/* $NetBSD: procfs.h,v 1.82 2022/01/19 10:23:00 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 #ifdef _KERNEL #include /* * 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 { struct vnode *pfs_vnode; /* vnode 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 { void *pmnt_exechook; 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_revoke_vnodes(struct proc *, void *); 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 */