/** @internal @This is called when there is input data.
*
* @param upipe description structure of the pipe
* @param uref input uref structure
* @param upump_p reference to pump that generated the buffer
*/
static void upipe_burst_input(struct upipe *upipe, struct uref *uref,
struct upump **upump_p)
{
struct upipe_burst *upipe_burst = upipe_burst_from_upipe(upipe);
ulist_add(&upipe_burst->urefs, uref_to_uchain(uref));
upipe_burst_throw_update(upipe, false);
ueventfd_write(&upipe_burst->ueventfd);
}
/* allocate es configuration */
static struct es_conf *es_conf_alloc(struct udict_mgr *mgr,
uint64_t id, struct uchain *list)
{
struct es_conf *conf = malloc(sizeof(struct es_conf));
if (unlikely(conf == NULL))
return NULL;
memset(conf, 0, sizeof(struct es_conf));
uchain_init(&conf->uchain);
if (list) {
ulist_add(list, &conf->uchain);
}
conf->options = udict_alloc(mgr, 0);
conf->id = id;
return conf;
}
/** @internal @This checks an URI.
*
* @param upipe description structure of the pipe
* @param flow_def the current flow definition
* @param uri the uri
* @return an error code
*/
static int upipe_m3u_reader_process_uri(struct upipe *upipe,
struct uref *flow_def,
const char *uri)
{
struct upipe_m3u_reader *upipe_m3u_reader =
upipe_m3u_reader_from_upipe(upipe);
upipe_verbose_va(upipe, "uri %s", uri);
UBASE_RETURN(uref_flow_match_def(flow_def, M3U_FLOW_DEF));
struct uref *item;
UBASE_RETURN(upipe_m3u_reader_get_item(upipe, flow_def, &item));
UBASE_RETURN(uref_m3u_set_uri(item, uri));
if (upipe_m3u_reader->key)
UBASE_RETURN(uref_m3u_playlist_key_copy(item, upipe_m3u_reader->key));
upipe_m3u_reader->item = NULL;
ulist_add(&upipe_m3u_reader->items, uref_to_uchain(item));
return UBASE_ERR_NONE;
}
/** @internal @This catches events thrown by pipes.
*
* @param uprobe pointer to probe
* @param upipe pointer to pipe throwing the event
* @param event event thrown
* @param args optional event-specific parameters
* @return an error code
*/
static int uprobe_pfx_throw(struct uprobe *uprobe, struct upipe *upipe,
int event, va_list args)
{
struct uprobe_pfx *uprobe_pfx = uprobe_pfx_from_uprobe(uprobe);
if (event != UPROBE_LOG)
return uprobe_throw_next(uprobe, upipe, event, args);
struct ulog *ulog = va_arg(args, struct ulog *);
enum uprobe_log_level level = ulog->level;
if (uprobe->next == NULL || uprobe_pfx->min_level > level)
return UBASE_ERR_NONE;
struct ulog_pfx ulog_pfx;
ulog_pfx.tag = likely(uprobe_pfx->name != NULL) ?
uprobe_pfx->name : "unknown";
ulist_add(&ulog->prefixes, ulog_pfx_to_uchain(&ulog_pfx));
return uprobe_throw(uprobe->next, upipe, event, ulog);
}
/** @internal @This merges the new access unit into a possibly existing
* incomplete PES, and outputs the PES if possible.
