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HardenedBSD/lib/libprocstat/libprocstat_compat.c
Gleb Smirnoff 1a8d176432 inpcb: fully retire inp_ppcb pointer 
Before a protocol specific control block started to embed inpcb in self
(see 0aa120d52f, e68b379244, 483fe96511) this pointer used to point
at it.

Retain kf_sock_inpcb field in the struct kinfo_file in <sys/user.h>.  The
exp-run detected a minimal use of the field in ports:
  * sysutils/lsof - patched upstream
  * net-mgmt/netdata  - patch accepted upstream
  * emulators/qemu-user-static - upstream master branch seems not using
    the field anymore
We can keep the field around for some time, but eventually it may be
reused for something else.

PR:			277659 (exp-run)
Reviewed by:		tuexen
Differential Revision:	https://reviews.freebsd.org/D44491
2024-03-29 12:18:32 -07:00

260 lines
7.8 KiB
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/*-
* Copyright (c) 2014 Gleb Kurtsou <gleb@FreeBSD.org>
* 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.
*/
#include <sys/param.h>
#include <sys/user.h>
#include <sys/socket.h>
#include <string.h>
#include "libprocstat.h"
#define SPECNAMELEN_COMPAT12 63
struct freebsd11_ptsstat {
uint32_t dev;
char devname[SPECNAMELEN_COMPAT12 + 1];
};
struct freebsd11_vnstat {
uint64_t vn_fileid;
uint64_t vn_size;
char *vn_mntdir;
uint32_t vn_dev;
uint32_t vn_fsid;
int vn_type;
uint16_t vn_mode;
char vn_devname[SPECNAMELEN_COMPAT12 + 1];
};
struct freebsd11_semstat {
uint32_t value;
uint16_t mode;
};
struct freebsd11_shmstat {
uint64_t size;
uint16_t mode;
};
struct freebsd11_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];
};
struct freebsd12_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_COMPAT12 + 1];
};
struct freebsd12_ptsstat {
uint64_t dev;
char devname[SPECNAMELEN_COMPAT12 + 1];
};
int freebsd11_procstat_get_pts_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_ptsstat *pts, char *errbuf);
int freebsd12_procstat_get_pts_info(struct procstat *procstat,
struct filestat *fst, struct freebsd12_ptsstat *pts_compat, char *errbuf);
int freebsd11_procstat_get_sem_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_semstat *sem, char *errbuf);
int freebsd11_procstat_get_shm_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_shmstat *shm, char *errbuf);
int freebsd11_procstat_get_socket_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_sockstat *sock, char *errbuf);
int freebsd11_procstat_get_vnode_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_vnstat *vn, char *errbuf);
int freebsd12_procstat_get_vnode_info(struct procstat *procstat,
struct filestat *fst, struct freebsd12_vnstat *vn_compat, char *errbuf);
static const char trunc_name[] = "<TRUNCATED>";
int
freebsd11_procstat_get_pts_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_ptsstat *pts_compat, char *errbuf)
{
struct ptsstat pts;
int r;
r = procstat_get_pts_info(procstat, fst, &pts, errbuf);
if (r != 0)
return (r);
pts_compat->dev = pts.dev;
if (strlen(pts.devname) >= sizeof(pts_compat->devname))
strcpy(pts_compat->devname, trunc_name);
else
memcpy(pts_compat->devname, pts.devname,
sizeof(pts_compat->devname));
return (0);
}
int
freebsd12_procstat_get_pts_info(struct procstat *procstat,
struct filestat *fst, struct freebsd12_ptsstat *pts_compat, char *errbuf)
{
struct ptsstat pts;
int r;
r = procstat_get_pts_info(procstat, fst, &pts, errbuf);
if (r != 0)
return (r);
pts_compat->dev = pts.dev;
if (strlen(pts.devname) >= sizeof(pts_compat->devname))
