Basic linux kernel calls (ARM)

• read - Reads data from a file descriptor.
• write - Writes data to a file descriptor.
• open - Opens a file and returns a file descriptor.
• close - Closes a file descriptor.
• stat - Retrieves file status.
• fstat - Retrieves file status given a file descriptor.
• lstat - Retrieves file status, but does not follow symbolic links.
• poll - Waits for some event on a file descriptor.
• lseek - Repositions the file offset of an open file.
• mmap - Maps files or devices into memory.
• mprotect - Sets protection on a region of memory.
• munmap - Unmaps a region of memory.
• brk - Changes the location of the program break, which defines the end of the process’s data segment.
• rt_sigaction - Examines and changes a signal action.
• rt_sigprocmask - Examines and changes blocked signals.
• ioctl - Manipulates the underlying device parameters of special files.
• pread64 - Reads data from a file descriptor at a given offset.
• pwrite64 - Writes data to a file descriptor at a given offset.
• readv - Reads data from multiple buffers.
• writev - Writes data to multiple buffers.

First 100 System calls

NR	SYSCALL NAME	x8	ARG0 (x0)	ARG1 (x1)	ARG2 (x2)	ARG3 (x3)	ARG4 (x4)	ARG5 (x5)
0	io_setup	0	unsigned nr_reqs	aio_context_t *ctx	-	-	-	-
1	io_destroy	1	aio_context_t ctx	-	-	-	-	-
2	io_submit	2	aio_context_t	long	struct iocb * *	-	-	-
3	io_cancel	3	aio_context_t ctx_id	struct iocb *iocb	struct io_event *result	-	-	-
4	io_getevents	4	aio_context_t ctx_id	long min_nr	long nr	struct io_event *events	struct __kernel_timespec *timeout	-
5	setxattr	5	const char *path	const char *name	const void *value	size_t size	int flags	-
6	lsetxattr	6	const char *path	const char *name	const void *value	size_t size	int flags	-
7	fsetxattr	7	int fd	const char *name	const void *value	size_t size	int flags	-
8	getxattr	8	const char *path	const char *name	void *value	size_t size	-	-
9	lgetxattr	9	const char *path	const char *name	void *value	size_t size	-	-
10	fgetxattr	A	int fd	const char *name	void *value	size_t size	-	-
11	listxattr	B	const char *path	char *list	size_t size	-	-	-
12	llistxattr	C	const char *path	char *list	size_t size	-	-	-
13	flistxattr	D	int fd	char *list	size_t size	-	-	-
14	removexattr	E	const char *path	const char *name	-	-	-	-
15	lremovexattr	F	const char *path	const char *name	-	-	-	-
16	fremovexattr	10	int fd	const char *name	-	-	-	-
17	getcwd	11	char *buf	unsigned long size	-	-	-	-
18	lookup_dcookie	12	u64 cookie64	char *buf	size_t len	-	-	-
19	eventfd2	13	unsigned int count	int flags	-	-	-	-
20	epoll_create1	14	int flags	-	-	-	-	-
21	epoll_ctl	15	int epfd	int op	int fd	struct epoll_event *event	-	-
22	epoll_pwait	16	int epfd	struct epoll_event *events	int maxevents	int timeout	const sigset_t *sigmask	size_t sigsetsize
23	dup	17	unsigned int fildes	-	-	-	-	-
24	dup3	18	unsigned int oldfd	unsigned int newfd	int flags	-	-	-
25	fcntl	19	unsigned int fd	unsigned int cmd	unsigned long arg	-	-	-
26	inotify_init1	1A	int flags	-	-	-	-	-
27	inotify_add_watch	1B	int fd	const char *path	u32 mask	-	-	-
28	inotify_rm_watch	1C	int fd	__s32 wd	-	-	-	-
29	ioctl	1D	unsigned int fd	unsigned int cmd	unsigned long arg	-	-	-
30	ioprio_set	1E	int which	int who	int ioprio	-	-	-
31	ioprio_get	1F	int which	int who	-	-	-	-
32	flock	20	unsigned int fd	unsigned int cmd	-	-	-	-
33	mknodat	21	int dfd	const char * filename	umode_t mode	unsigned dev	-	-
34	mkdirat	22	int dfd	const char * pathname	umode_t mode	-	-	-
35	unlinkat	23	int dfd	const char * pathname	int flag	-	-	-
36	symlinkat	24	const char * oldname	int newdfd	const char * newname	-	-	-
37	linkat	25	int olddfd	const char *oldname	int newdfd	const char *newname	int flags	-
38	renameat	26	int olddfd	const char * oldname	int newdfd	const char * newname	-	-
39	umount2	27	?	?	?	?	?	?
40	mount	28	char *dev_name	char *dir_name	char *type	unsigned long flags	void *data	-
