디바이스 드라이버 / 헤더 파일별 함수 정의
유저
#include <fcntl.h>
int open(const char *__file, int __oflag, ...)
#include <unistd.h> : /usr/include/unistd.h
__off_t lseek(int __fd, __off_t __offset, int __whence)
int close(int __fd)
ssize_t read(int __fd, void *buf, size_t __nbytes)
ssize_t write(int __fd, const void *__buf, size_t __n)
unsigned int sleep(unsigned int __seconds)
int usleep(__useconds_t __useconds)
#include <sys/ioctl.h> : /usr/include/arm-linux-gnueabihf/sys/ioctl.h
int ioctl(int __fd, unsigned long int __request, ...)
#include <stdlib.h> : /usr/include/stdlib.h
int atoi(const char *__nptr)
void *malloc(size_t __size)
void free(void *__ptr)
void exit(int __status)
#include <string.h> : /usr/include/string.h
size_t strlen(const char *__string, size_t __maxlen)
커널
커널 디렉터리/include/asm-generic은 필요시 사용되는 것 같다.
asm은 asm-generic로 심볼릭 링크되어있다고 한다.??
#include <linux/cdev.h> : 커널 디렉터리/include/linux/cdev.h
struct cdev{
struct kobject kobj;
struct module *owner;
const struct file_operations *ops;
struct list_head list;
dev_t dev;
unsigned int count;
} __randomize_layout;
struct cdev *cdev_alloc(void)
void cdev_init(struct cdev *, const struct file_opertaions *)
int cdev_add(struct cdev *, dev_t, unsigned);
void cdev_del(struct cdev *);
#include <linux/fs.h> : 커널 디렉터리/include/linux/fs.h
int register_chrdev(unsigned int major, const char *name, const struct file_operations *fops)
void unregister_chrdev(unsigned int major, const char *name)
int register_chrdev_region(dev_t, unsigned, const char *)
void unregister_chrdev_region(dev_t, unsigned);
int register_blkdev(unsigned int, const char *)
void unregister_blkdev(unsigned int, const char *)
static inline unsigned iminor(const struct inode *inode)
static inline unsigned imajor(const struct inode *inode)
struct file_operations {
struct module *owner;
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);
int (*iterate_shared) (struct file *, struct dir_context *);
__poll_t (*poll) (struct file *, struct poll_table_struct *);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
unsigned long mmap_supported_flags;
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
int (*fsync) (struct file *, loff_t, loff_t, int datasync);
int (*fasync) (int, struct file *, int);
int (*lock) (struct file *, int, struct file_lock *);
ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
int (*flock) (struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
int (*setlease)(struct file *, long, struct file_lock **, void **);
long (*fallocate)(struct file *file, int mode, loff_t offset, loff_t len);
void (*show_fdinfo)(struct seq_file *m, struct file *f);
#ifndef CONFIG_MMU
unsigned (*mmap_capabilities)(struct file *);
#endif
ssize_t (*copy_file_range)(struct file *, loff_t, struct file *, loff_t, size_t, unsigned int);
int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*dedupe_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*fadvise)(struct file *, loff_t, loff_t, int);
} __randomize_layout;
#include <linux/kdev_t.h> : 커널 디렉터리/include/linux/kdev_t.h
#define MINOR(dev)
#define MAJOR(dev)
#define MKDEV(ma, mi)
#include <linux/netdevice.h> : 커널 디렉터리/include/linux/netdevice.h
int register_netdevice(struct net_device * dev)
void unregister_netdevice(struct net_device *dev);
#include <linux/io.h> : 커널 디렉터리/include/linux/io.h
+#include <asm/io.h> : 커널 디렉터리/arch/arm/include/asm/io.h
void __iomem *ioremap(resource_size_t res_cookie, size_t size)
void iounmap(volatile void __iomem *iomem_cookie)
#include <linux/uaccess.h> : 커널 디렉터리/include/linux/uaccess.h
unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
#define VERIFY_READ
#define VERIFY_WRITE
+#include <asm/uaccess.h> : 커널 디렉너리/arch/arm/include/asm/uaccess.h
#define access_ok(type, addr, size)
#include <linux/slab.h> : 커널 디렉터리/include/linux/slab.h
void *kmalloc(size_t size, gfp_t flags)
void kfree(const void *)
#include <linux/vmalloc.h> : 커널 디렉터리/include/linux/vmalloc.h
void *vmalloc(unsigned long size)
void vfree(const void *addr)
#include <linux/module.h> : 커널 디렉터리/include/linux/module.h
#define module_init(initfn)
#define module_exit(exitfn)
bool try_module_get(struct module *module)
void module_put(struct module *module)
#include <linux/interrupt.h> : 커널 디렉터리/include/linux/interrupt.h
int __must_check request_irq(unsigned int irq, irq_handle_t handler, unsigned long flags, const char *name, void *dev)
void *free_irq(unsigned int, void *);
#include <linux/export.h> : 커널 디렉터리/include/linux/export.h
#define THIS_MODULE
#include <linux/ioctl.h> : 커널 디렉터리/include/uapi/linux/ioctl.h
+#include <asm/ioctl.h> : 커널 디렉터리/arch/arm/include/generated/uapi/asm/ioctl.h
++#include <asm-generic/ioctl.h> : 커널 디렉터리/include/asm-generic/ioctl.h
+++#include <uapi/asm-generic/ioctl.h> : 커널 디렉터리/include/uapi/asm-generic/ioctl.h
#define _IOC_NONE
#define _IOC_WRITE
#define _IOC_READ
#define _IOC(dir, type, nr, size)
#define _IO(type, nr)
#define _IOR(type, nr, size)
#define _IOW(type, nr, size)
#define _IOWR(type, nr, size)
#define _IOC_DIR(nr)
#define _IOC_TYPE(nr)
#define _IOC_NR(nr)
#define _IOC_SIZE(nr)
#include <linux/delay.h> : 커널 디렉터리/include/linux/delay.h
#define mdelay(n)
void ndelay(unsigned long x)
+#include <asm/delay.h> : 커널 디렉터리/arch/arm/include/asm/delay.h
#define udelay(n)
#include <linux/string.h> : 커널 디렉터리/include/linux/string.h
void *memset(void *, int, __kernel_size_t)
#include <linux/timer.h> : 커널 디렉터리/include/linux/timer.h
struct timer_list{
struct hlist_node entry;
unsigned long expire;
void (*function)(struct timer_list *);
u32 flags;
#ifdef CONFIG_LOCKDEP
struct lockdep_map lockdep_map;
#endif
};
#define timer_setup(timer, callback, flags)
void add_timer(struct timer_list *timer)
int mod_timer(struct timer_list *timer, unsigned long expires)
int del_timer(struct timer_list *timer)
#include <linux/delay.h> : 커널 디렉터리/include/linux/delay.h
#define mdelay(n)
void ndelay(unsigned int x)
+#include <asm/delay.h> : 커널 디렉터리/arch/arm/include/asm/delay.h
#define udelay(n)
#include <linux/jiffies.h> : 커널 디렉터리/include/linux/jiffies.h
u64 get_jiffies_64(void)
+#include <asm/param.h> : 커널 디렉터리/arch/arm/include/generated/uapi/asm/param.h
++#include <asm-generic/param.h> : 커널 디렉터리/include/asm-generic/param.h
#define HZ
#define USER_HZ
#include <linux/irqreturn.h> : 커널 디렉터리/include/linux/irqreturn.h
enum irqreturn{
IRQ_NONE
IRQ_HANDLED
IRQ_WAKE_THREAD
}
#include <linux/errno.h> : 커널 디렉터리/include/linux/errno.h
#define ERESTARTSYS 512
#define ERESTARTNOINTR 513
#define ERESTARTNOHAND 514 /* restart if no handler.. */
#define ENOIOCTLCMD 515 /* No ioctl command */
#define ERESTART_RESTARTBLOCK 516 /* restart by calling sys_restart_syscall */
#define EPROBE_DEFER 517 /* Driver requests probe retry */
#define EOPENSTALE 518 /* open found a stale dentry */
/* Defined for the NFSv3 protocol */
#define EBADHANDLE 521 /* Illegal NFS file handle */
#define ENOTSYNC 522 /* Update synchronization mismatch */
#define EBADCOOKIE 523 /* Cookie is stale */
#define ENOTSUPP 524 /* Operation is not supported */
#define ETOOSMALL 525 /* Buffer or request is too small */
#define ESERVERFAULT 526 /* An untranslatable error occurred */
