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/* $NetBSD: procfs.h,v 1.82.4.1 2024/04/18 18:22:10 martin Exp $ */
/*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)procfs.h 8.9 (Berkeley) 5/14/95
*/
/*
* Copyright (c) 1993 Jan-Simon Pendry
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)procfs.h 8.9 (Berkeley) 5/14/95
*/
/* This also pulls in __HAVE_PROCFS_MACHDEP */
#include <sys/ptrace.h>
#ifdef _KERNEL
#include <sys/proc.h>
/*
* The different types of node in a procfs filesystem
*/
typedef enum {
PFSauxv, /* ELF Auxiliary Vector */
PFSchroot, /* the process's current root directory */
PFScmdline, /* process command line args */
PFScpuinfo, /* CPU info (if -o linux) */
PFScpustat, /* status info (if -o linux) */
PFScurproc, /* symbolic link for curproc */
PFScwd, /* the process's current working directory */
PFSdevices, /* major/device name mappings (if -o linux) */
PFSemul, /* the process's emulation */
PFSenviron, /* process environment */
PFSexe, /* symlink to the executable file */
PFSfd, /* a directory containing the processes open fd's */
PFSfile, /* the executable file */
PFSfpregs, /* the process's FP register set */
PFSloadavg, /* load average (if -o linux) */
PFSlimit, /* resource limits */
PFSmap, /* memory map */
PFSmaps, /* memory map, Linux style (if -o linux) */
PFSmem, /* the process's memory image */
PFSmeminfo, /* system memory info (if -o linux) */
PFSmounts, /* mounted filesystems (if -o linux) */
PFSnote, /* process notifier */
PFSnotepg, /* process group notifier */
PFSproc, /* a process-specific sub-directory */
PFSregs, /* the process's register set */
PFSroot, /* the filesystem root */
PFSself, /* like curproc, but this is the Linux name */
PFSstat, /* process status (if -o linux) */
PFSstatm, /* process memory info (if -o linux) */
PFSstatus, /* process status */
PFStask, /* task subdirector (if -o linux) */
PFSuptime, /* elapsed time since (if -o linux) */
PFSversion, /* kernel version (if -o linux) */
#ifdef __HAVE_PROCFS_MACHDEP
PROCFS_MACHDEP_NODE_TYPES
#endif
PFSlast, /* track number of types */
} pfstype;
/*
* control data for the proc file system.
*/
struct pfskey {
pfstype pk_type; /* type of procfs node */
pid_t pk_pid; /* associated process */
int pk_fd; /* associated fd if not -1 */
};
struct pfsnode {
LIST_ENTRY(pfsnode) pfs_hash; /* per pid hash list */
struct vnode *pfs_vnode; /* vnode associated with this pfsnode */
struct mount *pfs_mount; /* mount associated with this pfsnode */
struct pfskey pfs_key;
#define pfs_type pfs_key.pk_type
#define pfs_pid pfs_key.pk_pid
#define pfs_fd pfs_key.pk_fd
mode_t pfs_mode; /* mode bits for stat() */
u_long pfs_flags; /* open flags */
uint64_t pfs_fileno; /* unique file id */
};
#define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */
#define PROCFS_MAXNAMLEN 255
#endif /* _KERNEL */
struct procfs_args {
int version;
int flags;
};
#define PROCFS_ARGSVERSION 1
#define PROCFSMNT_LINUXCOMPAT 0x01
#define PROCFSMNT_BITS "\177\20" \
"b\00linuxcompat\0"
/*
* Kernel stuff follows
*/
#ifdef _KERNEL
#define CNEQ(cnp, s, len) \
((cnp)->cn_namelen == (len) && \
(memcmp((s), (cnp)->cn_nameptr, (len)) == 0))
#define UIO_MX 32
static __inline ino_t
procfs_fileno(pid_t _pid, pfstype _type, int _fd)
{
ino_t _ino;
switch (_type) {
case PFSroot:
return 2;
case PFScurproc:
return 3;
case PFSself:
return 4;
default:
_ino = _pid + 1;
if (_fd != -1)
_ino = _ino << 32 | _fd;
return _ino * PFSlast + _type;
}
}
#define PROCFS_FILENO(pid, type, fd) procfs_fileno(pid, type, fd)
#define PROCFS_TYPE(type) ((type) % PFSlast)
struct procfsmount {
int pmnt_flags;
};
#define VFSTOPROC(mp) ((struct procfsmount *)(mp)->mnt_data)
/*
* Convert between pfsnode vnode
*/
#define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data)
#define PFSTOV(pfs) ((pfs)->pfs_vnode)
typedef struct vfs_namemap vfs_namemap_t;
struct vfs_namemap {
const char *nm_name;
int nm_val;
};
int vfs_getuserstr(struct uio *, char *, int *);
const vfs_namemap_t *vfs_findname(const vfs_namemap_t *, const char *, int);
struct mount;
struct proc *procfs_proc_find(struct mount *, pid_t);
bool procfs_use_linux_compat(struct mount *);
static inline bool
procfs_proc_is_linux_compat(void)
{
const char *emulname = curlwp->l_proc->p_emul->e_name;
return (strncmp(emulname, "linux", 5) == 0);
}
int procfs_proc_lock(struct mount *, int, struct proc **, int);
void procfs_proc_unlock(struct proc *);
int procfs_allocvp(struct mount *, struct vnode **, pid_t, pfstype, int);
int procfs_donote(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_doregs(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_dofpregs(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_domem(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_do_pid_stat(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_dostatus(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_domap(struct lwp *, struct proc *, struct pfsnode *,
struct uio *, int);
int procfs_doprocargs(struct lwp *, struct proc *, struct pfsnode *,
struct uio *, int);
int procfs_domeminfo(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_dodevices(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_docpuinfo(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_docpustat(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_doloadavg(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_do_pid_statm(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_dofd(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_douptime(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_domounts(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_doemul(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_doversion(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_doauxv(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
int procfs_dolimit(struct lwp *, struct proc *, struct pfsnode *,
struct uio *);
void procfs_hashrem(struct pfsnode *);
int procfs_getfp(struct pfsnode *, struct proc *, struct file **);
/* functions to check whether or not files should be displayed */
int procfs_validauxv(struct lwp *, struct mount *);
int procfs_validfile(struct lwp *, struct mount *);
int procfs_validfpregs(struct lwp *, struct mount *);
int procfs_validregs(struct lwp *, struct mount *);
int procfs_validmap(struct lwp *, struct mount *);
int procfs_rw(void *);
int procfs_getcpuinfstr(char *, size_t *);
#define PROCFS_LOCKED 0x01
#define PROCFS_WANT 0x02
extern int (**procfs_vnodeop_p)(void *);
extern struct vfsops procfs_vfsops;
int procfs_root(struct mount *, int, struct vnode **);
#ifdef __HAVE_PROCFS_MACHDEP
struct vattr;
void procfs_machdep_allocvp(struct vnode *);
int procfs_machdep_rw(struct lwp *, struct lwp *, struct pfsnode *,
struct uio *);
int procfs_machdep_getattr(struct vnode *, struct vattr *, struct proc *);
#endif
#endif /* _KERNEL */
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