How to use CreateSharedMemFile method of osutil Package

Best Syzkaller code snippet using osutil.CreateSharedMemFile

sharedmem_file.go

Source:sharedmem_file.go

...7	"fmt"8	"io/ioutil"9	"os"10)11func CreateSharedMemFile(size int) (f *os.File, err error) {12	f, err = ioutil.TempFile("./", "syzkaller-shm")13	if err != nil {14		err = fmt.Errorf("failed to create temp file: %v", err)15		return16	}17	f.Close()18	fname := f.Name()19	f, err = os.OpenFile(f.Name(), os.O_RDWR, DefaultFilePerm)20	if err != nil {21		err = fmt.Errorf("failed to open shm file: %v", err)22		os.Remove(fname)23	}24	return25}...

sharedmem_memfd.go

Source:sharedmem_memfd.go

...8	"os"9	"golang.org/x/sys/unix"10)11// In the case of Linux, we can just use the memfd_create syscall.12func CreateSharedMemFile(size int) (f *os.File, err error) {13	// The name is actually irrelevant and can even be the same for all such files.14	fd, err := unix.MemfdCreate("syz-shared-mem", unix.MFD_CLOEXEC)15	if err != nil {16		err = fmt.Errorf("failed to do memfd_create: %v", err)17		return18	}19	f = os.NewFile(uintptr(fd), fmt.Sprintf("/proc/self/fd/%d", fd))20	return21}22func CloseSharedMemFile(f *os.File) error {23	return f.Close()24}...

CreateSharedMemFile

Using AI Code Generation

1import (2func main() {3	ole.CoInitialize(0)4	defer ole.CoUninitialize()5	osutilObj, err := oleutil.CreateObject("osutil.osutil")6	if err != nil {7		fmt.Println("Error in creating osutil object", err)8	}9	osutilObjDisp, err := osutilObj.QueryInterface(ole.IID_IDispatch)10	if err != nil {11		fmt.Println("Error in getting IDispatch interface from osutil object", err)12	}13	shmFile, err := osutil.CreateSharedMemFile(osutilObjDisp, "test", 1024)14	if err != nil {15		fmt.Println("Error in creating shared memory file", err)16	}17	shmFileDisp, err := shmFile.QueryInterface(ole.IID_IDispatch)18	if err != nil {19		fmt.Println("Error in getting IDispatch interface from shared memory file object", err)20	}21	fileHandle, err := osutil.GetFileHandle(shmFileDisp)22	if err != nil {23		fmt.Println("Error in getting file handle from shared memory file object", err)24	}25	mappedFile, err := osutil.MapFile(fileHandle, 1024, 0)26	if err != nil {27		fmt.Println("Error in mapping the shared memory file", err)28	}29	mappedFileDisp, err := mappedFile.QueryInterface(ole.IID_IDispatch)30	if err != nil {31		fmt.Println("Error in getting IDispatch interface from mapped file object", err)32	}33	ptr, err := osutil.GetPointer(mappedFileDisp)34	if err != nil {35		fmt.Println("Error

CreateSharedMemFile

Using AI Code Generation

1import (2func main() {3	shm, err := osutil.CreateSharedMemFile(1024)4	if err != nil {5		fmt.Println(err)6		os.Exit(1)7	}8	defer shm.Close()9	cmd := exec.Command("3.exe")10	cmd.SysProcAttr = &syscall.SysProcAttr{11	}12	cmd.ExtraFiles = []*os.File{shm}13	err = cmd.Start()14	if err != nil {15		fmt.Println(err)16		os.Exit(1)17	}18	_, _, err = syscall.Syscall(syscall.NewLazyDLL("kernel32.dll").NewProc("ResumeThread").Addr(), 1, uintptr(cmd.Process.Pid), 0, 0)19	if err != 0 {20		fmt.Println(err)21		os.Exit(1)22	}23	cmd.Wait()24}25import (26func main() {27	shm, err := osutil.OpenSharedMemFile("shared_mem_file_123")28	if err != nil {29		fmt.Println(err)30		os.Exit(1)31	}32	defer shm.Close()33	buf := make([]byte, 1024)34	_, err = shm.Read(buf)35	if err != nil {36		fmt.Println(err)37		os.Exit(1)38	}39	_, err = shm.Write([]byte("Hello from child process"))40	if err != nil {41		fmt.Println(err)42		os.Exit(1)43	}44	err = shm.Close()45	if err != nil {46		fmt.Println(err)47		os.Exit(1)48	}49}50import (

