v1.11.0

ADDED:
* fsutils: better/additional fsattrs functionality
* paths: highly filterable filesystem searching

.gitignore

@@ -29,6 +29,9 @@
 # Test binary, built with `go test -c`
 *.test
 
+# Test file
+fsutils/testfile
+
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 

auger/TODO

@@ -0,0 +1 @@
+This module is still under work.

auger/consts.go

@@ -7,3 +7,35 @@ const (
 	augInclTfm      string = "incl"               // The transformer keyword for Augeas includes.
 	augAppendSuffix string = "[last()+1]"
 )
+
+var (
+	dstPtrTrue  bool = true
+	dstPtrFalse bool = false
+)
+
+var (
+	// PtrTrue and PtrFalse are convenience references for constructing an AugFlags if needed. It is recommended you do not change these values if you do not like being confused.
+	PtrTrue  *bool = &dstPtrTrue
+	PtrFalse *bool = &dstPtrFalse
+)
+
+/*
+	IncludeOptNone is the default include recursion option for Aug.RecursiveInclude.
+	* No special behavior is defined
+	* All include directives are assumed to refer:
+		* Explicitly/exclusively to file paths
+		* That must exist
+*/
+const IncludeOptNone includeOpt = 0
+const (
+	// IncludeOptNoExist specifies that inclusions are allowed to not exist, otherwise an error will be raised while attempting to parse them.
+	IncludeOptNoExist includeOpt = 1 << iota
+	// IncludeOptGlobbing indicates that the inclusion system supports globbing (as supported by (github.com/gobwas/glob).Match).
+	IncludeOptGlobbing
+	// IncludeOptRegex indicates that the inclusion system supports matching by regex (as supported by regexp).
+	IncludeOptRegex
+	// IncludeOptDirs indicates that the inclusion system supports matching by directory.
+	IncludeOptDirs
+	// IncludeOptDirsRecursive indicates that the inclusion system also recurses into subdirectories of matched directories. Only used if IncludeOptDirs is also set.
+	IncludeOptDirsRecursive
+)

auger/funcs.go

@@ -4,15 +4,55 @@ import (
 	`io/fs`
 	`os`
 	`strings`
+
+	`honnef.co/go/augeas`
+	`r00t2.io/goutils/bitmask`
 )
 
 /*
-	AugpathToFspath returns the filesystem path from an Augeas path.
+	NewAuger returns an auger.Aug.
+
+	See:
+		https://pkg.go.dev/honnef.co/go/augeas#readme-examples
+		https://pkg.go.dev/honnef.co/go/augeas#New
+	for the `root` and `loadPath` parameters
+	(and, by extension, the `flags` paraemter; note that the `flags`
+	is an auger.AugFlags, not an augeas.Flag!).
+
+	`flags` may be nil.
+*/
+func NewAuger(root, loadPath string, flags *AugFlags) (aug *Aug, err error) {
+
+	aug = new(Aug)
+
+	if aug.aug, err = augeas.New(root, loadPath, flags.Eval()); err != nil {
+		return
+	}
+
+	return
+}
+
+// NewAugerFromAugeas returns a wrapped auger.Aug from a (honnef.co/go/augeas).Augeas.
+func NewAugerFromAugeas(orig augeas.Augeas) (aug *Aug) {
+
+	aug = new(Aug)
+	aug.aug = orig
+
+	return
+}
+
+/*
+	AugpathToFspath returns the filesystem path (i.e. an existing file) from an Augeas path.
 
 	It is *required* and expected that the Augeas standard /files prefix be removed first;
 	if not, it is assumed to be part of the filesystem path.
 
 	If a valid path cannot be determined, fsPath will be empty.
+
+	To be clear, a file must exist for fsPath to not be empty;
+	the way AugpathToFsPath works is it recurses bottom-up a
+	given path and checks for the existence of a file,
+	continuing upwards if not found.
 */
 func AugpathToFspath(augPath string) (fsPath string, err error) {
 
@@ -61,3 +101,11 @@ func dedupePaths(new, existing []string) (missing []string) {
 
 	return
 }
+
+// getInclPaths applies path options to inclusions.
+func getInclPaths(pathSpec string, inclFlags *bitmask.MaskBit) (fpaths []string, err error) {
+
+	// TODO
+
+	return
+}

auger/funcs_aug.go

@@ -12,6 +12,7 @@ import (
 	`github.com/davecgh/go-spew/spew`
 	`github.com/google/shlex`
 	`honnef.co/go/augeas`
+	`r00t2.io/goutils/bitmask`
 	`r00t2.io/sysutils/paths`
 )
 
@@ -146,10 +147,21 @@ breakCmd:
 	An error will be returned if augLens is a nonexistent or not-loaded Augeas lens module.
 
 	Depending on how many files there are and whether globs vs. explicit filepaths are included, this may take a while.
-*/
-func (a *Aug) RecursiveInclude(augLens, includeDirective, fsRoot string) (err error) {
 
-	if err = a.addIncl(includeDirective, augLens, fsRoot, nil); err != nil {
+	optFlags may be nil, multiple includeOpt (see the IncludeOpt* constants) as variadic parameters/expanded slice,
+	bitwise-OR'd together, or multiple non-OR'd and OR'd together (all will be combined to a single value).
+*/
+func (a *Aug) RecursiveInclude(augLens, includeDirective, fsRoot string, optFlags ...includeOpt) (err error) {
+
+	var flags *bitmask.MaskBit = bitmask.NewMaskBit()
+
+	if optFlags != nil && len(optFlags) > 0 {
+		for _, f := range optFlags {
+			flags.AddFlag(f.toMb())
+		}
+	}
+
+	if err = a.addIncl(includeDirective, augLens, fsRoot, nil, flags); err != nil {
 		return
 	}
 
@@ -164,14 +176,16 @@ func (a *Aug) RecursiveInclude(augLens, includeDirective, fsRoot string) (err er
 	newInclPaths are new filesystem paths/Augeas-compatible glob patterns to load into the filetree and recurse into.
 	They may be nil, especially if the first run.
 */
-func (a *Aug) addIncl(includeDirective, augLens string, fsRoot string, newInclPaths []string) (err error) {
+func (a *Aug) addIncl(includeDirective, augLens string, fsRoot string, newInclPaths []string, inclFlags *bitmask.MaskBit) (err error) {
 
 	var matches []string                                   // Passed around set of Augeas matches.
+	var exists bool                                        // Used to indicate if the include path exists.
 	var includes []string                                  // Filepath(s)/glob(s) from fetching includeDirective in lensInclPath. These are internal to the application but are recursed.
 	var lensInclPath string                                // The path of the included paths in the tree. These are internal to Augeas, not the application.
 	var appendPath string                                  // The path for new Augeas includes.
 	var match []string                                     // A placeholder for iterating when populating includes.
 	var fpath string                                       // A placeholder for finding the path of a conf file that contains an includeDirective.
+	var normalizedIncludes []string                        // A temporary slice to hold normalization operations and other dynamic building.
 	var lensPath string = fmt.Sprintf(augLensTpl, augLens) // The path of the lens (augLens) itself.
 	var augErr *augeas.Error = new(augeas.Error)           // We use this to skip "nonexistent" lens.
 
