simple_read_from

函数名称：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

函数原型：ssize_t simple_read_from_buffer(void __user *to, size_t count, loff_t *ppos, const void *from, size_t available)

返回类型：ssize_t

参数：

类型	参数	名称
void __user *	to
size_t	count
loff_t *	ppos
const void *	from
size_t	available

**调用者**
名称	描述
pm_qos_power_read
snapshot_read
filter_read	DMA-API debugging init code* The init code does two things:* 1. Initialize core data structures* 2. Preallocate a given number of dma_debug_entry structs
tracing_cpumask_read
tracing_readme_read
tracing_saved_cmdlines_size_read
tracing_set_trace_read
tracing_nsecs_read
tracing_entries_read
tracing_total_entries_read
tracing_stats_read
trace_options_read
trace_options_core_read
rb_simple_read
buffer_percent_read
hwlat_read	hwlat_read - Wrapper read function for reading both window and width@filp: The active open file structure@ubuf: The userspace provided buffer to read value into@cnt: The maximum number of bytes to read@ppos: The current "file" position* This function
stack_max_size_read
graph_depth_read
event_enable_read
system_enable_read
event_id_read
event_filter_read
subsystem_filter_read
show_header
sel_read_enforce
sel_read_handle_unknown
sel_read_handle_status
sel_read_policyvers
sel_read_mls
sel_read_policy
sel_read_checkreqprot
sel_read_bool
sel_read_avc_cache_threshold
sel_read_avc_hash_stats
sel_read_initcon
sel_read_class
sel_read_perm
sel_read_policycap
smk_read_doi	smk_read_doi - read() for /smack/doi@filp: file pointer, not actually used@buf: where to put the result@count: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_direct	smk_read_direct - read() for /smack/direct@filp: file pointer, not actually used@buf: where to put the result@count: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_mapped	smk_read_mapped - read() for /smack/mapped@filp: file pointer, not actually used@buf: where to put the result@count: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_ambient	smk_read_ambient - read() for /smack/ambient@filp: file pointer, not actually used@buf: where to put the result@cn: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_logging	smk_read_logging - read() for /smack/logging@filp: file pointer, not actually used@buf: where to put the result@cn: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_syslog	smk_read_syslog - read() for smackfs/syslog@filp: file pointer, not actually used@buf: where to put the result@cn: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
smk_read_ptrace	smk_read_ptrace - read() for /smack/ptrace@filp: file pointer, not actually used@buf: where to put the result@count: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
ns_revision_read
multi_transaction_read
rawdata_read
safesetid_file_read
lockdown_read
ima_show_htable_value
evm_read_key	vm_read_key - read() for /evm@filp: file pointer, not actually used@buf: where to put the result@count: maximum to send along@ppos: where to start* Returns number of bytes read or error code, as appropriate
simple_transaction_read
simple_attr_read	ad from the buffer that is filled with the get function
bm_entry_read	/
bm_status_read	/status
test_fw_misc_read
lockevent_read	The lockevent_read() function can be overridden.

函数逻辑报告