[PATCH] statfs.2: Update + Note for pipe() fds

[Cyril Hrubis <chrubis-AlSwsSmVLrQ@public.gmane.org>]

* Update MAGIC constants, most of them are taken from
  /usr/include/linux/magic.h, some were found by grepping Linux source.

* Add note about fstatfs(2) broken on fd from pipe(2) between
  2.6.38 and 3.2

Signed-off-by: Cyril Hrubis <chrubis-AlSwsSmVLrQ@public.gmane.org>
---
 man2/statfs.2 | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/man2/statfs.2 b/man2/statfs.2
index 8888307..53cff11 100644
--- a/man2/statfs.2
+++ b/man2/statfs.2
@@ -72,20 +72,30 @@ Filesystem types:
 
    ADFS_SUPER_MAGIC      0xadf5
    AFFS_SUPER_MAGIC      0xADFF
+   BDEVFS_MAGIC          0x62646576
    BEFS_SUPER_MAGIC      0x42465331
    BFS_MAGIC             0x1BADFACE
+   BINFMTFS_MAGIC        0x42494e4d
+   BTRFS_SUPER_MAGIC     0x9123683E
+   CGROUP_SUPER_MAGIC    0x27e0eb
    CIFS_MAGIC_NUMBER     0xFF534D42
    CODA_SUPER_MAGIC      0x73757245
    COH_SUPER_MAGIC       0x012FF7B7
    CRAMFS_MAGIC          0x28cd3d45
+   DEBUGFS_MAGIC         0x64626720
    DEVFS_SUPER_MAGIC     0x1373
+   DEVPTS_SUPER_MAGIC    0x1cd1
+   EFIVARFS_MAGIC        0xde5e81e4
    EFS_SUPER_MAGIC       0x00414A53
    EXT_SUPER_MAGIC       0x137D
    EXT2_OLD_SUPER_MAGIC  0xEF51
    EXT2_SUPER_MAGIC      0xEF53
    EXT3_SUPER_MAGIC      0xEF53
    EXT4_SUPER_MAGIC      0xEF53
+   FUSE_SUPER_MAGIC      0x65735546
+   FUTEXFS_SUPER_MAGIC   0xBAD1DEA
    HFS_SUPER_MAGIC       0x4244
+   HOSTFS_SUPER_MAGIC    0x00c0ffee
    HPFS_SUPER_MAGIC      0xF995E849
    HUGETLBFS_MAGIC       0x958458f6
    ISOFS_SUPER_MAGIC     0x9660
@@ -95,29 +105,47 @@ Filesystem types:
    MINIX_SUPER_MAGIC2    0x138F /* 30 char minix */
    MINIX2_SUPER_MAGIC    0x2468 /* minix V2 */
    MINIX2_SUPER_MAGIC2   0x2478 /* minix V2, 30 char names */
+   MINIX3_SUPER_MAGIC    0x4d5a /* minix V3 fs, 60 char names */
+   MQUEUE_MAGIC          0x19800202
    MSDOS_SUPER_MAGIC     0x4d44
    NCP_SUPER_MAGIC       0x564c
    NFS_SUPER_MAGIC       0x6969
+   NILFS_SUPER_MAGIC     0x3434
    NTFS_SB_MAGIC         0x5346544e
    OPENPROM_SUPER_MAGIC  0x9fa1
+   PIPEFS_MAGIC          0x50495045
    PROC_SUPER_MAGIC      0x9fa0
+   PSTOREFS_MAGIC        0x6165676C
    QNX4_SUPER_MAGIC      0x002f
+   QNX6_SUPER_MAGIC      0x68191122
+   RAMFS_MAGIC           0x858458f6
    REISERFS_SUPER_MAGIC  0x52654973
    ROMFS_MAGIC           0x7275
+   SELINUX_MAGIC         0xf97cff8c
+   SMACK_MAGIC           0x43415d53
    SMB_SUPER_MAGIC       0x517B
+   SOCKFS_MAGIC          0x534F434B
+   SQUASHFS_MAGIC        0x73717368
+   SYSFS_MAGIC           0x62656572
    SYSV2_SUPER_MAGIC     0x012FF7B6
    SYSV4_SUPER_MAGIC     0x012FF7B5
    TMPFS_MAGIC           0x01021994
    UDF_SUPER_MAGIC       0x15013346
    UFS_MAGIC             0x00011954
    USBDEVICE_SUPER_MAGIC 0x9fa2
+   V9FS_MAGIC            0x01021997
    VXFS_SUPER_MAGIC      0xa501FCF5
+   XENFS_SUPER_MAGIC     0xabba1974
    XENIX_SUPER_MAGIC     0x012FF7B4
    XFS_SUPER_MAGIC       0x58465342
    _XIAFS_SUPER_MAGIC    0x012FD16D
 .fi
 .in
 .PP
+Most of these MAGIC constants are defined in
+.I /usr/include/linux/magic.h
+some are hardcoded in kernel sources.
+.PP
 Nobody knows what
 .I f_fsid
 is supposed to contain (but see below).
@@ -221,6 +249,13 @@ Some systems only have \fI<sys/vfs.h>\fP, other systems also have
 So it seems
 including the former is the best choice.
 
+Between Linux 2.6.38 and Linux 3.2
+.\" broken in commit ff0c7d15f9787b7e8c601533c015295cc68329f8
+.\" fixed in commit d70ef97baf048412c395bb5d65791d8fe133a52b
+.BR fstatfs ()
+returned ENOSYS for file descriptor created by
+.BR pipe (2) .
+
 LSB has deprecated the library calls
 .BR statfs ()
 and
-- 
1.8.5.5


-- 
Cyril Hrubis
chrubis-AlSwsSmVLrQ@public.gmane.org
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