@@ -193,7 +207,7 @@ func (a *Aug) addIncl(includeDirective, augLens string, fsRoot string, newInclPa
 
 	// First canonize paths.
 	if newInclPaths != nil && len(newInclPaths) > 0 {
-		// Existing includes. We don't return on an empty lensInclPath because
+		// Existing includes. We don't return on an empty lensInclPath.
 		if matches, err = a.aug.Match(lensInclPath); err != nil {
 			if errors.As(err, augErr) && augErr.Code == augeas.NoMatch {
 				err = nil
@@ -221,6 +235,17 @@ func (a *Aug) addIncl(includeDirective, augLens string, fsRoot string, newInclPa
 		// We don't want to bother adding multiple incl's for the same path(s); it can negatively affect Augeas loads.
 		newInclPaths = dedupePaths(newInclPaths, matches)
 
+		// And then apply things like recursion, globbing, etc.
+		normalizedIncludes = make([]string, 0, len(newInclPaths))
+		if inclFlags.HasFlag(IncludeOptGlobbing.toMb()) {
+			// TODO
+			/*
+				if strings.Contains(newInclPaths[idx], "*") {
+
+				}
+			*/
+		}
+
 		// Add the new path(s) as Augeas include entries.
 		if newInclPaths != nil {
 			for _, fsPath := range newInclPaths {
@@ -285,10 +310,13 @@ func (a *Aug) addIncl(includeDirective, augLens string, fsRoot string, newInclPa
 	}
 
 	if matches != nil && len(matches) != 0 {
-		if err = a.addIncl(includeDirective, augLens, fsRoot, matches); err != nil {
+		if err = a.addIncl(includeDirective, augLens, fsRoot, matches, inclFlags); err != nil {
 			return
 		}
 	}
 
+	// TODO
+	_, _ = exists, normalizedIncludes
+
 	return
 }

auger/funcs_augflags.go

@@ -7,6 +7,10 @@ import (
 // Eval returns an evaluated set of flags.
 func (a *AugFlags) Eval() (augFlags augeas.Flag) {
 
+	if a == nil {
+		return
+	}
+
 	augFlags = augeas.None
 
 	if a.Backup != nil && *a.Backup {

auger/funcs_includeopt.go

@@ -0,0 +1,13 @@
+package auger
+
+import (
+	`r00t2.io/goutils/bitmask`
+)
+
+// toMb returns a bitmask.MaskBit of this includeOpt.
+func (i includeOpt) toMb() (mb bitmask.MaskBit) {
+
+	mb = bitmask.MaskBit(i)
+
+	return
+}

auger/funcs_test.go

@@ -0,0 +1,39 @@
+package auger
+
+import (
+	"testing"
+
+	`honnef.co/go/augeas`
+)
+
+func TestNewAuger(t *testing.T) {
+
+	var aug *Aug
+	var augUnder augeas.Augeas
+	var err error
+
+	if aug, err = NewAuger("/", "", nil); err != nil {
+		t.Fatal(err)
+	}
+
+	augUnder = aug.aug
+
+	aug = NewAugerFromAugeas(augUnder)
+
+	_ = aug
+}
+
+func TestRecursiveInclude(t *testing.T) {
+
+	var aug *Aug
+	var err error
+
+	if aug, err = NewAuger("/", "", &AugFlags{DryRun: PtrTrue}); err != nil {
+		t.Fatal(err)
+	}
+
+	// This requires Nginx to be installed and with a particularly complex nested include system.
+	if err = aug.RecursiveInclude("Nginx", "include", "/etc/nginx"); err != nil {
+		t.Fatal(err)
+	}
+}

auger/types.go

@@ -2,8 +2,11 @@ package auger
 
 import (
 	`honnef.co/go/augeas`
+	`r00t2.io/goutils/bitmask`
 )
 
+type includeOpt bitmask.MaskBit
+
 // Aug is a wrapper around (honnef.co/go/)augeas.Augeas. Remember to call Aug.Close().
 type Aug struct {
 	aug augeas.Augeas

cryptparse/doc.go

@@ -3,3 +3,4 @@
 
 	It is now its own module: r00t2.io/cryptparse
 */
+package cryptparse

envs/funcs.go

@@ -159,7 +159,7 @@ func GetPidEnvMap(pid uint32) (envMap map[string]string, err error) {
 	var procPath string
 	var exists bool
 
-	envMap = make(map[string]string, 0)
+	envMap = make(map[string]string)
 
 	procPath = fmt.Sprintf("/proc/%v/environ", pid)
 

envs/utils.go

@@ -13,7 +13,7 @@ func envListToMap(envs []string) (envMap map[string]string) {
 	var kv []string
 	var k, v string
 
-	envMap = make(map[string]string, 0)
+	envMap = make(map[string]string)
 
 	for _, ev := range envs {
 		kv = strings.SplitN(ev, "=", 2)

fsutils/TODO

@@ -0,0 +1,3 @@
+- XATTRS
+(see FS_XFLAG_* in fs.h, FS_IOC_FSGETXATTR/FS_IOC_FSSETXATTR)
+- fs label, UUID? (fs.h)

