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Add struct xfile, which will be used instead of struct file for sysctl

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purposes.

Sponsored by:	DARPA, NAI Labs
This commit is contained in:
Dag-Erling Smørgrav 2002-07-31 12:16:51 +00:00
parent 84fc0d7e7f
commit 84baf7a20f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=101038
1 changed files with 32 additions and 8 deletions
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40
sys/sys/file.h
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@ -40,9 +40,7 @@
#ifndef _KERNEL
#include <sys/fcntl.h>
#include <sys/unistd.h>
#endif
#ifdef _KERNEL
#else
#include <sys/queue.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
@ -54,6 +52,16 @@ struct knote;
struct vnode;
struct socket;
#endif /* _KERNEL */
#define DTYPE_VNODE 1 /* file */
#define DTYPE_SOCKET 2 /* communications endpoint */
#define DTYPE_PIPE 3 /* pipe */
#define DTYPE_FIFO 4 /* fifo (named pipe) */
#define DTYPE_KQUEUE 5 /* event queue */
#ifdef _KERNEL
/*
* Kernel descriptor table.
* One entry for each open kernel vnode and socket.
@ -67,11 +75,6 @@ struct socket;
struct file {
LIST_ENTRY(file) f_list;/* (fl) list of active files */
short f_gcflag; /* used by thread doing fd garbage collection */
#define DTYPE_VNODE 1 /* file */
#define DTYPE_SOCKET 2 /* communications endpoint */
#define DTYPE_PIPE 3 /* pipe */
#define DTYPE_FIFO 4 /* fifo (named pipe) */
#define DTYPE_KQUEUE 5 /* event queue */
short f_type; /* descriptor type */
int f_count; /* (f) reference count */
int f_msgcount; /* (f) references from message queue */
@ -104,6 +107,27 @@ struct file {
struct mtx *f_mtxp; /* mutex to protect data */
};
#endif /* _KERNEL */
/*
* Userland version of struct file, for sysctl
*/
struct xfile {
size_t xf_size; /* size of struct xfile */
pid_t xf_pid; /* owning process */
uid_t xf_uid; /* effective uid of owning process */
int xf_fd; /* descriptor number */
void *xf_file; /* address of struct file */
short xf_type; /* descriptor type */
int xf_count; /* reference count */
int xf_msgcount; /* references from message queue */
off_t xf_offset; /* file offset */
void *xf_data; /* pointer to vnode or socket */
u_int xf_flag; /* flags (see fcntl.h) */
};
#ifdef _KERNEL
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_FILE);
#endif