copy_from

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

**Caller**
Name	Describe
kfifo_copy_from_user
kstrtobool_from_user	Since "base" would be a nonsense argument, this open-codes the* _from_user helper instead of using the helper macro below.
kstrtoull_from_user
kstrtoll_from_user
kstrtoul_from_user
kstrtol_from_user
kstrtouint_from_user
kstrtoint_from_user
kstrtou16_from_user
kstrtos16_from_user
kstrtou8_from_user
kstrtos8_from_user
copy_user_test
test_user_copy_init
xz_dec_test_write	Decode the data given to us from the userspace. CRC32 of the uncompressed* data is calculated and is printed at the end of successful decoding. The* uncompressed data isn't stored anywhere for further use.* The
write_ldt
do_set_thread_area	Set a given TLS descriptor:
mtrr_ioctl
pseudo_lock_measure_trigger
msr_write
msr_ioctl
do_sys_vm86
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
copy_clone_args_from_user
SYSCALL_DEFINE1
COMPAT_SYSCALL_DEFINE1
ptrace_writedata
ptrace_peek_siginfo
ptrace_request
set_user_sigmask	The api helps set app-provided sigmasks
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
post_copy_siginfo_from_user
__copy_siginfo_from_user
copy_siginfo_from_user
__copy_siginfo_from_user32
copy_siginfo_from_user32
SYSCALL_DEFINE4	sys_rt_sigtimedwait - synchronously wait for queued signals specified* in @uthese@uthese: queued signals to wait for@uinfo: if non-null, the signal's siginfo is returned here@uts: upper bound on process time suspension@sigsetsize: size of sigset_t type
SYSCALL_DEFINE2
restore_altstack
do_compat_sigaltstack
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_DEFINE2	sys_rt_sigsuspend - replace the signal mask for a value with the@unewset value until a signal is received@unewset: new signal mask value*@sigsetsize: size of sigset_t type
SYSCALL_DEFINE2
SYSCALL_DEFINE2	Only setdomainname; getdomainname can be implemented by calling* uname()
COMPAT_SYSCALL_DEFINE2
SYSCALL_DEFINE4
SYSCALL_DEFINE2
prctl_set_auxv
do_sched_setscheduler
get_user_cpu_mask
sched_feat_write
psi_write
pm_qos_power_write
snapshot_ioctl
irq_debug_write
filter_write
kcmp_epoll_target
SYSCALL_DEFINE2
COMPAT_SYSCALL_DEFINE2
get_timespec64
__get_old_timespec32
get_old_timespec32
SYSCALL_DEFINE3
SYSCALL_DEFINE2
get_itimerval
get_old_itimerval32
udelay_test_write
copy_chunked_from_user
kimage_load_normal_segment
kimage_load_crash_segment
copy_user_segment_list
COMPAT_SYSCALL_DEFINE4
compat_get_timeval
compat_get_timespec
get_compat_sigset
proc_setgroups_write
fei_write
seccomp_get_action_avail
tracing_trace_options_write
tracing_set_trace_write
tracing_clock_write
trace_parse_run_command
perf_event_query_prog_array
get_user_stack_nth
probe_mem_read	Uprobes-specific fetch functions
map_update_elem
bpf_prog_load
bpf_prog_get_info_by_fd
check_btf_func
check_btf_line
btf_parse
btf_get_info_by_fd
__cgroup_bpf_run_filter_sysctl	__cgroup_bpf_run_filter_sysctl - Run a program on sysctl@head: sysctl table header@table: sysctl table@write: sysctl is being read (= 0) or written (= 1)@buf: pointer to buffer passed by user space*@pcount: value-result argument: value is size of
__cgroup_bpf_run_filter_setsockopt
__cgroup_bpf_run_filter_getsockopt
_perf_ioctl
rseq_get_rseq_cs
memdup_user	memdup_user - duplicate memory region from user space@src: source address in user space@len: number of bytes to copy* Return: an ERR_PTR() on failure. Result is physically* contiguous, to be freed by kfree().
vmemdup_user	vmemdup_user - duplicate memory region from user space@src: source address in user space@len: number of bytes to copy* Return: an ERR_PTR() on failure. Result may be not* physically contiguous. Use kvfree() to free.
memdup_user_nul	memdup_user_nul - duplicate memory region from user space and NUL-terminate@src: source address in user space@len: number of bytes to copy* Return: an ERR_PTR() on failure.