fsutils/consts.go

@@ -1,101 +1,36 @@
 package fsutils
 
-import (
-	`github.com/g0rbe/go-chattr`
-)
-
-// https://github.com/torvalds/linux/blob/master/include/uapi/linux/fs.h
-const (
-	SecureDelete       uint32 = chattr.FS_SECRM_FL        // Secure deletion
-	UnDelete                  = chattr.FS_UNRM_FL         // Undelete
-	CompressFile              = chattr.FS_COMPR_FL        // Compress file
-	SyncUpdatechattr          = chattr.FS_SYNC_FL         // Synchronous updates
-	Immutable                 = chattr.FS_IMMUTABLE_FL    // Immutable file
-	AppendOnly                = chattr.FS_APPEND_FL       // Writes to file may only append
-	NoDumpFile                = chattr.FS_NODUMP_FL       // Do not dump file
-	NoUpdateAtime             = chattr.FS_NOATIME_FL      // Do not update atime
-	IsDirty                   = chattr.FS_DIRTY_FL        // Nobody knows what this does, lol.
-	CompressedClusters        = chattr.FS_COMPRBLK_FL     // One or more compressed clusters
-	NoCompress                = chattr.FS_NOCOMP_FL       // Don't compress
-	EncFile                   = chattr.FS_ENCRYPT_FL      // Encrypted file
-	BtreeFmt                  = chattr.FS_BTREE_FL        // Btree format dir
-	HashIdxDir                = chattr.FS_INDEX_FL        // Hash-indexed directory
-	AfsDir                    = chattr.FS_IMAGIC_FL       // AFS directory
-	ReservedExt3              = chattr.FS_JOURNAL_DATA_FL // Reserved for ext3
-	NoMergeTail               = chattr.FS_NOTAIL_FL       // File tail should not be merged
-	DirSync                   = chattr.FS_DIRSYNC_FL      // dirsync behaviour (directories only)
-	DirTop                    = chattr.FS_TOPDIR_FL       // Top of directory hierarchies
-	ReservedExt4a             = chattr.FS_HUGE_FILE_FL    // Reserved for ext4
-	Extents                   = chattr.FS_EXTENT_FL       // Extents
-	LargeEaInode              = chattr.FS_EA_INODE_FL     // Inode used for large EA
-	ReservedExt4b             = chattr.FS_EOFBLOCKS_FL    // Reserved for ext4
-	NoCOWFile                 = chattr.FS_NOCOW_FL        // Do not cow file
-	ReservedExt4c             = chattr.FS_INLINE_DATA_FL  // Reserved for ext4
-	UseParentProjId           = chattr.FS_PROJINHERIT_FL  // Create with parents projid
-	ReservedExt2              = chattr.FS_RESERVED_FL     // Reserved for ext2 lib
-)
-
 var (
-	// AttrNameValueMap contains a mapping of attribute names (as designated by this package) to their flag values.
-	AttrNameValueMap map[string]uint32 = map[string]uint32{
-		"SecureDelete":       SecureDelete,
-		"UnDelete":           UnDelete,
-		"CompressFile":       CompressFile,
-		"SyncUpdatechattr":   SyncUpdatechattr,
-		"Immutable":          Immutable,
-		"AppendOnly":         AppendOnly,
-		"NoDumpFile":         NoDumpFile,
-		"NoUpdateAtime":      NoUpdateAtime,
-		"IsDirty":            IsDirty,
-		"CompressedClusters": CompressedClusters,
-		"NoCompress":         NoCompress,
-		"EncFile":            EncFile,
-		"BtreeFmt":           BtreeFmt,
-		"HashIdxDir":         HashIdxDir,
-		"AfsDir":             AfsDir,
-		"ReservedExt3":       ReservedExt3,
-		"NoMergeTail":        NoMergeTail,
-		"DirSync":            DirSync,
-		"DirTop":             DirTop,
-		"ReservedExt4a":      ReservedExt4a,
-		"Extents":            Extents,
-		"LargeEaInode":       LargeEaInode,
-		"ReservedExt4b":      ReservedExt4b,
-		"NoCOWFile":          NoCOWFile,
-		"ReservedExt4c":      ReservedExt4c,
-		"UseParentProjId":    UseParentProjId,
-		"ReservedExt2":       ReservedExt2,
-	}
 	/*
-		AttrValueNameMap contains a mapping of attribute flags to their names (as designated by this package).
+		linuxFsAttrsListOrder defines the order the attributes are printed in per e2fsprogs.
-		Note the oddball here, BtreeFmt and HashIdxDir are actually the same value, so be forewarned.
+
+		See flags_name at https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/tree/lib/e2p/pf.c for order.
+		Up to date as of e2fsprogs v1.47.1, Linux 6.12-rc7.
+
+		The below are the struct field names for easier reflection.
 	*/
-	AttrValueNameMap map[uint32]string = map[uint32]string{
+	linuxFsAttrsListOrder []string = []string{
-		SecureDelete:       "SecureDelete",
+		"SecureDelete",
-		UnDelete:           "UnDelete",
+		"UnDelete",
-		CompressFile:       "CompressFile",
+		"SyncUpdate",
-		SyncUpdatechattr:   "SyncUpdatechattr",
+		"DirSync",
-		Immutable:          "Immutable",
+		"Immutable",
-		AppendOnly:         "AppendOnly",
+		"AppendOnly",
-		NoDumpFile:         "NoDumpFile",
+		"NoDumpFile",
-		NoUpdateAtime:      "NoUpdateAtime",
+		"NoUpdateAtime",
-		IsDirty:            "IsDirty",
+		"CompressFile",
-		CompressedClusters: "CompressedClusters",
+		"EncFile",
-		NoCompress:         "NoCompress",
+		"ReservedExt3",
-		EncFile:            "EncFile",
+		"HashIdxDir",
-		BtreeFmt:           "BtreeFmt|HashIdxDir", // Well THIS is silly and seems like an oversight. Both FS_BTREE_FL and FS_INDEX_FL have the same flag. Confirmed in kernel source.
+		"NoMergeTail",
-		AfsDir:             "AfsDir",
+		"DirTop",
-		ReservedExt3:       "ReservedExt3",
+		"Extents",
-		NoMergeTail:        "NoMergeTail",
+		"NoCOWFile",
-		DirSync:            "DirSync",
+		"DAX",
-		DirTop:             "DirTop",
+		"CaseInsensitive",
-		ReservedExt4a:      "ReservedExt4a",
+		"ReservedExt4c",
-		Extents:            "Extents",
+		"UseParentProjId",
-		LargeEaInode:       "LargeEaInode",
+		"VerityProtected",
-		ReservedExt4b:      "ReservedExt4b",
+		"NoCompress",
-		NoCOWFile:          "NoCOWFile",
-		ReservedExt4c:      "ReservedExt4c",
-		UseParentProjId:    "UseParentProjId",
-		ReservedExt2:       "ReservedExt2",
 	}
 )

fsutils/consts_lin.go

@@ -0,0 +1,127 @@
+package fsutils
+
+/*
+	https://github.com/torvalds/linux/blob/master/include/uapi/linux/fs.h "Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)"
+	Up to date as of Linux 6.12-rc7.
+*/
+const (
+	SecureDelete       fsAttr = 1 << iota // Secure deletion
+	UnDelete                              // Undelete
+	CompressFile                          // Compress file
+	SyncUpdate                            // Synchronous updates
+	Immutable                             // Immutable file
+	AppendOnly                            // Writes to file may only append
+	NoDumpFile                            // Do not dump file
+	NoUpdateAtime                         // Do not update atime
+	IsDirty                               // Nobody knows what this does, lol.
+	CompressedClusters                    // One or more compressed clusters
+	NoCompress                            // Don't compress
+	EncFile                               // Encrypted file
+	BtreeFmt                              // Btree format dir
+	AfsDir                                // AFS directory
+	ReservedExt3                          // Reserved for ext3
+	NoMergeTail                           // File tail should not be merged
+	DirSync                               // dirsync behaviour (directories only)
+	DirTop                                // Top of directory hierarchies
+	ReservedExt4a                         // Reserved for ext4
+	Extents                               // Extents
+	VerityProtected                       // Verity-protected inode
+	LargeEaInode                          // Inode used for large EA
+	ReservedExt4b                         // Reserved for ext4
+	NoCOWFile                             // Do not cow file
+	_                                     // (Unused)
+	DAX                                   // Inode is DAX
+	_                                     // (Unused)
+	_                                     // (Unused)
+	ReservedExt4c                         // Reserved for ext4
+	UseParentProjId                       // Create with parents projid
+	CaseInsensitive                       // Folder is case-insensitive
+	ReservedExt2                          // Reserved for ext2 lib
+)
+
+// These are the same value. For some reason.
+const (
+	HashIdxDir fsAttr = BtreeFmt // Hash-indexed directory
+)
+
+var (
+	// AttrNameValueMap contains a mapping of attribute names (as designated by this package) to their flag values.
+	AttrNameValueMap map[string]fsAttr = map[string]fsAttr{
+		"SecureDelete":       SecureDelete,
+		"UnDelete":           UnDelete,
+		"CompressFile":       CompressFile,
+		"SyncUpdate":         SyncUpdate,
+		"Immutable":          Immutable,
+		"AppendOnly":         AppendOnly,
+		"NoDumpFile":         NoDumpFile,
+		"NoUpdateAtime":      NoUpdateAtime,
+		"IsDirty":            IsDirty,
+		"CompressedClusters": CompressedClusters,
+		"NoCompress":         NoCompress,
+		"EncFile":            EncFile,
+		"BtreeFmt":           BtreeFmt,
+		"HashIdxDir":         HashIdxDir,
+		"AfsDir":             AfsDir,
+		"ReservedExt3":       ReservedExt3,
+		"NoMergeTail":        NoMergeTail,
+		"DirSync":            DirSync,
+		"DirTop":             DirTop,
+		"ReservedExt4a":      ReservedExt4a,
+		"Extents":            Extents,
+		"VerityProtected":    VerityProtected,
+		"LargeEaInode":       LargeEaInode,
+		"ReservedExt4b":      ReservedExt4b,
+		"NoCOWFile":          NoCOWFile,
+		"DAX":                DAX,
+		"ReservedExt4c":      ReservedExt4c,
+		"UseParentProjId":    UseParentProjId,
+		"CaseInsensitive":    CaseInsensitive,
+		"ReservedExt2":       ReservedExt2,
+	}
+
+	/*
+		AttrValueNameMap contains a mapping of attribute flags to their names (as designated by this package).
+		Note the oddball here, BtreeFmt and HashIdxDir are actually the same value, so their string value is unpredictable.
+	*/
+	AttrValueNameMap map[fsAttr]string = invertMap(AttrNameValueMap)
+
+	// KernelNameValueMap allows lookups using the symbol name as used in the Linux kernel source.
+	KernelNameValueMap map[string]fsAttr = map[string]fsAttr{
+		"FS_SECRM_FL":        SecureDelete,
+		"FS_UNRM_FL":         UnDelete,
+		"FS_COMPR_FL":        CompressFile,
+		"FS_SYNC_FL":         SyncUpdate,
+		"FS_IMMUTABLE_FL":    Immutable,
+		"FS_APPEND_FL":       AppendOnly,
+		"FS_NODUMP_FL":       NoDumpFile,
+		"FS_NOATIME_FL":      NoUpdateAtime,
+		"FS_DIRTY_FL":        IsDirty,
+		"FS_COMPRBLK_FL":     CompressedClusters,
+		"FS_NOCOMP_FL":       NoCompress,
+		"FS_ENCRYPT_FL":      EncFile,
+		"FS_BTREE_FL":        BtreeFmt,
+		"FS_INDEX_FL":        HashIdxDir,
+		"FS_IMAGIC_FL":       AfsDir,
+		"FS_JOURNAL_DATA_FL": ReservedExt3,
+		"FS_NOTAIL_FL":       NoMergeTail,
+		"FS_DIRSYNC_FL":      DirSync,
+		"FS_TOPDIR_FL":       DirTop,
+		"FS_HUGE_FILE_FL":    ReservedExt4a,
+		"FS_EXTENT_FL":       Extents,
+		"FS_VERITY_FL":       VerityProtected,
+		"FS_EA_INODE_FL":     LargeEaInode,
+		"FS_EOFBLOCKS_FL":    ReservedExt4b,
+		"FS_NOCOW_FL":        NoCOWFile,
+		"FS_DAX_FL":          DAX,
+		"FS_INLINE_DATA_FL":  ReservedExt4c,
+		"FS_PROJINHERIT_FL":  UseParentProjId,
+		"FS_CASEFOLD_FL":     CaseInsensitive,
+		"FS_RESERVED_FL":     ReservedExt2,
+	}
+
+	/*
+		KernelValueNameMap contains a mapping of attribute flags to their kernel source symbol name.
+		Note the oddball here, BtreeFmt and HashIdxDir are actually the same value, so their string value is unpredictable.
+	*/
+	KernelValueNameMap map[fsAttr]string = invertMap(KernelNameValueMap)
+)

