tv_nsec = 0;
if (config->uid)
stbuf->st_uid = config->uid;
if (config->gid)
stbuf->st_gid = config->gid;
if (S_ISDIR(stbuf->st_mode) && config->dir_mode)
stbuf->st_mode = S_IFDIR | config->dir_mode;
if (S_ISREG(stbuf->st_mode) && config->file_mode)
stbuf->st_mode = S_IFREG | config->file_mode;
return r;
}
static int dav_unlink(const char *path) {
struct fusedav_config *config = fuse_get_context()->private_data;
int r;
struct stat st;
ne_session *session;
path = path_cvt(path);
if (debug)
log_print(LOG_DEBUG, "unlink(%s)", path);
if (!(session = session_get(1)))
return -EIO;
if ((r = get_stat(path, &st)) < 0)
return r;
if (!S_ISREG(st.st_mode))
return -EISDIR;
if (ne_delete(session, path)) {
log_print(LOG_ERR, "DELETE failed: %s", ne_get_error(session));
return -ENOENT;
}
ldb_filecache_delete(config->cache, path);
stat_cache_delete(config->cache, path);
stat_cache_delete_parent(config->cache, path);
return 0;
}
static int dav_rmdir(const char *path) {
struct fusedav_config *config = fuse_get_context()->private_data;
char fn[PATH_MAX];
int r;
struct stat st;
ne_session *session;
path = path_cvt(path);
if (debug)
log_print(LOG_DEBUG, "rmdir(%s)", path);
if (!(session = session_get(1)))
return -EIO;
if ((r = get_stat(path, &st)) < 0)
return r;
if (!S_ISDIR(st.st_mode))
return -ENOTDIR;
snprintf(fn, sizeof(fn), "%s/", path);
if (ne_delete(session, fn)) {
log_print(LOG_ERR, "DELETE failed: %s", ne_get_error(session));
return -ENOENT;
}
stat_cache_delete(config->cache, path);
stat_cache_delete_parent(config->cache, path);
return 0;
}
static int dav_mkdir(const char *path, mode_t mode) {
struct fusedav_config *config = fuse_get_context()->private_data;
struct stat_cache_value value;
char fn[PATH_MAX];
ne_session *session;
path = path_cvt(path);
log_print(LOG_DEBUG, "mkdir(%s, %04o)", path, mode);
if (!(session = session_get(1)))
return -EIO;
snprintf(fn, sizeof(fn), "%s/", path);
if (ne_mkcol(session, fn)) {
log_print(LOG_ERR, "MKCOL failed: %s", ne_get_error(session));
return -ENOENT;
}
// Prepopulate stat cache.
value.st.st_mode = mode | S_IFDIR;
value.st.st_nlink = 3;
value.st.st_size = 0;
value.st.st_atime = time(NULL);
value.st.st_mtime = value.st.st_atime;
value.st.st_ctime = value.st.st_mtime;
value.st.st_blksize = 0;
value.st.st_blocks = 8;
value.st.st_uid = getuid();
value.st.st_gid = getgid();
value.prepopulated = true;
stat_cache_value_set(config->cache, path, &value);
//stat_cache_delete(config->cache, path);
//stat_cache_delete_parent(config->cache, path);
return 0;
}
static int dav_rename(const char *from, const char *to) {
struct fusedav_config *config = fuse_get_context()->private_data;
ne_session *session;
int r = 0;
struct stat st;
char fn[PATH_MAX], *_from;
from = _from = strdup(path_cvt(from));
assert(from);
to = path_cvt(to);
if (debug)
log_print(LOG_DEBUG, "rename(%s, %s)", from, to);
if (!(session = session_get(1))) {
r = -EIO;
goto finish;
}
if ((r = get_stat(from, &st)) < 0)
goto finish;
if (S_ISDIR(st.st_mode)) {
snprintf(fn, sizeof(fn), "%s/", from);
from = fn;
}
if (ne_move(session, 1, from, to)) {
log_print(LOG_ERR, "MOVE failed: %s", ne_get_error(session));
r = -ENOENT;
goto finish;
}
stat_cache_delete(config->cache, from);
stat_cache_delete_parent(config->cache, from);
stat_cache_delete(config->cache, to);
stat_cache_delete_parent(config->cache, to);
finish:
free(_from);
return r;
}
static int dav_release(const char *path, __unused struct fuse_file_info *info) {
struct fusedav_config *config = fuse_get_context()->private_data;
int ret = 0;
path = path_cvt(path);
if (debug) {
log_print(LOG_DEBUG, "release(%s)", path);
}
if ((ret = ldb_filecache_release(config->cache, path, info)) < 0) {
log_print(LOG_ERR, "dav_write: error on ldb_filecache_sync: %d::%s", ret, path);
}
return ret;
}
static int dav_fsync(const char *path, __unused int isdatasync, __unused struct fuse_file_info *info) {
struct fusedav_config *config = fuse_get_context()->private_data;
int ret = 0;
path = path_cvt(path);
if (debug)
log_print(LOG_DEBUG, "fsync(%s)", path);
if ((ret = ldb_filecache_sync(config->cache, path, info)) < 0) {
goto finish;
}
finish:
return ret;
}
static int dav_mknod(const char *path, mode_t mode, __unused dev_t rdev) {
struct fusedav_config *config = fuse_get_context()->private_data;
struct stat_cache_value value;
//char tempfile[PATH_MAX];
//int fd;
//ne_session *session;
path = path_cvt(path);
if (debug)
log_print(LOG_DEBUG, "mknod(%s)", path);
/*
if (!(session = session_get(1)))
return -EIO;
if (!S_ISREG(mode))
return -ENOTSUP;
snprintf(tempfile, sizeof(tempfile), "%s/fusedav-empty-XXXXXX", "/tmp");
if ((fd = mkstemp(tempfile)) < 0)
return -errno;
unlink(tempfile);
if (ne_put(session, path, fd)) {
log_print(LOG_ERR, "mknod:PUT failed: %s", ne_get_error(session));
close(fd);
return -EACCES;
}
if (debug)
log_print(LOG_DEBUG, "mknod(%s):PUT complete", path);
close(fd);
*/
// Prepopulate stat cache.
