/* Fill in the fields of FSP with information about space usage for
the file system on which FILE resides.
DISK is the device on which FILE is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. When returning -1, ensure that
ERRNO is either a system error value, or zero if DISK is NULL
on a system that requires a non-NULL value. */
int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp) {
struct statvfs fsd;
if (statvfs (file, &fsd) < 0)
return -1;
/* f_frsize isn't guaranteed to be supported. */
fsp->fsu_blocksize = (fsd.f_frsize
? PROPAGATE_ALL_ONES (fsd.f_frsize)
: PROPAGATE_ALL_ONES (fsd.f_bsize));
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
return 0;
}
/* Fill in the fields of FSP with information about space usage for
the filesystem on which PATH resides.
DISK is the device on which PATH is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. When returning -1, ensure that
ERRNO is either a system error value, or zero if DISK is NULL
on a system that requires a non-NULL value. */
int
get_fs_usage (const char *path, const char *disk, struct fs_usage *fsp)
{
#ifdef STAT_STATFS3_OSF1
struct statfs fsd;
if (statfs (path, &fsd, sizeof (struct statfs)) != 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#endif /* STAT_STATFS3_OSF1 */
#ifdef STAT_STATFS2_FS_DATA /* Ultrix */
struct fs_data fsd;
if (statfs (path, &fsd) != 1)
return -1;
fsp->fsu_blocksize = 1024;
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
#endif /* STAT_STATFS2_FS_DATA */
#ifdef STAT_READ_FILSYS /* SVR2 */
# ifndef SUPERBOFF
# define SUPERBOFF (SUPERB * 512)
# endif
struct filsys fsd;
int fd;
if (! disk)
{
errno = 0;
return -1;
}
fd = open (disk, O_RDONLY);
if (fd < 0)
return -1;
lseek (fd, (off_t) SUPERBOFF, 0);
if (safe_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
{
close (fd);
return -1;
}
close (fd);
fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
fsp->fsu_files = (fsd.s_isize == -1
? (uintmax_t) -1
: (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
#endif /* STAT_READ_FILSYS */
#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX */
struct statfs fsd;
if (statfs (path, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# ifdef STATFS_TRUNCATES_BLOCK_COUNTS
/* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the
struct statfs are truncated to 2GB. These conditions detect that
truncation, presumably without botching the 4.1.1 case, in which
the values are not truncated. The correct counts are stored in
undocumented spare fields. */
if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0)
{
fsd.f_blocks = fsd.f_spare[0];
fsd.f_bfree = fsd.f_spare[1];
fsd.f_bavail = fsd.f_spare[2];
}
# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
#endif /* STAT_STATFS2_BSIZE */
#ifdef STAT_STATFS2_FSIZE /* 4.4BSD */
struct statfs fsd;
if (statfs (path, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#endif /* STAT_STATFS2_FSIZE */
#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX */
# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
# define f_bavail f_bfree
# endif
struct statfs fsd;
if (statfs (path, &fsd, sizeof fsd, 0) < 0)
return -1;
/* Empirically, the block counts on most SVR3 and SVR3-derived
systems seem to always be in terms of 512-byte blocks,
no matter what value f_bsize has. */
# if _AIX || defined(_CRAY)
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# else
fsp->fsu_blocksize = 512;
# endif
#endif /* STAT_STATFS4 */
#ifdef STAT_STATVFS /* SVR4 */
struct statvfs fsd;
if (statvfs (path, &fsd) < 0)
return -1;
/* f_frsize isn't guaranteed to be supported. */
fsp->fsu_blocksize =
PROPAGATE_ALL_ONES (fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize);
#endif /* STAT_STATVFS */
#if !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS)
/* !Ultrix && !SVR2 */
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
#endif /* not STAT_STATFS2_FS_DATA && not STAT_READ_FILSYS */
return 0;
}
/* Fill in the fields of FSP with information about space usage for
the file system on which FILE resides.
