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How to use populateDir method of main Package

Best Syzkaller code snippet using main.populateDir

imagegen.go

Source:imagegen.go

...506	if err != nil {507		tool.Fail(err)508	}509	defer os.RemoveAll(templateDir)510	if err := populateDir(templateDir); err != nil {511		tool.Fail(err)512	}513	shutdown := make(chan struct{})514	osutil.HandleInterrupts(shutdown)515	procs := runtime.NumCPU()516	requests := make(chan *Image, procs)517	go func() {518		for _, image := range images {519			image.templateDir = templateDir520			requests <- image521		}522		close(requests)523	}()524	for p := 0; p < procs; p++ {525		go func() {526			for image := range requests {527				select {528				case <-shutdown:529					image.done <- errShutdown530				default:531					image.done <- image.generate()532				}533			}534		}()535	}536	printResults(images, shutdown, *flagKeepImage, *flagVerbose)537}538func printResults(images []*Image, shutdown chan struct{}, keepImage, verbose bool) {539	good, failed := 0, 0540	hashes := make(map[uint32][]*Image)541	for _, image := range images {542		err := <-image.done543		if image.disk != "" && !keepImage {544			os.Remove(image.disk)545		}546		select {547		case <-shutdown:548			err = errShutdown549		default:550		}551		if err == errShutdown {552			continue553		}554		size := fmt.Sprintf("%vKB", image.size>>10)555		if image.size >= 1<<20 {556			size = fmt.Sprintf("%vMB", image.size>>20)557		}558		res := "ok"559		if err != nil {560			res = fmt.Sprintf("failed:\n\t%v", err)561		}562		if verbose || err != nil {563			fmt.Printf("#%02v: mkfs.%v[%5v] %v: %v\n", image.index, image.fs.Name, size, image.flags, res)564		}565		if err != nil {566			failed++567			continue568		}569		hashes[image.hash] = append(hashes[image.hash], image)570		good++571	}572	fmt.Printf("generated images: %v/%v\n", good, len(images))573	for _, image := range images {574		group := hashes[image.hash]575		if len(group) <= 1 {576			continue577		}578		delete(hashes, image.hash)579		fmt.Printf("equal images:\n")580		for _, image := range group {581			fmt.Printf("\tmkfs.%v %v\n", image.fs.Name, image.flags)582		}583	}584	if failed != 0 {585		os.Exit(1)586	}587}588func generateImages(target *prog.Target, flagFS string, list bool) ([]*Image, error) {589	var images []*Image590	for _, fs := range fileSystems {591		if flagFS != "" && flagFS != fs.Name {592			continue593		}594		index := 0595		enumerateFlags(target, &images, &index, fs, fs.MkfsFlags, 0)596		if list {597			fmt.Printf("%v [%v images]\n", fs.Name, index)598			continue599		}600		files, err := filepath.Glob(filepath.Join("sys", targets.Linux, "test", "syz_mount_image_"+fs.Name+"_*"))601		if err != nil {602			return nil, fmt.Errorf("error reading output dir: %v", err)603		}604		for _, file := range files {605			if err := os.Remove(file); err != nil {606				return nil, fmt.Errorf("error removing output file: %v", err)607			}608		}609	}610	return images, nil611}612func enumerateFlags(target *prog.Target, images *[]*Image, index *int, fs FileSystem, flags []string, flagsIndex int) {613	if flagsIndex == len(fs.MkfsFlagCombinations) {614		*images = append(*images, &Image{615			target: target,616			fs:     fs,617			flags:  append([]string{}, flags...),618			index:  *index,619			done:   make(chan error, 1),620		})621		*index++622		return623	}624	for _, flag := range fs.MkfsFlagCombinations[flagsIndex] {625		flags1 := flags626		for _, f := range strings.Split(flag, " ") {627			if f != "" {628				flags1 = append(flags1, f)629			}630		}631		enumerateFlags(target, images, index, fs, flags1, flagsIndex+1)632	}633}634func (image *Image) generate() error {635	var err error636	for image.size = image.fs.MinSize; image.size <= 128<<20; image.size *= 2 {637		if err = image.generateSize(); err == nil {638			return nil639		}640	}641	return err642}643func (image *Image) generateSize() error {644	outFile := filepath.Join("sys", targets.Linux, "test",645		fmt.Sprintf("syz_mount_image_%v_%v", image.fs.Name, image.index))646	image.disk = outFile + ".img"647	f, err := os.Create(image.disk)648	if err != nil {649		return err650	}651	f.Close()652	if err := os.Truncate(image.disk, int64(image.size)); err != nil {653		return err654	}655	if image.fs.Mkfs == nil {656		if _, err := runCmd("mkfs."+image.fs.Name, append(image.flags, image.disk)...); err != nil {657			return err658		}659	} else {660		if err := image.fs.Mkfs(image); err != nil {661			return err662		}663	}664	if !image.fs.ReadOnly {665		// This does not work with runCmd -- sudo does not show password prompt on console.666		cmd := exec.Command("sudo", os.Args[0], "-populate", image.disk, "-fs", image.fs.Name)667		if out, err := cmd.CombinedOutput(); err != nil {668			return fmt.Errorf("image population failed: %v\n%s", err, out)669		}670	}671	data, err := ioutil.ReadFile(image.disk)672	if err != nil {673		return err674	}675	image.hash = crc32.ChecksumIEEE(data)676	out, err := writeImage(image.fs, data)677	if err != nil {678		return err679	}680	p, err := image.target.Deserialize(out, prog.Strict)681	if err != nil {682		return fmt.Errorf("failed to deserialize resulting program: %v", err)683	}684	exec := make([]byte, prog.ExecBufferSize)685	if _, err := p.SerializeForExec(exec); err != nil {686		return fmt.Errorf("failed to serialize for execution: %v", err)687	}688	return osutil.WriteFile(outFile, out)689}690// Runs under sudo in a subprocess.691func populate(disk, fs string) error {692	output, err := runCmd("losetup", "-f", "--show", "-P", disk)693	if err != nil {694		return err695	}696	loop := strings.TrimSpace(string(output))697	defer runCmd("losetup", "-d", loop)698	dir, err := ioutil.TempDir("", "syz-imagegen")699	if err != nil {700		return err701	}702	defer os.RemoveAll(dir)703	if _, err := runCmd("mount", "-t", fs, loop, dir); err != nil {704		return fmt.Errorf("%v\n%s", err, output)705	}706	defer runCmd("umount", dir)707	return populateDir(dir)708}709func populateDir(dir string) error {710	zeros := func(size int) []byte {711		return make([]byte, size)712	}713	nonzeros := func(size int) []byte {714		const fill = "syzkaller"715		return bytes.Repeat([]byte(fill), size/len(fill)+1)[:size]716	}717	if err := os.Mkdir(filepath.Join(dir, "file0"), 0777); err != nil {718		return err719	}720	if err := ioutil.WriteFile(filepath.Join(dir, "file0", "file0"), nonzeros(1050), 0777); err != nil {721		return err722	}723	os.Symlink(filepath.Join(dir, "file0", "file0"), filepath.Join(dir, "file0", "file1"))...