fsutils/doc.go

@@ -0,0 +1,7 @@
+/*
+	fsutils is a collection of filesystem-related functions, types, etc.
+
+	Currently it's only a (fixed/actually working) reimplementation of github.com/g0rbe/go-chattr.
+	(Note to library maintainers, if someone reports an integer overflow and even tells you how to fix it, you should probably fix it.)
+*/
+package fsutils

fsutils/funcs.go

@@ -1,44 +1,16 @@
 package fsutils
 
-import (
+// invertMap returns some handy consts remapping for easier lookups.
-	`os`
+func invertMap(origMap map[string]fsAttr) (newMap map[fsAttr]string) {
-	`reflect`
 
-	`github.com/g0rbe/go-chattr`
+	if origMap == nil {
-	`r00t2.io/sysutils/paths`
-)
-
-func GetAttrs(path string) (attrs *FsAttrs, err error) {
-
-	var f *os.File
-	var evalAttrs FsAttrs
-	var attrVal uint32
-	var reflectVal reflect.Value
-	var field reflect.Value
-	var myPath string = path
-
-	if err = paths.RealPath(&myPath); err != nil {
 		return
 	}
+	newMap = make(map[fsAttr]string)
 
-	if f, err = os.Open(myPath); err != nil {
+	for k, v := range origMap {
-		return
+		newMap[v] = k
 	}
-	defer f.Close()
-
-	reflectVal = reflect.ValueOf(&evalAttrs).Elem()
-
-	if attrVal, err = chattr.GetAttrs(f); err != nil {
-		return
-	}
-
-	for attrNm, attrInt := range AttrNameValueMap {
-		field = reflectVal.FieldByName(attrNm)
-		field.SetBool((attrVal & attrInt) != 0)
-	}
-
-	attrs = new(FsAttrs)
-	*attrs = evalAttrs
 
 	return
 }

fsutils/funcs_fsattrs.go

@@ -1,43 +1,96 @@
 package fsutils
 
 import (
-	`os`
 	`reflect`
-
+	`strings`
-	`github.com/g0rbe/go-chattr`
-	`r00t2.io/sysutils/paths`
 )
 
-func (f *FsAttrs) Apply(path string) (err error) {
+/*
+	String returns a string representation (comparable to lsattr(1)) of an FsAttrs.
 
-	var file *os.File
+	Not all flags are represented, as this aims for compatibility with e2fsprogs/lsattr output.
-	var reflectVal reflect.Value
+*/
+func (f *FsAttrs) String() (s string) {
+
+	// Flags have their short name printed if set, otherwise a '-' placeholder is used.
+	// https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/tree/lib/e2p/pf.c
+
+	var refType reflect.Type
+	var refVal reflect.Value
+	var refField reflect.StructField
 	var fieldVal reflect.Value
+	var tagVal string
+	var sb strings.Builder
 
-	var myPath string = path
+	if f == nil {
-
+		s = strings.Repeat("-", len(linuxFsAttrsListOrder))
-	if err = paths.RealPath(&myPath); err != nil {
 		return
 	}
-	if file, err = os.Open(myPath); err != nil {
+
-		return
+	refVal = reflect.ValueOf(*f)
+	refType = refVal.Type()
+	for _, fn := range linuxFsAttrsListOrder {
+		refField, _ = refType.FieldByName(fn)
+		tagVal = refField.Tag.Get("fsAttrShort")
+		if tagVal == "" || tagVal == "-" {
+			continue
 		}
-	defer file.Close()
+		fieldVal = refVal.FieldByName(fn)
-
-	reflectVal = reflect.ValueOf(*f)
-
-	for attrNm, attrVal := range AttrNameValueMap {
-		fieldVal = reflectVal.FieldByName(attrNm)
 		if fieldVal.Bool() {
-			if err = chattr.SetAttr(file, attrVal); err != nil {
+			sb.WriteString(tagVal)
-				return
-			}
 		} else {
-			if err = chattr.UnsetAttr(file, attrVal); err != nil {
+			sb.WriteString("-")
-				return
-			}
 		}
 	}
 
