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freebsd-dev/lib/libprocstat/libprocstat_compat.c
Konstantin Belousov e5ac304989 Bump SPECNAMELEN to MAXNAMLEN. 
This includes the bump for cdevsw d_version.  Otherwise, the impact on
the ABI (not KBI) is surprisingly low.  The most important affected
interface is devname(3) and ttyname(3) which already correctly handle
long names (and ttyname(3) should not be affected at all).

Still, due to the d_version bump, I argue that the change is not MFC-able.

Requested by:	mmacy
Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D18932
2019-01-27 00:46:06 +00:00

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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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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.inp_ppcb;
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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