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author | Andrzej Bialecki <abial@FreeBSD.org> | 1998-08-27 17:38:45 +0000 |
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committer | Andrzej Bialecki <abial@FreeBSD.org> | 1998-08-27 17:38:45 +0000 |
commit | c9d8fd0a7bb8ae40b9da7c52caec851ca9d0cf3e (patch) | |
tree | 0f9c1dcefca21fb605aaf84b621c2813f01fa5e4 /release/picobsd/tinyware/ash/error.h | |
parent | 0b0c1554a87b20eb1377566bce8833788ec96394 (diff) | |
download | src-c9d8fd0a7bb8ae40b9da7c52caec851ca9d0cf3e.tar.gz src-c9d8fd0a7bb8ae40b9da7c52caec851ca9d0cf3e.zip |
Initial import of PicoBSD v0.4 tree.
Notes
Notes:
svn path=/cvs2svn/branches/PICOBSD/; revision=38589
Diffstat (limited to 'release/picobsd/tinyware/ash/error.h')
-rw-r--r-- | release/picobsd/tinyware/ash/error.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/release/picobsd/tinyware/ash/error.h b/release/picobsd/tinyware/ash/error.h new file mode 100644 index 000000000000..d54ce6a7beb1 --- /dev/null +++ b/release/picobsd/tinyware/ash/error.h @@ -0,0 +1,108 @@ +/* $NetBSD: error.h,v 1.10 1997/07/04 21:01:55 christos Exp $ */ + +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)error.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * Types of operations (passed to the errmsg routine). + */ + +#define E_OPEN 01 /* opening a file */ +#define E_CREAT 02 /* creating a file */ +#define E_EXEC 04 /* executing a program */ + + +/* + * We enclose jmp_buf in a structure so that we can declare pointers to + * jump locations. The global variable handler contains the location to + * jump to when an exception occurs, and the global variable exception + * contains a code identifying the exeception. To implement nested + * exception handlers, the user should save the value of handler on entry + * to an inner scope, set handler to point to a jmploc structure for the + * inner scope, and restore handler on exit from the scope. + */ + +#include <setjmp.h> + +struct jmploc { + jmp_buf loc; +}; + +extern struct jmploc *handler; +extern int exception; + +/* exceptions */ +#define EXINT 0 /* SIGINT received */ +#define EXERROR 1 /* a generic error */ +#define EXSHELLPROC 2 /* execute a shell procedure */ +#define EXEXEC 3 /* command execution failed */ + + +/* + * These macros allow the user to suspend the handling of interrupt signals + * over a period of time. This is similar to SIGHOLD to or sigblock, but + * much more efficient and portable. (But hacking the kernel is so much + * more fun than worrying about efficiency and portability. :-)) + */ + +extern volatile int suppressint; +extern volatile int intpending; +extern char *commandname; /* name of command--printed on error */ + +#define INTOFF suppressint++ +#define INTON { if (--suppressint == 0 && intpending) onint(); } +#define FORCEINTON {suppressint = 0; if (intpending) onint();} +#define CLEAR_PENDING_INT intpending = 0 +#define int_pending() intpending + +void exraise __P((int)) __attribute__((__noreturn__)); +void onint __P((void)); +void error __P((char *, ...)) __attribute__((__noreturn__)); +void exerror __P((int, char *, ...)); +char *errmsg __P((int, int)); + + +/* + * BSD setjmp saves the signal mask, which violates ANSI C and takes time, + * so we use _setjmp instead. + */ + +#ifdef BSD +#define setjmp(jmploc) _setjmp(jmploc) +#define longjmp(jmploc, val) _longjmp(jmploc, val) +#endif |