+	s = sb.String()
+
+	return
+}
+
+/*
+	StringLong returns a more extensive/"human-friendly" representation (comparable to lsattr(1) wiih -l) of an Fsattrs.
+
+	Not all flags are represented, as this aims for compatibility with e2fsprogs/lsattr output.
+*/
+func (f *FsAttrs) StringLong() (s string) {
+
+	// The long names are separated via a commma then a space.
+	// If no attrs are set, the string "---" is used.
+	// https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/tree/lib/e2p/pf.c
+
+	var refType reflect.Type
+	var refVal reflect.Value
+	var refField reflect.StructField
+	var fieldVal reflect.Value
+	var tagVal string
+	var out []string
+
+	if f == nil {
+		s = strings.Repeat("-", 3)
+		return
+	}
+
+	refVal = reflect.ValueOf(*f)
+	refType = refVal.Type()
+	for _, fn := range linuxFsAttrsListOrder {
+		refField, _ = refType.FieldByName(fn)
+		tagVal = refField.Tag.Get("fsAttrLong")
+		if tagVal == "" || tagVal == "-" {
+			continue
+		}
+		fieldVal = refVal.FieldByName(fn)
+		if fieldVal.Bool() {
+			out = append(out, tagVal)
+		}
+	}
+
+	if out == nil || len(out) == 0 {
+		s = strings.Repeat("-", 3)
+		return
+	}
+
+	s = strings.Join(out, ", ")
+
 	return
 }

fsutils/funcs_fsattrs_linux.go

@@ -0,0 +1,46 @@
+//go:build linux
+
+package fsutils
+
+import (
+	`os`
+	`reflect`
+
+	`r00t2.io/sysutils/paths`
+)
+
+func (f *FsAttrs) Apply(path string) (err error) {
+
+	var file *os.File
+	var reflectVal reflect.Value
+	var fieldVal reflect.Value
+
+	if f == nil {
+		return
+	}
+
+	if err = paths.RealPath(&path); err != nil {
+		return
+	}
+	if file, err = os.Open(path); err != nil {
+		return
+	}
+	defer file.Close()
+
+	reflectVal = reflect.ValueOf(*f)
+
+	for attrNm, attrVal := range AttrNameValueMap {
+		fieldVal = reflectVal.FieldByName(attrNm)
+		if fieldVal.Bool() {
+			if err = setAttrs(file, attrVal); err != nil {
+				return
+			}
+		} else {
+			if err = unsetAttrs(file, attrVal); err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}

fsutils/funcs_linux.go

@@ -0,0 +1,134 @@
+//go:build linux
+
+package fsutils
+
+import (
+	`os`
+	`reflect`
+	`unsafe`
+
+	`golang.org/x/sys/unix`
+	`r00t2.io/goutils/bitmask`
+	`r00t2.io/sysutils/paths`
+)
+
+func GetAttrs(path string) (attrs *FsAttrs, err error) {
+
+	var f *os.File
+	var evalAttrs FsAttrs
+	var attrVal fsAttr
+	var attrValBit bitmask.MaskBit
+	var reflectVal reflect.Value
+	var field reflect.Value
+	var myPath string = path
+
+	if err = paths.RealPath(&myPath); err != nil {
+		return
+	}
+
+	if f, err = os.Open(myPath); err != nil {
+		return
+	}
+	defer f.Close()
+
+	reflectVal = reflect.ValueOf(&evalAttrs).Elem()
+
+	if attrVal, err = getAttrs(f); err != nil {
+		return
+	}
+	attrValBit = bitmask.MaskBit(attrVal)
+
+	for attrNm, attrInt := range AttrNameValueMap {
+		field = reflectVal.FieldByName(attrNm)
+		field.SetBool(attrValBit.HasFlag(bitmask.MaskBit(attrInt)))
+	}
+
+	attrs = new(FsAttrs)
+	*attrs = evalAttrs
+
+	return
+}
+
+// getAttrs is the unexported low-level syscall to get attributes.
+func getAttrs(f *os.File) (attrVal fsAttr, err error) {
+
+	var u uint
+	var curFlags int
+	// var errNo syscall.Errno
+
+	/*
+		if _, _, errNo = unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.FS_IOC_GETFLAGS, uintptr(unsafe.Pointer(&curFlags))); errNo != 0 {
+			err = os.NewSyscallError("ioctl: FS_IOC_GETFLAGS", errNo)
+			return
+		}
+	*/
+	if curFlags, err = unix.IoctlGetInt(int(f.Fd()), unix.FS_IOC_GETFLAGS); err != nil {
+		return
+	}
+
+	u = uint(curFlags)
+
+	attrVal = fsAttr(u)
+
+	return
+}
+
+// setAttrs is the unexported low-level syscall to set attributes. attrs may be OR'd.
+func setAttrs(f *os.File, attrs fsAttr) (err error) {
+
+	var curAttrs fsAttr
+	var ab bitmask.MaskBit
+	var errNo unix.Errno
+	var val uint
+
+	if curAttrs, err = getAttrs(f); err != nil {
+		return
+	}
+	ab = bitmask.MaskBit(curAttrs)
+
+	if ab.HasFlag(bitmask.MaskBit(attrs)) {
+		return
+	}
+
+	ab.AddFlag(bitmask.MaskBit(attrs))
+
+	val = ab.Value()
+
+	/*
+		if err = unix.IoctlSetInt(int(f.Fd()), unix.FS_IOC_SETFLAGS, int(ab.Value())); err != nil {
+			return
+		}
+	*/
+	if _, _, errNo = unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.FS_IOC_SETFLAGS, uintptr(unsafe.Pointer(&val))); errNo != 0 {
+		err = os.NewSyscallError("ioctl: SYS_IOCTL", errNo)
+		return
+	}
+
+	return
+}
+
+// unsetAttrs is the unexported low-level syscall to remove attributes. attrs may be OR'd.
+func unsetAttrs(f *os.File, attrs fsAttr) (err error) {
+
+	var curAttrs fsAttr
+	var ab bitmask.MaskBit
+
+	if curAttrs, err = getAttrs(f); err != nil {
+		return
+	}
+	ab = bitmask.MaskBit(curAttrs)
+
+	if !ab.HasFlag(bitmask.MaskBit(attrs)) {
+		return
+	}
+
+	ab.ClearFlag(bitmask.MaskBit(attrs))
+
+	/*
+		if err = unix.IoctlSetInt(int(f.Fd()), unix.FS_IOC_SETFLAGS, int(ab.Value())); err != nil {
+			return
+		}
+	*/
+
+	return
+}

fsutils/funcs_linux_test.go

@@ -1,3 +1,5 @@
+//go:build linux
+
 package fsutils
 
 import (
@@ -7,12 +9,13 @@ import (
 	`os/user`
 	`testing`
 
+	`github.com/davecgh/go-spew/spew`
 	`r00t2.io/sysutils/paths`
 )
 
 var (
 	testFilename   string = "testfile"
-	testErrBadUser error  = errors.New("test must be run as root, on Linux")
+	testErrBadUser error  = errors.New("test must be run as root")
 )
 
 func testChkUser() (err error) {
@@ -36,12 +39,18 @@ func TestSetAttrs(t *testing.T) {
 	if attrs, err = GetAttrs(testFilename); err != nil {
 		t.Fatalf("Failed to get attrs for %v: %v", testFilename, err)
 	}
-	t.Logf("Attrs for %v:\n%#v", testFilename, attrs)
+	t.Logf("Attrs for %v (before):\n%s", testFilename, spew.Sdump(attrs))
 	attrs.CompressFile = true
+	attrs.SyncUpdate = true
+	attrs.SecureDelete = true
 	if err = attrs.Apply(testFilename); err != nil {
 		t.Fatalf("Failed to apply attrs to %v: %v", testFilename, err)
 	}
 	t.Logf("Applied new attrs to %v:\n%#v", testFilename, attrs)
+	if attrs, err = GetAttrs(testFilename); err != nil {
+		t.Fatalf("Failed to get attrs for %v: %v", testFilename, err)
+	}
+	t.Logf("Attrs for %v (after):\n%s", testFilename, spew.Sdump(attrs))
 }
 
