libpreopen: Ignore trailing slashes when matching directory path names.

sunfishcode · sunfishcode · commit d5a609fe6392 · 2019-03-23T12:28:33.000-07:00
diff --git a/libc-bottom-half/libpreopen/lib/libpreopen.c b/libc-bottom-half/libpreopen/lib/libpreopen.c
@@ -181,6 +181,10 @@ po_isprefix(const char *dir, size_t dirlen, const char *path)
 		if (path[i] != dir[i])
 			return false;
 	}
+	// Ignore trailing slashes in directory names.
+	while (i > 0 && dir[i - 1] == '/') {
+		--i;
+	}
 	return path[i] == '/' || path[i] == '\0';
 }
 

Original file line number	Diff line number	Diff line change
`@@ -181,6 +181,10 @@ po_isprefix(const char dir, size_t dirlen, const char path)`
`181`	`181`	`if (path[i] != dir[i])`
`182`	`182`	`return false;`
`183`	`183`	`}`
	`184`	`+ // Ignore trailing slashes in directory names.`
	`185`	`+ while (i > 0 && dir[i - 1] == '/') {`
	`186`	`+ --i;`
	`187`	`+ }`
`184`	`188`	`return path[i] == '/' \|\| path[i] == '\0';`
`185`	`189`	`}`
`186`	`190`