41	pivot_root	29	const char *new_root	const char *put_old	-	-	-	-
42	nfsservctl	2A	?	?	?	?	?	?
43	statfs	2B	const char * path	struct statfs *buf	-	-	-	-
44	fstatfs	2C	unsigned int fd	struct statfs *buf	-	-	-	-
45	truncate	2D	const char *path	long length	-	-	-	-
46	ftruncate	2E	unsigned int fd	unsigned long length	-	-	-	-
47	fallocate	2F	int fd	int mode	loff_t offset	loff_t len	-	-
48	faccessat	30	int dfd	const char *filename	int mode	-	-	-
49	chdir	31	const char *filename	-	-	-	-	-
50	fchdir	32	unsigned int fd	-	-	-	-	-
51	chroot	33	const char *filename	-	-	-	-	-
52	fchmod	34	unsigned int fd	umode_t mode	-	-	-	-
53	fchmodat	35	int dfd	const char * filename	umode_t mode	-	-	-
54	fchownat	36	int dfd	const char *filename	uid_t user	gid_t group	int flag	-
55	fchown	37	unsigned int fd	uid_t user	gid_t group	-	-	-
56	openat	38	int dfd	const char *filename	int flags	umode_t mode	-	-
57	close	39	unsigned int fd	-	-	-	-	-
58	vhangup	3A	-	-	-	-	-	-
59	pipe2	3B	int *fildes	int flags	-	-	-	-
60	quotactl	3C	unsigned int cmd	const char *special	qid_t id	void *addr	-	-
61	getdents64	3D	unsigned int fd	struct linux_dirent64 *dirent	unsigned int count	-	-	-
62	lseek	3E	unsigned int fd	off_t offset	unsigned int whence	-	-	-
63	read	3F	unsigned int fd	char *buf	size_t count	-	-	-
64	write	40	unsigned int fd	const char *buf	size_t count	-	-	-
65	readv	41	unsigned long fd	const struct iovec *vec	unsigned long vlen	-	-	-
66	writev	42	unsigned long fd	const struct iovec *vec	unsigned long vlen	-	-	-
67	pread64	43	unsigned int fd	char *buf	size_t count	loff_t pos	-	-
68	pwrite64	44	unsigned int fd	const char *buf	size_t count	loff_t pos	-	-
69	preadv	45	unsigned long fd	const struct iovec *vec	unsigned long vlen	unsigned long pos_l	unsigned long pos_h	-
70	pwritev	46	unsigned long fd	const struct iovec *vec	unsigned long vlen	unsigned long pos_l	unsigned long pos_h	-
71	sendfile	47	int out_fd	int in_fd	off_t *offset	size_t count	-	-
72	pselect6	48	int	fd_set *	fd_set *	fd_set *	struct __kernel_timespec *	void *
73	ppoll	49	struct pollfd *	unsigned int	struct __kernel_timespec *	const sigset_t *	size_t	-
74	signalfd4	4A	int ufd	sigset_t *user_mask	size_t sizemask	int flags	-	-
75	vmsplice	4B	int fd	const struct iovec *iov	unsigned long nr_segs	unsigned int flags	-	-
76	splice	4C	int fd_in	loff_t *off_in	int fd_out	loff_t *off_out	size_t len	unsigned int flags
77	tee	4D	int fdin	int fdout	size_t len	unsigned int flags	-	-
78	readlinkat	4E	int dfd	const char *path	char *buf	int bufsiz	-	-
79	newfstatat	4F	int dfd	const char *filename	struct stat *statbuf	int flag	-	-
80	fstat	50	unsigned int fd	struct __old_kernel_stat *statbuf	-	-	-	-
81	sync	51	-	-	-	-	-	-
82	fsync	52	unsigned int fd	-	-	-	-	-
83	fdatasync	53	unsigned int fd	-	-	-	-	-
84	sync_file_range	54	int fd	loff_t offset	loff_t nbytes	unsigned int flags	-	-
85	timerfd_create	55	int clockid	int flags	-	-	-	-
86	timerfd_settime	56	int ufd	int flags	const struct __kernel_itimerspec *utmr	struct __kernel_itimerspec *otmr	-	-
87	timerfd_gettime	57	int ufd	struct __kernel_itimerspec *otmr	-	-	-	-
88	utimensat	58	int dfd	const char *filename	struct __kernel_timespec *utimes	int flags	-	-
89	acct	59	const char *name	-	-	-	-	-
90	capget	5A	cap_user_header_t header	cap_user_data_t dataptr	-	-	-	-
91	capset	5B	cap_user_header_t header	const cap_user_data_t data	-	-	-	-
92	personality	5C	unsigned int personality	-	-	-	-	-
93	exit	5D	int error_code	-	-	-	-	-
94	exit_group	5E	int error_code	-	-	-	-	-
95	waitid	5F	int which	pid_t pid	struct siginfo *infop	int options	struct rusage *ru	-
96	set_tid_address	60	int *tidptr	-	-	-	-	-
97	unshare	61	unsigned long unshare_flags	-	-	-	-	-
98	futex	62	u32 *uaddr	int op	u32 val	struct __kernel_timespec *utime	u32 *uaddr2	u32 val3
99	set_robust_list	63	struct robust_list_head *head	size_t len	-	-	-	-
100	get_robust_list	64	int pid	struct robust_list_head * *head_ptr	size_t *len_ptr	-	-	-