*
* @param upipe description structure of the pipe
* @param uref uref structure
* @param upump_p reference to pump that generated the buffer
* @return false if the input must be blocked
*/
static bool upipe_ts_pese_handle(struct upipe *upipe, struct uref *uref,
struct upump **upump_p)
{
struct upipe_ts_pese *upipe_ts_pese = upipe_ts_pese_from_upipe(upipe);
const char *def;
if (unlikely(ubase_check(uref_flow_get_def(uref, &def)))) {
upipe_ts_pese_work(upipe, NULL);
uref_ts_flow_get_pes_id(uref, &upipe_ts_pese->pes_id);
upipe_ts_pese->pes_header_size = 0;
uref_ts_flow_get_pes_header(uref, &upipe_ts_pese->pes_header_size);
upipe_ts_pese->pes_min_duration = 0;
uref_ts_flow_get_pes_min_duration(uref,
&upipe_ts_pese->pes_min_duration);
upipe_ts_pese->input_latency = 0;
uref_clock_get_latency(uref, &upipe_ts_pese->input_latency);
if (unlikely(!ubase_check(uref_clock_set_latency(uref,
upipe_ts_pese->input_latency +
upipe_ts_pese->pes_min_duration))))
upipe_throw_fatal(upipe, UBASE_ERR_ALLOC);
upipe_ts_pese_store_flow_def(upipe, NULL);
upipe_ts_pese_require_ubuf_mgr(upipe, uref);
return true;
}
if (upipe_ts_pese->flow_def == NULL)
return false;
uint64_t uref_duration = upipe_ts_pese->pes_min_duration;
uref_clock_get_duration(uref, &uref_duration);
size_t uref_size = 0;
uref_block_size(uref, &uref_size);
uref_block_delete_start(uref);
ulist_add(&upipe_ts_pese->next_pes, uref_to_uchain(uref));
upipe_ts_pese->next_pes_duration += uref_duration;
upipe_ts_pese->next_pes_size += uref_size;
if (upipe_ts_pese->next_pes_duration >= upipe_ts_pese->pes_min_duration)
upipe_ts_pese_work(upipe, upump_p);
return true;
}
/*
* this adds all existing backrefs (inline backrefs, backrefs and delayed
* refs) for the given bytenr to the refs list, merges duplicates and resolves
* indirect refs to their parent bytenr.
* When roots are found, they're added to the roots list
*
* FIXME some caching might speed things up
*/
static int find_parent_nodes(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytenr,
u64 time_seq, struct ulist *refs,
struct ulist *roots, const u64 *extent_item_pos)
{
struct btrfs_key key;
struct btrfs_path *path;
struct btrfs_delayed_ref_root *delayed_refs = NULL;
struct btrfs_delayed_ref_head *head;
int info_level = 0;
int ret;
struct list_head prefs_delayed;
struct list_head prefs;
struct __prelim_ref *ref;
INIT_LIST_HEAD(&prefs);
INIT_LIST_HEAD(&prefs_delayed);
key.objectid = bytenr;
key.offset = (u64)-1;
if (btrfs_fs_incompat(fs_info, SKINNY_METADATA))
key.type = BTRFS_METADATA_ITEM_KEY;
else
key.type = BTRFS_EXTENT_ITEM_KEY;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
if (!trans)
path->search_commit_root = 1;
/*
* grab both a lock on the path and a lock on the delayed ref head.
* We need both to get a consistent picture of how the refs look
* at a specified point in time
*/
again:
head = NULL;
ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
if (ret < 0)
goto out;
BUG_ON(ret == 0);
if (trans) {
/*
* look if there are updates for this ref queued and lock the
* head
*/
delayed_refs = &trans->transaction->delayed_refs;
spin_lock(&delayed_refs->lock);
head = btrfs_find_delayed_ref_head(trans, bytenr);
if (head) {
if (!mutex_trylock(&head->mutex)) {
