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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-12-16 01:45:45 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-12-16 01:45:45 +0000 |
| commit | fe6272cc446f327c8e72c0c99aebd69fe9672c21 (patch) | |
| tree | 6f28e29ad1612736e6c4437ac5d5a215b6fc05dd /libgo | |
| parent | dead5b9978dc169e846a726a6538b165a5c00274 (diff) | |
| download | gcc-fe6272cc446f327c8e72c0c99aebd69fe9672c21.zip gcc-fe6272cc446f327c8e72c0c99aebd69fe9672c21.tar.gz gcc-fe6272cc446f327c8e72c0c99aebd69fe9672c21.tar.bz2 | |
syscall: emulate Flock on AIX
Reviewed-on: https://go-review.googlesource.com/79095
From-SVN: r255737
Diffstat (limited to 'libgo')
| -rw-r--r-- | libgo/go/syscall/libcall_aix.go | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libgo/go/syscall/libcall_aix.go b/libgo/go/syscall/libcall_aix.go index 072f92a..5afc65e 100644 --- a/libgo/go/syscall/libcall_aix.go +++ b/libgo/go/syscall/libcall_aix.go @@ -111,6 +111,28 @@ func Reboot(how int) (err error) { //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) //fchownat(dirfd _C_int, path *byte, owner Uid_t, group Gid_t, flags _C_int) _C_int +// On AIX, there is no flock() system call, we emulate it. +func Flock(fd int, op int) (err error) { + lk := &Flock_t{} + if (op & LOCK_UN) != 0 { + lk.Type = F_UNLCK + } else if (op & LOCK_EX) != 0 { + lk.Type = F_WRLCK + } else if (op & LOCK_SH) != 0 { + lk.Type = F_RDLCK + } else { + return nil + } + if (op & LOCK_NB) != 0 { + err = FcntlFlock(uintptr(fd), F_SETLK, lk) + if err != nil && (err == EAGAIN || err == EACCES) { + return EWOULDBLOCK + } + return err + } + return FcntlFlock(uintptr(fd), F_SETLKW, lk) +} + //sys Fstatfs(fd int, buf *Statfs_t) (err error) //fstatfs64(fd _C_int, buf *Statfs_t) _C_int |