xv6/syscall.c File Reference

#include "types.h"
#include "defs.h"
#include "param.h"
#include "mmu.h"
#include "proc.h"
#include "x86.h"
#include "syscall.h"

Go to the source code of this file.

Functions
int	fetchint (struct proc *p, uint addr, int *ip)
int	fetchstr (struct proc *p, uint addr, char **pp)
int	argint (int n, int *ip)
int	argptr (int n, char **pp, int size)
int	argstr (int n, char **pp)
int	sys_chdir (void)
int	sys_close (void)
int	sys_dup (void)
int	sys_exec (void)
int	sys_exit (void)
int	sys_fork (void)
int	sys_fstat (void)
int	sys_getpid (void)
int	sys_kill (void)
int	sys_link (void)
int	sys_mkdir (void)
int	sys_mknod (void)
int	sys_open (void)
int	sys_pipe (void)
int	sys_read (void)
int	sys_sbrk (void)
int	sys_sleep (void)
int	sys_unlink (void)
int	sys_wait (void)
int	sys_write (void)
void	syscall (void)
Variables
static int(*	syscalls [])(void)

---

Function Documentation

int argint	(	int	n,
		int *	ip
	)

Definition at line 45 of file syscall.c.

References fetchint().

Referenced by argfd(), argptr(), argstr(), sys_exec(), sys_kill(), sys_mknod(), sys_open(), sys_read(), sys_sbrk(), sys_sleep(), and sys_write().

int argptr	(	int	n,
		char **	pp,
		int	size
	)

Definition at line 54 of file syscall.c.

References argint().

Referenced by sys_fstat(), sys_pipe(), sys_read(), and sys_write().

int argstr	(	int	n,
		char **	pp
	)

Definition at line 71 of file syscall.c.

References argint(), and fetchstr().

Referenced by sys_chdir(), sys_exec(), sys_link(), sys_mkdir(), sys_mknod(), sys_open(), and sys_unlink().

int fetchint	(	struct proc *	p,
		uint	addr,
		int *	ip
	)

Definition at line 17 of file syscall.c.

References proc::mem, and proc::sz.

Referenced by argint(), and sys_exec().

int fetchstr	(	struct proc *	p,
		uint	addr,
		char **	pp
	)

Definition at line 29 of file syscall.c.

References proc::mem, and proc::sz.

Referenced by argstr(), and sys_exec().

int sys_chdir

(

void

)

Definition at line 327 of file sysfile.c.

References argstr(), ilock(), iput(), iunlock(), iunlockput(), namei(), T_DIR, and inode::type.

int sys_close

(

void

)

Definition at line 85 of file sysfile.c.

References argfd(), and fileclose().

int sys_dup

(

void

)

Definition at line 47 of file sysfile.c.

References argfd(), fdalloc(), and filedup().

int sys_exec

(

void

)

Definition at line 346 of file sysfile.c.

References argint(), argstr(), argv, exec(), fetchint(), fetchstr(), memset(), and NELEM.

int sys_exit

(

void

)

Definition at line 15 of file sysproc.c.

References exit().

int sys_fork

(

void

)

Definition at line 9 of file sysproc.c.

References fork().

int sys_fstat

(

void

)

Definition at line 98 of file sysfile.c.

References argfd(), argptr(), and filestat().

int sys_getpid

(

void

)

Definition at line 38 of file sysproc.c.

int sys_kill

(

void

)

Definition at line 28 of file sysproc.c.

References argint(), and kill().

int sys_link

(

void

)

Definition at line 110 of file sysfile.c.

References argstr(), inode::dev, dirlink(), DIRSIZ, ilock(), inode::inum, iput(), iunlock(), iunlockput(), iupdate(), name, namei(), nameiparent(), inode::nlink, T_DIR, and inode::type.

int sys_mkdir

(

void

)

Definition at line 298 of file sysfile.c.

References argstr(), create(), iunlockput(), and T_DIR.

int sys_mknod

(

void

)

Definition at line 310 of file sysfile.c.

References argint(), argstr(), create(), iunlockput(), inode::major, inode::minor, and T_DEV.

int sys_open

(

void

)

Definition at line 257 of file sysfile.c.

References argint(), argstr(), create(), fdalloc(), filealloc(), fileclose(), ilock(), file::ip, iunlock(), iunlockput(), namei(), O_CREATE, O_RDONLY, O_RDWR, O_WRONLY, file::off, file::readable, T_DIR, T_FILE, file::type, inode::type, and file::writable.

int sys_pipe

(

void

)

Definition at line 371 of file sysfile.c.

References argptr(), fdalloc(), fileclose(), and pipealloc().

int sys_read

(

void

)

Definition at line 61 of file sysfile.c.

References argfd(), argint(), argptr(), and fileread().

int sys_sbrk

(

void

)

Definition at line 44 of file sysproc.c.

References argint(), and growproc().

int sys_sleep

(

void

)

Definition at line 58 of file sysproc.c.

References acquire(), argint(), release(), sleep(), ticks, and tickslock.

int sys_unlink

(

void

)

Definition at line 164 of file sysfile.c.

References argstr(), dirlookup(), DIRSIZ, ilock(), isdirempty(), iunlockput(), iupdate(), memset(), name, namecmp(), nameiparent(), inode::nlink, panic(), T_DIR, inode::type, and writei().

int sys_wait

(

void

)

Definition at line 22 of file sysproc.c.

References wait().

int sys_write

(

void

)

Definition at line 73 of file sysfile.c.

References argfd(), argint(), argptr(), and filewrite().

void syscall

(

void

)

Definition at line 124 of file syscall.c.

References cprintf(), NELEM, and syscalls.

Referenced by trap().

---

Variable Documentation

int(* syscalls[])(void) [static]

Initial value:

 {
[SYS_chdir]   sys_chdir,
[SYS_close]   sys_close,
[SYS_dup]     sys_dup,
[SYS_exec]    sys_exec,
[SYS_exit]    sys_exit,
[SYS_fork]    sys_fork,
[SYS_fstat]   sys_fstat,
[SYS_getpid]  sys_getpid,
[SYS_kill]    sys_kill,
[SYS_link]    sys_link,
[SYS_mkdir]   sys_mkdir,
[SYS_mknod]   sys_mknod,
[SYS_open]    sys_open,
[SYS_pipe]    sys_pipe,
[SYS_read]    sys_read,
[SYS_sbrk]    sys_sbrk,
[SYS_sleep]   sys_sleep,
[SYS_unlink]  sys_unlink,
[SYS_wait]    sys_wait,
[SYS_write]   sys_write,
}

Referenced by syscall().