 func TestMain(t *testing.M) {

fsutils/types.go

@@ -1,32 +1,44 @@
 package fsutils
 
-// FsAttrs is a convenience struct around github.com/g0rbe/go-chattr.
+import (
+	`r00t2.io/goutils/bitmask`
+)
+
+type fsAttr bitmask.MaskBit
+
+/*
+	FsAttrs is a struct representation of filesystem attributes on Linux.
+	Up to date as of Linux 6.12-rc7.
+*/
 type FsAttrs struct {
-	SecureDelete       bool
+	SecureDelete       bool `fsAttrShort:"s" fsAttrLong:"Secure_Deletion" fsAttrKern:"FS_SECRM_FL" json:"secure_delete" toml:"SecureDelete" yaml:"Secure Delete" xml:"secureDelete,attr"`
-	UnDelete           bool
+	UnDelete           bool `fsAttrShort:"u" fsAttrLong:"Undelete" fsAttrKern:"FS_UNRM_FL" json:"undelete" toml:"Undelete" yaml:"Undelete" xml:"undelete,attr"`
-	CompressFile       bool
+	CompressFile       bool `fsAttrShort:"c" fsAttrLong:"Compression_Requested" fsAttrKern:"FS_COMPR_FL" json:"compress" toml:"Compress" yaml:"Compress" xml:"compress,attr"`
-	SyncUpdatechattr   bool
+	SyncUpdate         bool `fsAttrShort:"S" fsAttrLong:"Synchronous_Updates" fsAttrKern:"FS_SYNC_FL" json:"sync" toml:"SyncUpdate" yaml:"Synchronized Update" xml:"syncUpdate,attr"`
-	Immutable          bool
+	Immutable          bool `fsAttrShort:"i" fsAttrLong:"Immutable" fsAttrKern:"FS_IMMUTABLE_FL" json:"immutable" toml:"Immutable" yaml:"Immutable" xml:"immutable,attr"`
-	AppendOnly         bool
+	AppendOnly         bool `fsAttrShort:"a" fsAttrLong:"Append_Only" fsAttrKern:"FS_APPEND_FL" json:"append_only" toml:"AppendOnly" yaml:"Append Only" xml:"appendOnly,attr"`
-	NoDumpFile         bool
+	NoDumpFile         bool `fsAttrShort:"d" fsAttrLong:"No_Dump" fsAttrKern:"FS_NODUMP_FL" json:"no_dump" toml:"NoDump" yaml:"Disable Dumping" xml:"noDump,attr"`
-	NoUpdateAtime      bool
+	NoUpdateAtime      bool `fsAttrShort:"A" fsAttrLong:"No_Atime" fsAttrKern:"FS_NOATIME_FL" json:"no_atime" toml:"DisableAtime" yaml:"Disable Atime Updating" xml:"noAtime,attr"`
-	IsDirty            bool
+	IsDirty            bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_DIRTY_FL" json:"dirty" toml:"Dirty" yaml:"Dirty" xml:"dirty,attr"`
-	CompressedClusters bool
+	CompressedClusters bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_COMPRBLK_FL" json:"compress_clst" toml:"CompressedClusters" yaml:"Compressed Clusters" xml:"compressClst,attr"`
-	NoCompress         bool
+	NoCompress         bool `fsAttrShort:"m" fsAttrLong:"Dont_Compress" fsAttrKern:"FS_NOCOMP_FL" json:"no_compress" toml:"DisableCompression" yaml:"Disable Compression" xml:"noCompress,attr"`
-	EncFile            bool
+	EncFile            bool `fsAttrShort:"E" fsAttrLong:"Encrypted" fsAttrKern:"FS_ENCRYPT_FL" json:"enc" toml:"Encrypted" yaml:"Encrypted" xml:"enc,attr"`
-	BtreeFmt           bool
+	BtreeFmt           bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_BTREE_FL" json:"btree" toml:"Btree" yaml:"Btree" xml:"btree,attr"`
-	HashIdxDir         bool
+	HashIdxDir         bool `fsAttrShort:"I" fsAttrLong:"Indexed_directory" fsAttrKern:"FS_INDEX_FL" json:"idx_dir" toml:"IdxDir" yaml:"Indexed Directory" xml:"idxDir,attr"`
-	AfsDir             bool
+	AfsDir             bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_IMAGIC_FL" json:"afs" toml:"AFS" yaml:"AFS" xml:"afs,attr"`
-	ReservedExt3       bool
+	ReservedExt3       bool `fsAttrShort:"j" fsAttrLong:"Journaled_Data" fsAttrKern:"FS_JOURNAL_DATA_FL" json:"res_ext3" toml:"ReservedExt3" yaml:"Reserved Ext3" xml:"resExt3,attr"`
-	NoMergeTail        bool
+	NoMergeTail        bool `fsAttrShort:"t" fsAttrLong:"No_Tailmerging" fsAttrKern:"FS_NOTAIL_FL" json:"no_merge_tail" toml:"DisableTailmerging" yaml:"Disable Tailmerging" xml:"noMergeTail,attr"`
-	DirSync            bool
+	DirSync            bool `fsAttrShort:"D" fsAttrLong:"Synchronous_Directory_Updates" fsAttrKern:"FS_DIRSYNC_FL" json:"dir_sync" toml:"DirSync" yaml:"Synchronized Directory Updates" xml:"dirSync,attr"`
-	DirTop             bool
+	DirTop             bool `fsAttrShort:"T" fsAttrLong:"Top_of_Directory_Hierarchies" fsAttrKern:"FS_TOPDIR_FL" json:"dir_top" toml:"DirTop" yaml:"Top of Directory Hierarchies" xml:"dirTop,attr"`
-	ReservedExt4a      bool
+	ReservedExt4a      bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_HUGE_FILE_FL" json:"res_ext4a" toml:"ReservedExt4A" yaml:"Reserved Ext4 A" xml:"resExt4a,attr"`
-	Extents            bool
+	Extents            bool `fsAttrShort:"e" fsAttrLong:"Extents" fsAttrKern:"FS_EXTENT_FL" json:"extents" toml:"Extents" yaml:"Extents" xml:"extents,attr"`
-	LargeEaInode       bool
+	VerityProtected    bool `fsAttrShort:"V" fsAttrLong:"Verity" fsAttrKern:"FS_VERITY_FL" json:"verity" toml:"Verity" yaml:"Verity Protected" xml:"verity,attr"`
-	ReservedExt4b      bool
+	LargeEaInode       bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_EA_INODE_FL" json:"ea" toml:"EAInode" yaml:"EA Inode" xml:"ea,attr"`
-	NoCOWFile          bool
+	ReservedExt4b      bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_EOFBLOCKS_FL" json:"res_ext4b" toml:"ReservedExt4B" yaml:"Reserved Ext4 B" xml:"resExt4b,attr"`
-	ReservedExt4c      bool
+	NoCOWFile          bool `fsAttrShort:"C" fsAttrLong:"No_COW" fsAttrKern:"FS_NOCOW_FL" json:"no_cow" toml:"NoCOW" yaml:"Disable COW" xml:"noCOW,attr"`
-	UseParentProjId    bool
+	DAX                bool `fsAttrShort:"x" fsAttrLong:"DAX" fsAttrKern:"FS_DAX_FL" json:"dax" toml:"DAX" yaml:"DAX" xml:"DAX,attr"`
-	ReservedExt2       bool
+	ReservedExt4c      bool `fsAttrShort:"N" fsAttrLong:"Inline_Data" fsAttrKern:"FS_INLINE_DATA_FL" json:"res_ext4c" toml:"ReservedExt4C" yaml:"Reserved Ext4 C" xml:"resExt4c,attr"`
+	UseParentProjId    bool `fsAttrShort:"P" fsAttrLong:"Project_Hierarchy" fsAttrKern:"FS_PROJINHERIT_FL" json:"parent_proj_id" toml:"ParentProjId" yaml:"Use Parent Project ID" xml:"parentProjId,attr"`
+	CaseInsensitive    bool `fsAttrShort:"F" fsAttrLong:"Casefold" fsAttrKern:"FS_CASEFOLD_FL" json:"case_ins" toml:"CaseInsensitive" yaml:"Case Insensitive" xml:"caseIns,attr"`
+	ReservedExt2       bool `fsAttrShort:"-" fsAttrLong:"-" fsAttrKern:"FS_RESERVED_FL" json:"res_ext2" toml:"ReservedExt2" yaml:"Reserved Ext2" xml:"resExt2,attr"`
 }

