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freebsd-skq/lib/libprocstat/libprocstat.h
John Baldwin 688f8b822c Remove the cloned file descriptors for /dev/crypto. 
Crypto file descriptors were added in the original OCF import as a way
to provide per-open data (specifically the list of symmetric
sessions).  However, this gives a bit of a confusing API where one has
to open /dev/crypto and then invoke an ioctl to obtain a second file
descriptor.  This also does not match the API used with /dev/crypto on
other BSDs or with Linux's /dev/crypto driver.

Character devices have gained support for per-open data via cdevpriv
since OCF was imported, so use cdevpriv to simplify the userland API
by permitting ioctls directly on /dev/crypto descriptors.

To provide backwards compatibility, CRIOGET now opens another
/dev/crypto descriptor via kern_openat() rather than dup'ing the
existing file descriptor.  This preserves prior semantics in case
CRIOGET is invoked multiple times on a single file descriptor.

Reviewed by:	markj
Relnotes:	yes
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D27302
2020-11-25 00:10:54 +00:00

233 lines
7.5 KiB
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009 Stanislav Sedov <stas@FreeBSD.org>
* Copyright (c) 2017 Dell EMC
* All rights reserved.
*
* 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.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _LIBPROCSTAT_H_
#define _LIBPROCSTAT_H_
/*
* XXX: sys/elf.h conflicts with zfs_context.h. Workaround this by not
* including conflicting parts when building zfs code.
*/
#ifndef ZFS
#include <sys/elf.h>
#endif
#include <sys/caprights.h>
/*
* Vnode types.
*/
#define PS_FST_VTYPE_VNON 1
#define PS_FST_VTYPE_VREG 2
#define PS_FST_VTYPE_VDIR 3
#define PS_FST_VTYPE_VBLK 4
#define PS_FST_VTYPE_VCHR 5
#define PS_FST_VTYPE_VLNK 6
#define PS_FST_VTYPE_VSOCK 7
#define PS_FST_VTYPE_VFIFO 8
#define PS_FST_VTYPE_VBAD 9
#define PS_FST_VTYPE_UNKNOWN 255
/*
* Descriptor types.
*/
#define PS_FST_TYPE_VNODE 1
#define PS_FST_TYPE_FIFO 2
#define PS_FST_TYPE_SOCKET 3
#define PS_FST_TYPE_PIPE 4
#define PS_FST_TYPE_PTS 5
#define PS_FST_TYPE_KQUEUE 6
/* was PS_FST_TYPE_CRYPTO 7 */
#define PS_FST_TYPE_MQUEUE 8
#define PS_FST_TYPE_SHM 9
#define PS_FST_TYPE_SEM 10
#define PS_FST_TYPE_UNKNOWN 11
#define PS_FST_TYPE_NONE 12
#define PS_FST_TYPE_PROCDESC 13
#define PS_FST_TYPE_DEV 14
/*
* Special descriptor numbers.
*/
#define PS_FST_UFLAG_RDIR 0x0001
#define PS_FST_UFLAG_CDIR 0x0002
#define PS_FST_UFLAG_JAIL 0x0004
#define PS_FST_UFLAG_TRACE 0x0008
#define PS_FST_UFLAG_TEXT 0x0010
#define PS_FST_UFLAG_MMAP 0x0020
#define PS_FST_UFLAG_CTTY 0x0040
/*
* Descriptor flags.
*/
#define PS_FST_FFLAG_READ 0x0001
#define PS_FST_FFLAG_WRITE 0x0002
#define PS_FST_FFLAG_NONBLOCK 0x0004
#define PS_FST_FFLAG_APPEND 0x0008
#define PS_FST_FFLAG_SHLOCK 0x0010
#define PS_FST_FFLAG_EXLOCK 0x0020
#define PS_FST_FFLAG_ASYNC 0x0040
#define PS_FST_FFLAG_SYNC 0x0080
#define PS_FST_FFLAG_NOFOLLOW 0x0100
#define PS_FST_FFLAG_CREAT 0x0200
#define PS_FST_FFLAG_TRUNC 0x0400
#define PS_FST_FFLAG_EXCL 0x0800
#define PS_FST_FFLAG_DIRECT 0x1000
#define PS_FST_FFLAG_EXEC 0x2000
#define PS_FST_FFLAG_HASLOCK 0x4000
struct kinfo_kstack;
struct kinfo_vmentry;
struct procstat;
struct ptrace_lwpinfo;
struct rlimit;
struct filestat {
int fs_type; /* Descriptor type. */
int fs_flags; /* filestat specific flags. */
int fs_fflags; /* Descriptor access flags. */
int fs_uflags; /* How this file is used. */
int fs_fd; /* File descriptor number. */
int fs_ref_count; /* Reference count. */
off_t fs_offset; /* Seek location. */
void *fs_typedep; /* Type dependent data. */
char *fs_path;
STAILQ_ENTRY(filestat) next;
cap_rights_t fs_cap_rights; /* Capability rights, if flag set. */
};
