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BASH PATCH REPORT
=================
Bash-Release: 5.3
Patch-ID: bash53-002
Bug-Reported-by:
Bug-Reference-ID:
Bug-Reference-URL: https://savannah.gnu.org/bugs/?67326
Bug-Description:
There are too many differences in the various implementations of shm_open(2)
to rely on it for bash's use.
Patch (apply with `patch -p0'):
*** ../bash-5.3-patched/lib/sh/anonfile.c Tue Jul 9 11:41:57 2024
--- lib/sh/anonfile.c Thu Jul 17 11:03:23 2025
***************
*** 26,30 ****
#include <bashtypes.h>
! #if defined (HAVE_MEMFD_CREATE) || defined (HAVE_SHM_OPEN) || defined (HAVE_SHM_MKSTEMP)
# include <sys/mman.h>
#endif
--- 26,30 ----
#include <bashtypes.h>
! #if defined (HAVE_MEMFD_CREATE) || defined (HAVE_SHM_MKSTEMP)
# include <sys/mman.h>
#endif
***************
*** 42,57 ****
#endif
! #if defined (HAVE_SHM_OPEN)
! #ifndef O_NOFOLLOW
! # define O_NOFOLLOW 0
! #endif
!
static int
- anonshmunlink (const char *fn)
- {
- return (shm_unlink (fn));
- }
-
- static int
anonshmopen (const char *name, int flags, char **fn)
{
--- 42,47 ----
#endif
! #if defined (HAVE_SHM_MKSTEMP)
static int
anonshmopen (const char *name, int flags, char **fn)
{
***************
*** 63,95 ****
*fn = 0;
- #if defined (HAVE_SHM_MKSTEMP)
fname = savestring ("/shm-XXXXXXXXXX");
fd = shm_mkstemp (fname);
if (fd < 0)
- free (fname);
- #endif
-
- if (fd < 0)
{
- fname = sh_mktmpname (name, flags);
- fd = shm_open (fname, O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW, 0600);
- }
-
- if (fd < 0)
- {
free (fname);
return fd;
}
- if (shm_unlink (fname) < 0)
- {
- int o;
- o = errno;
- free (fname);
- close (fd);
- errno = o;
- return -1;
- }
-
if (fn)
*fn = fname;
--- 53,64 ----
***************
*** 123,127 ****
flag = (name && *name == '/') ? MT_TEMPLATE : MT_USETMPDIR;
! #if defined (HAVE_SHM_OPEN)
fd = anonshmopen (name, flag, fn);
if (fd >= 0)
--- 92,96 ----
flag = (name && *name == '/') ? MT_TEMPLATE : MT_USETMPDIR;
! #if defined (HAVE_SHM_MKSTEMP)
fd = anonshmopen (name, flag, fn);
if (fd >= 0)
*** ../bash-5.3/patchlevel.h 2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h 2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 1
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 2
#endif /* _PATCHLEVEL_H_ */
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