#define EBADTYPE 527 /* Type not supported by server */
#define EJUKEBOX 528 /* Request initiated, but will not complete before timeout */
#define EIOCBQUEUED 529 /* iocb queued, will get completion event */
#define ERECALLCONFLICT 530 /* conflict with recalled state */
+#include <uapi/linux/errno.h> : 커널 디렉터리/include/uapi/linux/errno.h
++#include <asm/errno.h> : 커널 디렉터리/arch/arm/include/generated/uapi/asm/errno.h
+++#include <asm-generic/errno.h> : 커널 디렉터리/include/uapi/asm-generic/errno.h
#define EDEADLK 35 /* Resource deadlock would occur */
#define ENAMETOOLONG 36 /* File name too long */
#define ENOLCK 37 /* No record locks available */
/*
* This error code is special: arch syscall entry code will return
* -ENOSYS if users try to call a syscall that doesn't exist. To keep
* failures of syscalls that really do exist distinguishable from
* failures due to attempts to use a nonexistent syscall, syscall
* implementations should refrain from returning -ENOSYS.
*/
#define ENOSYS 38 /* Invalid system call number */
#define ENOTEMPTY 39 /* Directory not empty */
#define ELOOP 40 /* Too many symbolic links encountered */
#define EWOULDBLOCK EAGAIN /* Operation would block */
#define ENOMSG 42 /* No message of desired type */
#define EIDRM 43 /* Identifier removed */
#define ECHRNG 44 /* Channel number out of range */
#define EL2NSYNC 45 /* Level 2 not synchronized */
#define EL3HLT 46 /* Level 3 halted */
#define EL3RST 47 /* Level 3 reset */
#define ELNRNG 48 /* Link number out of range */
#define EUNATCH 49 /* Protocol driver not attached */
#define ENOCSI 50 /* No CSI structure available */
#define EL2HLT 51 /* Level 2 halted */
#define EBADE 52 /* Invalid exchange */
#define EBADR 53 /* Invalid request descriptor */
#define EXFULL 54 /* Exchange full */
#define ENOANO 55 /* No anode */
#define EBADRQC 56 /* Invalid request code */
#define EBADSLT 57 /* Invalid slot */
#define EDEADLOCK EDEADLK
#define EBFONT 59 /* Bad font file format */
#define ENOSTR 60 /* Device not a stream */
#define ENODATA 61 /* No data available */
#define ETIME 62 /* Timer expired */
#define ENOSR 63 /* Out of streams resources */
#define ENONET 64 /* Machine is not on the network */
#define ENOPKG 65 /* Package not installed */
#define EREMOTE 66 /* Object is remote */
#define ENOLINK 67 /* Link has been severed */
#define EADV 68 /* Advertise error */
#define ESRMNT 69 /* Srmount error */
#define ECOMM 70 /* Communication error on send */
#define EPROTO 71 /* Protocol error */
#define EMULTIHOP 72 /* Multihop attempted */
#define EDOTDOT 73 /* RFS specific error */
#define EBADMSG 74 /* Not a data message */
#define EOVERFLOW 75 /* Value too large for defined data type */
#define ENOTUNIQ 76 /* Name not unique on network */
#define EBADFD 77 /* File descriptor in bad state */
#define EREMCHG 78 /* Remote address changed */
#define ELIBACC 79 /* Can not access a needed shared library */
#define ELIBBAD 80 /* Accessing a corrupted shared library */
#define ELIBSCN 81 /* .lib section in a.out corrupted */
#define ELIBMAX 82 /* Attempting to link in too many shared libraries */
#define ELIBEXEC 83 /* Cannot exec a shared library directly */
#define EILSEQ 84 /* Illegal byte sequence */
#define ERESTART 85 /* Interrupted system call should be restarted */
#define ESTRPIPE 86 /* Streams pipe error */
#define EUSERS 87 /* Too many users */
#define ENOTSOCK 88 /* Socket operation on non-socket */
#define EDESTADDRREQ 89 /* Destination address required */
#define EMSGSIZE 90 /* Message too long */
