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| author | Andreas Schwab <schwab@redhat.com> | 2010-03-12 07:57:19 -0800 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2010-03-12 07:57:19 -0800 |
| commit | 4c35fb65c9ea221561bc5698358944a73383b3d6 (patch) | |
| tree | 1fb3ee431e41549383b05c04ff227f04018490a1 /elf/dl-dst.h | |
| parent | 4bf7d392453cbcbd65b36c054e1fdbdb1590def7 (diff) | |
| download | glibc-4c35fb65c9ea221561bc5698358944a73383b3d6.tar.gz glibc-4c35fb65c9ea221561bc5698358944a73383b3d6.tar.xz glibc-4c35fb65c9ea221561bc5698358944a73383b3d6.zip | |
Don't underestimate length of DST substitution
Diffstat (limited to 'elf/dl-dst.h')
| -rw-r--r-- | elf/dl-dst.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/elf/dl-dst.h b/elf/dl-dst.h index 76076a6036..ae8d119c0d 100644 --- a/elf/dl-dst.h +++ b/elf/dl-dst.h @@ -18,6 +18,8 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include "trusted-dirs.h" + /* Determine the number of DST elements in the name. Only if IS_PATH is nonzero paths are recognized (i.e., multiple, ':' separated filenames). */ #define DL_DST_COUNT(name, is_path) \ @@ -39,12 +41,13 @@ \ if (__cnt > 0) \ { \ - size_t origin_len; \ + size_t dst_len; \ /* Now we make a guess how many extra characters on top of the \ length of S we need to represent the result. We know that \ we have CNT replacements. Each at most can use \ - MAX (strlen (ORIGIN), strlen (_dl_platform)) \ - minus 7 (which is the length of "$ORIGIN"). \ + MAX (MAX (strlen (ORIGIN), strlen (_dl_platform)), \ + strlen (DL_DST_LIB)) \ + minus 4 (which is the length of "$LIB"). \ \ First get the origin string if it is not available yet. \ This can only happen for the map of the executable. */ \ @@ -53,14 +56,16 @@ { \ assert ((l)->l_name[0] == '\0'); \ (l)->l_origin = _dl_get_origin (); \ - origin_len = ((l)->l_origin && (l)->l_origin != (char *) -1 \ + dst_len = ((l)->l_origin && (l)->l_origin != (char *) -1 \ ? strlen ((l)->l_origin) : 0); \ } \ else \ - origin_len = (l)->l_origin == (char *) -1 \ + dst_len = (l)->l_origin == (char *) -1 \ ? 0 : strlen ((l)->l_origin); \ - \ - __len += __cnt * (MAX (origin_len, GLRO(dl_platformlen)) - 7); \ + dst_len = MAX (MAX (dst_len, GLRO(dl_platformlen)), \ + strlen (DL_DST_LIB)); \ + if (dst_len > 4) \ + __len += __cnt * (dst_len - 4); \ } \ \ __len; }) @@ -72,7 +77,7 @@ if ((l) == NULL) \ { \ const char *origin = _dl_get_origin (); \ - origin_len = (origin && origin != (char *) -1 ? strlen (origin) : 0); \ + dst_len = (origin && origin != (char *) -1 ? strlen (origin) : 0); \ } \ else #endif |