copy_to_user

Type	Parameter	Name
void __user *	to
const void *	from
unsigned long	n

**Caller**
Name	Describe
seq_buf_to_user	seq_buf_to_user - copy the squence buffer to user space@s: seq_buf descriptor@ubuf: The userspace memory location to copy to@cnt: The amount to copy Copies the sequence buffer into the userspace memory pointed to* by @ubuf
kfifo_copy_to_user
copy_user_test
test_check_nonzero_user
test_copy_struct_from_user
test_user_copy_init
read_ldt
do_get_thread_area
mtrr_ioctl
msr_read
msr_ioctl
cpuid_read
do_read
copy_oldmem_page	py_oldmem_page - copy one page from "oldmem"@pfn: page frame number to be copied@buf: target memory address for the copy; this can be in kernel address* space or user address space (see @userbuf)@csize: number of bytes to copy@offset: offset in bytes
emulate_push_stack
arch_uretprobe_hijack_return_addr
fixup_umip_exception	xup_umip_exception() - Fixup a general protection fault caused by UMIP@regs: Registers as saved when entering the #GP handler The instructions SGDT, SIDT, STR, SMSW and SLDT cause a general protection* fault if executed with CPL > 0 (i
SYSCALL_DEFINE5
SYSCALL_DEFINE4
COMPAT_SYSCALL_DEFINE5
_proc_do_string	/proc/sys support
proc_put_long	proc_put_long - converts an integer to a decimal ASCII formatted string@buf: the user buffer@size: the size of the user buffer@val: the integer to be converted@neg: sign of the number, %TRUE for negative* In case of success %0 is returned and @buf and
ptrace_readdata
ptrace_request
SYSCALL_DEFINE4	sys_rt_sigprocmask - change the list of currently blocked signals@how: whether to add, remove, or set signals@nset: stores pending signals@oset: previous value of signal mask if non-null@sigsetsize: size of sigset_t type
SYSCALL_DEFINE2	sys_rt_sigpending - examine a pending signal that has been raised* while blocked@uset: stores pending signals@sigsetsize: size of sigset_t type or larger
copy_siginfo_to_user32
copy_siginfo_to_user32
SYSCALL_DEFINE2
do_compat_sigaltstack
SYSCALL_DEFINE1	sys_sigpending - examine pending signals*@uset: where mask of pending signal is returned
SYSCALL_DEFINE3	sys_sigprocmask - examine and change blocked signals@how: whether to add, remove, or set signals@nset: signals to add or remove (if non-null)@oset: previous value of signal mask if non-null Some platforms have their own version with special arguments;
SYSCALL_DEFINE4	sys_rt_sigaction - alter an action taken by a process@sig: signal to be sent@act: new sigaction@oact: used to save the previous sigaction@sigsetsize: size of sigset_t type
SYSCALL_DEFINE1
COMPAT_SYSCALL_DEFINE1
override_release	Work around broken programs that cannot handle "Linux 3.0".* Instead we map 3.x to 2.6.40+x, so e.g. 3.0 would be 2.6.40* And we map 4.x and later versions to 2.6.60+x, so 4.0/5.0/6.0/... would be* 2.6.60.
SYSCALL_DEFINE1
SYSCALL_DEFINE1	Old cruft
SYSCALL_DEFINE1
SYSCALL_DEFINE2
SYSCALL_DEFINE2
COMPAT_SYSCALL_DEFINE2
SYSCALL_DEFINE2	Back compatibility for getrlimit. Needed for some apps.
SYSCALL_DEFINE4
SYSCALL_DEFINE2
SYSCALL_DEFINE5
SYSCALL_DEFINE1
SYSCALL_DEFINE2	sys_sched_getparam - get the RT priority of a thread@pid: the pid in question.@param: structure containing the RT priority.* Return: On success, 0 and the RT priority is in @param. Otherwise, an error* code.
sched_attr_copy_to_user	Copy the kernel size attribute structure (which might be larger* than what user-space knows about) to user-space.* Note that all cases are valid: user-space buffer can be larger or* smaller than the kernel-space buffer. The usual case is that both
SYSCALL_DEFINE3	sys_sched_getaffinity - get the CPU affinity of a process@pid: pid of the process@len: length in bytes of the bitmask pointed to by user_mask_ptr*@user_mask_ptr: user-space pointer to hold the current CPU mask
devkmsg_read
syslog_print
syslog_print_all
read_profile	This function accesses profiling information. The returned data is* binary: the sampling step and the actual contents of the profile* buffer. Use of the program readprofile is recommended in order to* get meaningful info out of these data.
