mirror of https://github.com/ericonr/sbctl.git
51 lines
2.0 KiB
Go
51 lines
2.0 KiB
Go
package sbctl
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import (
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"os"
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"golang.org/x/sys/unix"
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)
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const (
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// from /usr/include/linux/fs.h
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FS_SECRM_FL = 0x00000001 /* Secure deletion */
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FS_UNRM_FL = 0x00000002 /* Undelete */
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FS_COMPR_FL = 0x00000004 /* Compress file */
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FS_SYNC_FL = 0x00000008 /* Synchronous updates */
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FS_IMMUTABLE_FL = 0x00000010 /* Immutable file */
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FS_APPEND_FL = 0x00000020 /* writes to file may only append */
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FS_NODUMP_FL = 0x00000040 /* do not dump file */
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FS_NOATIME_FL = 0x00000080 /* do not update atime */
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FS_DIRTY_FL = 0x00000100
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FS_COMPRBLK_FL = 0x00000200 /* One or more compressed clusters */
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FS_NOCOMP_FL = 0x00000400 /* Don't compress */
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FS_ECOMPR_FL = 0x00000800 /* Compression error */
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FS_BTREE_FL = 0x00001000 /* btree format dir */
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FS_INDEX_FL = 0x00001000 /* hash-indexed directory */
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FS_IMAGIC_FL = 0x00002000 /* AFS directory */
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FS_JOURNAL_DATA_FL = 0x00004000 /* Reserved for ext3 */
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FS_NOTAIL_FL = 0x00008000 /* file tail should not be merged */
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FS_DIRSYNC_FL = 0x00010000 /* dirsync behaviour (directories only) */
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FS_TOPDIR_FL = 0x00020000 /* Top of directory hierarchies*/
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FS_EXTENT_FL = 0x00080000 /* Extents */
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FS_DIRECTIO_FL = 0x00100000 /* Use direct i/o */
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FS_NOCOW_FL = 0x00800000 /* Do not cow file */
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FS_PROJINHERIT_FL = 0x20000000 /* Create with parents projid */
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FS_RESERVED_FL = 0x80000000 /* reserved for ext2 lib */
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)
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/* The code below won't work correctly if this tool is built
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* for a 64-bit big endian platform.
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* See https://github.com/golang/go/issues/45585 for context. */
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// GetAttr retrieves the attributes of a file on a linux filesystem
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func GetAttr(f *os.File) (int32, error) {
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attr_int, err := unix.IoctlGetInt(int(f.Fd()), unix.FS_IOC_GETFLAGS)
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return int32(attr_int), err
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}
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// SetAttr sets the attributes of a file on a linux filesystem to the given value
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func SetAttr(f *os.File, attr int32) error {
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return unix.IoctlSetPointerInt(int(f.Fd()), unix.FS_IOC_SETFLAGS, int(attr))
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}
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