SYSCALL_DEFINE1
copy_huge_page_from_user
SYSCALL_DEFINE1
get_nodes	Copy a node mask from user space.
COMPAT_SYSCALL_DEFINE5
slabinfo_write	slabinfo_write - Tuning for the slab allocator@file: unused@buffer: user buffer@count: data length@ppos: unused* Return: %0 on success, negative error code otherwise.
do_pages_stat	Determine the nodes of a user array of pages and store it in* a user array of status.
gup_benchmark_ioctl
mcopy_atomic_pte
__mcopy_atomic
get_compat_ipc64_perm
get_compat_ipc_perm
load_msg
copy_msqid_from_user
semctl_main
copy_semid_from_user
do_semtimedop
copy_shmid_from_user
ksys_ipc
SYSCALL_DEFINE4
do_mq_notify	Notes: the case when user wants us to deregister (with NULL as pointer)* and he isn't currently owner of notification, will be silently discarded.* It isn't explicitly defined in the POSIX.
SYSCALL_DEFINE2
SYSCALL_DEFINE3
get_compat_mq_attr
blkpg_ioctl
blk_ioctl_discard
blk_ioctl_zeroout
blkdev_pr_register
blkdev_pr_reserve
blkdev_pr_release
blkdev_pr_preempt
blkdev_pr_clear
blk_fill_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
get_sg_io_hdr
scsi_cmd_ioctl
bsg_scsi_fill_hdr
bsg_sg_io
blkdev_report_zones_ioctl	BLKREPORTZONE ioctl processing.* Called from blkdev_ioctl.
blkdev_zone_mgmt_ioctl	BLKRESETZONE, BLKOPENZONE, BLKCLOSEZONE and BLKFINISHZONE ioctl processing.* Called from blkdev_ioctl.
queue_state_write
generic_table_write_data
SYSCALL_DEFINE5	Extract the description of a new key from userspace and either add it as a* new key to the specified keyring or update a matching key in that keyring.* If the description is NULL or an empty string, the key type is asked to* generate one from the payload.
keyctl_update_key	Update a key's data payload from the given data.* The key must grant the caller Write permission and the key type must support* updating for this to work. A negative key can be positively instantiated* with this call.* If successful, 0 will be returned
compat_keyctl_dh_compute	Perform the DH computation or DH based key derivation.* If successful, 0 will be returned.
__keyctl_dh_compute
keyctl_dh_compute
keyctl_pkey_params_get_2	Get parameters from userspace. Callers must always call the free function* on params, even if an error is returned.
sel_write_load
smk_write_doi	smk_write_doi - write() for /smack/doi@file: file pointer, not actually used@buf: where to get the data from@count: bytes sent@ppos: where to start* Returns number of bytes written or error code, as appropriate
smk_write_direct	smk_write_direct - write() for /smack/direct@file: file pointer, not actually used@buf: where to get the data from@count: bytes sent@ppos: where to start* Returns number of bytes written or error code, as appropriate
smk_write_mapped	smk_write_mapped - write() for /smack/mapped@file: file pointer, not actually used@buf: where to get the data from@count: bytes sent@ppos: where to start* Returns number of bytes written or error code, as appropriate
smk_write_logging	smk_write_logging - write() for /smack/logging@file: file pointer, not actually used@buf: where to get the data from@count: bytes sent@ppos: where to start* Returns number of bytes written or error code, as appropriate
smk_write_ptrace	smk_write_ptrace - write() for /smack/ptrace@file: file pointer@buf: data from user space@count: bytes sent@ppos: where to start - must be 0
aa_simple_write_to_buffer	aa_simple_write_to_buffer - common routine for getting policy from user@userbuf: user buffer to copy data from (NOT NULL)@alloc_size: size of user buffer (REQUIRES: @alloc_size >= @copy_size)@copy_size: size of data to copy from user buffer@pos:
multi_transaction_new
rw_copy_check_uvector	w_copy_check_uvector() - Copy an array of &struct iovec from userspace* into the kernel and check that it is valid.@type: One of %CHECK_IOVEC_ONLY, %READ, or %WRITE.@uvector: Pointer to the userspace array.
