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authorKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
commit487ca4806cc046076293cf6cc5fbba0db282bac7 (patch)
tree847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/web2c/lib/coredump.c
parenta3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff)
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/lib/coredump.c')
-rw-r--r--Build/source/texk/web2c/lib/coredump.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/lib/coredump.c b/Build/source/texk/web2c/lib/coredump.c
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+++ b/Build/source/texk/web2c/lib/coredump.c
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+/* coredump.c. Public domain.
+
+ This procedure is due to Chris Torek, chris@umd.edu. It makes a core
+ dump without any sort of error status (abort(2) does return an error
+ status, so we don't want to use that). It is used only when making a
+ preloaded TeX from virtex, and is triggered by a magic file name
+ requested as input (see `open_input', above). Finding a way to
+ reconstitute the core dump into a binary (i.e., with undump) is up to
+ you. Perl has some things to say about these days. */
+
+#include "config.h"
+
+/* Do not try to compile this Unix-y unportable stuff unless it's needed. */
+
+#ifdef FUNNY_CORE_DUMP
+#include <signal.h>
+#include <sys/wait.h>
+
+void
+funny_core_dump P1H(void)
+{
+#ifdef __EMX__
+ {
+ int handle = open ("core", O_WRONLY | O_CREAT | O_TRUNC | O_BINARY);
+ if (handle >= 0 && _core (handle) == 0)
+ exit (0);
+ (void) write (2, "attempt to dump core failed\n", 28);
+ exit (1);
+ }
+#else /* !__EMX__ */
+ int pid, w;
+ union wait status;
+
+ switch (pid = fork ())
+ {
+ case -1: /* failed */
+ perror ("vfork");
+ exit (-1);
+ /*NOTREACHED*/
+
+ case 0: /* child */
+ (void) signal (SIGQUIT, SIG_DFL);
+ (void) kill (getpid (), SIGQUIT);
+ (void) write (2, "how did we get here?\n", 21);
+ _exit (1);
+ /*NOTREACHED*/
+
+ default: /* parent */
+ while ((w = wait (&status)) != pid && w != -1)
+ ;
+ if (status.w_coredump)
+ exit (0);
+ (void) write (2, "attempt to dump core failed\n", 28);
+ exit (1);
+ }
+#endif /* not __EMX__ */
+}
+#endif /* FUNNY_CORE_DUMP */