go.mod

@@ -1,27 +1,13 @@
-module r00t2.io/sysutils/v2
+module r00t2.io/sysutils
 
 go 1.23.2
 
 require (
-	github.com/Luzifer/go-dhparam v1.2.0
 	github.com/davecgh/go-spew v1.1.1
-	github.com/g0rbe/go-chattr v1.0.1
+	github.com/djherbis/times v1.6.0
-	github.com/go-playground/validator/v10 v10.22.0
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
-	golang.org/x/sys v0.19.0
+	golang.org/x/sync v0.9.0
+	golang.org/x/sys v0.26.0
 	honnef.co/go/augeas v0.0.0-20161110001225-ca62e35ed6b8
-	r00t2.io/goutils v1.6.0
+	r00t2.io/goutils v1.7.1
 )
-
-require (
-	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
-	github.com/go-playground/locales v0.14.1 // indirect
-	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/leodido/go-urn v1.4.0 // indirect
-	golang.org/x/crypto v0.19.0 // indirect
-	golang.org/x/net v0.21.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-)
-
-// Pending https://github.com/g0rbe/go-chattr/pull/3
-replace github.com/g0rbe/go-chattr => github.com/johnnybubonic/go-chattr v0.0.0-20240126141003-459f46177b13

go.sum

@@ -1,42 +1,19 @@
-github.com/Luzifer/go-dhparam v1.2.0 h1:YwDf15FTsVriTynCv1qF+1Inh6E8Dg1+28tPEA3pvFo=
-github.com/Luzifer/go-dhparam v1.2.0/go.mod h1:hnazoxBTsXnRvGXAosio70Tb1lWowquyhVdvsXdlIPc=
 github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
+github.com/djherbis/times v1.6.0 h1:w2ctJ92J8fBvWPxugmXIv7Nz7Q3iDMKNx9v5ocVH20c=
-github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/djherbis/times v1.6.0/go.mod h1:gOHeRAz2h+VJNZ5Gmc/o7iD9k4wW7NMVqieYCY99oc0=
-github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
-github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
-github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
-github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
-github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
-github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-playground/validator/v10 v10.22.0 h1:k6HsTZ0sTnROkhS//R0O+55JgM8C4Bx7ia+JlgcnOao=
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paths/consts.go

@@ -0,0 +1,31 @@
+package paths
+
+import (
+	"io/fs"
+)
+
+// Mostly just for reference.
+const (
+	// ModeDir | ModeSymlink | ModeNamedPipe | ModeSocket | ModeDevice | ModeCharDevice | ModeIrregular
+	modeDir              pathMode = pathMode(fs.ModeDir)
+	modeSymlink          pathMode = pathMode(fs.ModeSymlink)
+	modePipe             pathMode = pathMode(fs.ModeNamedPipe)
+	modeSocket           pathMode = pathMode(fs.ModeSocket)
+	modeDev              pathMode = pathMode(fs.ModeDevice)
+	modeCharDev          pathMode = pathMode(fs.ModeCharDevice)
+	modeIrregular        pathMode = pathMode(fs.ModeIrregular)
+	modeAnyExceptRegular pathMode = modeDir | modeSymlink | modePipe | modeSocket | modeDev | modeCharDev | modeIrregular
+)
+
+// Times
+const TimeAny pathTimeType = 0
+const (
+	// TimeAccessed == atime
+	TimeAccessed pathTimeType = 1 << iota
+	// TimeCreated == "birth" time (*NOT* ctime! See TimeChanged)
+	TimeCreated
+	// TimeChanged == ctime
+	TimeChanged
+	// TimeModified == mtime
+	TimeModified
+)

paths/funcs.go

@@ -19,14 +19,24 @@
 package paths
 
 import (
+	`context`
 	"errors"
 	"fmt"
 	"io/fs"
 	"os"
 	"os/user"
 	"path/filepath"
+	`regexp`
+	`slices`
 	"strings"
+	`sync`
+	`time`
+
 	// "syscall"
+
+	`github.com/djherbis/times`
+	`golang.org/x/sync/semaphore`
+	`r00t2.io/goutils/bitmask`
 )
 
 /*
@@ -266,3 +276,324 @@ func RealPathExistsStat(path *string) (exists bool, stat os.FileInfo, err error)
 