struct vnstat {
uint64_t vn_fileid;
uint64_t vn_size;
uint64_t vn_dev;
uint64_t vn_fsid;
char *vn_mntdir;
int vn_type;
uint16_t vn_mode;
char vn_devname[SPECNAMELEN + 1];
};
struct ptsstat {
uint64_t dev;
char devname[SPECNAMELEN + 1];
};
struct pipestat {
size_t buffer_cnt;
uint64_t addr;
uint64_t peer;
};
struct semstat {
uint32_t value;
uint16_t mode;
};
struct shmstat {
uint64_t size;
uint16_t mode;
};
struct sockstat {
uint64_t inp_ppcb;
uint64_t so_addr;
uint64_t so_pcb;
uint64_t unp_conn;
int dom_family;
int proto;
int so_rcv_sb_state;
int so_snd_sb_state;
struct sockaddr_storage sa_local; /* Socket address. */
struct sockaddr_storage sa_peer; /* Peer address. */
int type;
char dname[32];
unsigned int sendq;
unsigned int recvq;
};
STAILQ_HEAD(filestat_list, filestat);
__BEGIN_DECLS
void procstat_close(struct procstat *procstat);
void procstat_freeargv(struct procstat *procstat);
#ifndef ZFS
void procstat_freeauxv(struct procstat *procstat, Elf_Auxinfo *auxv);
#endif
void procstat_freeenvv(struct procstat *procstat);
void procstat_freegroups(struct procstat *procstat, gid_t *groups);
void procstat_freekstack(struct procstat *procstat,
struct kinfo_kstack *kkstp);
void procstat_freeprocs(struct procstat *procstat, struct kinfo_proc *p);
void procstat_freefiles(struct procstat *procstat,
struct filestat_list *head);
void procstat_freeptlwpinfo(struct procstat *procstat,
struct ptrace_lwpinfo *pl);
void procstat_freevmmap(struct procstat *procstat,
struct kinfo_vmentry *vmmap);
struct filestat_list *procstat_getfiles(struct procstat *procstat,
struct kinfo_proc *kp, int mmapped);
struct kinfo_proc *procstat_getprocs(struct procstat *procstat,
int what, int arg, unsigned int *count);
int procstat_get_pipe_info(struct procstat *procstat, struct filestat *fst,
struct pipestat *pipe, char *errbuf);
int procstat_get_pts_info(struct procstat *procstat, struct filestat *fst,
struct ptsstat *pts, char *errbuf);
int procstat_get_sem_info(struct procstat *procstat, struct filestat *fst,
struct semstat *sem, char *errbuf);
int procstat_get_shm_info(struct procstat *procstat, struct filestat *fst,
struct shmstat *shm, char *errbuf);
int procstat_get_socket_info(struct procstat *procstat, struct filestat *fst,
struct sockstat *sock, char *errbuf);
int procstat_get_vnode_info(struct procstat *procstat, struct filestat *fst,
struct vnstat *vn, char *errbuf);
char **procstat_getargv(struct procstat *procstat, struct kinfo_proc *p,
size_t nchr);
#ifndef ZFS
Elf_Auxinfo *procstat_getauxv(struct procstat *procstat,
struct kinfo_proc *kp, unsigned int *cntp);
#endif
struct ptrace_lwpinfo *procstat_getptlwpinfo(struct procstat *procstat,
unsigned int *cntp);
char **procstat_getenvv(struct procstat *procstat, struct kinfo_proc *p,
size_t nchr);
gid_t *procstat_getgroups(struct procstat *procstat, struct kinfo_proc *kp,
unsigned int *count);
struct kinfo_kstack *procstat_getkstack(struct procstat *procstat,
struct kinfo_proc *kp, unsigned int *count);
int procstat_getosrel(struct procstat *procstat, struct kinfo_proc *kp,
int *osrelp);
int procstat_getpathname(struct procstat *procstat, struct kinfo_proc *kp,
char *pathname, size_t maxlen);
int procstat_getrlimit(struct procstat *procstat, struct kinfo_proc *kp,
int which, struct rlimit* rlimit);
int procstat_getumask(struct procstat *procstat, struct kinfo_proc *kp,
unsigned short* umask);
struct kinfo_vmentry *procstat_getvmmap(struct procstat *procstat,
struct kinfo_proc *kp, unsigned int *count);
struct procstat *procstat_open_core(const char *filename);
struct procstat *procstat_open_sysctl(void);
struct procstat *procstat_open_kvm(const char *nlistf, const char *memf);
__END_DECLS
#endif /* !_LIBPROCSTAT_H_ */
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