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      1 /*
      2  * Common definitions for Linux and XFS quota tests.
      3  *
      4  * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com>
      5  * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org>
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef STRACE_TESTS_QUOTACTL_H
     32 #define STRACE_TESTS_QUOTACTL_H
     33 
     34 # include <inttypes.h>
     35 # include <stdarg.h>
     36 # include <stdio.h>
     37 # include "print_fields.h"
     38 
     39 # ifdef HAVE_LINUX_QUOTA_H
     40 /* Broken in CentOS 5: has extern spinlock_t dq_data_lock; declaration */
     41 #  include <linux/quota.h>
     42 # else
     43 #  include <linux/types.h>
     44 /* Broken in some new glibc versions: have Q_GETNEXTQUOTA definition but no
     45  * struct nextdqblk defined. Fixed in glibc-2.24-106-g4d72808. */
     46 #  include <sys/quota.h>
     47 # endif
     48 
     49 # ifndef QCMD_CMD
     50 #  define QCMD_CMD(_val) ((unsigned) (_val) >> SUBCMDSHIFT)
     51 # endif /* !QCMD_CMD */
     52 
     53 # ifndef QCMD_TYPE
     54 #  define QCMD_TYPE(_val) ((unsigned) (_val) & SUBCMDMASK)
     55 # endif /* !QCMD_TYPE */
     56 
     57 # ifndef PRJQUOTA
     58 #  define PRJQUOTA 2
     59 # endif
     60 
     61 typedef void (*print_cb)(long rc, void *addr, void *arg);
     62 
     63 enum check_quotactl_flag_bits {
     64 	CQF_ID_SKIP_BIT,
     65 	CQF_ID_STR_BIT,
     66 	CQF_ADDR_SKIP_BIT,
     67 	CQF_ADDR_STR_BIT,
     68 	CQF_ADDR_CB_BIT,
     69 };
     70 
     71 enum check_quotactl_flags {
     72 	CQF_NONE,
     73 	CQF_ID_SKIP   = 1 << CQF_ID_SKIP_BIT,
     74 	CQF_ID_STR    = 1 << CQF_ID_STR_BIT,
     75 	CQF_ADDR_SKIP = 1 << CQF_ADDR_SKIP_BIT,
     76 	CQF_ADDR_STR  = 1 << CQF_ADDR_STR_BIT,
     77 	CQF_ADDR_CB   = 1 << CQF_ADDR_CB_BIT,
     78 };
     79 
     80 
     81 static inline void
     82 check_quota(uint32_t flags, int cmd, const char *cmd_str,
     83 	const char *special, const char *special_str, ...)
     84 {
     85 	long rc;
     86 	const char *addr_str = NULL;
     87 	const char *id_str = NULL;
     88 	void *addr = NULL;
     89 	print_cb addr_cb = NULL;
     90 	void *addr_cb_arg = NULL;
     91 	uint32_t id = -1;
     92 
     93 	va_list ap;
     94 
     95 	va_start(ap, special_str);
     96 
     97 	if (!(flags & CQF_ID_SKIP)) {
     98 		id = va_arg(ap, uint32_t);
     99 
    100 		if (flags & CQF_ID_STR)
    101 			id_str = va_arg(ap, const char *);
    102 	}
    103 
    104 	if (!(flags & CQF_ADDR_SKIP)) {
    105 		addr = va_arg(ap, void *);
    106 
    107 		if (flags & CQF_ADDR_CB) {
    108 			addr_cb = va_arg(ap, print_cb);
    109 			addr_cb_arg = va_arg(ap, void *);
    110 		} else if (flags & CQF_ADDR_STR) {
    111 			addr_str = va_arg(ap, const char *);
    112 		}
    113 	}
    114 
    115 	va_end(ap);
    116 
    117 	rc = syscall(__NR_quotactl, cmd, special, id, addr);
    118 	printf("quotactl(%s, %s", cmd_str, special_str);
    119 
    120 	if (!(flags & CQF_ID_SKIP)) {
    121 		if (flags & CQF_ID_STR) {
    122 			printf(", %s", id_str);
    123 		} else {
    124 			if (id == (uint32_t)-1)
    125 				printf(", -1");
    126 			else
    127 				printf(", %u", id);
    128 		}
    129 	}
    130 
    131 	if (!(flags & CQF_ADDR_SKIP)) {
    132 		if (flags & CQF_ADDR_CB) {
    133 			printf(", ");
    134 			addr_cb(rc, addr, addr_cb_arg);
    135 		} else if (flags & CQF_ADDR_STR) {
    136 			printf(", %s", addr_str);
    137 		} else {
    138 			printf(", %p", addr);
    139 		}
    140 	}
    141 
    142 	printf(") = %s\n", sprintrc(rc));
    143 }
    144 
    145 
    146 static const int bogus_cmd = 0xbadc0ded;
    147 static const int bogus_id = 0xca7faced;
    148 
    149 /* It is invalid anyway due to the slash in the end */
    150 static const char *bogus_dev = "/dev/bogus/";
    151 static const char *bogus_dev_str = "\"/dev/bogus/\"";
    152 
    153 static const char unterminated_data[] = { '\1', '\2', '\3' };
    154 
    155 #endif /* !STRACE_TESTS_QUOTACTL_H */
    156