atomic_inc(&head->node.refs);
spin_unlock(&delayed_refs->lock);
btrfs_release_path(path);
/*
* Mutex was contended, block until it's
* released and try again
*/
mutex_lock(&head->mutex);
mutex_unlock(&head->mutex);
btrfs_put_delayed_ref(&head->node);
goto again;
}
ret = __add_delayed_refs(head, time_seq,
&prefs_delayed);
mutex_unlock(&head->mutex);
if (ret) {
spin_unlock(&delayed_refs->lock);
goto out;
}
}
spin_unlock(&delayed_refs->lock);
}
if (path->slots[0]) {
struct extent_buffer *leaf;
int slot;
path->slots[0]--;
leaf = path->nodes[0];
slot = path->slots[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
if (key.objectid == bytenr &&
(key.type == BTRFS_EXTENT_ITEM_KEY ||
key.type == BTRFS_METADATA_ITEM_KEY)) {
ret = __add_inline_refs(fs_info, path, bytenr,
&info_level, &prefs);
if (ret)
goto out;
ret = __add_keyed_refs(fs_info, path, bytenr,
info_level, &prefs);
if (ret)
goto out;
}
}
btrfs_release_path(path);
list_splice_init(&prefs_delayed, &prefs);
ret = __add_missing_keys(fs_info, &prefs);
if (ret)
goto out;
__merge_refs(&prefs, 1);
ret = __resolve_indirect_refs(fs_info, path, time_seq, &prefs,
extent_item_pos);
if (ret)
goto out;
__merge_refs(&prefs, 2);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
list_del(&ref->list);
WARN_ON(ref->count < 0);
if (ref->count && ref->root_id && ref->parent == 0) {
/* no parent == root of tree */
ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
if (ret < 0)
goto out;
}
if (ref->count && ref->parent) {
struct extent_inode_elem *eie = NULL;
if (extent_item_pos && !ref->inode_list) {
u32 bsz;
struct extent_buffer *eb;
bsz = btrfs_level_size(fs_info->extent_root,
info_level);
eb = read_tree_block(fs_info->extent_root,
ref->parent, bsz, 0);
if (!eb || !extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
ret = -EIO;
goto out;
}
ret = find_extent_in_eb(eb, bytenr,
*extent_item_pos, &eie);
ref->inode_list = eie;
free_extent_buffer(eb);
}
ret = ulist_add_merge(refs, ref->parent,
(uintptr_t)ref->inode_list,
(u64 *)&eie, GFP_NOFS);
if (ret < 0)
goto out;
if (!ret && extent_item_pos) {
/*
* we've recorded that parent, so we must extend
* its inode list here
*/
BUG_ON(!eie);
while (eie->next)
eie = eie->next;
eie->next = ref->inode_list;
}
}
kfree(ref);
}
out:
btrfs_free_path(path);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
list_del(&ref->list);
kfree(ref);
}
while (!list_empty(&prefs_delayed)) {
ref = list_first_entry(&prefs_delayed, struct __prelim_ref,
list);
list_del(&ref->list);
kfree(ref);
}
return ret;
}
static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path,
struct ulist *parents, int level,
struct btrfs_key *key_for_search, u64 time_seq,
u64 wanted_disk_byte,
const u64 *extent_item_pos)
{
int ret = 0;
int slot;
struct extent_buffer *eb;
struct btrfs_key key;
struct btrfs_file_extent_item *fi;
struct extent_inode_elem *eie = NULL, *old = NULL;
u64 disk_byte;
if (level != 0) {
eb = path->nodes[level];
ret = ulist_add(parents, eb->start, 0, GFP_NOFS);
if (ret < 0)
return ret;
return 0;
}
/*
* We normally enter this function with the path already pointing to
* the first item to check. But sometimes, we may enter it with
* slot==nritems. In that case, go to the next leaf before we continue.
