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strace/quota.c
Dmitry V. Levin 0b03de74bc build: prepare for -Wimplicit-fallthrough=5 
* gcc_compat.h (ATTRIBUTE_FALLTHROUGH): New macro.
* block.c (block_ioctl): Use it instead of "fall through" comment.
* btrfs.c (btrfs_ioctl): Likewise.
* loop.c (loop_ioctl): Likewise.
* mtd.c (mtd_ioctl): Likewise.
* rtc.c (rtc_ioctl): Likewise.
* v4l2.c (v4l2_ioctl): Likewise.
* dm.c (dm_decode_values): Likewise.
* process.c (SYS_FUNC(ptrace)): Likewise.
* quota.c (decode_cmd_data): Likewise.
* ucopy.c (umovestr): Likewise.
* unwind.c (unwind_print_stacktrace, unwind_capture_stacktrace)):
Likewise.
* term.c (term_ioctl): Add ATTRIBUTE_FALLTHROUGH.
* ioctl.c (ioctl_decode) [ALPHA || POWERPC]: Likewise.
* m4/st_warn_cflags.m4 (gl_WARN_ADD): Add -Wimplicit-fallthrough=5.
* tests/ioctl_v4l2.c (init_v4l2_format): Reorganize the switch statement
without implicit fallthrough.
2018-03-06 23:52:08 +00:00

460 lines
13 KiB
C
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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2006-2017 The strace developers.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "defs.h"
#include "print_fields.h"
#define SUBCMDMASK 0x00ff
#define SUBCMDSHIFT 8
#define QCMD_CMD(cmd) ((uint32_t)(cmd) >> SUBCMDSHIFT)
#define QCMD_TYPE(cmd) ((uint32_t)(cmd) & SUBCMDMASK)
#define OLD_CMD(cmd) ((uint32_t)(cmd) << SUBCMDSHIFT)
#define NEW_CMD(cmd) ((uint32_t)(cmd) | 0x800000)
#define XQM_CMD(cmd) ((uint32_t)(cmd) | ('X' << SUBCMDSHIFT))
#include "xlat/quotacmds.h"
#include "xlat/quotatypes.h"
#include "xlat/quota_formats.h"
#include "xlat/xfs_quota_flags.h"
#include "xlat/xfs_dqblk_flags.h"
#include "xlat/if_dqblk_valid.h"
#include "xlat/if_dqinfo_flags.h"
#include "xlat/if_dqinfo_valid.h"
/*
* We add attribute packed due to the fact that the structure is 8-byte aligned
* on 64-bit systems and therefore has additional 4 bytes of padding, which
* leads to problems when it is used on 32-bit tracee which does not have such
* padding.
*/
struct if_dqblk {
uint64_t dqb_bhardlimit;
uint64_t dqb_bsoftlimit;
uint64_t dqb_curspace;
uint64_t dqb_ihardlimit;
uint64_t dqb_isoftlimit;
uint64_t dqb_curinodes;
uint64_t dqb_btime;
uint64_t dqb_itime;
uint32_t dqb_valid;
} ATTRIBUTE_PACKED;
struct if_nextdqblk {
uint64_t dqb_bhardlimit;
uint64_t dqb_bsoftlimit;
uint64_t dqb_curspace;
uint64_t dqb_ihardlimit;
uint64_t dqb_isoftlimit;
uint64_t dqb_curinodes;
uint64_t dqb_btime;
uint64_t dqb_itime;
uint32_t dqb_valid;
uint32_t dqb_id;
};
struct xfs_dqblk {
int8_t d_version; /* version of this structure */
uint8_t d_flags; /* XFS_{USER,PROJ,GROUP}_QUOTA */
uint16_t d_fieldmask; /* field specifier */
uint32_t d_id; /* user, project, or group ID */
uint64_t d_blk_hardlimit; /* absolute limit on disk blks */
uint64_t d_blk_softlimit; /* preferred limit on disk blks */
uint64_t d_ino_hardlimit; /* maximum # allocated inodes */
