129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2016-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/types.h>
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#include <asm/statfs.h>
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#include "xlat.h"
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#include "xlat/fsmagic.h"
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#include "xlat/statfs_flags.h"
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#define PRINT_NUM(arg) \
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do { \
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if (sizeof(b->arg) == sizeof(int)) \
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printf(", %s=%u", #arg, \
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(unsigned int) b->arg); \
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else if (sizeof(b->arg) == sizeof(long)) \
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printf(", %s=%lu", #arg, \
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(unsigned long) b->arg); \
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else \
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printf(", %s=%llu", #arg, \
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(unsigned long long) b->arg); \
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} while (0)
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static void
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print_statfs_type(const char *const prefix, const unsigned int magic)
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{
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fputs(prefix, stdout);
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(fsmagic); ++i)
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if (magic == fsmagic[i].val) {
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fputs(fsmagic[i].str, stdout);
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return;
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}
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printf("%#x", magic);
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}
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static void
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print_statfs(const char *const sample, const char *magic_str)
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{
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int fd = open(sample, O_RDONLY);
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if (fd < 0)
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perror_msg_and_skip("open: %s", sample);
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TAIL_ALLOC_OBJECT_CONST_PTR(STRUCT_STATFS, b);
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long rc = SYSCALL_INVOKE(sample, fd, b, sizeof(*b));
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if (rc)
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perror_msg_and_skip(SYSCALL_NAME);
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PRINT_SYSCALL_HEADER(sample, fd, sizeof(*b));
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if (magic_str)
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printf("{f_type=%s", magic_str);
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else
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print_statfs_type("{f_type=", b->f_type);
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PRINT_NUM(f_bsize);
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PRINT_NUM(f_blocks);
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PRINT_NUM(f_bfree);
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PRINT_NUM(f_bavail);
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PRINT_NUM(f_files);
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PRINT_NUM(f_ffree);
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#ifdef PRINT_F_FSID
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printf(", f_fsid={val=[%u, %u]}",
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(unsigned) b->PRINT_F_FSID[0], (unsigned) b->PRINT_F_FSID[1]);
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#endif
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PRINT_NUM(f_namelen);
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#ifdef PRINT_F_FRSIZE
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PRINT_NUM(f_frsize);
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#endif
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#ifdef PRINT_F_FLAGS
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if (b->f_flags & ST_VALID) {
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printf(", f_flags=");
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printflags(statfs_flags, b->f_flags, "ST_???");
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}
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#endif
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printf("}) = 0\n");
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}
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int
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main(void)
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{
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print_statfs("/proc/self/status", "PROC_SUPER_MAGIC");
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print_statfs(".", NULL);
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long rc = SYSCALL_INVOKE("", -1, 0, sizeof(STRUCT_STATFS));
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const char *errstr = sprintrc(rc);
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PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS));
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printf("NULL) = %s\n", errstr);
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#ifdef CHECK_ODD_SIZE
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const unsigned long addr = (unsigned long) 0xfacefeeddeadbeefULL;
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rc = SYSCALL_INVOKE("", -1, addr, sizeof(STRUCT_STATFS) + 1);
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errstr = sprintrc(rc);
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PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS) + 1);
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printf("%#lx) = %s\n", addr, errstr);
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#endif
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puts("+++ exited with 0 +++");
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return 0;
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}
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