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289 lines
6.3 KiB
289 lines
6.3 KiB
BASH PATCH REPORT
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=================
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Bash-Release: 5.0
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Patch-ID: bash50-017
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Bug-Reported-by: Valentin Lab <valentin.lab@kalysto.org>
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Bug-Reference-ID: <ab981b9c-60a5-46d0-b7e6-a6d88b80df50@kalysto.org>
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Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-bash/2020-03/msg00062.html
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Bug-Description:
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There were cases where patch 16 reaped process substitution file descriptors
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(or FIFOs) and processes to early. This is a better fix for the problem that
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bash50-016 attempted to solve.
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Patch (apply with `patch -p0'):
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*** a/subst.c 2019-08-29 11:16:49.000000000 -0400
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--- b/subst.c 2020-04-02 16:24:19.000000000 -0400
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***************
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*** 5337,5341 ****
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}
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! char *
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copy_fifo_list (sizep)
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int *sizep;
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--- 5337,5341 ----
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}
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! void *
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copy_fifo_list (sizep)
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int *sizep;
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***************
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*** 5343,5347 ****
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if (sizep)
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*sizep = 0;
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! return (char *)NULL;
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}
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--- 5343,5347 ----
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if (sizep)
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*sizep = 0;
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! return (void *)NULL;
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}
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***************
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*** 5409,5414 ****
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if (fifo_list[i].file)
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{
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! fifo_list[j].file = fifo_list[i].file;
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! fifo_list[j].proc = fifo_list[i].proc;
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j++;
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}
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--- 5409,5419 ----
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if (fifo_list[i].file)
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{
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! if (i != j)
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! {
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! fifo_list[j].file = fifo_list[i].file;
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! fifo_list[j].proc = fifo_list[i].proc;
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! fifo_list[i].file = (char *)NULL;
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! fifo_list[i].proc = 0;
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! }
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j++;
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}
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***************
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*** 5426,5433 ****
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void
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close_new_fifos (list, lsize)
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! char *list;
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int lsize;
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{
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int i;
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if (list == 0)
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--- 5431,5439 ----
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void
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close_new_fifos (list, lsize)
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! void *list;
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int lsize;
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{
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int i;
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+ char *plist;
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if (list == 0)
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***************
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*** 5437,5442 ****
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}
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! for (i = 0; i < lsize; i++)
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! if (list[i] == 0 && i < fifo_list_size && fifo_list[i].proc != -1)
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unlink_fifo (i);
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--- 5443,5448 ----
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}
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! for (plist = (char *)list, i = 0; i < lsize; i++)
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! if (plist[i] == 0 && i < fifo_list_size && fifo_list[i].proc != -1)
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unlink_fifo (i);
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***************
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*** 5560,5568 ****
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}
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! char *
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copy_fifo_list (sizep)
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int *sizep;
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{
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! char *ret;
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if (nfds == 0 || totfds == 0)
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--- 5566,5574 ----
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}
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! void *
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copy_fifo_list (sizep)
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int *sizep;
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{
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! void *ret;
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if (nfds == 0 || totfds == 0)
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***************
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*** 5570,5579 ****
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if (sizep)
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*sizep = 0;
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! return (char *)NULL;
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}
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if (sizep)
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*sizep = totfds;
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! ret = (char *)xmalloc (totfds * sizeof (pid_t));
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return (memcpy (ret, dev_fd_list, totfds * sizeof (pid_t)));
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}
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--- 5576,5585 ----
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if (sizep)
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*sizep = 0;
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! return (void *)NULL;
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}
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if (sizep)
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*sizep = totfds;
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! ret = xmalloc (totfds * sizeof (pid_t));
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return (memcpy (ret, dev_fd_list, totfds * sizeof (pid_t)));
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}
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***************
