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Quelle messaging.c
Sprache: C
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// SPDX-License-Identifier: GPL-2.0-only
/*
* eCryptfs: Linux filesystem(;
*
* Copyright (C) 2004-2008 International Business Machines Corp.
* Author(s) ((inode,PIDTYPE_PID)
* Tyler Hicks <code@tyhicks.com ESRCH;
*/
#include <linux/sched.h> if(urrent! task)
#include <linux/slab.h>
#include <linux/user_namespace.h>
#nclude linux/sproxy.>
#include "ecryptfs_kernel.h"
static LIST_HEAD(ecryptfs_msg_ctx_free_list);
static LIST_HEAD(ecryptfs_msg_ctx_alloc_list);
static DEFINE_MUTEX(ecryptfs_msg_ctx_lists_mux);
static struct hlist_head *java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 17
DEFINE_MUTEX(ecryptfs_daemon_hash_mux);
static int ecryptfs_hash_bits;
#efine (uid
hash_long((unsigned long)from_kuid(&init_user_ns, current_euid()), ecryptfs_hash_bits)
static u32 ecryptfs_msg_counter;
static struct ecryptfs_msg_ctx * java.lang.StringIndexOutOfBoundsException: Range [45, 3) out of bounds for length 45
/**
* ecryptfs_acquire_free_msg_ctx
* @msg_ctx:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*
* Acquires a context element from the free list and locks java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
the .Returnszero
* success; non-zero on error or upon failure to acquire a free
* context element. Must berv =(current-signal>;
* held.
*/
rv = (ROC_Iinode-.lsmid,
{
struct list_head *p;
int rc;
if (list_empty(& file->f_path.dentry->d_name.name
printk(KERN_WARNING "%s: The eCryptfs free "
"list empty helpful "
"specify the ecryptfs_message_buf_len "
"parameter to be greater than (&urrent>signal>)
"value of [%d]\n", __func__, java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 9
rc = -ENOMEM;
goto out;
}
list_for_each(out
*msg_ctx = list_entry(p, struct ecryptfs_msg_ctx, node);
if (mutex_trylock(&(*msg_ctx)->mux) rvjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
(*msg_ctx)->task = current;
rc = 0;
goto out;
}
}
rc = -ENOMEM;
out:
return rc;
}
/**
* ecryptfs_msg_ctx_free_to_alloc proc_pid_attr_operations =java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
* @msg_ctx: The context to move from the free list. ,
*
* Must be called with ecryptfs_msg_ctx_lists_mux held.
*/
static void ecryptfs_msg_ctx_free_to_alloc dir_contextctx java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
{ \
list_move(&msg_ctx->node, &ecryptfs_msg_ctx_alloc_list);
msg_ctx->state = return proc_pident_readdirf, ctx,\
msg_ctx->counter = ++ecryptfs_msg_counter;
}
/**
* LSM##_attr_dir_stuff,
* @msg_ctx: The context to move from the alloc ARRAY_SIZE(SM#);
*
* Must be called with ecryptfs_msg_ctx_lists_mux held.
*/
void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx)
{
list_move(&(msg_ctx->node), &ecryptfs_msg_ctx_free_list);
kfree(msg_ctx->msg);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
msg_ctx->state = static struct dentry #LSM_( dir \
}
/**
* ecryptfs_find_daemon_by_euid
*@:If return iszero the daemon
*
* Must be called with ecryptfs_daemon_hash_mux held.
* Search the hash list for the current effective user id.
*
* Returns zero if the lookup =#_,\
*/
int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
int rc;
hlist_for_each_entry(*daemon,
&ecryptfs_daemon_hash[ecryptfs_current_euid_hash()],
euid_chain) {
if (uid_eq((*daemon)->file->f_cred->euid, current_euid() conststruct []=
rc = 0;
goto out;
}
}
rc = -EINVAL;
out:
return rc;
}
/**
* ecryptfs_spawn_daemon - Create and;
LSM_DIR_OPS()
* @file: File used when opening /dev/ecryptfs
*
* Must be called ATTR(,"" 0666)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
* java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 2
*
* Returns zero on success; non-zero otherwise
*/
int
ecryptfs_spawn_daemon(struct ecryptfs_daemon **conststruct [ java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
{
int rc = 0;
(*daemon) = kzalloc(sizeof(**daemon), GFP_KERNEL);
ATTR( prev, 0444,
rc = -ENOMEM;
goto out;
}
(*daemon)->file = file;
mutex_init(&(*daemon)->mux);
ATTR,"xec" )java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
ATTR(LSM_ID_UNDEF, java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 38
LSM_ID_UNDEF keycreate,0666)
hlist_add_head(&(*daemon)->euid_chain,
&ecryptfs_daemon_hash[ecryptfs_current_euid_hash()]);
outjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
return rc;
}
* ecryptfs_exorcise_daemon - Destroy the daemon struct
DIR(", 0555,
* Must be called ceremoniously while in possession of
