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/*
* Copyright (c) 2015-2016 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 <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/types.h>
#include <asm/statfs.h>
#include "xlat.h"
#include "xlat/fsmagic.h"
#include "xlat/statfs_flags.h"
#define PRINT_NUM(arg) \
if (sizeof(b->arg) == sizeof(int)) \
printf(", %s=%u", #arg, (unsigned int) b->arg); \
else if (sizeof(b->arg) == sizeof(long)) \
printf(", %s=%lu", #arg, (unsigned long) b->arg); \
else \
printf(", %s=%llu", #arg, (unsigned long long) b->arg)
static void
print_statfs_type(const char *const prefix, const unsigned int magic)
{
fputs(prefix, stdout);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(fsmagic); ++i)
if (magic == fsmagic[i].val) {
fputs(fsmagic[i].str, stdout);
return;
}
printf("%#x", magic);
}
static void
print_statfs(const char *const sample, const char *magic_str)
{
int fd = open(sample, O_RDONLY);
if (fd < 0)
perror_msg_and_fail("open: %s", sample);
STRUCT_STATFS *const b = tail_alloc(sizeof(*b));
long rc = SYSCALL_INVOKE(sample, fd, b, sizeof(*b));
if (rc)
perror_msg_and_skip(SYSCALL_NAME);
PRINT_SYSCALL_HEADER(sample, fd, sizeof(*b));
if (magic_str)
printf("{f_type=%s", magic_str);
else
print_statfs_type("{f_type=", b->f_type);
PRINT_NUM(f_bsize);
PRINT_NUM(f_blocks);
PRINT_NUM(f_bfree);
PRINT_NUM(f_bavail);
PRINT_NUM(f_files);
PRINT_NUM(f_ffree);
#ifdef PRINT_F_FSID
printf(", f_fsid={%u, %u}", b->PRINT_F_FSID[0], b->PRINT_F_FSID[1]);
#endif
PRINT_NUM(f_namelen);
#ifdef PRINT_F_FRSIZE
PRINT_NUM(f_frsize);
#endif
#ifdef PRINT_F_FLAGS
if (b->f_flags & ST_VALID) {
printf(", f_flags=");
printflags(statfs_flags, b->f_flags, "ST_???");
}
#endif
printf("}) = 0\n");
}
int
main(void)
{
print_statfs("/proc/self/status", "PROC_SUPER_MAGIC");
print_statfs(".", NULL);
long rc = SYSCALL_INVOKE("", -1, 0, sizeof(STRUCT_STATFS));
PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS));
printf("NULL) = %ld %s (%m)\n", rc, errno2name());
#ifdef CHECK_ODD_SIZE
const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef;
rc = SYSCALL_INVOKE("", -1, addr, sizeof(STRUCT_STATFS) + 1);
PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS) + 1);
printf("%#lx) = %ld %s (%m)\n", addr, rc, errno2name());
#endif
puts("+++ exited with 0 +++");
return 0;
}
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