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doc/api
- fs.md
src
- node_constants.cc
test/parallel
- test-fs-constants.js

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`‎doc/api/fs.md‎`

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+17-1Lines changed: 17 additions & 1 deletion

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Original file line number	Diff line number	Diff line change
`@@ -6526,7 +6526,11 @@ operations.`
`6526`	`6526`
`6527`	`6527`	The following constants are exported by `fs.constants`.
`6528`	`6528`
`6529`		`-Not every constant will be available on every operating system.`
	`6529`	`+Not every constant will be available on every operating system;`
	`6530`	`+this is especially important for Windows, where many of the POSIX specific`
	`6531`	`+definitions are not available.`
	`6532`	`+For portable applications it is recommended to check for their presence`
	`6533`	`+before use.`
`6530`	`6534`
`6531`	`6535`	To use more than one constant, use the bitwise OR `\|` operator.
`6532`	`6536`
@@ -6579,6 +6583,8 @@ The following constants are meant for use as the `mode` parameter passed to
`6579`	`6583`	`</tr>`
`6580`	`6584`	`</table>`
`6581`	`6585`
	`6586`	`+The definitions are also available on Windows.`
	`6587`	`+`
`6582`	`6588`	`##### File copy constants`
`6583`	`6589`
`6584`	`6590`	The following constants are meant for use with [`fs.copyFile()`][].
@@ -6607,6 +6613,8 @@ The following constants are meant for use with [`fs.copyFile()`][].
`6607`	`6613`	`</tr>`
`6608`	`6614`	`</table>`
`6609`	`6615`
	`6616`	`+The definitions are also available on Windows.`
	`6617`	`+`
`6610`	`6618`	`##### File open constants`
`6611`	`6619`
`6612`	`6620`	The following constants are meant for use with `fs.open()`.
@@ -6701,6 +6709,9 @@ The following constants are meant for use with `fs.open()`.
`6701`	`6709`	`</tr>`
`6702`	`6710`	`</table>`
`6703`	`6711`
	`6712`	+On Windows, only `O_APPEND`, `O_CREAT`, `O_EXCL`, `O_RDONLY`, `O_RDWR`,
	`6713`	+`O_TRUNC`, `O_WRONLY` and `UV_FS_O_FILEMAP` are available.
	`6714`	`+`
`6704`	`6715`	`##### File type constants`
`6705`	`6716`
`6706`	`6717`	`The following constants are meant for use with the {fs.Stats} object's`
`@@ -6745,6 +6756,9 @@ The following constants are meant for use with the {fs.Stats} object's`
`6745`	`6756`	`</tr>`
`6746`	`6757`	`</table>`
`6747`	`6758`
	`6759`	+On Windows, only `S_IFCHR`, `S_IFDIR`, `S_IFLNK`, `S_IFMT`, and `S_IFREG`,
	`6760`	`+are available.`
	`6761`	`+`
`6748`	`6762`	`##### File mode constants`
`6749`	`6763`
`6750`	`6764`	`The following constants are meant for use with the {fs.Stats} object's`
`@@ -6805,6 +6819,8 @@ The following constants are meant for use with the {fs.Stats} object's`
`6805`	`6819`	`</tr>`
`6806`	`6820`	`</table>`
`6807`	`6821`
	`6822`	+On Windows, only `S_IRUSR` and `S_IWUSR` are available.
	`6823`	`+`
`6808`	`6824`	`## Notes`
`6809`	`6825`
`6810`	`6826`	`### Ordering of callback and promise-based operations`

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`‎src/node_constants.cc‎`

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+10Lines changed: 10 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -47,6 +47,16 @@`
`47`	`47`	`#include <dlfcn.h>`
`48`	`48`	`#endif`
`49`	`49`
	`50`	`+#if defined(_WIN32)`
	`51`	`+#include <io.h> // _S_IREAD _S_IWRITE`
	`52`	`+#ifndef S_IRUSR`
	`53`	`+#define S_IRUSR _S_IREAD`
	`54`	`+#endif // S_IRUSR`
	`55`	`+#ifndef S_IWUSR`
	`56`	`+#define S_IWUSR _S_IWRITE`
	`57`	`+#endif // S_IWUSR`
	`58`	`+#endif`
	`59`	`+`
`50`	`60`	`#include <cerrno>`
`51`	`61`	`#include <csignal>`
`52`	`62`	`#include <limits>`

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`‎test/parallel/test-fs-constants.js‎`

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+8Lines changed: 8 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,8 @@`
	`1`	`+'use strict';`
	`2`	`+require('../common');`
	`3`	`+const fs = require('fs');`
	`4`	`+const assert = require('assert');`
	`5`	`+`
	`6`	`+// Check if the two constants accepted by chmod() on Windows are defined.`
	`7`	`+assert.notStrictEqual(fs.constants.S_IRUSR, undefined);`
	`8`	`+assert.notStrictEqual(fs.constants.S_IWUSR, undefined);`

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