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Fix SIGHUP on termination (Solaris patch 260-22964338)

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This fixes the following bug filed with Solaris: "22964338 ksh93
appears to send SIGHUP to unrelated processes on occasion". It is
fixed by applying this patch by Lijo George from the Solaris repo:
https://github.com/oracle/solaris-userland/blob/master/components/ksh93/patches/260-22964338.patch

The ksh2020 upstream rejected this, but if it's in production use
in Solaris, Solaris, it's probably good enough for 93u+m. If any
breakage is left, it can be fixed later.
https://github.com/att/ast/pull/1

src/cmd/ksh93/include/jobs.h,
src/cmd/ksh93/sh/fault.c,
src/cmd/ksh93/sh/jobs.c:
- Use a new job_hup() function instead of job_kill() to send SIGHUP
  to job processes on termination. The new function checks if a job
  is in fact still live before issuing SIGHUP to it.
This commit is contained in:
Martijn Dekker 2021-01-08 17:33:04 +00:00
parent ab98ec65e4
commit 62cf88d0df
3 changed files with 50 additions and 1 deletions
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2
src/cmd/ksh93/sh/fault.c
View file

@ -634,7 +634,7 @@ void sh_done(void *ptr, register int sig)
#endif
#ifdef JOBS
if((sh_isoption(SH_INTERACTIVE) && shp->login_sh) || (!sh_isoption(SH_INTERACTIVE) && (sig==SIGHUP)))
job_walk(sfstderr,job_terminate,SIGHUP,NIL(char**));
job_walk(sfstderr, job_hup, SIGHUP, NIL(char**));
#endif /* JOBS */
job_close(shp);
if(nv_search("VMTRACE", shp->var_tree,0))