strcpy(pts_compat->devname, trunc_name);
else
memcpy(pts_compat->devname, pts.devname,
sizeof(pts_compat->devname));
return (0);
}
int
freebsd11_procstat_get_sem_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_semstat *sem_compat, char *errbuf)
{
struct semstat sem;
int r;
r = procstat_get_sem_info(procstat, fst, &sem, errbuf);
if (r != 0)
return (r);
sem_compat->value = sem.value;
sem_compat->mode = sem.mode;
return (0);
}
int
freebsd11_procstat_get_shm_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_shmstat *shm_compat, char *errbuf)
{
struct shmstat shm;
int r;
r = procstat_get_shm_info(procstat, fst, &shm, errbuf);
if (r != 0)
return (r);
shm_compat->size = shm.size;
shm_compat->mode = shm.mode;
return (0);
}
int
freebsd11_procstat_get_socket_info(struct procstat *procstat, struct filestat *fst,
struct freebsd11_sockstat *sock_compat, char *errbuf)
{
struct sockstat sock;
int r;
r = procstat_get_socket_info(procstat, fst, &sock, errbuf);
if (r != 0)
return (r);
sock_compat->inp_ppcb = sock.so_pcb;
sock_compat->so_addr = sock.so_addr;
sock_compat->so_pcb = sock.so_pcb;
sock_compat->unp_conn = sock.unp_conn;
sock_compat->dom_family = sock.dom_family;
sock_compat->proto = sock.proto;
sock_compat->so_rcv_sb_state = sock.so_rcv_sb_state;
sock_compat->so_snd_sb_state = sock.so_snd_sb_state;
sock_compat->sa_local = sock.sa_local;
sock_compat->sa_peer = sock.sa_peer;
sock_compat->type = sock.type;
memcpy(sock_compat->dname, sock.dname, sizeof(sock.dname));
return (0);
}
int
freebsd11_procstat_get_vnode_info(struct procstat *procstat,
struct filestat *fst, struct freebsd11_vnstat *vn_compat, char *errbuf)
{
struct vnstat vn;
int r;
r = procstat_get_vnode_info(procstat, fst, &vn, errbuf);
if (r != 0)
return (r);
vn_compat->vn_fileid = vn.vn_fileid;
vn_compat->vn_size = vn.vn_size;
vn_compat->vn_mntdir = vn.vn_mntdir;
vn_compat->vn_dev = vn.vn_dev;
vn_compat->vn_fsid = vn.vn_fsid;
vn_compat->vn_type = vn.vn_type;
vn_compat->vn_mode = vn.vn_mode;
if (strlen(vn.vn_devname) >= sizeof(vn_compat->vn_devname))
strcpy(vn_compat->vn_devname, trunc_name);
else
memcpy(vn_compat->vn_devname, vn.vn_devname,
sizeof(vn_compat->vn_devname));
return (0);
}
int
freebsd12_procstat_get_vnode_info(struct procstat *procstat,
struct filestat *fst, struct freebsd12_vnstat *vn_compat, char *errbuf)
{
struct vnstat vn;
int r;
r = procstat_get_vnode_info(procstat, fst, &vn, errbuf);
if (r != 0)
return (r);
vn_compat->vn_fileid = vn.vn_fileid;
vn_compat->vn_size = vn.vn_size;
vn_compat->vn_mntdir = vn.vn_mntdir;
vn_compat->vn_dev = vn.vn_dev;
vn_compat->vn_fsid = vn.vn_fsid;
vn_compat->vn_type = vn.vn_type;
vn_compat->vn_mode = vn.vn_mode;
if (strlen(vn.vn_devname) >= sizeof(vn_compat->vn_devname))
strcpy(vn_compat->vn_devname, trunc_name);
else
memcpy(vn_compat->vn_devname, vn.vn_devname,
sizeof(vn_compat->vn_devname));
return (0);
}
__sym_compat(procstat_get_pts_info, freebsd11_procstat_get_pts_info, FBSD_1.2);
__sym_compat(procstat_get_socket_info, freebsd11_procstat_get_socket_info,
FBSD_1.2);
__sym_compat(procstat_get_vnode_info, freebsd11_procstat_get_vnode_info,
FBSD_1.2);
__sym_compat(procstat_get_sem_info, freebsd11_procstat_get_sem_info, FBSD_1.3);
__sym_compat(procstat_get_shm_info, freebsd11_procstat_get_shm_info, FBSD_1.3);
__sym_compat(procstat_get_pts_info, freebsd12_procstat_get_pts_info, FBSD_1.5);
__sym_compat(procstat_get_vnode_info, freebsd12_procstat_get_vnode_info,
FBSD_1.5);
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