Linux system call Function list __oracle

The following is a list of Linux system calls that contain most common system calls and functions derived from system calls. This is probably the only list of Linux system calls you can see on the Internet, even if it's a simple alphabetical list, and it's quite rare.

By convention, this list is modelled on the 2nd section of man pages, the system call section. According to the author's understanding, it made a general classification, at the same time, some minor changes have been made, deleting a few system calls for kernel use only, not allowing users to call, making minor modifications to individual points where they are slightly inappropriate, and attaching a brief comment to all listed system calls.

Some of these functions function exactly the same, except for different parameters. (perhaps many familiar C + + friends can immediately associate the function overload, but do not forget that the Linux core is written in C, so you can only take a different function name). There are also some functions that are obsolete, replaced by newer and better functions (GCC warns when linking to these functions), but because they remain for compatibility reasons, these functions will be marked with a "*" number in front of them.

First, Process Control:

Fork	Create a new process
Clone	Create child processes by specified criteria
Execve	Running an executable file
Exit	Abort process
_exit	Abort the current process immediately
Getdtablesize	Maximum number of files that the process can open
Getpgid	Gets the specified process group identification number
Setpgid	Sets the specified process group flag number
Getpgrp	Get the current Process group identification number
Setpgrp	Set the current Process group flag number
Getpid	Get process identification number
Getppid	Get the parent process identification number
GetPriority	Get scheduling priority
SetPriority	Set scheduling priority
Modify_ldt	Local Description table for read-write process
Nanosleep	Make a process sleep specified time
Nice	Change the priority of a time-sharing process
Pause	Suspend process, wait for signal
Personality	Set up a process run domain
Prctl	To perform specific operations on a process
Ptrace	Process tracking
Sched_get_priority_max	Gets the upper limit of the static priority
Sched_get_priority_min	Get the lower bound of a static priority
Sched_getparam	Get scheduling parameters for a process
Sched_getscheduler	Gets the scheduling policy for the specified process
Sched_rr_get_interval	Gets the time slice length of the real-time process scheduled by the RR algorithm
Sched_setparam	Set schedule parameters for a process
Sched_setscheduler	To set scheduling policies and parameters for a specified process
Sched_yield	The process proactively conceded the processor and waited for the queue to be dispatched.
Vfork	Create a subprocess to execute a new program, often with EXECVE, etc.
Wait	Wait for child process to terminate
Wait3	See also wait
Waitpid	Wait for the specified child process to terminate
Wait4	See Waitpid
Capget	Get Process Permissions
Capset	Set process Permissions
GetSID	Get the meeting identification number
Setsid	Set up a meeting identification number

Second, file system control

1. File Read and write operation

Fcntl	File control
Open	Open File
creat	Create a new file
Close	Close the file description Word
Read	Read files
Write	Write a file
Readv	Reading data from a file into a buffer array
Writev	Writes data from a buffer array to a file
Pread	Read randomly to a file
Pwrite	Write randomly to a file
Lseek	Move file pointer
_llseek	Moving a file pointer in a 64-bit address space
Dup	Copy an open file descriptor
Dup2	Copy a file descriptor by specified criteria
Flock	File Plus/unlock
Poll	I/o multi-channel conversion
Truncate	Truncate file
Ftruncate	See truncate
Umask	Set File Permission Mask
Fsync	Write the file back to disk in the memory section

2. File System operation

Access	Determining the accessibility of a file
ChDir	Change the current working directory
Fchdir	See ChDir
chmod	Change file Mode
Fchmod	See chmod
Chown	Change the owner or user group of a file
Fchown	See Chown
Lchown	See Chown
Chroot	Change the root directory
Stat	Take file status information
Lstat	See Stat
Fstat	See Stat
Statfs	Fetching File System Information
Fstatfs	See Statfs
Readdir	Reading directory entries
Getdents	Reading directory entries
Mkdir	Create a table of contents
Mknod	To create an index node
RmDir	Delete Directory
Rename	File name change
Link	Create a link
Symlink	Create a symbolic link
Unlink	Delete link
Readlink	Read the value of a symbolic link
Mount	Installing the file system
Umount	Removing the file system
Ustat	Fetching File System Information
Utime	Change the file access modification time
Utimes	See Utime
Quotactl	Controlling disk quotas

