e149ed2b80
New pseudo-filesystem: nsfs. Targets of /proc/*/ns/* live there now. It's not mountable (not even registered, so it's not in /proc/filesystems, etc.). Files on it *are* bindable - we explicitly permit that in do_loopback(). This stuff lives in fs/nsfs.c now; proc_ns_fget() moved there as well. get_proc_ns() is a macro now (it's simply returning ->i_private; would have been an inline, if not for header ordering headache). proc_ns_inode() is an ex-parrot. The interface used in procfs is ns_get_path(path, task, ops) and ns_get_name(buf, size, task, ops). Dentries and inodes are never hashed; a non-counting reference to dentry is stashed in ns_common (removed by ->d_prune()) and reused by ns_get_path() if present. See ns_get_path()/ns_prune_dentry/nsfs_evict() for details of that mechanism. As the result, proc_ns_follow_link() has stopped poking in nd->path.mnt; it does nd_jump_link() on a consistent <vfsmount,dentry> pair it gets from ns_get_path(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
#ifndef __LINUX_MAGIC_H__
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#define __LINUX_MAGIC_H__
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#define ADFS_SUPER_MAGIC 0xadf5
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#define AFFS_SUPER_MAGIC 0xadff
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#define AFS_SUPER_MAGIC 0x5346414F
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#define AUTOFS_SUPER_MAGIC 0x0187
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#define CODA_SUPER_MAGIC 0x73757245
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#define CRAMFS_MAGIC 0x28cd3d45 /* some random number */
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#define CRAMFS_MAGIC_WEND 0x453dcd28 /* magic number with the wrong endianess */
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#define DEBUGFS_MAGIC 0x64626720
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#define SECURITYFS_MAGIC 0x73636673
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#define SELINUX_MAGIC 0xf97cff8c
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#define SMACK_MAGIC 0x43415d53 /* "SMAC" */
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#define RAMFS_MAGIC 0x858458f6 /* some random number */
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#define TMPFS_MAGIC 0x01021994
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#define HUGETLBFS_MAGIC 0x958458f6 /* some random number */
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#define SQUASHFS_MAGIC 0x73717368
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#define ECRYPTFS_SUPER_MAGIC 0xf15f
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#define EFS_SUPER_MAGIC 0x414A53
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#define EXT2_SUPER_MAGIC 0xEF53
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#define EXT3_SUPER_MAGIC 0xEF53
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#define XENFS_SUPER_MAGIC 0xabba1974
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#define EXT4_SUPER_MAGIC 0xEF53
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#define BTRFS_SUPER_MAGIC 0x9123683E
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#define NILFS_SUPER_MAGIC 0x3434
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#define F2FS_SUPER_MAGIC 0xF2F52010
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#define HPFS_SUPER_MAGIC 0xf995e849
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#define ISOFS_SUPER_MAGIC 0x9660
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#define JFFS2_SUPER_MAGIC 0x72b6
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#define PSTOREFS_MAGIC 0x6165676C
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#define EFIVARFS_MAGIC 0xde5e81e4
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#define HOSTFS_SUPER_MAGIC 0x00c0ffee
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#define MINIX_SUPER_MAGIC 0x137F /* minix v1 fs, 14 char names */
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#define MINIX_SUPER_MAGIC2 0x138F /* minix v1 fs, 30 char names */
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#define MINIX2_SUPER_MAGIC 0x2468 /* minix v2 fs, 14 char names */
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#define MINIX2_SUPER_MAGIC2 0x2478 /* minix v2 fs, 30 char names */
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#define MINIX3_SUPER_MAGIC 0x4d5a /* minix v3 fs, 60 char names */
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#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */
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#define NCP_SUPER_MAGIC 0x564c /* Guess, what 0x564c is :-) */
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#define NFS_SUPER_MAGIC 0x6969
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#define OPENPROM_SUPER_MAGIC 0x9fa1
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#define QNX4_SUPER_MAGIC 0x002f /* qnx4 fs detection */
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#define QNX6_SUPER_MAGIC 0x68191122 /* qnx6 fs detection */
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#define REISERFS_SUPER_MAGIC 0x52654973 /* used by gcc */
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/* used by file system utilities that
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look at the superblock, etc. */
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#define REISERFS_SUPER_MAGIC_STRING "ReIsErFs"
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#define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
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#define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
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#define SMB_SUPER_MAGIC 0x517B
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#define CGROUP_SUPER_MAGIC 0x27e0eb
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#define STACK_END_MAGIC 0x57AC6E9D
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#define V9FS_MAGIC 0x01021997
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#define BDEVFS_MAGIC 0x62646576
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#define BINFMTFS_MAGIC 0x42494e4d
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#define DEVPTS_SUPER_MAGIC 0x1cd1
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#define FUTEXFS_SUPER_MAGIC 0xBAD1DEA
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#define PIPEFS_MAGIC 0x50495045
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#define PROC_SUPER_MAGIC 0x9fa0
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#define SOCKFS_MAGIC 0x534F434B
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#define SYSFS_MAGIC 0x62656572
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#define USBDEVICE_SUPER_MAGIC 0x9fa2
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#define MTD_INODE_FS_MAGIC 0x11307854
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#define ANON_INODE_FS_MAGIC 0x09041934
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#define BTRFS_TEST_MAGIC 0x73727279
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#define NSFS_MAGIC 0x6e736673
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#endif /* __LINUX_MAGIC_H__ */
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