*/
if (path->slots[0] >= btrfs_header_nritems(path->nodes[0]))
ret = btrfs_next_old_leaf(root, path, time_seq);
while (!ret) {
eb = path->nodes[0];
slot = path->slots[0];
btrfs_item_key_to_cpu(eb, &key, slot);
if (key.objectid != key_for_search->objectid ||
key.type != BTRFS_EXTENT_DATA_KEY)
break;
fi = btrfs_item_ptr(eb, slot, struct btrfs_file_extent_item);
disk_byte = btrfs_file_extent_disk_bytenr(eb, fi);
if (disk_byte == wanted_disk_byte) {
eie = NULL;
old = NULL;
if (extent_item_pos) {
ret = check_extent_in_eb(&key, eb, fi,
*extent_item_pos,
&eie);
if (ret < 0)
break;
}
if (ret > 0)
goto next;
ret = ulist_add_merge(parents, eb->start,
(uintptr_t)eie,
(u64 *)&old, GFP_NOFS);
if (ret < 0)
break;
if (!ret && extent_item_pos) {
while (old->next)
old = old->next;
old->next = eie;
}
}
next:
ret = btrfs_next_old_item(root, path, time_seq);
}
if (ret > 0)
ret = 0;
return ret;
}
static void __add_item_to_page(struct page *pg, struct item *it)
{
it->owner = pg;
ulist_add(&pg->items, &it->ulist);
__inc_items_num(pg);
}
static void __add_page_to_data(struct data *dt, struct page *pg)
{
pg->owner = dt;
ulist_add(&dt->pages, &pg->ulist);
__inc_pages_and_items_num(dt, pg);
}
static void sanitize_passwd(void) {
struct stat s;
if (stat("/etc/passwd", &s) == -1)
return;
assert(uid_min);
if (arg_debug)
printf("Sanitizing /etc/passwd, UID_MIN %d\n", uid_min);
if (is_link("/etc/passwd")) {
fprintf(stderr, "Error: invalid /etc/passwd\n");
exit(1);
}
FILE *fpin = NULL;
FILE *fpout = NULL;
// open files
/* coverity[toctou] */
fpin = fopen("/etc/passwd", "r");
if (!fpin)
goto errout;
fpout = fopen(RUN_PASSWD_FILE, "w");
if (!fpout)
goto errout;
// read the file line by line
char buf[MAXBUF];
uid_t myuid = getuid();
while (fgets(buf, MAXBUF, fpin)) {
// comments and empty lines
if (*buf == '\0' || *buf == '#')
continue;
// sample line:
// www-data:x:33:33:www-data:/var/www:/bin/sh
// drop lines with uid > 1000 and not the current user
char *ptr = buf;
// advance to uid
while (*ptr != ':' && *ptr != '\0')
ptr++;
if (*ptr == '\0')
goto errout;
char *ptr1 = ptr;
ptr++;
while (*ptr != ':' && *ptr != '\0')
ptr++;
if (*ptr == '\0')
goto errout;
ptr++;
if (*ptr == '\0')
goto errout;
// process uid
int uid;
int rv = sscanf(ptr, "%d:", &uid);
if (rv == 0 || uid < 0)
goto errout;
assert(uid_min);
if (uid < uid_min || uid == 65534) { // on Debian platforms user nobody is 65534
fprintf(fpout, "%s", buf);
continue;
}
if ((uid_t) uid != myuid) {
// store user name - necessary to process /etc/group
*ptr1 = '\0';
char *user = strdup(buf);
if (!user)
errExit("malloc");
ulist_add(user);
continue; // skip line
}
fprintf(fpout, "%s", buf);
}
fclose(fpin);
SET_PERMS_STREAM(fpout, 0, 0, 0644);
fclose(fpout);
// mount-bind tne new password file
if (mount(RUN_PASSWD_FILE, "/etc/passwd", "none", MS_BIND, "mode=400,gid=0") < 0)
errExit("mount");
fs_logger("create /etc/passwd");
return;
errout:
fwarning("failed to clean up /etc/passwd\n");
if (fpin)
fclose(fpin);
if (fpout)
fclose(fpout);
}
/*
* this adds all existing backrefs (inline backrefs, backrefs and delayed
* refs) for the given bytenr to the refs list, merges duplicates and resolves
* indirect refs to their parent bytenr.