#define EPROTOTYPE 91 /* Protocol wrong type for socket */
#define ENOPROTOOPT 92 /* Protocol not available */
#define EPROTONOSUPPORT 93 /* Protocol not supported */
#define ESOCKTNOSUPPORT 94 /* Socket type not supported */
#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
#define EPFNOSUPPORT 96 /* Protocol family not supported */
#define EAFNOSUPPORT 97 /* Address family not supported by protocol */
#define EADDRINUSE 98 /* Address already in use */
#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
#define ENETDOWN 100 /* Network is down */
#define ENETUNREACH 101 /* Network is unreachable */
#define ENETRESET 102 /* Network dropped connection because of reset */
#define ECONNABORTED 103 /* Software caused connection abort */
#define ECONNRESET 104 /* Connection reset by peer */
#define ENOBUFS 105 /* No buffer space available */
#define EISCONN 106 /* Transport endpoint is already connected */
#define ENOTCONN 107 /* Transport endpoint is not connected */
#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS 109 /* Too many references: cannot splice */
#define ETIMEDOUT 110 /* Connection timed out */
#define ECONNREFUSED 111 /* Connection refused */
#define EHOSTDOWN 112 /* Host is down */
#define EHOSTUNREACH 113 /* No route to host */
#define EALREADY 114 /* Operation already in progress */
#define EINPROGRESS 115 /* Operation now in progress */
#define ESTALE 116 /* Stale file handle */
#define EUCLEAN 117 /* Structure needs cleaning */
#define ENOTNAM 118 /* Not a XENIX named type file */
#define ENAVAIL 119 /* No XENIX semaphores available */
#define EISNAM 120 /* Is a named type file */
#define EREMOTEIO 121 /* Remote I/O error */
#define EDQUOT 122 /* Quota exceeded */
#define ENOMEDIUM 123 /* No medium found */
#define EMEDIUMTYPE 124 /* Wrong medium type */
#define ECANCELED 125 /* Operation Canceled */
#define ENOKEY 126 /* Required key not available */
#define EKEYEXPIRED 127 /* Key has expired */
#define EKEYREVOKED 128 /* Key has been revoked */
#define EKEYREJECTED 129 /* Key was rejected by service */
/* for robust mutexes */
#define EOWNERDEAD 130 /* Owner died */
#define ENOTRECOVERABLE 131 /* State not recoverable */
#define ERFKILL 132 /* Operation not possible due to RF-kill */
#define EHWPOISON 133 /* Memory page has hardware error */
++#include <uapi/asm-generic/errno-base.h> : 커널 디렉터리/include/uapi/asm-generic/errno-base.h
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Argument list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file number */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Try again */
#define ENOMEM 12 /* Out of memory */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
#define EBUSY 16 /* Device or resource busy */
#define EEXIST 17 /* File exists */
#define EXDEV 18 /* Cross-device link */
#define ENODEV 19 /* No such device */
#define ENOTDIR 20 /* Not a directory */
#define EISDIR 21 /* Is a directory */
#define EINVAL 22 /* Invalid argument */
#define ENFILE 23 /* File table overflow */
#define EMFILE 24 /* Too many open files */
#define ENOTTY 25 /* Not a typewriter */
#define ETXTBSY 26 /* Text file busy */
#define EFBIG 27 /* File too large */
#define ENOSPC 28 /* No space left on device */
#define ESPIPE 29 /* Illegal seek */
#define EROFS 30 /* Read-only file system */
#define EMLINK 31 /* Too many links */
#define EPIPE 32 /* Broken pipe */
#define EDOM 33 /* Math argument out of domain of func */
#define ERANGE 34 /* Math result not representable */
#include <linux/preempt.h> // 커널 디렉터리/include/linux/preempt.h
#define in_interrupt()