 	return
 }
+
+/*
+	SearchPaths gets a file/directory path list based on the provided criteria.
+
+	targetType defines what should be included in the path list.
+	It can consist of one or more (io/)fs.FileMode types OR'd together
+	(ensure they are part of (io/)fs.ModeType).
+	(You can use 0 to match regular files explicitly, and/or noFiles = true to exclude them.)
+
+	noFiles, if true, will explicitly filter out regular files from the path results.
+	(Normally they are *always* included regardless of targetType.)
+
+	basePtrn may be nil; if it isn't, it will be applied to *base names*
+	(that is, quux.txt rather than /foo/bar/baz/quux.txt).
+
+	pathPtrn is like basePtrn except it applies to the *entire* path,
+	not just the basename, if not nil (e.g. /foo/bar/baz/quux.txt,
+	not just quux.txt).
+
+	If age is not nil, it will be applied to the path object.
+	It will match older files/directories/etc. if olderThan is true,
+	otherwise it will match newer files/directories/etc.
+	(olderThan is not used otherwise.)
+
+	ageType is one or more Time* constants OR'd together to describe which timestamp type to check.
+	(Note that TimeCreated may not match if specified as it is only available on certain OSes,
+	kernel versions, and filesystems. This may lead to files being excluded that may have otherwise
+	been included.)
+	(You can use TimeAny to specify any supported time.)
+	*Any* matching timestamp of all specified (and supported) timestamp types matches,
+	so be judicious with your selection. They are processed in order of:
+
+		* btime (birth/creation time) (if supported)
+		* mtime (modification time -- contents have changed)
+		* ctime (OS-specific behavior; generally disk metadata has changed) (if supported)
+		* atime (access time)
+
+	olderThan (as mentioned above) will find paths *older* than age if true, otherwise *newer*.
+
+	now, if not nil, will be used to compare the age of files. (If nil, it will be populated at time of call.)
+*/
+func SearchFsPaths(
+	root string,
+	targetType fs.FileMode, noFiles bool,
+	basePtrn, pathPtrn *regexp.Regexp,
+	age *time.Duration, ageType pathTimeType, olderThan bool, now *time.Time,
+) (foundPaths []string, err error) {
+
+	if age != nil {
+		if now == nil {
+			now = new(time.Time)
+			*now = time.Now()
+		}
+	}
+
+	if err = RealPath(&root); err != nil {
+		return
+	}
+
+	if err = filepath.WalkDir(
+		root,
+		func(path string, d fs.DirEntry, inErr error) (outErr error) {
+
+			var include bool
+
+			if inErr != nil {
+				outErr = inErr
+				return
+			}
+
+			if include, outErr = filterPath(
+				path, d,
+				targetType, noFiles,
+				basePtrn, pathPtrn,
+				age, ageType, olderThan, now,
+			); outErr != nil {
+				return
+			}
+
+			if include {
+				foundPaths = append(foundPaths, path)
+			}
+
+			return
+		},
+	); err != nil {
+		return
+	}
+
+	// And sort them.
+	slices.Sort(foundPaths)
+
+	return
+}
+
+/*
+	SearchFsPathsAsync is exactly like SearchFsPaths, but dispatches off concurrent
+	workers for the filtering logic instead of performing iteratively/recursively.
+	It may, in some cases, be *slightly more* performant and *slightly less* in others.
+	Additional options are documented below.
+	Note that unlike SearchFsPaths, the results written to foundPathsChan are not
+	guaranteed to be in any predictable order.
+
+	All channels are expected to have been initialized by the caller ahead of time,
+	and all provided channels will be closed upon completion (so they are only safe
+	to READ from after invoking SearchFsPathsAsync).
+
+	foundPathsChan is a channel to which matched filepaths will be written.
+
+	sem/semCtx are optional; if not nil, they can be used to limit/"batch" concurrent tasks.
+	(semCtx is the context.Context used for sem when acquiring. It may be nil;
+	one will be locally created if so.)
+	The default will be to spawn all filtering logic concurrently.
+	For very large directories, you almost assuredly do not want that -- it
+	can cause a significant amount of I/O and CPU wait.
+	(See https://pkg.go.dev/golang.org/x/sync/semaphore for details.)
+
+	wg *must not* be nil, and must be managed by the caller.
+	SearchFsPathsAsync will exit with no errors but no-op if wg is nil.
+
+	errChan will receive any/all encountered errors.
+*/
+func SearchFsPathsAsync(
+	root string,
+	targetType fs.FileMode, noFiles bool,
+	basePtrn, pathPtrn *regexp.Regexp,
+	age *time.Duration, ageType pathTimeType, olderThan bool, now *time.Time,
+	foundPathsChan chan string,
+	sem *semaphore.Weighted, semCtx context.Context,
+	wg *sync.WaitGroup,
+	errChan chan error,
+) {
+
+	var err error
+	var localWg sync.WaitGroup
+
+	if wg == nil {
+		return
+	}
+
+	if age != nil {
+		if now == nil {
+			now = new(time.Time)
+			*now = time.Now()
+		}
+	}
+
+	if sem != nil && semCtx == nil {
+		semCtx = context.Background()
+	}
+
+	if err = filepath.WalkDir(
+		root,
+		func(path string, de fs.DirEntry, inErr error) (outErr error) {
+			localWg.Add(1)
+			wg.Add(1)
+			if sem != nil {
+				if err = sem.Acquire(semCtx, 1); err != nil {
+					return
+				}
+			}
+
+			go func(p string, d fs.DirEntry) {
+				var pErr error
+				var pInclude bool
+
+				defer localWg.Done()
+				defer wg.Done()
+
+				if sem != nil {
+					defer sem.Release(1)
+				}
+
+				if pInclude, pErr = filterPath(p, d, targetType, noFiles, basePtrn, pathPtrn, age, ageType, olderThan, now); pErr != nil {
+					errChan <- pErr
+					return
+				}
+
+				if pInclude {
+					foundPathsChan <- p
+				}
+			}(path, de)
+
+			return
+		},
+	); err != nil {
+		errChan <- err
+		return
+	}
+
+	go func() {
+		localWg.Wait()
+		close(foundPathsChan)
+		close(errChan)
+	}()
+
+	return
+}
+
+// filterPath applies the filter logic used by SearchFSPaths and SearchFsPathsAync.
+func filterPath(
+	path string, d fs.DirEntry,
+	targetType fs.FileMode, noFiles bool,
+	basePtrn, pathPtrn *regexp.Regexp,
+	age *time.Duration, ageType pathTimeType, olderThan bool, now *time.Time,
+) (include bool, err error) {
+
+	var typeMode fs.FileMode
+	var fi fs.FileInfo
+	var tspec times.Timespec
+	var typeFilter *bitmask.MaskBit = bitmask.NewMaskBitExplicit(uint(targetType))
+
+	if age != nil {
+		if now == nil {
+			now = new(time.Time)
+			*now = time.Now()
+		}
+	}
+
+	// patterns
+	if pathPtrn != nil {
+		if !pathPtrn.MatchString(path) {
+			return
+		}
+	}
+	if basePtrn != nil {
+		if !basePtrn.MatchString(filepath.Base(path)) {
+			return
+		}
+	}
+
+	// age
+	if age != nil {
+		if tspec, err = times.Stat(path); err != nil {
+			return
+		}
+		if !filterTimes(tspec, age, &ageType, olderThan, now) {
+			return
+		}
+	}
+
+	// fs object type (file, dir, etc.)
+	if fi, err = d.Info(); err != nil {
+		return
+	}
+	typeMode = fi.Mode().Type()
+	if typeMode == 0 && noFiles {
+		return
+	} else if typeMode != 0 {
+		if !typeFilter.HasFlag(bitmask.MaskBit(typeMode)) {
+			return
+		}
+	}
+
+	include = true
+
+	return
+}
+
+/*
+	filterTimes checks a times.Timespec of a file using:
+		* an age specified by the caller
+		* an ageType bitmask for types of times to compare
+		* an olderThan bool (if false, the file must be younger than)
+		* an optional "now" timestamp for the age derivation.
+*/
+func filterTimes(tspec times.Timespec, age *time.Duration, ageType *pathTimeType, olderThan bool, now *time.Time) (include bool) {
+
+	var curAge time.Duration
+	var mask *bitmask.MaskBit
+	var tfunc func(t *time.Duration) (match bool) = func(t *time.Duration) (match bool) {
+		if olderThan {
+			match = *t > *age
+		} else {
+			match = *t < *age
+		}
+		return
+	}
+
+	if tspec == nil || age == nil || ageType == nil {
+		return
+	}
+
+	mask = ageType.Mask()
+
+	if now == nil {
+		now = new(time.Time)
+		*now = time.Now()
+	}
+
+	// BTIME (if supported)
+	if tspec.HasBirthTime() && (mask.HasFlag(bitmask.MaskBit(TimeAny)) || mask.HasFlag(bitmask.MaskBit(TimeCreated))) {
+		curAge = now.Sub(tspec.BirthTime())
+		if include = tfunc(&curAge); include {
+			return
+		}
+	}
+	// MTIME
+	if mask.HasFlag(bitmask.MaskBit(TimeAny)) || mask.HasFlag(bitmask.MaskBit(TimeModified)) {
+		curAge = now.Sub(tspec.ModTime())
+		if include = tfunc(&curAge); include {
+			return
+		}
+	}
+	// CTIME (if supported)
+	if tspec.HasChangeTime() && (mask.HasFlag(bitmask.MaskBit(TimeAny)) || mask.HasFlag(bitmask.MaskBit(TimeChanged))) {
+		curAge = now.Sub(tspec.ChangeTime())
+		if include = tfunc(&curAge); include {
+			return
+		}
+	}
+	// ATIME
+	if mask.HasFlag(bitmask.MaskBit(TimeAny)) || mask.HasFlag(bitmask.MaskBit(TimeAccessed)) {
+		curAge = now.Sub(tspec.AccessTime())
+		if include = tfunc(&curAge); include {
+			return
+		}
+	}
+
+	return
+}

paths/funcs_pathtimetype.go

@@ -0,0 +1,13 @@
+package paths
+
+import (
+	`r00t2.io/goutils/bitmask`
+)
+
+// Mask returns a bitmask.MaskBit from a pathTimeType.
+func (p *pathTimeType) Mask() (mask *bitmask.MaskBit) {
+
+	mask = bitmask.NewMaskBitExplicit(uint(*p))
+
+	return
+}

paths/types.go

@@ -0,0 +1,9 @@
+package paths
+
+import (
+	`r00t2.io/goutils/bitmask`
+)
+
+type pathMode bitmask.MaskBit
+
+type pathTimeType bitmask.MaskBit