oxfstool.go

Source:oxfstool.go

...70		}71	}72	return kind, size, err73}74func populateDir(fileSet []string, files map[string]ofile, n int) *dirTree {75	var dT dirTree76	c := len(fileSet)77	if c > n {78		sz := c / (n + 1)79		fmt.Println("sz:", sz)80		dT.Name = make([]string, n)81		dT.P = make([]*dirTree, n)82		dT.P0 = populateDir(fileSet[0:sz], files, n)83		for i := 1; i <= n; i++ {84			e := i * sz85			dT.Name[i-1] = fileSet[e]86			z := (i + 1) * sz87			if i == n {88				z = c89			}90			dT.P[i-1] = populateDir(fileSet[e+1:z], files, n)91		}92	} else {93		dT.Name = make([]string, c)94		dT.P = make([]*dirTree, c)95		for e := 0; e < c; e++ {96			dT.Name[e] = fileSet[e]97		}98	}99	return &dT100}101func produceFileData(f *os.File, outfmt int, thisSector int, data []byte) (_ int, _ int, err error) {102	sectorsize := 1024103	if outfmt == EXTENDED || outfmt == PADDEDEXTENDED {104		sectorsize = 4096105	}106	if outfmt == ORIGINAL || outfmt == EXTENDED {107		_, err = f.Seek(((int64(thisSector)/29)-1)*int64(sectorsize), 0)108	} else {109		_, err = f.Seek(PADOFFSET+((int64(thisSector)/29)*int64(sectorsize))-1, 0)110	}111	if err == nil {112		_, err = f.Write(data)113	}114	return thisSector, thisSector + 29, err115}116func produceIndirectBlock(f *os.File, ib *iblock, outfmt int) (err error) {117	if outfmt == ORIGINAL {118		_, err = f.Seek((int64(ib.A/29)-1)*1024, 0)119	} else {120		_, err = f.Seek(PADOFFSET+((int64(ib.A/29))*1024)-1, 0)121	}122	if err == nil {123		err = binary.Write(f, binary.LittleEndian, ib.E)124	}125	return err126}127func produceXIndirectBlock(f *os.File, xb *xblock, outfmt int) (err error) {128	if outfmt == EXTENDED {129		_, err = f.Seek((int64(xb.A/29)-1)*4096, 0)130	} else {131		_, err = f.Seek(PADOFFSET+((int64(xb.A/29))*4096)-1, 0)132	}133	if err == nil {134		err = binary.Write(f, binary.LittleEndian, xb.E)135	}136	return err137}138func produceFile(f *os.File, e ofile, name string, outfmt int, thisSector int, iFHP int, FHPp *oxfsgo.OXFS_HeaderPage) (_ int, _ int, _ int, _ int, err error) {139	nextFree := thisSector140	cFHP := iFHP141	FHPpBmap := 0142	if outfmt == ORIGINAL || outfmt == PADDEDORIGINAL {143		nextFree = thisSector + 29144		var hdrPage oxfsgo.OBFS_FileHeader145		fillsize := 1024 - oxfsgo.OBFS_HeaderSize146		hdrPage.Mark = oxfsgo.OBFS_HeaderMark147		hdrPage.Aleng = int32(len(e.Data)+oxfsgo.OBFS_HeaderSize) / 1024148		hdrPage.Bleng = int32(len(e.Data)+oxfsgo.OBFS_HeaderSize) % 1024149		for x, ch := range []byte(name) {150			hdrPage.Name[x] = ch151		}152		if len(e.Data) >= 1024-oxfsgo.OBFS_HeaderSize {153			copy(hdrPage.Fill[0:fillsize], e.Data[0:fillsize])154		} else {155			copy(hdrPage.Fill[0:len(e.Data)], e.Data[:])156		}157		hdrPage.Sec[0] = oxfsgo.OBFS_DiskAdr(thisSector)158		var ib iblock159		indirectUsed := false160		for n := 1; n <= int(hdrPage.Aleng); n++ {161			var dAdr int162			thisstart := fillsize + ((n - 1) * 1024)163			thisend := thisstart + 1024164			if thisend > len(e.Data) {165				thisend = len(e.Data)166			}167			dAdr, nextFree, err = produceFileData(f, outfmt, nextFree, e.Data[thisstart:thisend])168			if n < oxfsgo.OBFS_SecTabSize {169				hdrPage.Sec[n] = oxfsgo.OBFS_DiskAdr(dAdr)170			} else if ((n - oxfsgo.OBFS_SecTabSize) / 256) < oxfsgo.OBFS_ExTabSize {171				ni := n - oxfsgo.OBFS_SecTabSize172				if ni%256 == 0 {173					if indirectUsed {174						_ = produceIndirectBlock(f, &ib, outfmt)175					}176					indirectUsed = true177					hdrPage.Ext[ni/256] = oxfsgo.OBFS_DiskAdr(nextFree)178					ib.A = int64(nextFree)179					nextFree = nextFree + 29180				}181				ib.E[ni%256] = uint32(dAdr)182			} else {183				// silently truncate file that