* When roots are found, they're added to the roots list
*
* FIXME some caching might speed things up
*/
static int find_parent_nodes(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytenr,
u64 time_seq, struct ulist *refs,
struct ulist *roots, const u64 *extent_item_pos)
{
struct btrfs_key key;
struct btrfs_path *path;
int info_level = 0;
int ret;
struct list_head prefs;
struct __prelim_ref *ref;
struct extent_inode_elem *eie = NULL;
u64 total_refs = 0;
INIT_LIST_HEAD(&prefs);
key.objectid = bytenr;
key.offset = (u64)-1;
if (btrfs_fs_incompat(fs_info, SKINNY_METADATA))
key.type = BTRFS_METADATA_ITEM_KEY;
else
key.type = BTRFS_EXTENT_ITEM_KEY;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
if (ret < 0)
goto out;
BUG_ON(ret == 0);
if (path->slots[0]) {
struct extent_buffer *leaf;
int slot;
path->slots[0]--;
leaf = path->nodes[0];
slot = path->slots[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
if (key.objectid == bytenr &&
(key.type == BTRFS_EXTENT_ITEM_KEY ||
key.type == BTRFS_METADATA_ITEM_KEY)) {
ret = __add_inline_refs(fs_info, path, bytenr,
&info_level, &prefs,
&total_refs);
if (ret)
goto out;
ret = __add_keyed_refs(fs_info, path, bytenr,
info_level, &prefs);
if (ret)
goto out;
}
}
btrfs_release_path(path);
ret = __add_missing_keys(fs_info, &prefs);
if (ret)
goto out;
__merge_refs(&prefs, 1);
ret = __resolve_indirect_refs(fs_info, path, time_seq, &prefs,
extent_item_pos, total_refs);
if (ret)
goto out;
__merge_refs(&prefs, 2);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
WARN_ON(ref->count < 0);
if (roots && ref->count && ref->root_id && ref->parent == 0) {
/* no parent == root of tree */
ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
if (ret < 0)
goto out;
}
if (ref->count && ref->parent) {
if (extent_item_pos && !ref->inode_list &&
ref->level == 0) {
u32 bsz;
struct extent_buffer *eb;
bsz = fs_info->extent_root->nodesize;
eb = read_tree_block(fs_info->extent_root,
ref->parent, bsz, 0);
if (!extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
ret = -EIO;
goto out;
}
ret = find_extent_in_eb(eb, bytenr,
*extent_item_pos, &eie);
free_extent_buffer(eb);
if (ret < 0)
goto out;
ref->inode_list = eie;
}
ret = ulist_add_merge_ptr(refs, ref->parent,
ref->inode_list,
(void **)&eie, GFP_NOFS);
if (ret < 0)
goto out;
if (!ret && extent_item_pos) {
/*
* we've recorded that parent, so we must extend
* its inode list here
*/
BUG_ON(!eie);
while (eie->next)
eie = eie->next;
eie->next = ref->inode_list;
}
eie = NULL;
}
list_del(&ref->list);
kfree(ref);
}
out:
btrfs_free_path(path);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
list_del(&ref->list);
kfree(ref);
}
if (ret < 0)
free_inode_elem_list(eie);
return ret;
}
/*
* this adds all existing backrefs (inline backrefs, backrefs and delayed
* refs) for the given bytenr to the refs list, merges duplicates and resolves
* indirect refs to their parent bytenr.
* When roots are found, they're added to the roots list
*
* FIXME some caching might speed things up
*/
static int find_parent_nodes(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytenr,
u64 time_seq, struct ulist *refs,
struct ulist *roots, const u64 *extent_item_pos)
{
struct btrfs_key key;
struct btrfs_path *path;
struct btrfs_delayed_ref_root *delayed_refs = NULL;
struct btrfs_delayed_ref_head *head;
int info_level = 0;
int ret;
struct list_head prefs_delayed;
struct list_head prefs;
struct __prelim_ref *ref;
struct extent_inode_elem *eie = NULL;
u64 total_refs = 0;
INIT_LIST_HEAD(&prefs);
INIT_LIST_HEAD(&prefs_delayed);
key.objectid = bytenr;
key.offset = (u64)-1;
if (btrfs_fs_incompat(fs_info, SKINNY_METADATA))
key.type = BTRFS_METADATA_ITEM_KEY;
else
key.type = BTRFS_EXTENT_ITEM_KEY;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
if (!trans) {
path->search_commit_root = 1;
path->skip_locking = 1;
}
/*
* grab both a lock on the path and a lock on the delayed ref head.