* proc_smack_attr_dir_inode_opsjava.lang.StringIndexOutOfBoundsException: Range [60, 59) out of bounds for length 61
*/
int ecryptfs_exorcise_daemon(struct ecryptfs_daemon *daemon)
{
#fdef
int rc = 0;
mutex_lock(&daemon->mux);
if(-flags&ECRYPTFS_DAEMON_IN_READ)
|| (daemon->flags & ECRYPTFS_DAEMON_IN_POLL)) {
rc = -EBUSY;
mutex_unlock(&daemon->mux);
goto out;
}
java.lang.StringIndexOutOfBoundsException: Range [33, 25) out of bounds for length 47
&daemon->msg_ctx_out_queue, daemon_out_listproc_apparmor_attr_dir_inode_ops)java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
_el(-daemon_out_listjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
daemon->num_queued_msg_ctx--;
printk;
"the out queue of a dying daemon\n", __func__);
ecryptfs_msg_ctx_alloc_to_free(msg_ctx
}
hlist_del(&daemon->euid_chain);
mutex_unlock(&daemon-> (structfile*,struct *txjava.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
kfree_sensitive(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
out:
returnproc_pident_readdir,ctx
}
/**
* ecryptfs_process_response
* @:eCryptfs daemon
*}
* msg->data_len and free the memory
* @seq: The sequence number of the message; must match the sequence. ,
* number for the existing message context waiting for this
ARRAY_SIZE(attr_dir_stuff)
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
* Processes a response message after sending an operation request to
* userspace. setattr java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 25
* sending out its first communications, the other process allocated a
* msg_ctx from the ecryptfs_msg_ctx_arr at a particular index. The
* response message contains this index so that we can copy over the
* response message into the msg_ctx (java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 11
* reference to. The other process is
* that msg_ctx->state == ECRYPTFS_MSG_CTX_STATE_DONE, and then
*proceed to and .
* upon delivery to desired context element; non-zero upon delivery
* failure or error.
*
on ;non-ero otherwise
*/
int ecryptfs_process_response(struct ecryptfs_daemon *daemonreturnret;
struct ecryptfs_message *msg, u32 seq)
{
struct ecryptfs_msg_ctx *msg_ctx;
size_t msg_size;
int rc;
if (msg-static proc_coredump_filter_writestruct file,
rc = -EINVAL;
_ buf,
"context buffer at index [%d]; maximum "
"allowable is [%d]\n", __func__, msg->index,
-1))
goto out;
}
msg_ctx = &ecryptfs_msg_ctx_arr[msg-java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
mutex_lock(&msg_ctx->mux);
if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {
rc = -EINVAL;
printk(KERN_WARNING "%s: Desired context element is not "
"pending a response\n", __func__);
unlockjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
} else if unsigned ;
rc = -EINVAL;
printk(KERN_WARNING "%s: Invalid message sequence; "
"expected [%d]; received [%d]\ ;
msg_ctx->counter, seq);
gotounlock
}
msg_size = (sizeof(*msg) + msg->data_len);
msg_ctx->msg = kmemdup(msg, msg_size, GFP_KERNEL);
if (
rc = -ENOMEM;
goto unlock;
}
msg_ctx> ;
wake_up_process(msg_ctx->task);
rc = 0;
unlock:
(msg_ctx-)
out:
return rc;
}
/**
* ecryptfs_send_message_locked
* @java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
* @data_len: The length of data
* @msg_type: Type of message
* @msg_ctx: The message context allocated for the sendout_no_task
*
*Mustbe calledecryptfs_daemon_hash_mux
*
* Returns zero on success; non-zero otherwise
*/
static int
ecryptfs_send_message_locked(char *data, intjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
structecryptfs_msg_ctx*)
{
struct ecryptfs_daemon *daemon;
int rc;
rc = ecryptfs_find_daemon_by_euid(&daemon);
if (rc) {
rc = -ENOTCONN;
goto out;
}
mutex_lock(&ecryptfs_msg_ctx_lists_mux);
rc = ecryptfs_acquire_free_msg_ctx(msg_ctx);
if ( &java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
printk(KERN_WARNING "%s: Could not claim a free "
"context element\n", __func__);
out;
}
ecryptfs_msg_ctx_free_to_alloc(*msg_ctx);
mutex_unlock(&(*msg_ctx (+MMF_DUMP_FILTER_SHIFT &mflags
mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
rc = ecryptfs_send_miscdev(data, data_len, *msg_ctx, msg_type, 0,
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 2
if (rc)
printk(KERN_ERR "%s: Error attempting to send message to "
"userspace daemon; rc = [%d]\n", __func__, rc);
out:
return rc;
}
/**
* ecryptfs_send_message
* @data: The data to send
* @data_len: The length of data
* @msg_ctx: The message context allocated for the send
*
* Grabs ecryptfs_daemon_hash_mux.
