diff options
Diffstat (limited to 'catgets/open_catalog.c')
| -rw-r--r-- | catgets/open_catalog.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/catgets/open_catalog.c b/catgets/open_catalog.c index e0694160e6..aaabc45fa3 100644 --- a/catgets/open_catalog.c +++ b/catgets/open_catalog.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996-2015 Free Software Foundation, Inc. +/* Copyright (C) 1996-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.org>. @@ -47,6 +47,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var, size_t tab_size; const char *lastp; int result = -1; + char *buf = NULL; if (strchr (cat_name, '/') != NULL || nlspath == NULL) fd = open_not_cancel_2 (cat_name, O_RDONLY); @@ -57,23 +58,23 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var, if (__glibc_unlikely (bufact + (n) >= bufmax)) \ { \ char *old_buf = buf; \ - bufmax += 256 + (n); \ - buf = (char *) alloca (bufmax); \ - memcpy (buf, old_buf, bufact); \ + bufmax += (bufmax < 256 + (n)) ? 256 + (n) : bufmax; \ + buf = realloc (buf, bufmax); \ + if (__glibc_unlikely (buf == NULL)) \ + { \ + free (old_buf); \ + return -1; \ + } \ } /* The RUN_NLSPATH variable contains a colon separated list of descriptions where we expect to find catalogs. We have to recognize certain % substitutions and stop when we found the first existing file. */ - char *buf; size_t bufact; - size_t bufmax; + size_t bufmax = 0; size_t len; - buf = NULL; - bufmax = 0; - fd = -1; while (*run_nlspath != '\0') { @@ -188,7 +189,10 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var, /* Avoid dealing with directories and block devices */ if (__builtin_expect (fd, 0) < 0) - return -1; + { + free (buf); + return -1; + } if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0) goto close_unlock_return; @@ -325,6 +329,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var, /* Release the lock again. */ close_unlock_return: close_not_cancel_no_status (fd); + free (buf); return result; } |