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example how to check write access to file

Stephen McQuay 2 years ago
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3 changed files with 49 additions and 0 deletions
  1. 27
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      license
  2. 20
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      main.go
  3. 2
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      readme.md

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license View File

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+Copyright (c) 2015, stephen mcquay
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+
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+All rights reserved.
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+
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+Redistribution and use in source and binary forms, with or without modification,
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+are permitted provided that the following conditions are met:
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+
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+    * Redistributions of source code must retain the above copyright notice,
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+      this list of conditions and the following disclaimer.
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+    * Redistributions in binary form must reproduce the above copyright notice,
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+      this list of conditions and the following disclaimer in the documentation
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+      and/or other materials provided with the distribution.
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+    * Neither the name of authpixious nor the names of its contributors
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+      may be used to endorse or promote products derived from this software
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+      without specific prior written permission.
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+
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+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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main.go View File

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+package main
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+
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+import (
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+	"fmt"
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+	"os"
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+
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+	"golang.org/x/sys/unix"
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+)
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+
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+func main() {
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+	if len(os.Args) != 2 {
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+		fmt.Fprintf(os.Stderr, "usage: access <path>\n")
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+		os.Exit(1)
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+	}
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+
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+	filename := os.Args[1]
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+	if err := unix.Access(filename, unix.W_OK); err != nil {
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+		fmt.Printf("%v: %v\n", filename, err)
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+	}
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+}

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readme.md View File

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+this is a simple example of how to check write access for a file/directory from
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+a Go program.

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