Commit b92c0cb
fs: fix realpath inode link caching
The `fs.realpath` / `fs.realpathSync` cache already seen symbolic links
using the inode number which may be longer that max supported
JS number (2**53) and will therefore be incorrectly handled by possibly
entering infinite loop of calling stat on the same node.
This PR changes those functions (where appropriate) to use
bigint for inode numbers.
Fixes: #33936
PR-URL: #33945
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>1 parent 2e38f0d commit b92c0cb
1 file changed
Lines changed: 7 additions & 3 deletions
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
@@ -27,6 +27,7 @@ | |||
| 27 | 27 | const { | |
| 28 | 28 | Map, | |
| 29 | 29 | MathMax, | |
| 30 | + Number, | ||
| 30 | 31 | NumberIsSafeInteger, | |
| 31 | 32 | ObjectCreate, | |
| 32 | 33 | ObjectDefineProperties, | |
@@ -174,7 +175,10 @@ const isFd = isUint32; | |||
| 174 | 175 | function isFileType(stats, fileType) { | |
| 175 | 176 | // Use stats array directly to avoid creating an fs.Stats instance just for | |
| 176 | 177 | // our internal use. | |
| 177 | - return (stats[1/* mode */] & S_IFMT) === fileType; | ||
| 178 | + let mode = stats[1]; | ||
| 179 | + if (typeof mode === 'bigint') | ||
| 180 | + mode = Number(mode); | ||
| 181 | + return (mode & S_IFMT) === fileType; | ||
| 178 | 182 | } | |
| 179 | 183 | ||
| 180 | 184 | function access(path, mode, callback) { | |
@@ -1614,7 +1618,7 @@ function realpathSync(p, options) { | |||
| 1614 | 1618 | ||
| 1615 | 1619 | const baseLong = pathModule.toNamespacedPath(base); | |
| 1616 | 1620 | const ctx = { path: base }; | |
| 1617 | - const stats = binding.lstat(baseLong, false, undefined, ctx); | ||
| 1621 | + const stats = binding.lstat(baseLong, true, undefined, ctx); | ||
| 1618 | 1622 | handleErrorFromBinding(ctx); | |
| 1619 | 1623 | ||
| 1620 | 1624 | if (!isFileType(stats, S_IFLNK)) { | |
@@ -1747,7 +1751,7 @@ function realpath(p, options, callback) { | |||
| 1747 | 1751 | return process.nextTick(LOOP); | |
| 1748 | 1752 | } | |
| 1749 | 1753 | ||
| 1750 | - return fs.lstat(base, gotStat); | ||
| 1754 | + return fs.lstat(base, { bigint: true }, gotStat); | ||
| 1751 | 1755 | } | |
| 1752 | 1756 | ||
| 1753 | 1757 | function gotStat(err, stats) { | |
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