granicus.if.org Git - strace/blob - tests/xstatfsx.c

   1 /*
   2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2016-2017 The strace developers.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <stdio.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32
  33 #include <linux/types.h>
  34 #include <asm/statfs.h>
  35
  36 #include "xlat.h"
  37 #include "xlat/fsmagic.h"
  38 #include "xlat/statfs_flags.h"
  39
  40 #define PRINT_NUM(arg)                                                  \
  41         do {                                                            \
  42                 if (sizeof(b->arg) == sizeof(int))                      \
  43                         printf(", %s=%u", #arg,                         \
  44                                (unsigned int) b->arg);                  \
  45                 else if (sizeof(b->arg) == sizeof(long))                \
  46                         printf(", %s=%lu", #arg,                        \
  47                                (unsigned long) b->arg);                 \
  48                 else                                                    \
  49                         printf(", %s=%llu", #arg,                       \
  50                                (unsigned long long) b->arg);            \
  51         } while (0)
  52
  53 static void
  54 print_statfs_type(const char *const prefix, const unsigned int magic)
  55 {
  56         fputs(prefix, stdout);
  57         unsigned int i;
  58         for (i = 0; i < ARRAY_SIZE(fsmagic); ++i)
  59                 if (magic == fsmagic[i].val) {
  60                         fputs(fsmagic[i].str, stdout);
  61                         return;
  62                 }
  63         printf("%#x", magic);
  64 }
  65
  66 static void
  67 print_statfs(const char *const sample, const char *magic_str)
  68 {
  69         int fd = open(sample, O_RDONLY);
  70         if (fd < 0)
  71                 perror_msg_and_skip("open: %s", sample);
  72
  73         TAIL_ALLOC_OBJECT_CONST_PTR(STRUCT_STATFS, b);
  74         long rc = SYSCALL_INVOKE(sample, fd, b, sizeof(*b));
  75         if (rc)
  76                 perror_msg_and_skip(SYSCALL_NAME);
  77
  78         PRINT_SYSCALL_HEADER(sample, fd, sizeof(*b));
  79         if (magic_str)
  80                 printf("{f_type=%s", magic_str);
  81         else
  82                 print_statfs_type("{f_type=", b->f_type);
  83         PRINT_NUM(f_bsize);
  84         PRINT_NUM(f_blocks);
  85         PRINT_NUM(f_bfree);
  86         PRINT_NUM(f_bavail);
  87         PRINT_NUM(f_files);
  88         PRINT_NUM(f_ffree);
  89 #ifdef PRINT_F_FSID
  90         printf(", f_fsid={val=[%u, %u]}",
  91                (unsigned) b->PRINT_F_FSID[0], (unsigned) b->PRINT_F_FSID[1]);
  92 #endif
  93         PRINT_NUM(f_namelen);
  94 #ifdef PRINT_F_FRSIZE
  95         PRINT_NUM(f_frsize);
  96 #endif
  97 #ifdef PRINT_F_FLAGS
  98         if (b->f_flags & ST_VALID) {
  99                 printf(", f_flags=");
 100                 printflags(statfs_flags, b->f_flags, "ST_???");
 101         }
 102 #endif
 103         printf("}) = 0\n");
 104 }
 105
 106 int
 107 main(void)
 108 {
 109         print_statfs("/proc/self/status", "PROC_SUPER_MAGIC");
 110
 111         print_statfs(".", NULL);
 112
 113         long rc = SYSCALL_INVOKE("", -1, 0, sizeof(STRUCT_STATFS));
 114         const char *errstr = sprintrc(rc);
 115         PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS));
 116         printf("NULL) = %s\n", errstr);
 117
 118 #ifdef CHECK_ODD_SIZE
 119         const unsigned long addr = (unsigned long) 0xfacefeeddeadbeefULL;
 120         rc = SYSCALL_INVOKE("", -1, addr, sizeof(STRUCT_STATFS) + 1);
 121         errstr = sprintrc(rc);
 122         PRINT_SYSCALL_HEADER("", -1, sizeof(STRUCT_STATFS) + 1);
 123         printf("%#lx) = %s\n", addr, errstr);
 124 #endif
 125
 126         puts("+++ exited with 0 +++");
 127         return 0;
 128 }