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-rw-r--r--stdlib/canonicalize.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c
index 0985e25..ea7883d 100644
--- a/stdlib/canonicalize.c
+++ b/stdlib/canonicalize.c
@@ -1,5 +1,5 @@
/* Return the canonical absolute name of a given file.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -122,6 +122,7 @@ canonicalize (const char *name, char *resolved)
if (S_ISLNK (st.st_mode))
{
char *buf = __alloca (path_max);
+ size_t len;
if (++num_links > MAXSYMLINKS)
{
@@ -137,21 +138,22 @@ canonicalize (const char *name, char *resolved)
if (!extra_buf)
extra_buf = __alloca (path_max);
- if ((long int) (n + strlen (end)) >= path_max)
+ len = strlen (end);
+ if ((long int) (n + len) >= path_max)
{
__set_errno (ENAMETOOLONG);
goto error;
}
- /* careful here, end may be a pointer into extra_buf... */
- strcat (buf, end);
+ /* Careful here, end may be a pointer into extra_buf... */
+ memcpy (&buf[n], end, len + 1);
strcpy (extra_buf, buf);
name = end = extra_buf;
if (buf[0] == '/')
- dest = rpath + 1; /* it's an absolute symlink */
+ dest = rpath + 1; /* It's an absolute symlink */
else
- /* back up to previous component, ignore if at root already: */
+ /* Back up to previous component, ignore if at root already: */
if (dest > rpath + 1)
while ((--dest)[-1] != '/');
}