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sh: Abort a wait builtin on any trapped signal.

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This is required by POSIX.

PR:		197210
Reported by:	ache
MFC after:	2 weeks
This commit is contained in:
Jilles Tjoelker 2015-01-31 13:53:29 +00:00
parent f1a90a7bac
commit edebe56497
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277973
2 changed files with 6 additions and 5 deletions
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8
bin/sh/jobs.c
View File

@ -87,8 +87,8 @@ static int ttyfd = -1;
/* mode flags for dowait */
#define DOWAIT_BLOCK 0x1 /* wait until a child exits */
#define DOWAIT_SIG 0x2 /* if DOWAIT_BLOCK, abort on SIGINT/SIGQUIT */
#define DOWAIT_SIG_ANY 0x4 /* if DOWAIT_SIG, abort on any signal */
#define DOWAIT_SIG 0x2 /* if DOWAIT_BLOCK, abort on signal */
#define DOWAIT_SIG_TRAP 0x4 /* if DOWAIT_SIG, abort on trapped signal only */
#if JOBS
static void restartjob(struct job *);
@ -1028,7 +1028,7 @@ waitforjob(struct job *jp, int *origstatus)
TRACE(("waitforjob(%%%td) called\n", jp - jobtab + 1));
while (jp->state == 0)
if (dowait(DOWAIT_BLOCK | (Tflag ? DOWAIT_SIG |
DOWAIT_SIG_ANY : 0), jp) == -1)
DOWAIT_SIG_TRAP : 0), jp) == -1)
dotrap();
#if JOBS
if (jp->jobctl) {
@ -1120,7 +1120,7 @@ dowait(int mode, struct job *job)
TRACE(("wait returns %d, status=%d\n", (int)pid, status));
if (pid == 0 && (mode & DOWAIT_SIG) != 0) {
pid = -1;
if (((mode & DOWAIT_SIG_ANY) != 0 ?
if (((mode & DOWAIT_SIG_TRAP) != 0 ?
pendingsig : pendingsig_waitcmd) != 0) {
errno = EINTR;
break;

3
bin/sh/trap.c
View File

@ -74,7 +74,7 @@ __FBSDID("$FreeBSD$");
static char sigmode[NSIG]; /* current value of signal */
volatile sig_atomic_t pendingsig; /* indicates some signal received */
volatile sig_atomic_t pendingsig_waitcmd; /* indicates SIGINT/SIGQUIT received */
volatile sig_atomic_t pendingsig_waitcmd; /* indicates wait builtin should be interrupted */
static int in_dotrap; /* do we execute in a trap handler? */
static char *volatile trap[NSIG]; /* trap handler commands */
static volatile sig_atomic_t gotsig[NSIG];
@ -400,6 +400,7 @@ onsig(int signo)
(signo != SIGCHLD || !ignore_sigchld)) {
gotsig[signo] = 1;
pendingsig = signo;
pendingsig_waitcmd = signo;
}
}