syscall: add {Get,Set,List,Remove}xattr on Linux.

R=golang-dev, minux.ma, fullung, dave, rsc, hanwenn
CC=golang-dev
https://golang.org/cl/6350074

diff --git a/src/pkg/syscall/syscall_linux.go b/src/pkg/syscall/syscall_linux.go
index 9998188cecf8eff2136ad53a49302086b1b8f6af..b15f1fa965324ff2620929c79ee690aee8db3fdb 100644 (file)
--- a/src/pkg/syscall/syscall_linux.go
+++ b/src/pkg/syscall/syscall_linux.go
@@ -849,6 +849,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
 //sysnb        Getppid() (ppid int)
 //sysnb        Getrusage(who int, rusage *Rusage) (err error)
 //sysnb        Gettid() (tid int)
+//sys  Getxattr(path string, attr string, dest []byte) (sz int, err error)
 //sys  InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
 //sysnb        InotifyInit() (fd int, err error)
 //sysnb        InotifyInit1(flags int) (fd int, err error)
@@ -856,6 +857,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
 //sysnb        Kill(pid int, sig Signal) (err error)
 //sys  Klogctl(typ int, buf []byte) (n int, err error) = SYS_SYSLOG
 //sys  Link(oldpath string, newpath string) (err error)
+//sys  Listxattr(path string, dest []byte) (sz int, err error)
 //sys  Mkdir(path string, mode uint32) (err error)
 //sys  Mkdirat(dirfd int, path string, mode uint32) (err error)
 //sys  Mknod(path string, mode uint32, dev int) (err error)
@@ -866,6 +868,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
 //sysnb prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) = SYS_PRLIMIT64
 //sys  read(fd int, p []byte) (n int, err error)
 //sys  Readlink(path string, buf []byte) (n int, err error)
+//sys  Removexattr(path string, attr string) (err error)
 //sys  Rename(oldpath string, newpath string) (err error)
 //sys  Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
 //sys  Rmdir(path string) (err error)
@@ -875,6 +878,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
 //sysnb        Setsid() (pid int, err error)
 //sysnb        Settimeofday(tv *Timeval) (err error)
 //sysnb        Setuid(uid int) (err error)
+//sys  Setxattr(path string, attr string, data []byte, flags int) (err error)
 //sys  Symlink(oldpath string, newpath string) (err error)
 //sys  Sync()
 //sysnb        Sysinfo(info *Sysinfo_t) (err error)
@@ -954,7 +958,6 @@ func Munmap(b []byte) (err error) {
 // Getitimer
 // Getpmsg
 // Getpriority
-// Getxattr
 // IoCancel
 // IoDestroy
 // IoGetevents
@@ -966,7 +969,6 @@ func Munmap(b []byte) (err error) {
 // KexecLoad
 // Keyctl
 // Lgetxattr
-// Listxattr
 // Llistxattr
 // LookupDcookie
 // Lremovexattr
@@ -1004,7 +1006,6 @@ func Munmap(b []byte) (err error) {
 // Readahead
 // Readv
 // RemapFilePages
-// Removexattr
 // RequestKey
 // RestartSyscall
 // RtSigaction
@@ -1033,7 +1034,6 @@ func Munmap(b []byte) (err error) {
 // SetThreadArea
 // SetTidAddress
 // Setpriority
-// Setxattr
 // Shmat
 // Shmctl
 // Shmdt
@@ -1059,5 +1059,4 @@ func Munmap(b []byte) (err error) {
 // Vmsplice
 // Vserver
 // Waitid
-// Writev
 // _Sysctl