* We need both to get a consistent picture of how the refs look
* at a specified point in time
*/
again:
head = NULL;
ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
if (ret < 0)
goto out;
BUG_ON(ret == 0);
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
if (trans && likely(trans->type != __TRANS_DUMMY)) {
#else
if (trans) {
#endif
/*
* look if there are updates for this ref queued and lock the
* head
*/
delayed_refs = &trans->transaction->delayed_refs;
spin_lock(&delayed_refs->lock);
head = btrfs_find_delayed_ref_head(trans, bytenr);
if (head) {
if (!mutex_trylock(&head->mutex)) {
atomic_inc(&head->node.refs);
spin_unlock(&delayed_refs->lock);
btrfs_release_path(path);
/*
* Mutex was contended, block until it's
* released and try again
*/
mutex_lock(&head->mutex);
mutex_unlock(&head->mutex);
btrfs_put_delayed_ref(&head->node);
goto again;
}
spin_unlock(&delayed_refs->lock);
ret = __add_delayed_refs(head, time_seq,
&prefs_delayed, &total_refs);
mutex_unlock(&head->mutex);
if (ret)
goto out;
} else {
spin_unlock(&delayed_refs->lock);
}
}
if (path->slots[0]) {
struct extent_buffer *leaf;
int slot;
path->slots[0]--;
leaf = path->nodes[0];
slot = path->slots[0];
btrfs_item_key_to_cpu(leaf, &key, slot);
if (key.objectid == bytenr &&
(key.type == BTRFS_EXTENT_ITEM_KEY ||
key.type == BTRFS_METADATA_ITEM_KEY)) {
ret = __add_inline_refs(fs_info, path, bytenr,
&info_level, &prefs,
&total_refs);
if (ret)
goto out;
ret = __add_keyed_refs(fs_info, path, bytenr,
info_level, &prefs);
if (ret)
goto out;
}
}
btrfs_release_path(path);
list_splice_init(&prefs_delayed, &prefs);
ret = __add_missing_keys(fs_info, &prefs);
if (ret)
goto out;
__merge_refs(&prefs, 1);
ret = __resolve_indirect_refs(fs_info, path, time_seq, &prefs,
extent_item_pos, total_refs);
if (ret)
goto out;
__merge_refs(&prefs, 2);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
WARN_ON(ref->count < 0);
if (roots && ref->count && ref->root_id && ref->parent == 0) {
/* no parent == root of tree */
ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
if (ret < 0)
goto out;
}
if (ref->count && ref->parent) {
if (extent_item_pos && !ref->inode_list &&
ref->level == 0) {
u32 bsz;
struct extent_buffer *eb;
bsz = btrfs_level_size(fs_info->extent_root,
ref->level);
eb = read_tree_block(fs_info->extent_root,
ref->parent, bsz, 0);
if (!eb || !extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
ret = -EIO;
goto out;
}
btrfs_tree_read_lock(eb);
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
ret = find_extent_in_eb(eb, bytenr,
*extent_item_pos, &eie);
btrfs_tree_read_unlock_blocking(eb);
free_extent_buffer(eb);
if (ret < 0)
goto out;
ref->inode_list = eie;
}
ret = ulist_add_merge_ptr(refs, ref->parent,
ref->inode_list,
(void **)&eie, GFP_NOFS);
if (ret < 0)
goto out;
if (!ret && extent_item_pos) {
/*
* we've recorded that parent, so we must extend
* its inode list here
*/
BUG_ON(!eie);
while (eie->next)
eie = eie->next;
eie->next = ref->inode_list;
}
eie = NULL;
}
list_del(&ref->list);
kmem_cache_free(btrfs_prelim_ref_cache, ref);
}
out:
btrfs_free_path(path);
while (!list_empty(&prefs)) {
ref = list_first_entry(&prefs, struct __prelim_ref, list);
list_del(&ref->list);
kmem_cache_free(btrfs_prelim_ref_cache, ref);
}
while (!list_empty(&prefs_delayed)) {
ref = list_first_entry(&prefs_delayed, struct __prelim_ref,
list);
list_del(&ref->list);
kmem_cache_free(btrfs_prelim_ref_cache, ref);
}
if (ret < 0)
free_inode_elem_list(eie);
return ret;
}
static void free_leaf_list(struct ulist *blocks)
{
struct ulist_node *node = NULL;
struct extent_inode_elem *eie;
struct ulist_iterator uiter;
ULIST_ITER_INIT(&uiter);
while ((node = ulist_next(blocks, &uiter))) {
if (!node->aux)
continue;
eie = (struct extent_inode_elem *)(uintptr_t)node->aux;
free_inode_elem_list(eie);
node->aux = 0;
}
ulist_free(blocks);
}
/*
* Finds all leafs with a reference to the specified combination of bytenr and
* offset. key_list_head will point to a list of corresponding keys (caller must
* free each list element). The leafs will be stored in the leafs ulist, which
* must be freed with ulist_free.