DISK is the device on which FILE is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. When returning -1, ensure that
ERRNO is either a system error value, or zero if DISK is NULL
on a system that requires a non-NULL value. */
int
get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
{
#ifdef STAT_STATVFS /* POSIX, except pre-2.6.36 glibc/Linux */
if (statvfs_works ())
{
struct statvfs vfsd;
if (statvfs (file, &vfsd) < 0)
return -1;
/* f_frsize isn't guaranteed to be supported. */
fsp->fsu_blocksize = (vfsd.f_frsize
? PROPAGATE_ALL_ONES (vfsd.f_frsize)
: PROPAGATE_ALL_ONES (vfsd.f_bsize));
fsp->fsu_blocks = PROPAGATE_ALL_ONES (vfsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (vfsd.f_bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (vfsd.f_bavail);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (vfsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (vfsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (vfsd.f_ffree);
return 0;
}
#endif
#if defined STAT_STATVFS64 /* AIX */
struct statvfs64 fsd;
if (statvfs64 (file, &fsd) < 0)
return -1;
/* f_frsize isn't guaranteed to be supported. */
fsp->fsu_blocksize = (fsd.f_frsize
? PROPAGATE_ALL_ONES (fsd.f_frsize)
: PROPAGATE_ALL_ONES (fsd.f_bsize));
#elif defined STAT_STATFS2_FS_DATA /* Ultrix */
struct fs_data fsd;
if (statfs (file, &fsd) != 1)
return -1;
fsp->fsu_blocksize = 1024;
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
#elif defined STAT_READ_FILSYS /* SVR2 */
# ifndef SUPERBOFF
# define SUPERBOFF (SUPERB * 512)
# endif
struct filsys fsd;
int fd;
if (! disk)
{
errno = 0;
return -1;
}
fd = open (disk, O_RDONLY);
if (fd < 0)
return -1;
lseek (fd, (off_t) SUPERBOFF, 0);
if (full_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
{
close (fd);
return -1;
}
close (fd);
fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
fsp->fsu_files = (fsd.s_isize == -1
? UINTMAX_MAX
: (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
#elif defined STAT_STATFS3_OSF1 /* OSF/1 */
struct statfs fsd;
if (statfs (file, &fsd, sizeof (struct statfs)) != 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#elif defined STAT_STATFS2_FRSIZE /* 2.6 < glibc/Linux < 2.6.36 */
struct statfs fsd;
if (statfs (file, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_frsize);
#elif defined STAT_STATFS2_BSIZE /* glibc/Linux < 2.6, 4.3BSD, SunOS 4, \
Mac OS X < 10.4, FreeBSD < 5.0, \
NetBSD < 3.0, OpenBSD < 4.4 */
struct statfs fsd;
if (statfs (file, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# ifdef STATFS_TRUNCATES_BLOCK_COUNTS
/* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the
struct statfs are truncated to 2GB. These conditions detect that
truncation, presumably without botching the 4.1.1 case, in which
the values are not truncated. The correct counts are stored in
undocumented spare fields. */
if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0)
{
fsd.f_blocks = fsd.f_spare[0];
fsd.f_bfree = fsd.f_spare[1];
fsd.f_bavail = fsd.f_spare[2];
}
# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
#elif defined STAT_STATFS2_FSIZE /* 4.4BSD and older NetBSD */
struct statfs fsd;
if (statfs (file, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#elif defined STAT_STATFS4 /* SVR3, Dynix, old Irix, old AIX, \
Dolphin */
# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
# define f_bavail f_bfree
# endif
struct statfs fsd;
if (statfs (file, &fsd, sizeof fsd, 0) < 0)
return -1;
/* Empirically, the block counts on most SVR3 and SVR3-derived
systems seem to always be in terms of 512-byte blocks,
no matter what value f_bsize has. */
# if _AIX || defined _CRAY
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# else
fsp->fsu_blocksize = 512;
# endif
#endif
#if (defined STAT_STATVFS64 || defined STAT_STATFS3_OSF1 \
|| defined STAT_STATFS2_FRSIZE || defined STAT_STATFS2_BSIZE \
|| defined STAT_STATFS2_FSIZE || defined STAT_STATFS4)
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
#endif
(void) disk; /* avoid argument-unused warning */
return 0;
}
