95 lines
2.0 KiB
Plaintext
95 lines
2.0 KiB
Plaintext
|
--- sh.c
|
||
|
|
+++ sh.c 25 Feb 2009 22:53:47 -0000
|
||
|
|
@@ -1103,17 +1103,7 @@
|
||
|
|
}
|
||
|
|
#endif /* NeXT */
|
||
|
|
#ifdef BSDJOBS /* if we have tty job control */
|
||
|
|
- retry:
|
||
|
|
- if ((tpgrp = tcgetpgrp(f)) != -1) {
|
||
|
|
- if (tpgrp != shpgrp) {
|
||
|
|
- struct sigaction old;
|
||
|
|
-
|
||
|
|
- sigaction(SIGTTIN, NULL, &old);
|
||
|
|
- signal(SIGTTIN, SIG_DFL);
|
||
|
|
- (void) kill(0, SIGTTIN);
|
||
|
|
- sigaction(SIGTTIN, &old, NULL);
|
||
|
|
- goto retry;
|
||
|
|
- }
|
||
|
|
+ if (grabpgrp(f, shpgrp) != -1) {
|
||
|
|
/*
|
||
|
|
* Thanks to Matt Day for the POSIX references, and to
|
||
|
|
* Paul Close for the SGI clarification.
|
||
|
|
@@ -2356,3 +2346,28 @@
|
||
|
|
rechist(NULL, adrof(STRsavehist) != NULL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
+
|
||
|
|
+/*
|
||
|
|
+ * Grab the tty repeatedly, and give up if we are not in the correct
|
||
|
|
+ * tty process group.
|
||
|
|
+ */
|
||
|
|
+int
|
||
|
|
+grabpgrp(int fd, pid_t desired)
|
||
|
|
+{
|
||
|
|
+ struct sigaction old;
|
||
|
|
+ pid_t pgrp;
|
||
|
|
+ size_t i;
|
||
|
|
+
|
||
|
|
+ for (i = 0; i < 100; i++) {
|
||
|
|
+ if ((pgrp = tcgetpgrp(fd)) == -1)
|
||
|
|
+ return -1;
|
||
|
|
+ if (pgrp == desired)
|
||
|
|
+ return 0;
|
||
|
|
+ (void)sigaction(SIGTTIN, NULL, &old);
|
||
|
|
+ (void)signal(SIGTTIN, SIG_DFL);
|
||
|
|
+ (void)kill(0, SIGTTIN);
|
||
|
|
+ (void)sigaction(SIGTTIN, &old, NULL);
|
||
|
|
+ }
|
||
|
|
+ errno = EPERM;
|
||
|
|
+ return -1;
|
||
|
|
+}
|
||
|
|
--- sh.decls.h
|
||
|
|
+++ sh.decls.h 25 Feb 2009 22:53:47 -0000
|
||
|
|
@@ -52,6 +52,7 @@
|
||
|
|
#else
|
||
|
|
extern void xexit (int);
|
||
|
|
#endif
|
||
|
|
+extern int grabpgrp (int, pid_t);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* sh.dir.c
|
||
|
|
--- sh.func.c
|
||
|
|
+++ sh.func.c 25 Feb 2009 22:53:47 -0000
|
||
|
|
@@ -2272,10 +2272,9 @@
|
||
|
|
dosuspend(Char **v, struct command *c)
|
||
|
|
{
|
||
|
|
#ifdef BSDJOBS
|
||
|
|
- int ctpgrp;
|
||
|
|
struct sigaction old;
|
||
|
|
#endif /* BSDJOBS */
|
||
|
|
-
|
||
|
|
+
|
||
|
|
USE(c);
|
||
|
|
USE(v);
|
||
|
|
|
||
|
|
@@ -2295,17 +2294,8 @@
|
||
|
|
|
||
|
|
#ifdef BSDJOBS
|
||
|
|
if (tpgrp != -1) {
|
||
|
|
-retry:
|
||
|
|
- ctpgrp = tcgetpgrp(FSHTTY);
|
||
|
|
- if (ctpgrp == -1)
|
||
|
|
+ if (grabpgrp(FSHTTY, opgrp) == -1)
|
||
|
|
stderror(ERR_SYSTEM, "tcgetpgrp", strerror(errno));
|
||
|
|
- if (ctpgrp != opgrp) {
|
||
|
|
- sigaction(SIGTTIN, NULL, &old);
|
||
|
|
- signal(SIGTTIN, SIG_DFL);
|
||
|
|
- (void) kill(0, SIGTTIN);
|
||
|
|
- sigaction(SIGTTIN, &old, NULL);
|
||
|
|
- goto retry;
|
||
|
|
- }
|
||
|
|
(void) setpgid(0, shpgrp);
|
||
|
|
(void) tcsetpgrp(FSHTTY, shpgrp);
|
||
|
|
}
|
||
|
|
|