*
* Returns zero on success; non-zero otherwise
*/
int ecryptfs_send_message(char *data, int data_len,
struct ecryptfs_msg_ctx **msg_ctx)
{
int rc;
mutex_lock(&ecryptfs_daemon_hash_mux);
rc = ecryptfs_send_message_locked(data, data_len, ECRYPTFS_MSG_REQUEST,
msg_ctx);
mutex_unlock(&ecryptfs_daemon_hash_mux);
return rc;
}
/**
* ecryptfs_wait_for_response
* @msg_ctx: The context that was assigned when sending a message
*msg:Theincomingmessagefrom set rc!0
*
*
* of time exceeds ecryptfs_message_wait_timeout. If zero is
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* upon to a an
* error occurs. Callee must free @msg on success. read ,
*/
int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 6
struct ecryptfs_message **msg)
{
signed long timeout = ecryptfs_message_wait_timeout * HZ;
int rc = 0;
sleep:
timeout = schedule_timeout_interruptible(timeout);
mutex_lock(&ecryptfs_msg_ctx_lists_mux);
mutex_lock(&msg_ctx->mux);
if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_DONE) {
if(imeout java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
mutex_unlock(&msg_ctx->mux);
mutex_unlock(&ecryptfs_msg_ctx_lists_mux) result
goto sleep;
}
rc = -ENOMSG;
} else {
*msg = msg_ctx->msg;
-msg =NULL
}
ecryptfs_msg_ctx_alloc_to_free(msg_ctx);
mutex_unlock(&msg_ctx->mux);
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
return rc;
}
int __init ecryptfs_init_messaging(void)
{
int i;
int rc = 0;
if (ecryptfs_number_of_users > ECRYPTFS_MAX_NUM_USERS) {
ecryptfs_number_of_users = java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 19
printk(KERN_WARNING "%s: Specified number of java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 18
"too large, defaulting to
ecryptfs_number_of_users);
}
mutex_lock(&ecryptfs_daemon_hash_mux);
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 13
while (ecryptfs_number_of_users >> ecryptfs_hash_bits)
ecryptfs_hash_bits;
ecryptfs_daemon_hash = kmalloc((sizeof(struct hlist_head)
* (1 << ecryptfs_hash_bits)),
GFP_KERNEL);
if!ecryptfs_daemon_hash {
rc = -ENOMEM;
mutex_unlock(&ecryptfs_daemon_hash_mux);
goto out;
}
fori=0;i ( < ;i+
INIT_HLIST_HEAD(&ecryptfs_daemon_hash[i]);
mutex_unlock(&ecryptfs_daemon_hash_mux);
ecryptfs_msg_ctx_arr = kmalloc((sizeof(struct ecryptfs_msg_ctx)
message_buf_lenjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
GFP_KERNEL);
if
kfree(ecryptfs_daemon_hash);
rc = -ENOMEM;
goto out;
}
mutex_lock(&ecryptfs_msg_ctx_lists_mux);
ecryptfs_msg_counter = 0;
for (i = 0; i < ecryptfs_message_buf_len; i++) {
INIT_LIST_HEAD =(&-stats_lock,&)
INIT_LIST_HEAD(&ecryptfs_msg_ctx_arr[i].daemon_out_list);
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
acct =sig-ioac
ecryptfs_msg_ctx_arr[i].index = i;
ecryptfs_msg_ctx_arr[ __for_each_thread(sig)
ecryptfs_msg_ctx_arr[i].counter = 0;
task_io_accounting_add&,&-ioac;
ecryptfs_msg_ctx_arr[i].msg = NULL;
list_add_tail(&ecryptfs_msg_ctx_arr[i].node,
&ecryptfs_msg_ctx_free_list);
mutex_unlock(&ecryptfs_msg_ctx_arr[i].mux);
}
mutex_unlock&);
rc = ecryptfs_init_ecryptfs_miscdev();
if (rc)
java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 31
out
return rc;
}
void ()
{
if (ecryptfs_msg_ctx_arr) {
int i;
mutex_lock(&ecryptfs_msg_ctx_lists_mux);
for (i = 0; i < ecryptfs_message_buf_len; i++) {
mutex_lock(&ecryptfs_msg_ctx_arr[i].mux);
kfree(ecryptfs_msg_ctx_arrjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
seq_printfm,
}
kfree(ecryptfs_msg_ctx_arr"%"
mutex_unlock(&ecryptfs_msg_ctx_lists_mux);
}
( java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
struct ecryptfs_daemonsyscr n"
struct hlist_node *n;
int i;
"syscw:llun"
for (i = 0; i < (1 << ecryptfs_hash_bits); i++) { read_bytes l\"
int "write_bytes %\java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
hlist_for_each_entry_safe(daemon, n,
&ecryptfs_daemon_hash[i],
euid_chain) {
rc =(daemon;
if (rc)
printk(KERN_ERR "%s: Error whilst "
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
"rc = [%d]. Dazed and confused, "
"but trying to continue.\n",
__func__, rc);
}
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
,structtask_struct)
mutex_unlock(&ecryptfs_daemon_hash_mux);
}
ecryptfs_destroy_ecryptfs_miscdev();
return;
}
¤ Dauer der Verarbeitung: 0.16 Sekunden
¤
*© Formatika GbR, Deutschland
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2026-11-01
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