uint64_t d_ino_softlimit; /* preferred inode limit */
uint64_t d_bcount; /* # disk blocks owned by the user */
uint64_t d_icount; /* # inodes owned by the user */
int32_t d_itimer; /* zero if within inode limits */
int32_t d_btimer; /* similar to above; for disk blocks */
uint16_t d_iwarns; /* # warnings issued wrt num inodes */
uint16_t d_bwarns; /* # warnings issued wrt disk blocks */
int32_t d_padding2; /* padding2 - for future use */
uint64_t d_rtb_hardlimit; /* absolute limit on realtime blks */
uint64_t d_rtb_softlimit; /* preferred limit on RT disk blks */
uint64_t d_rtbcount; /* # realtime blocks owned */
int32_t d_rtbtimer; /* similar to above; for RT disk blks */
uint16_t d_rtbwarns; /* # warnings issued wrt RT disk blks */
int16_t d_padding3; /* padding3 - for future use */
char d_padding4[8]; /* yet more padding */
};
struct if_dqinfo {
uint64_t dqi_bgrace;
uint64_t dqi_igrace;
uint32_t dqi_flags;
uint32_t dqi_valid;
};
typedef struct fs_qfilestat {
uint64_t qfs_ino; /* inode number */
uint64_t qfs_nblks; /* number of BBs 512-byte-blks */
uint32_t qfs_nextents; /* number of extents */
} fs_qfilestat_t;
struct xfs_dqstats {
int8_t qs_version; /* version number for future changes */
uint16_t qs_flags; /* XFS_QUOTA_{U,P,G}DQ_{ACCT,ENFD} */
int8_t qs_pad; /* unused */
fs_qfilestat_t qs_uquota; /* user quota storage information */
fs_qfilestat_t qs_gquota; /* group quota storage information */
uint32_t qs_incoredqs; /* number of dquots incore */
int32_t qs_btimelimit; /* limit for blks timer */
int32_t qs_itimelimit; /* limit for inodes timer */
int32_t qs_rtbtimelimit; /* limit for rt blks timer */
uint16_t qs_bwarnlimit; /* limit for num warnings */
uint16_t qs_iwarnlimit; /* limit for num warnings */
};
struct fs_qfilestatv {
uint64_t qfs_ino, qfs_nblks;
uint32_t qfs_nextents, qfs_pad;
};
struct fs_quota_statv {
int8_t qs_version;
uint8_t qs_pad1;
uint16_t qs_flags;
uint32_t qs_incoredqs;
struct fs_qfilestatv qs_uquota;
struct fs_qfilestatv qs_gquota;
struct fs_qfilestatv qs_pquota;
int32_t qs_btimelimit;
int32_t qs_itimelimit;
int32_t qs_rtbtimelimit;
uint16_t qs_bwarnlimit;
uint16_t qs_iwarnlimit;
uint64_t qs_pad2[8];
};
static int
decode_cmd_data(struct tcb *tcp, uint32_t id, uint32_t cmd, kernel_ulong_t data)
{
switch (cmd) {
case Q_QUOTAOFF:
case Q_SYNC:
case Q_XQUOTASYNC:
break;
case Q_QUOTAON:
tprints(", ");
printxval(quota_formats, id, "QFMT_VFS_???");
tprints(", ");
printpath(tcp, data);
break;
case Q_GETQUOTA:
if (entering(tcp)) {
printuid(", ", id);
tprints(", ");
return 0;
}
ATTRIBUTE_FALLTHROUGH;
case Q_SETQUOTA:
{
struct if_dqblk dq;
if (entering(tcp)) {
printuid(", ", id);
tprints(", ");
}
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_U("{", dq, dqb_bhardlimit);
PRINT_FIELD_U(", ", dq, dqb_bsoftlimit);
PRINT_FIELD_U(", ", dq, dqb_curspace);
PRINT_FIELD_U(", ", dq, dqb_ihardlimit);
PRINT_FIELD_U(", ", dq, dqb_isoftlimit);
