diff options
Diffstat (limited to 'go/vendor/golang.org/x/sys/unix/syscall_darwin.go')
| -rw-r--r-- | go/vendor/golang.org/x/sys/unix/syscall_darwin.go | 127 |
1 files changed, 113 insertions, 14 deletions
diff --git a/go/vendor/golang.org/x/sys/unix/syscall_darwin.go b/go/vendor/golang.org/x/sys/unix/syscall_darwin.go index b959869..1aabc56 100644 --- a/go/vendor/golang.org/x/sys/unix/syscall_darwin.go +++ b/go/vendor/golang.org/x/sys/unix/syscall_darwin.go @@ -13,7 +13,7 @@ package unix import ( - errorspkg "errors" + "errors" "syscall" "unsafe" ) @@ -98,7 +98,7 @@ type attrList struct { func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) { if len(attrBuf) < 4 { - return nil, errorspkg.New("attrBuf too small") + return nil, errors.New("attrBuf too small") } attrList.bitmapCount = attrBitMapCount @@ -134,12 +134,12 @@ func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) ( for i := uint32(0); int(i) < len(dat); { header := dat[i:] if len(header) < 8 { - return attrs, errorspkg.New("truncated attribute header") + return attrs, errors.New("truncated attribute header") } datOff := *(*int32)(unsafe.Pointer(&header[0])) attrLen := *(*uint32)(unsafe.Pointer(&header[4])) if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) { - return attrs, errorspkg.New("truncated results; attrBuf too small") + return attrs, errors.New("truncated results; attrBuf too small") } end := uint32(datOff) + attrLen attrs = append(attrs, dat[datOff:end]) @@ -176,6 +176,112 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { return } +func xattrPointer(dest []byte) *byte { + // It's only when dest is set to NULL that the OS X implementations of + // getxattr() and listxattr() return the current sizes of the named attributes. + // An empty byte array is not sufficient. To maintain the same behaviour as the + // linux implementation, we wrap around the system calls and pass in NULL when + // dest is empty. + var destp *byte + if len(dest) > 0 { + destp = &dest[0] + } + return destp +} + +//sys getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) + +func Getxattr(path string, attr string, dest []byte) (sz int, err error) { + return getxattr(path, attr, xattrPointer(dest), len(dest), 0, 0) +} + +func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) { + return getxattr(link, attr, xattrPointer(dest), len(dest), 0, XATTR_NOFOLLOW) +} + +//sys fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) + +func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) { + return fgetxattr(fd, attr, xattrPointer(dest), len(dest), 0, 0) +} + +//sys setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error) + +func Setxattr(path string, attr string, data []byte, flags int) (err error) { + // The parameters for the OS X implementation vary slightly compared to the + // linux system call, specifically the position parameter: + // + // linux: + // int setxattr( + // const char *path, + // const char *name, + // const void *value, + // size_t size, + // int flags + // ); + // + // darwin: + // int setxattr( + // const char *path, + // const char *name, + // void *value, + // size_t size, + // u_int32_t position, + // int options + // ); + // + // position specifies the offset within the extended attribute. In the + // current implementation, only the resource fork extended attribute makes + // use of this argument. For all others, position is reserved. We simply + // default to setting it to zero. + return setxattr(path, attr, xattrPointer(data), len(data), 0, flags) +} + +func Lsetxattr(link string, attr string, data []byte, flags int) (err error) { + return setxattr(link, attr, xattrPointer(data), len(data), 0, flags|XATTR_NOFOLLOW) +} + +//sys fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error) + +func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) { + return fsetxattr(fd, attr, xattrPointer(data), len(data), 0, 0) +} + +//sys removexattr(path string, attr string, options int) (err error) + +func Removexattr(path string, attr string) (err error) { + // We wrap around and explicitly zero out the options provided to the OS X + // implementation of removexattr, we do so for interoperability with the + // linux variant. + return removexattr(path, attr, 0) +} + +func Lremovexattr(link string, attr string) (err error) { + return removexattr(link, attr, XATTR_NOFOLLOW) +} + +//sys fremovexattr(fd int, attr string, options int) (err error) + +func Fremovexattr(fd int, attr string) (err error) { + return fremovexattr(fd, attr, 0) +} + +//sys listxattr(path string, dest *byte, size int, options int) (sz int, err error) + +func Listxattr(path string, dest []byte) (sz int, err error) { + return listxattr(path, xattrPointer(dest), len(dest), 0) +} + +func Llistxattr(link string, dest []byte) (sz int, err error) { + return listxattr(link, xattrPointer(dest), len(dest), XATTR_NOFOLLOW) +} + +//sys flistxattr(fd int, dest *byte, size int, options int) (sz int, err error) + +func Flistxattr(fd int, dest []byte) (sz int, err error) { + return flistxattr(fd, xattrPointer(dest), len(dest), 0) +} + func setattrlistTimes(path string, times []Timespec, flags int) error { _p0, err := BytePtrFromString(path) if err != nil { @@ -231,11 +337,11 @@ func IoctlSetInt(fd int, req uint, value int) error { return ioctl(fd, req, uintptr(value)) } -func IoctlSetWinsize(fd int, req uint, value *Winsize) error { +func ioctlSetWinsize(fd int, req uint, value *Winsize) error { return ioctl(fd, req, uintptr(unsafe.Pointer(value))) } -func IoctlSetTermios(fd int, req uint, value *Termios) error { +func ioctlSetTermios(fd int, req uint, value *Termios) error { return ioctl(fd, req, uintptr(unsafe.Pointer(value))) } @@ -330,6 +436,7 @@ func Uname(uname *Utsname) error { //sys Flock(fd int, how int) (err error) //sys Fpathconf(fd int, name int) (val int, err error) //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 +//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 //sys Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_FSTATFS64 //sys Fsync(fd int) (err error) //sys Ftruncate(fd int, length int64) (err error) @@ -446,14 +553,6 @@ func Uname(uname *Utsname) error { // Watchevent // Waitevent // Modwatch -// Getxattr -// Fgetxattr -// Setxattr -// Fsetxattr -// Removexattr -// Fremovexattr -// Listxattr -// Flistxattr // Fsctl // Initgroups // Posix_spawn |