is too large184			}185		}186		if indirectUsed {187			_ = produceIndirectBlock(f, &ib, outfmt)188		}189		if outfmt == ORIGINAL {190			_, err = f.Seek((int64(thisSector/29)-1)*1024, 0)191		} else {192			_, err = f.Seek(PADOFFSET+((int64(thisSector/29))*1024)-1, 0)193		}194		if err == nil {195			err = binary.Write(f, binary.LittleEndian, hdrPage)196		}197	} else {198		if FHPp.Mark == 0 {199			FHPp.Mark = oxfsgo.OXFS_HeaderMark200			FHPp.Next = 0201			FHPp.Bmap = 0202			for i := 0; i < oxfsgo.OXFS_HdrPgSize; i++ {203				FHPp.Headers[i].Type = 4294967295 // empty slot204			}205		} else {206			FHPp.Bmap = FHPp.Bmap + 1207			if FHPp.Bmap == 63 {208				FHPp.Bmap = 0xFFFFFFFFFFFFFFFF209				if outfmt == EXTENDED {210					_, err = f.Seek((int64(cFHP/29)-1)*4096, 0)211				} else {212					_, err = f.Seek(PADOFFSET+((int64(cFHP/29))*4096)-1, 0)213				}214				if err == nil {215					err = binary.Write(f, binary.LittleEndian, *FHPp)216				}217				cFHP = nextFree218				nextFree = thisSector + 29219				FHPp.Bmap = 0220				for i := 0; i < oxfsgo.OXFS_HdrPgSize; i++ {221					FHPp.Headers[i].Type = 4294967295 // empty slot222				}223			}224		}225		FHPp.Headers[FHPp.Bmap].Type = 0 // regular file226		FHPp.Headers[FHPp.Bmap].Perm = 0227		FHPp.Headers[FHPp.Bmap].Date = 0228		FHPp.Headers[FHPp.Bmap].Length = uint64(len(e.Data))229		fmt.Println(" size ", FHPp.Headers[FHPp.Bmap].Length)230		FHPp.Headers[FHPp.Bmap].Owner = 0231		FHPp.Headers[FHPp.Bmap].Group = 0232		var xb xblock233		indirectUsed := false234		for n := 0; n <= len(e.Data)/4096; n++ {235			var dAdr int236			thisstart := n * 4096237			thisend := thisstart + 4096238			if thisend > len(e.Data) {239				thisend = len(e.Data)240			}241			dAdr, nextFree, err = produceFileData(f, outfmt, nextFree, e.Data[thisstart:thisend])242			if n < 3 {243				FHPp.Headers[FHPp.Bmap].Tab[n] = oxfsgo.OXFS_DiskAdr(dAdr)244			} else if ((n - 3) / 512) < 511 {245				ni := (n - 3) / 512246				if ni%512 == 0 {247					if indirectUsed {248						_ = produceXIndirectBlock(f, &xb, outfmt)249					}250					indirectUsed = true251					FHPp.Headers[FHPp.Bmap].Tab[3] = oxfsgo.OXFS_DiskAdr(nextFree)252					xb.A = int64(nextFree)253					nextFree = nextFree + 29254				}255				xb.E[ni%512] = uint64(dAdr)256			} else {257				// silently truncate file that is too large258			}259		}260		if indirectUsed {261			_ = produceXIndirectBlock(f, &xb, outfmt)262		}263		if outfmt == EXTENDED {264			_, err = f.Seek((int64(cFHP/29)-1)*4096, 0)265		} else {266			_, err = f.Seek(PADOFFSET+((int64(cFHP/29))*4096)-1, 0)267		}268		if err == nil {269			err = binary.Write(f, binary.LittleEndian, *FHPp)270		}271		FHPpBmap = int(FHPp.Bmap)272	}273	fmt.Println("producing file ", name)274	return thisSector, FHPpBmap, nextFree, cFHP, err275}276func produceDir(f *os.File, dT *dirTree, files map[string]ofile, outfmt int, thisSector int, iFHP int, FHPp *oxfsgo.OXFS_HeaderPage) (_ int, _ int, _ int, err error) {277	var storedAt, storedIdx int278	nextFree := thisSector + 29279	if nextFree < 65*29 {280		nextFree = 65 * 29281	}282	cFHP := iFHP283	if cFHP == 0 {284		cFHP = nextFree285		nextFree = nextFree + 29286	}287	if outfmt == ORIGINAL || outfmt == PADDEDORIGINAL {288		var dirPage oxfsgo.OBFS_DirPage289		dirPage.Mark = oxfsgo.OBFS_DirMark290		dirPage.M = int32(len(dT.Name))291		if dT.P0 != nil {292			storedAt, nextFree, _, err = produceDir(f, dT.P0, files, outfmt, nextFree, -1, FHPp)293			dirPage.P0 = oxfsgo.OBFS_DiskAdr(storedAt)294		}295		for i, _ := range dT.P {296			for x, ch := range []byte(dT.Name[i]) {297				dirPage.E[i].Name[x] = ch298			}299			storedAt, _, nextFree, _, err = produceFile(f, files[dT.Name[i]], dT.Name[i], outfmt, nextFree, -1, FHPp)300			dirPage.E[i].Adr = oxfsgo.OBFS_DiskAdr(storedAt)301			if dT.P[i] != nil {302				storedAt, nextFree, _, err = produceDir(f, dT.P[i], files, outfmt, nextFree, -1, FHPp)303				dirPage.E[i].P = oxfsgo.OBFS_DiskAdr(storedAt)304			}305		}306		if outfmt == ORIGINAL {307			_, err = f.Seek((int64(thisSector/29)-1)*1024, 0)308		} else {309			_, err = f.Seek(PADOFFSET+((int64(thisSector/29))*1024)-1, 0)310		}311		if err == nil {312			err = binary.Write(f, binary.LittleEndian, dirPage)313		}314	} else {315		var dirPage oxfsgo.OXFS_DirPage316		dirPage.Mark = oxfsgo.OXFS_DirMark317		dirPage.M = int64(len(dT.Name))318		if dT.P0 != nil {319			storedAt, nextFree, cFHP, err = produceDir(f, dT.P0, files, outfmt, nextFree, cFHP, FHPp)320			dirPage.P0 = oxfsgo.OXFS_DiskAdr(storedAt)321		}322		for i, _ := range dT.P {323			for x, ch := range []byte(dT.Name[i]) {324				dirPage.E[i].Name[x] = ch325			}326			fmt.Print(" producing ", dT.Name[i])327			_, storedIdx, nextFree, cFHP, err = produceFile(f, files[dT.Name[i]], dT.Name[i], outfmt, nextFree, cFHP, FHPp)328			dirPage.E[i].Adr = oxfsgo.OXFS_DiskAdr(cFHP)329			dirPage.E[i].I = byte(storedIdx)330			if dT.P[i] != nil {331				storedAt, nextFree, cFHP, err = produceDir(f, dT.P[i], files, outfmt, nextFree, cFHP, FHPp)332				dirPage.E[i].P = oxfsgo.OXFS_DiskAdr(storedAt)333			}334		}335		if outfmt == EXTENDED {336			_, err = f.Seek((int64(thisSector/29)-1)*4096, 0)337		} else {338			_, err = f.Seek(PADOFFSET+((int64(thisSector/29))*4096)-1, 0)339		}340		if err == nil {341			err = binary.Write(f, binary.LittleEndian, dirPage)342			fmt.Println("dirpage")343			for i := 0; i < int(dirPage.M); i++ {344				fmt.Println(" ", dirPage.E[i].Name, dirPage.E[i].Adr, dirPage.E[i].I, dirPage.E[i].P)345			}346		}347	}348	return thisSector, nextFree, cFHP, err349}350func installBootImage(f *os.File, bootImage []byte, outfmt int) (err error) {351	var i int352	var ssz int64353	if outfmt == EXTENDED || outfmt == PADDEDEXTENDED {354		ssz = 4096355	} else {356		ssz = 1024357	}358	if outfmt == ORIGINAL || outfmt == EXTENDED {359		_, err = f.Seek(ssz, 0)360	} else {361		_, err = f.Seek(PADOFFSET+ssz, 0)362	}363	if err == nil {364		i, err = f.Write(bootImage)365		fmt.Println("boot image bytes written:", i)366	}367	return err368}369func produceDirTree(files map[string]ofile, outfmt int, fw *os.File) (err error) {370	var nA []string371	var FHP oxfsgo.OXFS_HeaderPage372	var FHPp *oxfsgo.OXFS_HeaderPage373	nE := len(files)374	if _, ok := files["_BOOTIMAGE_"]; ok {375		nE = len(files) - 1376		_ = installBootImage(fw, files["_BOOTIMAGE_"].Data, outfmt)377	}378	if err == nil {379		nA = make([]string, nE)380		i := 0381		for fn, _ := range files {382			if fn != "_BOOTIMAGE_" {383				nA[i] = fn384				i++385			}386		}387		rnA := nA[:]388		sort.Strings(rnA)389		dsz := oxfsgo.OBFS_N + (oxfsgo.OBFS_N / 2)390		cFHP := -1391		if outfmt == EXTENDED || outfmt == PADDEDEXTENDED {392			dsz = oxfsgo.OXFS_N + (oxfsgo.OXFS_N / 2)393			cFHP = 0394			FHPp = &FHP395			FHPp.Mark = 0396			FHPp.Next = 0397		}398		dT := populateDir(rnA[:], files, dsz)399		_, _, _, err = produceDir(fw, dT, files, outfmt, 29, cFHP, FHPp)400	}401	return err402}403func producefs(name string, files map[string]ofile, outfmt int, force bool, osize int64, size string) (err error) {404	var fi *os.File405	keys := make([]string, 0, len(files))406	for k := range files {407		keys = append(keys, k)408	}409	sort.Strings(keys)410	if outfmt != LOCALFILES {411		if size == "same" && osize == 0 {412			err = fmt.Errorf("cannot use destination disk image size 'same' if source is files")...