Third, System control

Ioctl	I/O Total control function
_sysctl	Read/write system parameters
Acct	Enable or disable process accounting
Getrlimit	Get System Resource Caps
Setrlimit	Set the system resource limit
Getrusage	Get System Resource Usage
Uselib	Select the binary function library to use
Ioperm	Set Port I/O permissions
Iopl	Change process I/O permission level
Outb	Low-level port operation
Reboot	Reboot
Swapon	Open swap files and devices
Swapoff	Turn off swap files and devices
Bdflush	Controlling the Bdflush daemon
Sysfs	File system type with core support
SysInfo	Get System Information
Adjtimex	Adjust system clock
Alarm	Set the alarm clock for the process
Getitimer	Get timer value
Setitimer	Set Timer value
Gettimeofday	Take time and TimeZone
Settimeofday	Setting times and time zones
Stime	Set system date and time
Time	Get system time
Times	Take process run time
Uname	Get information about the name, version, and host of the current UNIX system
Vhangup	Suspend current terminal
Nfsservctl	Controlling the NFS Daemon
Vm86	Enter analog 8086 mode
Create_module	To create a loadable module item
Delete_module	To delete a loadable module item
Init_module	Initializing modules
Query_module	Query Module Information
*get_kernel_syms	Get the core symbol that has been replaced by Query_module

Four, memory management

Brk	Change the allocation of data segment space
Sbrk	See BRK
Mlock	Memory page Lock
Munlock	Memory page Unlock
Mlockall	Call Process all memory page lock
Munlockall	Call process all memory pages unlock
Mmap	Map Virtual Memory Pages
Munmap	removing memory page mappings
Mremap	Re-map virtual memory address
Msync	Write data from mapped memory back to disk
Mprotect	Set Memory image protection
GetPageSize	Get page size
Sync	Write memory buffer data back to the hard drive
Cacheflush	Writes the contents of the specified buffer back to disk

V. Network Management

Getdomainname	Take domain name
Setdomainname	Setting the domain name
Gethostid	Get host identification number
Sethostid	Set host identification number
GetHostName	Get this host name
SetHostName	Set host name

Six, Socket control

Socketcall	Socket system Call
Socket	Create a socket
Bind	Bind socket to Port
Connect	Connecting to a remote host
Accept	Responding to socket connection requests
Send	Sending information through the socket
SendTo	Send UDP information
Sendmsg	See Send
Recv	Receive information via socket
Recvfrom	Receive UDP information
Recvmsg	See recv
Listen	Listening on the socket port
Select	Polling for multiple sync I/O
Shutdown	Close the connection on the socket
GetSockName	Get local socket name
Getpeername	Gets the socket name of the communication partner
GetSockOpt	Fetch Port Settings
SetSockOpt	Set Port parameters
Sendfile	Transferring data between files or ports
Socketpair	Create a pair of joined nameless sockets

VII. User Management

Getuid	Get user identification number
Setuid	Set User flag number
Getgid	Get group identification number
Setgid	Set Group flag number
Getegid	Get a valid group identification number
Setegid	Set a valid group identification number
Geteuid	Get a valid user identification number
Seteuid	Set a valid user identification number
Setregid	Set up a real and valid group identification number, respectively
Setreuid	Set up a real and valid user identification number, respectively
Getresgid	Get the real, valid, and saved group identification number, respectively.
Setresgid	Set the real, valid, and saved group identification numbers individually
Getresuid	To obtain a true, valid, and saved user identification number, respectively.
Setresuid	Set up a real, valid, and saved user identification number, respectively
Setfsgid	Set the group identification number to use for file system checks
Setfsuid	Set the user identification number to use for file system checks
GetGroups	Get the back Up group flag list
Setgroups	Set up a back up group flag list

VIII. Inter-process communication

Ipc	Inter-process communication total Control call

1, Signal

Sigaction	Set the processing method for the specified signal
Sigprocmask	Perform blocking/unblocking of signals in a signal set based on parameters
Sigpending	Sets the queue for the specified blocked signal
Sigsuspend	Suspend process wait for specific signal
Signal	See Signal
Kill	Signal to a process or process group
*sigblock	Adds a signal to the blocked signal mask and has been replaced by Sigprocmask
*siggetmask	Gets the existing blocking signal mask, which has been replaced by Sigprocmask
*sigsetmask	Replaces an existing blocking signal mask with a given signal mask and has been replaced by Sigprocmask
*sigmask	Converts a given signal to a mask and has been replaced by Sigprocmask
*sigpause	function with Sigsuspend, has been replaced by sigsuspend
Sigvec	A signal-processing function for BSD-compatible functions similar to Sigaction
Ssetmask	ANSI c Signal processing functions that function like sigaction

2. News

Msgctl	Message Control Actions
Msgget	Getting Message Queuing
Msgsnd	Send a message
Msgrcv	Cancel Interest

3, Pipeline

Pipe	Creating pipelines

4, Signal volume

Semctl	Control of Signal Volume
Semget	Get a set of semaphores
Semop	Semaphore operation

5. Shared Memory

Shmctl	Controlling shared memory
Shmget	Get shared memory
Shmat	Connect Shared memory
Shmdt	Remove shared memory