PRINT_FIELD_U(", ", dq, dqb_curinodes);
if (!abbrev(tcp)) {
PRINT_FIELD_U(", ", dq, dqb_btime);
PRINT_FIELD_U(", ", dq, dqb_itime);
PRINT_FIELD_FLAGS(", ", dq, dqb_valid,
if_dqblk_valid, "QIF_???");
} else {
tprints(", ...");
}
tprints("}");
break;
}
case Q_GETNEXTQUOTA:
{
struct if_nextdqblk dq;
if (entering(tcp)) {
printuid(", ", id);
tprints(", ");
return 0;
}
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_U("{", dq, dqb_bhardlimit);
PRINT_FIELD_U(", ", dq, dqb_bsoftlimit);
PRINT_FIELD_U(", ", dq, dqb_curspace);
PRINT_FIELD_U(", ", dq, dqb_ihardlimit);
PRINT_FIELD_U(", ", dq, dqb_isoftlimit);
PRINT_FIELD_U(", ", dq, dqb_curinodes);
if (!abbrev(tcp)) {
PRINT_FIELD_U(", ", dq, dqb_btime);
PRINT_FIELD_U(", ", dq, dqb_itime);
PRINT_FIELD_FLAGS(", ", dq, dqb_valid,
if_dqblk_valid, "QIF_???");
PRINT_FIELD_U(", ", dq, dqb_id);
} else {
PRINT_FIELD_U(", ", dq, dqb_id);
tprints(", ...");
}
tprints("}");
break;
}
case Q_XGETQUOTA:
case Q_XGETNEXTQUOTA:
if (entering(tcp)) {
printuid(", ", id);
tprints(", ");
return 0;
}
ATTRIBUTE_FALLTHROUGH;
case Q_XSETQLIM:
{
struct xfs_dqblk dq;
if (entering(tcp)) {
printuid(", ", id);
tprints(", ");
}
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_D("{", dq, d_version);
PRINT_FIELD_FLAGS(", ", dq, d_flags,
xfs_dqblk_flags, "XFS_???_QUOTA");
PRINT_FIELD_X(", ", dq, d_fieldmask);
PRINT_FIELD_U(", ", dq, d_id);
PRINT_FIELD_U(", ", dq, d_blk_hardlimit);
PRINT_FIELD_U(", ", dq, d_blk_softlimit);
PRINT_FIELD_U(", ", dq, d_ino_hardlimit);
PRINT_FIELD_U(", ", dq, d_ino_softlimit);
PRINT_FIELD_U(", ", dq, d_bcount);
PRINT_FIELD_U(", ", dq, d_icount);
if (!abbrev(tcp)) {
PRINT_FIELD_D(", ", dq, d_itimer);
PRINT_FIELD_D(", ", dq, d_btimer);
PRINT_FIELD_U(", ", dq, d_iwarns);
PRINT_FIELD_U(", ", dq, d_bwarns);
PRINT_FIELD_U(", ", dq, d_rtb_hardlimit);
PRINT_FIELD_U(", ", dq, d_rtb_softlimit);
PRINT_FIELD_U(", ", dq, d_rtbcount);
PRINT_FIELD_D(", ", dq, d_rtbtimer);
PRINT_FIELD_U(", ", dq, d_rtbwarns);
} else {
tprints(", ...");
}
tprints("}");
break;
}
case Q_GETFMT:
{
uint32_t fmt;
if (entering(tcp)) {
tprints(", ");
return 0;
}
if (umove_or_printaddr(tcp, data, &fmt))
break;
tprints("[");
printxval(quota_formats, fmt, "QFMT_VFS_???");
tprints("]");
break;
}
case Q_GETINFO:
if (entering(tcp)) {
tprints(", ");
return 0;
}
ATTRIBUTE_FALLTHROUGH;
case Q_SETINFO:
{
struct if_dqinfo dq;
if (entering(tcp))
tprints(", ");
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_U("{", dq, dqi_bgrace);
PRINT_FIELD_U(", ", dq, dqi_igrace);
PRINT_FIELD_FLAGS(", ", dq, dqi_flags, if_dqinfo_flags, "DQF_???");
PRINT_FIELD_FLAGS(", ", dq, dqi_valid, if_dqinfo_valid, "IIF_???");
tprints("}");
break;
}
case Q_XGETQSTAT:
{
struct xfs_dqstats dq;
if (entering(tcp)) {
tprints(", ");
return 0;
}
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_D("{", dq, qs_version);
if (!abbrev(tcp)) {
PRINT_FIELD_FLAGS(", ", dq, qs_flags,