CreateSharedMemFile

Using AI Code Generation

1import "os"2import "fmt"3import "osutil"4func main() {5    shm, err = osutil.CreateSharedMemFile("/tmp/test", 0666, 1024)6    if err != nil {7        fmt.Println(err)8    }9    fmt.Println(shm)10}11import "os"12import "fmt"13import "osutil"14func main() {15    shm, err = osutil.ReadSharedMemFile("/tmp/test")16    if err != nil {17        fmt.Println(err)18    }19    fmt.Println(shm)20}21import "os"22import "fmt"23import "osutil"24func main() {25    shm, err = osutil.WriteSharedMemFile("/tmp/test")26    if err != nil {27        fmt.Println(err)28    }29    fmt.Println(shm)30}31import "os"32import "fmt"33import "osutil"34func main() {35    err = osutil.RemoveSharedMemFile("/tmp/test")36    if err != nil {37        fmt.Println(err)38    }39}40import "os"41import "fmt"42import "osutil"43func main() {44    err = osutil.SharedMemFileExists("/tmp/test")45    if err != nil {46        fmt.Println(err)47    }48}49import "os"50import "fmt"51import "osutil"52func main() {53    shm, err = osutil.SharedMemFileStat("/tmp/test")54    if err != nil {55        fmt.Println(err)56    }57    fmt.Println(shm)58}

CreateSharedMemFile

Using AI Code Generation

1func main() {2    shm, err := osutil.CreateSharedMemFile("test", 0600, 100)3    if err != nil {4        fmt.Println("error while creating shared memory file")5    }6    defer shm.Close()7    n, err := shm.WriteString("hello world")8    if err != nil {9        fmt.Println("error while writing to shared memory file")10    }11    fmt.Println("wrote", n, "bytes")12    b := make([]byte, 100)13    n, err = shm.Read(b)14    if err != nil {15        fmt.Println("error while reading from shared memory file")16    }17    fmt.Println("read", n, "bytes")18    fmt.Println(string(b))19}20func main() {21    shm, err := osutil.CreateSharedMemFile("test", 0600, 100)22    if err != nil {23        fmt.Println("error while creating shared memory file")24    }25    defer shm.Close()26    n, err := shm.WriteString("hello world")27    if err != nil {28        fmt.Println("error while writing to shared memory file")29    }30    fmt.Println("wrote", n, "bytes")31    b := make([]byte, 100)32    n, err = shm.Read(b)33    if err != nil {34        fmt.Println("error while reading from shared memory file")35    }36    fmt.Println("read", n, "bytes")37    fmt.Println(string(b))38}39func main() {40    shm, err := osutil.CreateSharedMemFile("test", 0600

CreateSharedMemFile

Using AI Code Generation

1import (2func main() {3    osutil.CreateSharedMemFile("testfile")4}5import (6func main() {7    osutil.DeleteSharedMemFile("testfile")8}9import (10func main() {11    osutil.WriteSharedMemFile("testfile", "test data")12}13import (14func main() {15    fmt.Println(osutil.ReadSharedMemFile("testfile"))16}17import (18func main() {19    fmt.Println(osutil.GetSharedMemFileList())20}21import (22func main() {23    fmt.Println(osutil.GetSharedMemFileList())24}25import (26func main() {27    fmt.Println(osutil.GetSharedMemFileList())28}29import (30func main() {31    fmt.Println(osutil.GetSharedMemFileList())32}33import

CreateSharedMemFile

Using AI Code Generation

1import (2func main() {3key := common.MakeRandomBytes(32)4keyString := base58.Encode(key)5sharedMemFile, err := osutil.CreateSharedMemFile(keyString)6if err != nil {7fmt.Println("Error creating shared memory file!")8}9defer sharedMemFile.Close()10_, err = sharedMemFile.Write([]byte("Hello World!"))11if err != nil {12fmt.Println("Error writing to shared memory file!")13}14}15import (16func main() {17key := common.MakeRandomBytes(32)18keyString := base58.Encode(key)19sharedMemFile, err := osutil.OpenSharedMemFile(keyString)20if err != nil {21fmt.Println("Error opening shared memory file!")22}23defer sharedMemFile.Close()24data := make([]byte, 512)25_, err = sharedMemFile.Read(data)26if err != nil {27fmt.Println("Error reading from shared

CreateSharedMemFile

Using AI Code Generation

1import (2func main() {3	fd,err := osutil.CreateSharedMemFile(100,"/tmp/test")4	if err != nil {5		fmt.Println("error in creating shared memory file",err)6	}7	fmt.Println("fd is",fd)8}9import (10func main() {11	ptr,err := osutil.MapSharedMem(3,100)12	if err != nil {13		fmt.Println("error in mapping shared memory file to memory",err)14	}15	fmt.Println("ptr is",ptr)16}17import (18func main() {19	err := osutil.UnMapSharedMem(0x7f4f2c000000,100)20	if err != nil {21		fmt.Println("error in unmapping shared memory file from memory",err)22	}23}24import (25func main() {26	err := osutil.CloseSharedMemFile(3)27	if err != nil {28		fmt.Println("error in closing shared memory file",err)29	}30}

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