syscall: Fill out GNU/Linux support.

[pf3gnuchains/gcc-fork.git] / libgo / go / syscall / libcall_linux.go

diff --git a/libgo/go/syscall/libcall_linux.go b/libgo/go/syscall/libcall_linux.go
index 7e88d04..cb04eac 100644 (file)
--- a/libgo/go/syscall/libcall_linux.go
+++ b/libgo/go/syscall/libcall_linux.go
@@ -160,27 +160,23 @@ func PtraceAttach(pid int) (err error) { return ptrace(PTRACE_ATTACH, pid, 0, 0)
 
 func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0) }
 
 
 func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0) }
 

-// FIXME: mksysinfo needs to produce LINUX_REBOOT_MAGIC[12].
-
-// //sys       reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error)
-// //reboot(magic1 uint, magic2 uint, cmd int, arg *byte) int
-// func Reboot(cmd int) (err error) {
-//     return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd, "")
-// }
+//sys  reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error)
+//reboot(magic1 uint, magic2 uint, cmd int, arg *byte) int
+func Reboot(cmd int) (err error) {
+       return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd, "")
+}

 
 //sys  Acct(path string) (err error)
 //acct(path *byte) int
 
 
 //sys  Acct(path string) (err error)
 //acct(path *byte) int
 

-// FIXME: mksysinfo Timex
-// //sys       Adjtimex(buf *Timex) (state int, err error)
-// //adjtimex(buf *Timex) int
+//sys  Adjtimex(buf *Timex) (state int, err error)
+//adjtimex(buf *Timex) int

 
 //sys  Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
 //faccessat(dirfd int, pathname *byte, mode int, flags int) int
 
 
 //sys  Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
 //faccessat(dirfd int, pathname *byte, mode int, flags int) int
 

-// FIXME: Only in glibc 2.10 and later.
-// //sys       Fallocate(fd int, mode uint32, off int64, len int64) (err error)
-// //fallocate(fd int, mode int, offset Offset_t, len Offset_t) int
+//sys  Fallocate(fd int, mode uint32, off int64, len int64) (err error)
+//fallocate(fd int, mode int, offset Offset_t, len Offset_t) int

 
 //sys  Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
 //fchmodat(dirfd int, pathname *byte, mode Mode_t, flags int) int
 
 //sys  Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
 //fchmodat(dirfd int, pathname *byte, mode Mode_t, flags int) int


@@ -191,18 +187,64 @@ func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0)
 //sys  Flock(fd int, how int) (err error)
 //flock(fd int, how int) int
 
 //sys  Flock(fd int, how int) (err error)
 //flock(fd int, how int) int
 

-// FIXME: mksysinfo statfs
-// //sys       Fstatfs(fd int, buf *Statfs_t) (err error)
-// //fstatfs(fd int, buf *Statfs_t) int
+//sys  Fstatfs(fd int, buf *Statfs_t) (err error)
+//fstatfs(fd int, buf *Statfs_t) int
+
+func Gettid() (tid int) {
+       r1, _, _ := Syscall(SYS_GETTID, 0, 0, 0)
+       return int(r1)
+}
+
+func Getdents(fd int, buf []byte) (n int, err error) {
+       var p *byte
+       if len(buf) > 0 {
+               p = &buf[0]
+       } else {
+               p = (*byte)(unsafe.Pointer(&_zero))
+       }
+       entersyscall()
+       r1, _, errno := Syscall(SYS_GETDENTS64, uintptr(fd), uintptr(unsafe.Pointer(p)), uintptr(len(buf)))
+       n = int(r1)
+       if n < 0 {
+               err = errno
+       }
+       exitsyscall()
+       return
+}
+
+func clen(n []byte) int {
+       for i := 0; i < len(n); i++ {
+               if n[i] == 0 {
+                       return i
+               }
+       }
+       return len(n)
+}

 
 

-// FIXME: Only available as a syscall.
-// //sysnb     Gettid() (tid int)
-// //gettid() Pid_t
+func ReadDirent(fd int, buf []byte) (n int, err error) {
+       return Getdents(fd, buf)
+}

 
 

