source: vendor/current/tests/sysquotas.c

/* this test should find out what quota api is available on the os */

 int autoconf_quota(void);

#if defined(HAVE_QUOTACTL_4A)
/* long quotactl(int cmd, char *special, qid_t id, caddr_t addr) */

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif

#if defined(HAVE_LINUX_QUOTA_H)
# include <linux/quota.h>
# if defined(HAVE_STRUCT_IF_DQBLK)
#  define SYS_DQBLK if_dqblk
# elif defined(HAVE_STRUCT_MEM_DQBLK)
#  define SYS_DQBLK mem_dqblk
# endif
#elif defined(HAVE_SYS_QUOTA_H)
# include <sys/quota.h>
#endif

#ifdef HPUX
/* HPUX has no prototype for quotactl but we test compile with strict
   error checks, which would fail without function prototype */
extern int quotactl(int cmd, const char *special, uid_t uid, void *addr);
#endif

#ifndef SYS_DQBLK
#define SYS_DQBLK dqblk
#endif

 int autoconf_quota(void);

 int autoconf_quota(void)
{
        int ret = -1;
        struct SYS_DQBLK D;

        ret = quotactl(Q_GETQUOTA,"/dev/hda1",0,(void *)&D);

        return ret;
}

#elif defined(HAVE_QUOTACTL_4B)
/* int quotactl(const char *path, int cmd, int id, char *addr); */

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#ifdef HAVE_SYS_QUOTA_H
#include <sys/quota.h>
#else /* *BSD */
#include <sys/types.h>
#ifdef HAVE_UFS_UFS_QUOTA_H
#include <ufs/ufs/quota.h>
#endif
#include <machine/param.h>
#endif

 int autoconf_quota(void)
{
        int ret = -1;
        struct dqblk D;

        ret = quotactl("/",Q_GETQUOTA,0,(char *) &D);

        return ret;
}

#elif defined(HAVE_QUOTACTL_2)

#error HAVE_QUOTACTL_2 not implemented

#else

#error Unknow QUOTACTL prototype

#endif

 int main(void)
{
        autoconf_quota();
        return 0;
}