author | Mikael Berthe <mikael@lilotux.net> |
Sun, 16 Feb 2020 18:54:01 +0100 | |
changeset 251 | 1c52a0eeb952 |
parent 242 | 2a9ec03fe5a1 |
child 256 | 6d9efbef00a9 |
permissions | -rw-r--r-- |
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2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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// Copyright 2014 The Go Authors. All rights reserved. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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// Use of this source code is governed by a BSD-style |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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|
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// license that can be found in the LICENSE file. |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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251 | 5 |
// +build dragonfly freebsd linux netbsd openbsd |
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Mikael Berthe <mikael@lilotux.net>
parents:
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2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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package unix |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
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2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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import "unsafe" |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
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2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
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// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux |
251 | 12 |
// systems by fcntl_linux_32bit.go to be SYS_FCNTL64. |
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
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|
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var fcntl64Syscall uintptr = SYS_FCNTL |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
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251 | 15 |
func fcntl(fd int, cmd, arg int) (int, error) { |
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valptr, _, errno := Syscall(fcntl64Syscall, uintptr(fd), uintptr(cmd), uintptr(arg)) |
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
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var err error |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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if errno != 0 { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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err = errno |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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return int(valptr), err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
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} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
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251 | 24 |
// FcntlInt performs a fcntl syscall on fd with the provided command and argument. |
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func FcntlInt(fd uintptr, cmd, arg int) (int, error) { |
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return fcntl(int(fd), cmd, arg) |
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} |
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2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
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// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
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func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
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_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk))) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
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if errno == 0 { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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return nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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return errno |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
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} |