cmd_auto_import_test.go

Source:cmd_auto_import_test.go

1// -*- Mode: Go; indent-tabs-mode: t -*-2/*3 * Copyright (C) 2016 Canonical Ltd4 *5 * This program is free software: you can redistribute it and/or modify6 * it under the terms of the GNU General Public License version 3 as7 * published by the Free Software Foundation.8 *9 * This program is distributed in the hope that it will be useful,10 * but WITHOUT ANY WARRANTY; without even the implied warranty of11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12 * GNU General Public License for more details.13 *14 * You should have received a copy of the GNU General Public License15 * along with this program.  If not, see <http://www.gnu.org/licenses/>.16 *17 */18package main_test19import (20	"fmt"21	"io/ioutil"22	"net/http"23	"os"24	"path/filepath"25	. "gopkg.in/check.v1"26	"github.com/snapcore/snapd/boot"27	snap "github.com/snapcore/snapd/cmd/snap"28	"github.com/snapcore/snapd/dirs"29	"github.com/snapcore/snapd/logger"30	"github.com/snapcore/snapd/osutil"31	"github.com/snapcore/snapd/release"32	"github.com/snapcore/snapd/snap/snaptest"33	"github.com/snapcore/snapd/testutil"34)35func makeMockMountInfo(c *C, content string) string {36	fn := filepath.Join(c.MkDir(), "mountinfo")37	err := ioutil.WriteFile(fn, []byte(content), 0644)38	c.Assert(err, IsNil)39	return fn40}41func (s *SnapSuite) TestAutoImportAssertsHappy(c *C) {42	restore := release.MockOnClassic(false)43	defer restore()44	fakeAssertData := []byte("my-assertion")45	n := 046	total := 247	s.RedirectClientToTestServer(func(w http.ResponseWriter, r *http.Request) {48		switch n {49		case 0:50			c.Check(r.Method, Equals, "POST")51			c.Check(r.URL.Path, Equals, "/v2/assertions")52			postData, err := ioutil.ReadAll(r.Body)53			c.Assert(err, IsNil)54			c.Check(postData, DeepEquals, fakeAssertData)55			fmt.Fprintln(w, `{"type": "sync", "result": {"ready": true, "status": "Done"}}`)56			n++57		case 1:58			c.Check(r.Method, Equals, "POST")59			c.Check(r.URL.Path, Equals, "/v2/users")60			postData, err := ioutil.ReadAll(r.Body)61			c.Assert(err, IsNil)62			c.Check(string(postData), Equals, `{"action":"create","sudoer":true,"known":true}`)63			fmt.Fprintln(w, `{"type": "sync", "result": [{"username": "foo"}]}`)64			n++65		default:66			c.Fatalf("unexpected request: %v (expected %d got %d)", r, total, n)67		}68	})69	fakeAssertsFn := filepath.Join(c.MkDir(), "auto-import.assert")70	err := ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)71	c.Assert(err, IsNil)72	mockMountInfoFmt := `7324 0 8:18 / %s rw,relatime shared:1 - ext4 /dev/sdb2 rw,errors=remount-ro,data=ordered`74	content := fmt.Sprintf(mockMountInfoFmt, filepath.Dir(fakeAssertsFn))75	restore = snap.MockMountInfoPath(makeMockMountInfo(c, content))76	defer restore()77	logbuf, restore := logger.MockLogger()78	defer restore()79	rest, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})80	c.Assert(err, IsNil)81	c.Assert(rest, DeepEquals, []string{})82	c.Check(s.Stdout(), Equals, `created user "foo"`+"\n")83	// matches because we may get a:84	//   "WARNING: cannot create syslog logger\n"85	// in the output86	c.Check(logbuf.String(), Matches, fmt.Sprintf("(?ms).*imported %s\n", fakeAssertsFn))87	c.Check(n, Equals, total)88}89func (s *SnapSuite) TestAutoImportAssertsNotImportedFromLoop(c *C) {90	restore := release.MockOnClassic(false)91	defer restore()92	fakeAssertData := []byte("bad-assertion")93	s.RedirectClientToTestServer(func(w http.ResponseWriter, r *http.Request) {94		// assertion is ignored, nothing is posted to this endpoint95		panic("not reached")96	})97	fakeAssertsFn := filepath.Join(c.MkDir(), "auto-import.assert")98	err := ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)99	c.Assert(err, IsNil)100	mockMountInfoFmtWithLoop := `10124 0 8:18 / %s rw,relatime shared:1 - squashfs /dev/loop1 rw,errors=remount-ro,data=ordered`102	content := fmt.Sprintf(mockMountInfoFmtWithLoop, filepath.Dir(fakeAssertsFn))103	restore = snap.MockMountInfoPath(makeMockMountInfo(c, content))104	defer restore()105	rest, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})106	c.Assert(err, IsNil)107	c.Assert(rest, DeepEquals, []string{})108	c.Check(s.Stdout(), Equals, "")109	c.Check(s.Stderr(), Equals, "")110}111func (s *SnapSuite) TestAutoImportCandidatesHappy(c *C) {112	dirs := make([]string, 4)113	args := make([]interface{}, len(dirs))114	files := make([]string, len(dirs))115	for i := range dirs {116		dirs[i] = c.MkDir()117		args[i] = dirs[i]118		files[i] = filepath.Join(dirs[i], "auto-import.assert")119		err := ioutil.WriteFile(files[i], nil, 0644)120		c.Assert(err, IsNil)121	}122	mockMountInfoFmtWithLoop := `123too short12424 0 8:18 / %[1]s rw,relatime foo ext3 /dev/meep2 no,separator12524 0 8:18 / %[2]s rw,relatime - ext3 /dev/meep2 rw,errors=remount-ro,data=ordered12624 0 8:18 / %[3]s rw,relatime opt:1 - ext4 /dev/meep3 rw,errors=remount-ro,data=ordered12724 0 8:18 / %[4]s rw,relatime opt:1 opt:2 - ext2 /dev/meep1 rw,errors=remount-ro,data=ordered128`129	content := fmt.Sprintf(mockMountInfoFmtWithLoop, args...)130	restore := snap.MockMountInfoPath(makeMockMountInfo(c, content))131	defer restore()132	l, err := snap.AutoImportCandidates()133	c.Check(err, IsNil)134	