SYSCALL_DEFINE4
COMPAT_SYSCALL_DEFINE4
SYSCALL_DEFINE6
copy_strings	'copy_strings()' copies argument/environment strings from the old* processes's memory to the new process's stack. The call to get_user_pages()* ensures the destination page is created and not swapped out.
f_setown_ex
fcntl_rw_hint
do_fcntl
SYSCALL_DEFINE3
get_compat_flock
get_compat_flock64
ioctl_fiemap
ioctl_file_clone_range
ioctl_preallocate	This provides compatibility with legacy XFS pre-allocation ioctls* which predate the fallocate syscall.* Only the l_start, l_len and l_whence fields of the 'struct space_resv'* are used here, rest are ignored.
compat_ioctl_preallocate	just account for different alignment
get_fd_set	Use "unsigned long" accesses to let user-mode fd_set's be long-aligned.
kern_select
SYSCALL_DEFINE1
do_sys_poll
do_compat_select
COMPAT_SYSCALL_DEFINE1
setxattr	Extended attribute SET operations
simple_write_to_buffer	simple_write_to_buffer - copy data from user space to the buffer@to: the buffer to write to@available: the size of the buffer@ppos: the current position in the buffer@from: the user space buffer to read from*@count: the maximum number of bytes to
simple_transaction_get
simple_attr_write	rpret the buffer as a number to call the set function with
do_splice	Determine where to splice to/from.
fanotify_write
SYSCALL_DEFINE4	The following function implements the controller interface for* the eventpoll file that enables the insertion/removal/change of* file descriptors inside the interest set.
SYSCALL_DEFINE4
SYSCALL_DEFINE3
eventfd_write
userfaultfd_register
userfaultfd_unregister
userfaultfd_wake	serfaultfd_wake may be used in combination with the* UFFDIO_*_MODE_DONTWAKE to wakeup userfaults in batches.
userfaultfd_copy
userfaultfd_zeropage
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.
io_submit_one
SYSCALL_DEFINE6
COMPAT_SYSCALL_DEFINE6
io_sqe_files_register
io_sqe_files_update
io_copy_iov
io_eventfd_register
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
do_remove_key	Try to remove an fscrypt master encryption key
fscrypt_ioctl_get_key_status	Retrieve the status of an fscrypt master encryption key
fscrypt_ioctl_set_policy
fscrypt_ioctl_get_policy_ex	Extended ioctl version; can get policies of any version
enable_verity
fsverity_ioctl_enable	sverity_ioctl_enable() - enable verity on a file* Enable fs-verity on a file. See the "FS_IOC_ENABLE_VERITY" section of* Documentation/filesystems/fsverity.rst for the documentation.* Return: 0 on success, -errno on failure
create_entry	This registers a new binary format, it recognises the syntax* ':name:type:offset:magic:mask:interpreter:flags'* where the ':' is the IFS, that can be chosen with the first char
parse_command	Set status of entry/binfmt_misc:* '1' enables, '0' disables and '-1' clears entry/binfmt_misc
do_sys_name_to_handle
handle_to_path
quota_setinfo
quota_setquota
quota_enable
quota_disable
quota_getxstatev
quota_setxquota
quota_rmxquota

Function report