SYSCALL_DEFINE2
COMPAT_SYSCALL_DEFINE2
put_timespec64
__put_old_timespec32
put_old_timespec32
do_timer_create	Create a POSIX.1b interval timer.
SYSCALL_DEFINE2
put_itimerval
put_old_itimerval32
COMPAT_SYSCALL_DEFINE4
compat_put_timeval
compat_put_timespec
put_compat_rusage
seccomp_get_notif_sizes
relay_file_read
tracing_buffers_read
perf_event_query_prog_array
bpf_prog_array_copy_to_user
map_lookup_elem
map_get_next_key
map_lookup_and_delete_elem
bpf_prog_get_info_by_fd
bpf_map_get_info_by_fd
bpf_task_fd_query_copy
bpf_verifier_vlog
btf_get_info_by_fd
bpf_prog_offload_info_fill
__cgroup_bpf_query	Must be called with cgroup_mutex held to avoid races.
__cgroup_bpf_run_filter_getsockopt
perf_read_group
perf_read_one
_perf_ioctl
SYSCALL_DEFINE3	The mincore(2) system call
copy_nodes_to_user	Copy a kernel node mask to user space
COMPAT_SYSCALL_DEFINE3
COMPAT_SYSCALL_DEFINE6
COMPAT_SYSCALL_DEFINE4
do_pages_stat	Determine the nodes of a user array of pages and store it in* a user array of status.
gup_benchmark_ioctl
print_page_owner
store_msg
copy_msqid_to_user
ksys_msgctl
copy_compat_msqid_to_user
compat_ksys_msgctl
copy_semid_to_user
semctl_info
semctl_main
copy_compat_semid_to_user
copy_shmid_to_user
copy_shminfo_to_user
ksys_shmctl
copy_compat_shminfo_to_user
put_compat_shm_info
copy_compat_shmid_to_user
SYSCALL_DEFINE3
put_compat_mq_attr
blkdev_getgeo
blk_complete_sghdr_rq
sg_scsi_ioctl	sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl@q: request queue to send scsi commands down@disk: gendisk to operate on (option)@mode: mode used to open the file through which the ioctl has been submitted*@sic: userspace structure
put_sg_io_hdr
scsi_cmd_ioctl
bsg_scsi_complete_rq
bsg_sg_io
bsg_transport_complete_rq
compat_hdio_getgeo
blkdev_copy_zone_to_user
blkdev_report_zones_ioctl	BLKREPORTZONE ioctl processing.* Called from blkdev_ioctl.
read_table_data
keyctl_describe_key	Return a description of a key to userspace
keyctl_get_security	Get a key's the LSM security label.* The key must grant the caller View permission for this to work.* If there's a buffer, then up to buflen bytes of data will be placed into it.* If successful, the amount of information available will be returned,
keyctl_capabilities	Get keyrings subsystem capabilities.
request_key_auth_read	Read the callout_info data (retrieves the callout information).* - the key's semaphore is read-locked
user_read	ad the key data* - the key's semaphore is read-locked
keyctl_dh_compute_kdf
__keyctl_dh_compute
keyctl_pkey_query	Query information about an asymmetric key.
keyctl_pkey_e_d_s	Encrypt/decrypt/sign* Encrypt data, decrypt data or sign data using a public key
big_key_read	ad the key data* - the key's semaphore is read-locked
trusted_read	rusted_read - copy the sealed blob data to userspace in hex.* On success, return to userspace the trusted key datablob size.
encrypted_read	rypted_read - format and copy the encrypted data to userspace* The resulting datablob format is:* * On success, return to userspace the encrypted key datablob size.
selinux_socket_getpeersec_stream
smack_socket_getpeersec_stream	smack_socket_getpeersec_stream - pull in packet label@sock: the socket@optval: user's destination@optlen: size thereof@len: max thereof* returns zero on success, an error code otherwise
tomoyo_flush	moyo_flush - Flush queued string to userspace's buffer.@head: Pointer to "struct tomoyo_io_buffer". Returns true if all data was flushed, false otherwise.