c.Check(l, DeepEquals, files[1:])135}136func (s *SnapSuite) TestAutoImportAssertsHappyNotOnClassic(c *C) {137	restore := release.MockOnClassic(true)138	defer restore()139	fakeAssertData := []byte("my-assertion")140	s.RedirectClientToTestServer(func(w http.ResponseWriter, r *http.Request) {141		c.Errorf("auto-import on classic is disabled, but something tried to do a %q with %s", r.Method, r.URL.Path)142	})143	fakeAssertsFn := filepath.Join(c.MkDir(), "auto-import.assert")144	err := ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)145	c.Assert(err, IsNil)146	mockMountInfoFmt := `14724 0 8:18 / %s rw,relatime shared:1 - ext4 /dev/sdb2 rw,errors=remount-ro,data=ordered`148	content := fmt.Sprintf(mockMountInfoFmt, filepath.Dir(fakeAssertsFn))149	restore = snap.MockMountInfoPath(makeMockMountInfo(c, content))150	defer restore()151	rest, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})152	c.Assert(err, IsNil)153	c.Assert(rest, DeepEquals, []string{})154	c.Check(s.Stdout(), Equals, "")155	c.Check(s.Stderr(), Equals, "auto-import is disabled on classic\n")156}157func (s *SnapSuite) TestAutoImportIntoSpool(c *C) {158	restore := release.MockOnClassic(false)159	defer restore()160	logbuf, restore := logger.MockLogger()161	defer restore()162	fakeAssertData := []byte("good-assertion")163	// ensure we can not connect164	snap.ClientConfig.BaseURL = "can-not-connect-to-this-url"165	fakeAssertsFn := filepath.Join(c.MkDir(), "auto-import.assert")166	err := ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)167	c.Assert(err, IsNil)168	mockMountInfoFmt := `16924 0 8:18 / %s rw,relatime shared:1 - squashfs /dev/sc1 rw,errors=remount-ro,data=ordered`170	content := fmt.Sprintf(mockMountInfoFmt, filepath.Dir(fakeAssertsFn))171	restore = snap.MockMountInfoPath(makeMockMountInfo(c, content))172	defer restore()173	rest, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})174	c.Assert(err, IsNil)175	c.Assert(rest, DeepEquals, []string{})176	c.Check(s.Stdout(), Equals, "")177	// matches because we may get a:178	//   "WARNING: cannot create syslog logger\n"179	// in the output180	c.Check(logbuf.String(), Matches, "(?ms).*queuing for later.*\n")181	files, err := ioutil.ReadDir(dirs.SnapAssertsSpoolDir)182	c.Assert(err, IsNil)183	c.Check(files, HasLen, 1)184	c.Check(files[0].Name(), Equals, "iOkaeet50rajLvL-0Qsf2ELrTdn3XIXRIBlDewcK02zwRi3_TJlUOTl9AaiDXmDn.assert")185}186func (s *SnapSuite) TestAutoImportFromSpoolHappy(c *C) {187	restore := release.MockOnClassic(false)188	defer restore()189	fakeAssertData := []byte("my-assertion")190	n := 0191	total := 2192	s.RedirectClientToTestServer(func(w http.ResponseWriter, r *http.Request) {193		switch n {194		case 0:195			c.Check(r.Method, Equals, "POST")196			c.Check(r.URL.Path, Equals, "/v2/assertions")197			postData, err := ioutil.ReadAll(r.Body)198			c.Assert(err, IsNil)199			c.Check(postData, DeepEquals, fakeAssertData)200			fmt.Fprintln(w, `{"type": "sync", "result": {"ready": true, "status": "Done"}}`)201			n++202		case 1:203			c.Check(r.Method, Equals, "POST")204			c.Check(r.URL.Path, Equals, "/v2/users")205			postData, err := ioutil.ReadAll(r.Body)206			c.Assert(err, IsNil)207			c.Check(string(postData), Equals, `{"action":"create","sudoer":true,"known":true}`)208			fmt.Fprintln(w, `{"type": "sync", "result": [{"username": "foo"}]}`)209			n++210		default:211			c.Fatalf("unexpected request: %v (expected %d got %d)", r, total, n)212		}213	})214	fakeAssertsFn := filepath.Join(dirs.SnapAssertsSpoolDir, "1234343")215	err := os.MkdirAll(filepath.Dir(fakeAssertsFn), 0755)216	c.Assert(err, IsNil)217	err = ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)218	c.Assert(err, IsNil)219	logbuf, restore := logger.MockLogger()220	defer restore()221	rest, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})222	c.Assert(err, IsNil)223	c.Assert(rest, DeepEquals, []string{})224	c.Check(s.Stdout(), Equals, `created user "foo"`+"\n")225	// matches because we may get a:226	//   "WARNING: cannot create syslog logger\n"227	// in the output228	c.Check(logbuf.String(), Matches, fmt.Sprintf("(?ms).*imported %s\n", fakeAssertsFn))229	c.Check(n, Equals, total)230	c.Check(osutil.FileExists(fakeAssertsFn), Equals, false)231}232func (s *SnapSuite) TestAutoImportIntoSpoolUnhappyTooBig(c *C) {233	restore := release.MockOnClassic(false)234	defer restore()235	_, restoreLogger := logger.MockLogger()236	defer restoreLogger()237	// fake data is bigger than the default assertion limit238	fakeAssertData := make([]byte, 641*1024)239	// ensure we can not connect240	snap.ClientConfig.BaseURL = "can-not-connect-to-this-url"241	fakeAssertsFn := filepath.Join(c.MkDir(), "auto-import.assert")242	err := ioutil.WriteFile(fakeAssertsFn, fakeAssertData, 0644)243	c.Assert(err, IsNil)244	mockMountInfoFmt := `24524 0 8:18 / %s rw,relatime shared:1 - squashfs /dev/sc1 rw,errors=remount-ro,data=ordered`246	content := fmt.Sprintf(mockMountInfoFmt, filepath.Dir(fakeAssertsFn))247	restore = snap.MockMountInfoPath(makeMockMountInfo(c, content))248	defer restore()249	_, err = snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})250	c.Assert(err, ErrorMatches, "cannot queue .