diff --git a/src/pkg/syscall/zsyscall_linux_386.go b/src/pkg/syscall/zsyscall_linux_386.go
index dd0cefb4b6c7ed1d3f2278ec28489a7eb3362f42..789e7a535f0cf8f4836161dc2c56a8ba77c9a596 100644 (file)
--- a/src/pkg/syscall/zsyscall_linux_386.go
+++ b/src/pkg/syscall/zsyscall_linux_386.go
@@ -527,6 +527,33 @@ func Gettid() (tid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(dest) > 0 {
+               _p2 = unsafe.Pointer(&dest[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(pathname)
@@ -623,6 +650,28 @@ func Link(oldpath string, newpath string) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Listxattr(path string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 unsafe.Pointer
+       if len(dest) > 0 {
+               _p1 = unsafe.Pointer(&dest[0])
+       } else {
+               _p1 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Mkdir(path string, mode uint32) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -772,6 +821,26 @@ func Readlink(path string, buf []byte) (n int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Removexattr(path string, attr string) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       _, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Rename(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)
@@ -900,6 +969,32 @@ func Setuid(uid int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Setxattr(path string, attr string, data []byte, flags int) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(data) > 0 {
+               _p2 = unsafe.Pointer(&data[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       _, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Symlink(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)

diff --git a/src/pkg/syscall/zsyscall_linux_amd64.go b/src/pkg/syscall/zsyscall_linux_amd64.go
index 323c099568ece7689b8242dc060d99eda19bebc1..ed9deec9ad3ee39bc372d6a9a8802eaab0180f88 100644 (file)
--- a/src/pkg/syscall/zsyscall_linux_amd64.go
+++ b/src/pkg/syscall/zsyscall_linux_amd64.go
@@ -527,6 +527,33 @@ func Gettid() (tid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(dest) > 0 {
+               _p2 = unsafe.Pointer(&dest[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(pathname)
@@ -623,6 +650,28 @@ func Link(oldpath string, newpath string) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Listxattr(path string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 unsafe.Pointer
+       if len(dest) > 0 {
+               _p1 = unsafe.Pointer(&dest[0])
+       } else {
+               _p1 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Mkdir(path string, mode uint32) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -772,6 +821,26 @@ func Readlink(path string, buf []byte) (n int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Removexattr(path string, attr string) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       _, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Rename(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)
@@ -900,6 +969,32 @@ func Setuid(uid int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Setxattr(path string, attr string, data []byte, flags int) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(data) > 0 {
+               _p2 = unsafe.Pointer(&data[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       _, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Symlink(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)

diff --git a/src/pkg/syscall/zsyscall_linux_arm.go b/src/pkg/syscall/zsyscall_linux_arm.go
index 2e1d498da966df925836397e389c2d141b799f1f..3288bcf950f36feb7274a635929138c690052703 100644 (file)
--- a/src/pkg/syscall/zsyscall_linux_arm.go
+++ b/src/pkg/syscall/zsyscall_linux_arm.go
@@ -527,6 +527,33 @@ func Gettid() (tid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(dest) > 0 {
+               _p2 = unsafe.Pointer(&dest[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(pathname)
@@ -623,6 +650,28 @@ func Link(oldpath string, newpath string) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Listxattr(path string, dest []byte) (sz int, err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 unsafe.Pointer
+       if len(dest) > 0 {
+               _p1 = unsafe.Pointer(&dest[0])
+       } else {
+               _p1 = unsafe.Pointer(&_zero)
+       }
+       r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
+       sz = int(r0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Mkdir(path string, mode uint32) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -772,6 +821,26 @@ func Readlink(path string, buf []byte) (n int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Removexattr(path string, attr string) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       _, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Rename(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)
@@ -900,6 +969,32 @@ func Setuid(uid int) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func Setxattr(path string, attr string, data []byte, flags int) (err error) {
+       var _p0 *byte
+       _p0, err = BytePtrFromString(path)
+       if err != nil {
+               return
+       }
+       var _p1 *byte
+       _p1, err = BytePtrFromString(attr)
+       if err != nil {
+               return
+       }
+       var _p2 unsafe.Pointer
+       if len(data) > 0 {
+               _p2 = unsafe.Pointer(&data[0])
+       } else {
+               _p2 = unsafe.Pointer(&_zero)
+       }
+       _, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = e1
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Symlink(oldpath string, newpath string) (err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(oldpath)