strace/statfs.c
Dmitry V. Levin f3ac12990d statfs: print f_flags field only when ST_VALID flag is set
* statfs.c (print_statfs_flags): New function.
(printstatfs, printstatfs64, printcompat_statfs64): Use it.
* xlat/statfs_flags.in (ST_VALID): Move to the head of the list.
* tests/statfs.expected: Update.
2016-04-25 10:30:03 +00:00

245 lines
6.7 KiB
C

/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2003 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2012 Andreas Schwab <schwab@linux-m68k.org>
* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.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.
* 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"
#ifdef HAVE_SYS_VFS_H
# include <sys/vfs.h>
#endif
#include "xlat/fsmagic.h"
#include "xlat/statfs_flags.h"
static const char *
sprintfstype(const unsigned int magic)
{
static char buf[32];
const char *s;
s = xlat_search(fsmagic, ARRAY_SIZE(fsmagic), magic);
if (s)
return s;
sprintf(buf, "%#x", magic);
return buf;
}
static void
print_statfs_flags(const char *const prefix, const unsigned int flags)
{
if (flags & ST_VALID) {
tprints(prefix);
printflags(statfs_flags, flags, "ST_???");
}
}
static void
printstatfs(struct tcb *tcp, const long addr)
{
struct statfs statbuf;
if (umove_or_printaddr(tcp, addr, &statbuf))
return;
tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%lu, f_bfree=%lu, ",
sprintfstype(statbuf.f_type),
(unsigned long)statbuf.f_bsize,
(unsigned long)statbuf.f_blocks,
(unsigned long)statbuf.f_bfree);
tprintf("f_bavail=%lu, f_files=%lu, f_ffree=%lu, f_fsid={%d, %d}",
(unsigned long)statbuf.f_bavail,
(unsigned long)statbuf.f_files,
(unsigned long)statbuf.f_ffree,
statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
#ifdef _STATFS_F_FRSIZE
tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
#endif
#ifdef _STATFS_F_FLAGS
print_statfs_flags(", f_flags=", statbuf.f_flags);
#endif
tprints("}");
}
SYS_FUNC(statfs)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
printstatfs(tcp, tcp->u_arg[1]);
}
return 0;
}
SYS_FUNC(fstatfs)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
printstatfs(tcp, tcp->u_arg[1]);
}
return 0;
}
#ifdef HAVE_STRUCT_STATFS64
static void
printstatfs64(struct tcb *tcp, long addr)
{
struct statfs64 statbuf;
if (umove_or_printaddr(tcp, addr, &statbuf))
return;
tprintf("{f_type=%s, f_bsize=%llu, f_blocks=%llu, f_bfree=%llu, ",
sprintfstype(statbuf.f_type),
(unsigned long long)statbuf.f_bsize,
(unsigned long long)statbuf.f_blocks,
(unsigned long long)statbuf.f_bfree);
tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
(unsigned long long)statbuf.f_bavail,
(unsigned long long)statbuf.f_files,
(unsigned long long)statbuf.f_ffree,
statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
#ifdef _STATFS_F_FRSIZE
tprintf(", f_frsize=%llu", (unsigned long long)statbuf.f_frsize);
#endif
#ifdef _STATFS_F_FLAGS
print_statfs_flags(", f_flags=", statbuf.f_flags);
#endif
tprints("}");
}
struct compat_statfs64 {
uint32_t f_type;
uint32_t f_bsize;
uint64_t f_blocks;
uint64_t f_bfree;
uint64_t f_bavail;
uint64_t f_files;
uint64_t f_ffree;
fsid_t f_fsid;
uint32_t f_namelen;
uint32_t f_frsize;
uint32_t f_flags;
uint32_t f_spare[4];
}
#if defined AARCH64 || defined X86_64 || defined X32 || defined IA64
ATTRIBUTE_PACKED ATTRIBUTE_ALIGNED(4)
#endif
;
#if defined AARCH64 || defined ARM
/* See arch/arm/kernel/sys_oabi-compat.c for details. */
# define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct compat_statfs64) + 4)
#endif
static void
printcompat_statfs64(struct tcb *tcp, const long addr)
{
struct compat_statfs64 statbuf;
if (umove_or_printaddr(tcp, addr, &statbuf))
return;
tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%llu, f_bfree=%llu, ",
sprintfstype(statbuf.f_type),
(unsigned long)statbuf.f_bsize,
(unsigned long long)statbuf.f_blocks,
(unsigned long long)statbuf.f_bfree);
tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
(unsigned long long)statbuf.f_bavail,
(unsigned long long)statbuf.f_files,
(unsigned long long)statbuf.f_ffree,
statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
print_statfs_flags(", f_flags=", statbuf.f_flags);
tprints("}");
}
static int
do_statfs64_fstatfs64(struct tcb *tcp)
{
if (entering(tcp)) {
tprintf(", %lu, ", tcp->u_arg[1]);
} else {
if (tcp->u_arg[1] == sizeof(struct statfs64))
printstatfs64(tcp, tcp->u_arg[2]);
else if (tcp->u_arg[1] == sizeof(struct compat_statfs64)
#ifdef COMPAT_STATFS64_PADDED_SIZE
|| tcp->u_arg[1] == COMPAT_STATFS64_PADDED_SIZE
#endif
)
printcompat_statfs64(tcp, tcp->u_arg[2]);
else
tprints("{???}");
}
return 0;
}
SYS_FUNC(statfs64)
{
if (entering(tcp))
printpath(tcp, tcp->u_arg[0]);
return do_statfs64_fstatfs64(tcp);
}
SYS_FUNC(fstatfs64)
{
if (entering(tcp))
printfd(tcp, tcp->u_arg[0]);
return do_statfs64_fstatfs64(tcp);
}
#endif /* HAVE_STRUCT_STATFS64 */
#ifdef ALPHA
SYS_FUNC(osf_statfs)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
printstatfs(tcp, tcp->u_arg[1]);
tprintf(", %lu", tcp->u_arg[2]);
}
return 0;
}
SYS_FUNC(osf_fstatfs)
{
if (entering(tcp)) {
tprintf("%lu, ", tcp->u_arg[0]);
} else {
printstatfs(tcp, tcp->u_arg[1]);
tprintf(", %lu", tcp->u_arg[2]);
}
return 0;
}
#endif /* ALPHA */