*, file size too big: 656384")251}252func (s *SnapSuite) TestAutoImportUnhappyInInstallMode(c *C) {253	restore := release.MockOnClassic(false)254	defer restore()255	_, restoreLogger := logger.MockLogger()256	defer restoreLogger()257	mockProcCmdlinePath := filepath.Join(c.MkDir(), "cmdline")258	err := ioutil.WriteFile(mockProcCmdlinePath, []byte("foo=bar snapd_recovery_mode=install snapd_recovery_system=20191118"), 0644)259	c.Assert(err, IsNil)260	restore = boot.MockProcCmdline(mockProcCmdlinePath)261	defer restore()262	_, err = snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})263	c.Assert(err, IsNil)264	c.Check(s.Stdout(), Equals, "")265	c.Check(s.Stderr(), Equals, "auto-import is disabled in install-mode\n")266}267var mountStatic = []string{"mount", "-t", "ext4,vfat", "-o", "ro", "--make-private"}268func (s *SnapSuite) TestAutoImportFromRemovable(c *C) {269	restore := release.MockOnClassic(false)270	defer restore()271	_, restoreLogger := logger.MockLogger()272	defer restoreLogger()273	rootdir := c.MkDir()274	dirs.SetRootDir(rootdir)275	var umounts []string276	restore = snap.MockSyscallUmount(func(p string, _ int) error {277		umounts = append(umounts, p)278		return nil279	})280	defer restore()281	var tmpdirIdx int282	restore = snap.MockIoutilTempDir(func(where string, p string) (string, error) {283		c.Check(where, Equals, "")284		tmpdirIdx++285		return filepath.Join(rootdir, fmt.Sprintf("/tmp/%s%d", p, tmpdirIdx)), nil286	})287	defer restore()288	mountCmd := testutil.MockCommand(c, "mount", "")289	defer mountCmd.Restore()290	snaptest.PopulateDir(rootdir, [][]string{291		// removable without partitions292		{"sys/block/sdremovable/removable", "1\n"},293		// fixed disk294		{"sys/block/sdfixed/removable", "0\n"},295		// removable with partitions296		{"sys/block/sdpart/removable", "1\n"},297		{"sys/block/sdpart/sdpart1/partition", "1\n"},298		{"sys/block/sdpart/sdpart2/partition", "0\n"},299		{"sys/block/sdpart/sdpart3/partition", "1\n"},300		// removable but subdevices are not partitions?301		{"sys/block/sdother/removable", "1\n"},302		{"sys/block/sdother/sdother1/partition", "0\n"},303	})304	// do not mock mountinfo contents, we just want to observe whether we305	// try to mount and umount the right stuff306	_, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})307	c.Assert(err, IsNil)308	c.Check(s.Stdout(), Equals, "")309	c.Check(s.Stderr(), Equals, "")310	c.Check(mountCmd.Calls(), DeepEquals, [][]string{311		append(mountStatic, "/dev/sdpart1", filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-1")),312		append(mountStatic, "/dev/sdpart3", filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-2")),313		append(mountStatic, "/dev/sdremovable", filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-3")),314	})315	c.Check(umounts, DeepEquals, []string{316		filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-3"),317		filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-2"),318		filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-1"),319	})320}321func (s *SnapSuite) TestAutoImportNoRemovable(c *C) {322	restore := release.MockOnClassic(false)323	defer restore()324	rootdir := c.MkDir()325	dirs.SetRootDir(rootdir)326	var umounts []string327	restore = snap.MockSyscallUmount(func(p string, _ int) error {328		return fmt.Errorf("unexpected call")329	})330	defer restore()331	mountCmd := testutil.MockCommand(c, "mount", "exit 1")332	defer mountCmd.Restore()333	snaptest.PopulateDir(rootdir, [][]string{334		// fixed disk335		{"sys/block/sdfixed/removable", "0\n"},336		// removable but subdevices are not partitions?337		{"sys/block/sdother/removable", "1\n"},338		{"sys/block/sdother/sdother1/partition", "0\n"},339	})340	_, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import"})341	c.Assert(err, IsNil)342	c.Check(s.Stdout(), Equals, "")343	c.Check(s.Stderr(), Equals, "")344	c.Check(mountCmd.Calls(), HasLen, 0)345	c.Check(umounts, HasLen, 0)346}347func (s *SnapSuite) TestAutoImportFromMount(c *C) {348	restore := release.MockOnClassic(false)349	defer restore()350	_, restoreLogger := logger.MockLogger()351	defer restoreLogger()352	mountCmd := testutil.MockCommand(c, "mount", "")353	rootdir := c.MkDir()354	dirs.SetRootDir(rootdir)355	var umounts []string356	restore = snap.MockSyscallUmount(func(p string, _ int) error {357		c.Assert(umounts, HasLen, 0)358		umounts = append(umounts, p)359		return nil360	})361	defer restore()362	var tmpdircalls int363	restore = snap.MockIoutilTempDir(func(where string, p string) (string, error) {364		c.Check(where, Equals, "")365		c.Assert(tmpdircalls, Equals, 0)366		tmpdircalls++367		return filepath.Join(rootdir, fmt.Sprintf("/tmp/%s1", p)), nil368	})369	defer restore()370	// do not mock mountinfo contents, we just want to observe whether we371	// try to mount and umount the right stuff372	_, err := snap.Parser(snap.Client()).ParseArgs([]string{"auto-import", "--mount", "/dev/foobar"})373	c.Assert(err, IsNil)374	c.Check(s.Stdout(), Equals, "")375	c.Check(s.Stderr(), Equals, "")376	c.Check(mountCmd.Calls(), DeepEquals, [][]string{377		append(mountStatic, "/dev/foobar", filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-1")),378	})379	c.Check(umounts, DeepEquals, []string{380		filepath.Join(rootdir, "/tmp/snapd-auto-import-mount-1"),381	})382}...