value.st.st_mode = mode | S_IFREG;
value.st.st_nlink = 1;
value.st.st_size = 0;
value.st.st_atime = time(NULL);
value.st.st_mtime = value.st.st_atime;
value.st.st_ctime = value.st.st_mtime;
value.st.st_blksize = 0;
value.st.st_blocks = 8;
value.st.st_uid = getuid();
value.st.st_gid = getgid();
value.prepopulated = true;
stat_cache_value_set(config->cache, path, &value);
//stat_cache_delete(config->cache, path);
//stat_cache_delete_parent(config->cache, path);
return 0;
}
static int dav_open(const char *path, struct fuse_file_info *info) {
struct fusedav_config *config = fuse_get_context()->private_data;
int ret = 0;
assert(info);
log_print(LOG_DEBUG, "dav_open: open(%s)", path);
path = path_cvt(path);
if ((ret = ldb_filecache_open(config->cache_path, config->cache, path, info, info->flags & O_TRUNC)) < 0) {
log_print(LOG_ERR, "dav_open: Failed ldb_filecache_open");
return ret;
}
if (debug) {
log_print(LOG_ERR, "dav_open: after ldb_filecache_open");
}
return ret;
}
static int dav_read(const char *path, char *buf, size_t size, ne_off_t offset, struct fuse_file_info *info) {
ssize_t bytes_read;
path = path_cvt(path);
if (debug) {
log_print(LOG_DEBUG, "read(%s, %lu+%lu)", path, (unsigned long) offset, (unsigned long) size);
}
if ((bytes_read = ldb_filecache_read(info, buf, size, offset)) < 0) {
log_print(LOG_ERR, "dav_read: ldb_filecache_read returns error");
goto finish;
}
finish:
return bytes_read;
}
static int dav_write(const char *path, const char *buf, size_t size, ne_off_t offset, struct fuse_file_info *info) {
ssize_t bytes_written;
path = path_cvt(path);
if (debug) {
log_print(LOG_DEBUG, "write(%s, %lu+%lu)", path, (unsigned long) offset, (unsigned long) size);
}
if ((bytes_written = ldb_filecache_write(info, buf, size, offset)) < 0) {
log_print(LOG_ERR, "dav_read: ldb_filecache_read returns error");
goto finish;
}
finish:
return bytes_written;
}
static int dav_ftruncate(const char *path, ne_off_t size, struct fuse_file_info *info) {
int ret = 0;
ne_session *session;
path = path_cvt(path);
if (debug)
log_print(LOG_DEBUG, "truncate(%s, %lu)", path, (unsigned long) size);
if (!(session = session_get(1)))
ret = -EIO;
goto finish;
if (ldb_filecache_truncate(info, size) < 0) {
ret = -errno;
goto finish;
}
finish:
return ret;
}
static int dav_utimens(const char *path, const struct timespec tv[2]) {
struct fusedav_config *config = fuse_get_context()->private_data;
ne_session *session;
const ne_propname getlastmodified = { "DAV:", "getlastmodified" };
ne_proppatch_operation ops[2];
int r = 0;
char *date;
//log_print(LOG_DEBUG, "utimens(%s, %lu, %lu)", path, tv[0].tv_sec, tv[1].tv_sec);
if (config->ignoreutimens) {
//log_print(LOG_DEBUG, "Skipping utimens attribute setting.");
return r;
}
assert(path);
path = path_cvt(path);
ops[0].name = &getlastmodified;
ops[0].type = ne_propset;
ops[0].value = date = ne_rfc1123_date(tv[1].tv_sec);
ops[1].name = NULL;
if (!(session = session_get(1))) {
r = -EIO;
goto finish;
}
if (proppatch_with_redirect(session, path, ops)) {
log_print(LOG_ERR, "PROPPATCH failed: %s", ne_get_error(session));
r = -ENOTSUP;
goto finish;
}
// @TODO: Before public release: Update the stat cache instead.
stat_cache_delete(config->cache, path);
finish:
free(date);
return r;
}
static const char *fix_xattr(const char *name) {
assert(name);
if (!strcmp(name, MIME_XATTR))
return "user.webdav(DAV:;getcontenttype)";
return name;
}
struct listxattr_info {
char *list;
size_t space, size;
};
static int listxattr_iterator(
void *userdata,
const ne_propname *pname,
const char *value,
__unused const ne_status *status) {
struct listxattr_info *l = userdata;
int n;
assert(l);
if (!value || !pname)
return -1;
if (l->list) {
n = snprintf(l->list, l->space, "user.webdav(%s;%s)", pname->nspace, pname->name) + 1;
if (n >= (int) l->space) {
l->size += l->space;
l->space = 0;
return 1;
} else {
l->size += n;
l->space -= n;
if (l->list)
l->list += n;
return 0;
}
} else {
/* Calculate space */
l->size += strlen(pname->nspace) + strlen(pname->name) + 15;
return 0;
}
}