xfs_quota_flags, "XFS_QUOTA_???");
PRINT_FIELD_U(", ", dq, qs_incoredqs);
PRINT_FIELD_U(", qs_uquota={", dq.qs_uquota, qfs_ino);
PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nblks);
PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nextents);
PRINT_FIELD_U("}, qs_gquota={", dq.qs_gquota, qfs_ino);
PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nblks);
PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nextents);
PRINT_FIELD_D("}, ", dq, qs_btimelimit);
PRINT_FIELD_D(", ", dq, qs_itimelimit);
PRINT_FIELD_D(", ", dq, qs_rtbtimelimit);
PRINT_FIELD_U(", ", dq, qs_bwarnlimit);
PRINT_FIELD_U(", ", dq, qs_iwarnlimit);
} else {
tprints(", ...");
}
tprints("}");
break;
}
case Q_XGETQSTATV:
{
struct fs_quota_statv dq;
if (entering(tcp)) {
tprints(", ");
return 0;
}
if (umove_or_printaddr(tcp, data, &dq))
break;
PRINT_FIELD_D("{", dq, qs_version);
if (!abbrev(tcp)) {
PRINT_FIELD_FLAGS(", ", dq, qs_flags,
xfs_quota_flags, "XFS_QUOTA_???");
PRINT_FIELD_U(", ", dq, qs_incoredqs);
PRINT_FIELD_U(", qs_uquota={", dq.qs_uquota, qfs_ino);
PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nblks);
PRINT_FIELD_U(", ", dq.qs_uquota, qfs_nextents);
PRINT_FIELD_U("}, qs_gquota={", dq.qs_gquota, qfs_ino);
PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nblks);
PRINT_FIELD_U(", ", dq.qs_gquota, qfs_nextents);
PRINT_FIELD_U("}, qs_pquota={", dq.qs_pquota, qfs_ino);
PRINT_FIELD_U(", ", dq.qs_pquota, qfs_nblks);
PRINT_FIELD_U(", ", dq.qs_pquota, qfs_nextents);
PRINT_FIELD_D("}, ", dq, qs_btimelimit);
PRINT_FIELD_D(", ", dq, qs_itimelimit);
PRINT_FIELD_D(", ", dq, qs_rtbtimelimit);
PRINT_FIELD_U(", ", dq, qs_bwarnlimit);
PRINT_FIELD_U(", ", dq, qs_iwarnlimit);
} else {
tprints(", ...");
}
tprints("}");
break;
}
case Q_XQUOTAON:
case Q_XQUOTAOFF:
{
uint32_t flag;
tprints(", ");
if (umove_or_printaddr(tcp, data, &flag))
break;
tprints("[");
printflags(xfs_quota_flags, flag, "XFS_QUOTA_???");
tprints("]");
break;
}
case Q_XQUOTARM:
{
uint32_t flag;
tprints(", ");
if (umove_or_printaddr(tcp, data, &flag))
break;
tprints("[");
printflags(xfs_dqblk_flags, flag, "XFS_???_QUOTA");
tprints("]");
break;
}
default:
printuid(", ", id);
tprints(", ");
printaddr(data);
break;
}
return RVAL_DECODED;
}
SYS_FUNC(quotactl)
{
/*
* The Linux kernel only looks at the low 32 bits of command and id
* arguments, but on some 64-bit architectures (s390x) this word
* will have been sign-extended when we see it. The high 1 bits
* don't mean anything, so don't confuse the output with them.
*/
uint32_t qcmd = tcp->u_arg[0];
uint32_t cmd = QCMD_CMD(qcmd);
uint32_t type = QCMD_TYPE(qcmd);
uint32_t id = tcp->u_arg[2];
if (entering(tcp)) {
tprints("QCMD(");
printxval(quotacmds, cmd, "Q_???");
tprints(", ");
printxval(quotatypes, type, "???QUOTA");
tprints("), ");
printpath(tcp, tcp->u_arg[1]);
}
return decode_cmd_data(tcp, id, cmd, tcp->u_arg[3]);
}
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