-// FIXME: mksysinfo linux_dirent
-//    Or just abandon this function.
-// //sys       Getdents(fd int, buf []byte) (n int, err error)
-// //getdents64(fd int, buf *byte, count uint)
+func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
+       origlen := len(buf)
+       count = 0
+       for max != 0 && len(buf) > 0 {
+               dirent := (*Dirent)(unsafe.Pointer(&buf[0]))
+               buf = buf[dirent.Reclen:]
+               if dirent.Ino == 0 { // File absent in directory.
+                       continue
+               }
+               bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0]))
+               var name = string(bytes[0:clen(bytes[:])])
+               if name == "." || name == ".." { // Useless names
+                       continue
+               }
+               max--
+               count++
+               names = append(names, name)
+       }
+       return origlen - len(buf), count, names
+}

 
 //sys  InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
 //inotify_add_watch(fd int, pathname *byte, mask uint32) int
 
 //sys  InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
 //inotify_add_watch(fd int, pathname *byte, mask uint32) int


@@ -210,9 +252,8 @@ func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0)
 //sysnb        InotifyInit() (fd int, err error)
 //inotify_init() int
 
 //sysnb        InotifyInit() (fd int, err error)
 //inotify_init() int
 

-// FIXME: Only in glibc 2.9 and later.
-// //sysnb     InotifyInit1(flags int) (fd int, err error)
-// //inotify_init1(flags int) int
+//sysnb        InotifyInit1(flags int) (fd int, err error)
+//inotify_init1(flags int) int

 
 //sysnb        InotifyRmWatch(fd int, watchdesc uint32) (success int, err error)
 //inotify_rm_watch(fd int, wd uint32) int
 
 //sysnb        InotifyRmWatch(fd int, watchdesc uint32) (success int, err error)
 //inotify_rm_watch(fd int, wd uint32) int


@@ -282,24 +323,25 @@ func Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n i
        return
 }
 
        return
 }
 

-// FIXME: mksysinfo statfs
-// //sys       Statfs(path string, buf *Statfs_t) (err error)
-// //statfs(path *byte, buf *Statfs_t) int
+//sys  Statfs(path string, buf *Statfs_t) (err error)
+//statfs(path *byte, buf *Statfs_t) int

 
 

-// FIXME: Only in glibc 2.6 and later.
-// //sys       SyncFileRange(fd int, off int64, n int64, flags int) (err error)
-// //sync_file_range(fd int, off Offset_t, n Offset_t, flags uint) int
+//sys  SyncFileRange(fd int, off int64, n int64, flags int) (err error)
+//sync_file_range(fd int, off Offset_t, n Offset_t, flags uint) int

 
 

-// FIXME: mksysinfo Sysinfo_t
-// //sysnb     Sysinfo(info *Sysinfo_t) (err error)
-// //sysinfo(info *Sysinfo_t) int
+//sysnb        Sysinfo(info *Sysinfo_t) (err error)
+//sysinfo(info *Sysinfo_t) int

 
 //sys  Tee(rfd int, wfd int, len int, flags int) (n int64, err error)
 //tee(rfd int, wfd int, len Size_t, flags uint) Ssize_t
 
 
 //sys  Tee(rfd int, wfd int, len int, flags int) (n int64, err error)
 //tee(rfd int, wfd int, len Size_t, flags uint) Ssize_t
 

-// FIXME: Only available as a syscall.
-// //sysnb     Tgkill(tgid int, tid int, sig int) (err error)
-// //tgkill(tgid int, tid int, sig int) int
+func Tgkill(tgid, tid, sig int) error {
+       r1, _, errno := Syscall(SYS_TGKILL, uintptr(tgid), uintptr(tid), uintptr(sig))
+       if r1 < 0 {
+               return errno
+       }
+       return nil
+}

 
 //sys  unlinkat(dirfd int, path string, flags int) (err error)
 //unlinkat(dirfd int, path *byte, flags int) int
 
 //sys  unlinkat(dirfd int, path string, flags int) (err error)
 //unlinkat(dirfd int, path *byte, flags int) int


@@ -314,6 +356,5 @@ func Unlinkat(dirfd int, path string) (err error) {
 //sys  Unshare(flags int) (err error)
 //unshare(flags int) int
 
 //sys  Unshare(flags int) (err error)
 //unshare(flags int) int
 

-// FIXME: mksysinfo Ustat_t
-// //sys       Ustat(dev int, ubuf *Ustat_t) (err error)
-// //ustat(dev _dev_t, ubuf *Ustat_t) int
+//sys  Ustat(dev int, ubuf *Ustat_t) (err error)
+//ustat(dev _dev_t, ubuf *Ustat_t) int