populateDir

Using AI Code Generation

1import (2func main() {3	if len(os.Args) != 2 {4		fmt.Println("Usage: go run 2.go <directory>")5		os.Exit(1)6	}7	populateDir(dir)8}9func populateDir(dir string) {10	files, err := filepath.Glob(filepath.Join(dir, "*"))11	if err != nil {12		fmt.Println("Error getting file list")13		os.Exit(1)14	}15	for _, file := range files {16		fmt.Println(file)17	}18}

populateDir

Using AI Code Generation

1import (2func main() {3	newFile, err := os.Create("test.txt")4	if err != nil {5		log.Fatal(err)6	}7	defer newFile.Close()8	filePath := filepath.Dir("test.txt")9	populateDir(filePath)10}11func populateDir(path string) {12	newFile, err := os.Create("test1.txt")13	if err != nil {14		log.Fatal(err)15	}16	defer newFile.Close()17	filePath := filepath.Dir("test1.txt")18	newFile1, err := os.Create("test2.txt")19	if err != nil {20		log.Fatal(err)21	}22	defer newFile1.Close()23	filePath1 := filepath.Dir("test2.txt")24	newFile2, err := os.Create("test3.txt")25	if err != nil {26		log.Fatal(err)27	}28	defer newFile2.Close()29	filePath2 := filepath.Dir("test3.txt")30	newFile3, err := os.Create("test4.txt")31	if err != nil {32		log.Fatal(err)33	}34	defer newFile3.Close()35	filePath3 := filepath.Dir("test4.txt")36	newFile4, err := os.Create("test5.txt")37	if err != nil {38		log.Fatal(err)39	}40	defer newFile4.Close()41	filePath4 := filepath.Dir("test5.txt")42	newFile5, err := os.Create("test6.txt")43	if err != nil {44		log.Fatal(err)45	}46	defer newFile5.Close()

populateDir

Using AI Code Generation

1import (2func main() {3	fmt.Println("Enter the path to be populated: ")4	fmt.Scanln(&path)5	os.Chdir(path)6	fmt.Println("Enter the number of files to be created: ")7	fmt.Scanln(&n)8	for i := 0; i < n; i++ {9		fmt.Println("Enter the name of the file: ")10		fmt.Scanln(&name)11		f, err := os.Create(name)12		if err != nil {13			fmt.Println("Error creating file")14		}15		f.Close()16	}17}

populateDir

Using AI Code Generation

1import (2func main() {3	obj.populateDir()4	fmt.Println(obj.dir)5}6import (7func main() {8	obj.populateDir()9	fmt.Println(obj.dir)10}11import (12func main() {13	obj.populateDir()14	fmt.Println(obj.dir)15}16import (17func main() {18	obj.populateDir()19	fmt.Println(obj.dir)20}21import (22func main() {23	obj.populateDir()24	fmt.Println(obj.dir)25}26import (27func main() {28	obj.populateDir()29	fmt.Println(obj.dir)30}31import (32func main() {33	obj.populateDir()34	fmt.Println(obj.dir)35}36import (37func main() {

populateDir

Using AI Code Generation

1import (2func main() {3	fmt.Println("Enter the directory name")4	fmt.Scanln(&dirName)5	fmt.Println("Enter the number of sub-directories")6	fmt.Scanln(&numSubDir)7	fmt.Println("Enter the number of files")8	fmt.Scanln(&numFiles)9	err := os.Mkdir(dirPath, 0777)10	if err != nil {11		fmt.Println("Error creating directory")12	}13	for i := 0; i < numSubDir; i++ {14		fmt.Println("Enter the sub-directory name")15		fmt.Scanln(&subDirName)16		err := os.Mkdir(subDirPath, 0777)17		if err != nil {18			fmt.Println("Error creating sub-directory")19		}20		for j := 0; j < numFiles; j++ {21			fmt.Println("Enter the file name")22			fmt.Scanln(&fileName)23			f, err := os.Create(filePath)24			if err != nil {25				fmt.Println("Error creating file")26			}27			fmt.Println("Enter the file content")28			fmt.Scanln(&fileContent)29			_, err = f.WriteString(fileContent)30			if err != nil {31				fmt.Println("Error writing to file")32			}33			f.Close()34		}35	}36}37import (38func main() {39	fmt.Println("Enter the directory name")40	fmt.Scanln(&dirName)41	err := os.RemoveAll(dirPath)42	if err != nil {43		fmt.Println("Error deleting directory")44	}45}

populateDir

Using AI Code Generation

1import (2func main() {3	m := new(mainClass)4	m.populateDir()5	fmt.Println(m.dir)6	fmt.Println(len(m.dir))7}8import (9func main() {10	m := new(mainClass)11	m.populateDir()12	fmt.Println(m.dir)13	fmt.Println(len(m.dir))14}15import (16type mainClass struct {17}18func (m *mainClass) populateDir() {19	files, err := ioutil.ReadDir("./")20	if err != nil {21		fmt.Println(err)22	}23	m.dir = make(map[string]os.FileInfo)24	for _, f := range files {25		m.dir[f.Name()] = f26	}27	m.sortDir()28}29func (m *mainClass) sortDir() {30	sorted := make([]string, len(m.dir))31	for k := range m.dir {32	}33	sort.Strings(sorted)34	newDir := make(map[string]os.FileInfo)

populateDir

Using AI Code Generation

1import (2func main() {3	dir = new(DirectoryImpl)4	dir.populateDir("C:\\Users\\sudha\\Desktop\\GoLang")5	fmt.Println(dir)6}

Automation Testing Tutorials

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