*
* returns 0 on success, <0 on error
*/
static int btrfs_find_all_leafs(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytenr,
u64 time_seq, struct ulist **leafs,
const u64 *extent_item_pos)
{
int ret;
*leafs = ulist_alloc(GFP_NOFS);
if (!*leafs)
return -ENOMEM;
ret = find_parent_nodes(trans, fs_info, bytenr,
time_seq, *leafs, NULL, extent_item_pos);
if (ret < 0 && ret != -ENOENT) {
free_leaf_list(*leafs);
return ret;
}
return 0;
}
static int upipe_m3u_reader_process_media(struct upipe *upipe,
struct uref *flow_def,
const char *line)
{
struct upipe_m3u_reader *upipe_m3u_reader =
upipe_m3u_reader_from_upipe(upipe);
if (!ubase_check(uref_flow_match_def(flow_def, M3U_FLOW_DEF)) &&
!ubase_check(uref_flow_match_def(flow_def, MASTER_FLOW_DEF)))
return UBASE_ERR_INVALID;
UBASE_RETURN(uref_flow_set_def(flow_def, MASTER_FLOW_DEF));
struct uref *item = uref_sibling_alloc_control(flow_def);
if (unlikely(item == NULL)) {
upipe_throw_fatal(upipe, UBASE_ERR_ALLOC);
return UBASE_ERR_ALLOC;
}
struct ustring name, value;
while (ubase_check(attribute_iterate(&line, &name, &value)) && line) {
if (!ustring_cmp_str(name, "URI")) {
value = ustring_unframe(value, '"');
char val[value.len + 1];
int err = ustring_cpy(value, val, sizeof (val));
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to copy %.*s",
(int)value.len, value.at);
continue;
}
err = uref_m3u_set_uri(item, val);
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to set uri %s", val);
continue;
}
}
else if (!ustring_cmp_str(name, "TYPE")) {
char val[value.len + 1];
int err = ustring_cpy(value, val, sizeof (val));
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to copy %.*s",
(int)value.len, value.at);
continue;
}
err = uref_m3u_master_set_media_type(item, val);
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to set media type %s", val);
continue;
}
}
else if (!ustring_cmp_str(name, "DEFAULT")) {
if (!ustring_cmp_str(value, "YES")) {
int err = uref_m3u_master_set_media_default(item);
if (unlikely(!ubase_check(err)))
continue;
}
else if (ustring_cmp_str(value, "NO")) {
upipe_warn_va(upipe, "invalid DEFAULT value %.*s",
(int)value.len, value.at);
continue;
}
}
else if (!ustring_cmp_str(name, "AUTOSELECT")) {
if (!ustring_cmp_str(value, "YES")) {
int err = uref_m3u_master_set_media_autoselect(item);
if (unlikely(!ubase_check(err)))
continue;
}
else if (ustring_cmp_str(value, "NO")) {
upipe_warn_va(upipe, "invalid AUTOSELECT value %.*s",
(int)value.len, value.at);
continue;
}
}
else if (!ustring_cmp_str(name, "NAME")) {
value = ustring_unframe(value, '"');
char val[value.len + 1];
int err = ustring_cpy(value, val, sizeof (val));
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to copy %.*s",
(int)value.len, value.at);
continue;
}
err = uref_m3u_master_set_media_name(item, val);
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to set media name %s", val);
continue;
}
}
else if (!ustring_cmp_str(name, "GROUP-ID")) {
value = ustring_unframe(value, '"');
char val[value.len + 1];
int err = ustring_cpy(value, val, sizeof (val));
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to copy %.*s",
(int)value.len, value.at);
continue;
}
err = uref_m3u_master_set_media_group(item, val);
if (unlikely(!ubase_check(err))) {
upipe_warn_va(upipe, "fail to set group id %s", val);
continue;
}
}
else {
upipe_warn_va(upipe, "ignoring attribute %.*s (%.*s)",
(int)name.len, name.at,
(int)value.len, value.at);
}
}
ulist_add(&upipe_m3u_reader->items, uref_to_uchain(item));
return UBASE_ERR_NONE;
}