I verified using expirement that glibc wrapper getcwd actually never returns "(unreachable)".
Also I have read glibc sources for all 3 functions documented here.
All they don't return "(unreachable)".
Also I changed "pathname" to "pathnames".
Signed-off-by: Askar Safin <safinaskar@xxxxxxxxxxxx>
---
man/man3/getcwd.3 | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/man/man3/getcwd.3 b/man/man3/getcwd.3
index 685585a60..685a280a1 100644
--- a/man/man3/getcwd.3
+++ b/man/man3/getcwd.3
@@ -245,8 +245,10 @@ process (e.g., because the process set a new filesystem root using
without changing its current directory into the new root).
Such behavior can also be caused by an unprivileged user by changing
the current directory into another mount namespace.
-When dealing with pathname from untrusted sources, callers of the
-functions described in this page
+When dealing with pathnames from untrusted sources, callers of the
+raw
+.BR getcwd ()
+system call
should consider checking whether the returned pathname starts
with '/' or '(' to avoid misinterpreting an unreachable path
as a relative pathname.
--
2.39.5