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*** 5648,5655 ****
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void
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close_new_fifos (list, lsize)
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! char *list;
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int lsize;
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{
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int i;
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if (list == 0)
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--- 5654,5662 ----
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void
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close_new_fifos (list, lsize)
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! void *list;
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int lsize;
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{
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int i;
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+ pid_t *plist;
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if (list == 0)
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***************
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*** 5659,5664 ****
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}
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! for (i = 0; i < lsize; i++)
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! if (list[i] == 0 && i < totfds && dev_fd_list[i])
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unlink_fifo (i);
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--- 5666,5671 ----
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}
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! for (plist = (pid_t *)list, i = 0; i < lsize; i++)
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! if (plist[i] == 0 && i < totfds && dev_fd_list[i])
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unlink_fifo (i);
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*** a/subst.h 2018-10-21 18:46:09.000000000 -0400
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--- b/subst.h 2020-04-02 16:29:28.000000000 -0400
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***************
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*** 274,280 ****
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extern void unlink_fifo __P((int));
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! extern char *copy_fifo_list __P((int *));
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! extern void unlink_new_fifos __P((char *, int));
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! extern void close_new_fifos __P((char *, int));
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extern void clear_fifo_list __P((void));
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--- 274,279 ----
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extern void unlink_fifo __P((int));
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! extern void *copy_fifo_list __P((int *));
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! extern void close_new_fifos __P((void *, int));
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extern void clear_fifo_list __P((void));
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*** a/execute_cmd.c 2020-02-06 20:16:48.000000000 -0500
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--- b/execute_cmd.c 2020-04-02 17:00:10.000000000 -0400
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***************
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*** 565,569 ****
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#if defined (PROCESS_SUBSTITUTION)
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volatile int ofifo, nfifo, osize, saved_fifo;
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! volatile char *ofifo_list;
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#endif
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--- 565,569 ----
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#if defined (PROCESS_SUBSTITUTION)
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volatile int ofifo, nfifo, osize, saved_fifo;
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! volatile void *ofifo_list;
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#endif
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***************
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*** 751,760 ****
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# endif
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! if (variable_context != 0) /* XXX - also if sourcelevel != 0? */
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{
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ofifo = num_fifos ();
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ofifo_list = copy_fifo_list ((int *)&osize);
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begin_unwind_frame ("internal_fifos");
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! add_unwind_protect (xfree, ofifo_list);
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saved_fifo = 1;
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}
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--- 751,762 ----
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# endif
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! /* XXX - also if sourcelevel != 0? */
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! if (variable_context != 0)
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{
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ofifo = num_fifos ();
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ofifo_list = copy_fifo_list ((int *)&osize);
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begin_unwind_frame ("internal_fifos");
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! if (ofifo_list)
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! add_unwind_protect (xfree, ofifo_list);
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saved_fifo = 1;
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}
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***************
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*** 1100,1123 ****
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nfifo = num_fifos ();
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if (nfifo > ofifo)
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! close_new_fifos ((char *)ofifo_list, osize);
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free ((void *)ofifo_list);
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discard_unwind_frame ("internal_fifos");
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}
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- # if defined (HAVE_DEV_FD)
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- /* Reap process substitutions at the end of loops */
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- switch (command->type)
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- {
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- case cm_while:
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- case cm_until:
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- case cm_for:
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- case cm_group:
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- # if defined (ARITH_FOR_COMMAND)
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- case cm_arith_for:
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- # endif
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- reap_procsubs ();
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- default:
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- break;
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- }
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- # endif /* HAVE_DEV_FD */
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#endif
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--- 1102,1109 ----
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nfifo = num_fifos ();
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if (nfifo > ofifo)
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! close_new_fifos ((void *)ofifo_list, osize);
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free ((void *)ofifo_list);
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discard_unwind_frame ("internal_fifos");
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}
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#endif
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*** a/patchlevel.h 2016-06-22 14:51:03.000000000 -0400
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--- b/patchlevel.h 2016-10-01 11:01:28.000000000 -0400
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 16
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 17
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#endif /* _PATCHLEVEL_H_ */
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