tomoyo_read_self	moyo_read_self - read() for /sys/kernel/security/tomoyo/self_domain interface.@file: Pointer to "struct file".@buf: Domainname which current thread belongs to.@count: Size of @buf.@ppos: Bytes read by now.
apparmor_socket_getpeersec_stream	apparmor_socket_getpeersec_stream - get security context of peer* Note: for tcp only valid if using ipsec or cipso on lan
SYSCALL_DEFINE5
SYSCALL_DEFINE6
cp_old_stat	For backward compatibility? Maybe this should be moved* into arch/i386 instead?
cp_new_stat
cp_new_stat64
cp_statx
cp_compat_stat
do_pipe2	sys_pipe() is the normal C calling standard for creating* a pipe. It's not the way Unix traditionally does this, though.
readlink_copy
f_getown_ex
fcntl_rw_hint
do_fcntl
SYSCALL_DEFINE3
put_compat_flock
put_compat_flock64
fiemap_fill_next_extent
ioctl_fiemap
ioctl_file_dedupe_range
do_vfs_ioctl	When you add any new common ioctls to the switches above and below* please update compat_sys_ioctl() too.* do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.* It's just a simple helper for sys_ioctl and compat_sys_ioctl.
compat_filldir
poll_select_finish
seq_read	seq_read - ->read() method for sequential files.@file: the file to read from@buf: the buffer to read to@size: the maximum number of bytes to read@ppos: the current position in the file* Ready-made ->f_op->read()
getxattr	Extended attribute GET operations
listxattr	Extended attribute LIST operations
simple_read_from_buffer	simple_read_from_buffer - copy data from the buffer to user space@to: the user space buffer to read to@count: the maximum number of bytes to read@ppos: the current position in the buffer@from: the buffer to read from*@available: the size of the
do_splice	Determine where to splice to/from.
SYSCALL_DEFINE2	NOTE! The user-level library version returns a* character pointer
do_statfs_native
do_statfs64
SYSCALL_DEFINE2
put_compat_statfs
put_compat_statfs64
COMPAT_SYSCALL_DEFINE2	This is a copy of sys_ustat, just dealing with a structure layout.* Given how simple this syscall is that apporach is more maintainable* than the various conversion hacks.
fscontext_read	Allow the user to read back any error, warning or informational messages.
copy_event_to_user	Copy an event to user space, returning how much we copied.* We already checked that the event size is smaller than the* buffer we had in "get_one_event()" above.
copy_fid_to_user
copy_event_to_user
signalfd_copyinfo	Copied from copy_siginfo_to_user() in kernel/signal.c
userfaultfd_read
userfaultfd_api	serland asks for a certain API version and we return which bits* and ioctl commands are implemented in this kernel for such API* version or -EINVAL if unknown.
aio_read_events_ring	aio_read_events_ring* Pull an event off of the ioctx's event ring. Returns the number of* events fetched
io_uring_setup	Sets up an aio uring context, and returns the fd. Applications asks for a* ring size, we return the actual sq/cq ring sizes (among other things) in the* params structure passed in.
fscrypt_ioctl_add_key	Add a master encryption key to the filesystem, causing all files which were* encrypted with it to appear "unlocked" (decrypted) when accessed.* When adding a key for use by v1 encryption policies, this ioctl is
fscrypt_ioctl_get_key_status	Retrieve the status of an fscrypt master encryption key
fscrypt_ioctl_get_policy	Original ioctl version; can only get the original policy version
fscrypt_ioctl_get_policy_ex	Extended ioctl version; can get policies of any version
fsverity_ioctl_measure	sverity_ioctl_measure() - get a verity file's measurement* Retrieve the file measurement that the kernel is enforcing for reads from a* verity file
create_elf_tables
create_elf_fdpic_tables	present useful information to the program by shovelling it onto the new* process's stack
do_sys_name_to_handle
quota_getfmt
quota_getinfo
quota_getquota
quota_getnextquota	Return quota for next active quota >= this id, if any exists,* otherwise return -ENOENT via ->get_nextdqblk
quota_getxstate
quota_getxstatev
quota_getxquota
quota_getnextxquota	Return quota for next active quota >= this id, if any exists,* otherwise return -ENOENT via ->get_nextdqblk.
do_lookup_dcookie	And here is where the userspace process can look up the cookie value* to retrieve the path.
put_compat_sigset	Defined inline such that size can be compile time constant, which avoids* CONFIG_HARDENED_USERCOPY complaining about copies from task_struct

Function report