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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
commit29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc (patch)
tree63ef546b10a81d461e5cf5ed9e98a68cd7dee1aa /src/kash/error.c
parentInitial commit. (diff)
downloadkbuild-29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc.tar.xz
kbuild-29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc.zip
Adding upstream version 1:0.1.9998svn3589+dfsg.upstream/1%0.1.9998svn3589+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/kash/error.c')
-rw-r--r--src/kash/error.c394
1 files changed, 394 insertions, 0 deletions
diff --git a/src/kash/error.c b/src/kash/error.c
new file mode 100644
index 0000000..267f8ff
--- /dev/null
+++ b/src/kash/error.c
@@ -0,0 +1,394 @@
+/* $NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc 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. 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.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)error.c 8.2 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: error.c,v 1.31 2003/08/07 09:05:30 agc Exp $");
+#endif /* not lint */
+#endif
+
+/*
+ * Errors and exceptions.
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "shell.h"
+#include "main.h"
+#include "options.h"
+#include "output.h"
+#include "error.h"
+#include "show.h"
+#include "shinstance.h"
+
+
+/*
+ * Code to handle exceptions in C.
+ */
+
+/*struct jmploc *handler;
+int exception;
+volatile int suppressint;
+volatile int intpending;
+char *commandname;*/
+
+SH_NORETURN_1
+static void exverror(shinstance *psh, int, const char *, va_list) SH_NORETURN_2;
+
+/*
+ * Called to raise an exception. Since C doesn't include exceptions, we
+ * just do a longjmp to the exception handler. The type of exception is
+ * stored in the global variable "exception".
+ */
+
+SH_NORETURN_1 void
+exraise(shinstance *psh, int e)
+{
+ if (psh->handler == NULL)
+ sh_abort(psh);
+ psh->exception = e;
+ longjmp(psh->handler->loc, 1);
+}
+
+
+/*
+ * Called from trap.c when a SIGINT is received. (If the user specifies
+ * that SIGINT is to be trapped or ignored using the trap builtin, then
+ * this routine is not called.) Suppressint is nonzero when interrupts
+ * are held using the INTOFF macro. The call to _exit is necessary because
+ * there is a short period after a fork before the signal handlers are
+ * set to the appropriate value for the child. (The test for iflag is
+ * just defensive programming.)
+ */
+
+void
+onint(shinstance *psh)
+{
+ shsigset_t nsigset;
+
+ if (psh->suppressint) {
+ psh->intpending = 1;
+ return;
+ }
+ psh->intpending = 0;
+ sh_sigemptyset(&nsigset);
+ sh_sigprocmask(psh, SIG_SETMASK, &nsigset, NULL);
+ if (psh->rootshell && iflag(psh))
+ exraise(psh, EXINT);
+ else {
+ sh_signal(psh, SIGINT, SH_SIG_DFL);
+ sh_raise_sigint(psh);/*raise(psh, SIGINT);*/
+ }
+ /* NOTREACHED */
+}
+
+static void
+exvwarning(shinstance *psh, int sv_errno, const char *msg, va_list ap)
+{
+ /* Partially emulate line buffered output so that:
+ * printf '%d\n' 1 a 2
+ * and
+ * printf '%d %d %d\n' 1 a 2
+ * both generate sensible text when stdout and stderr are merged.
+ */
+ if (psh->output.nextc != psh->output.buf && psh->output.nextc[-1] == '\n')
+ flushout(&psh->output);
+ if (psh->commandname)
+ outfmt(&psh->errout, "%s: ", psh->commandname);
+ if (msg != NULL) {
+ doformat(&psh->errout, msg, ap);
+ if (sv_errno >= 0)
+ outfmt(&psh->errout, ": ");
+ }
+ if (sv_errno >= 0)
+ outfmt(&psh->errout, "%s", sh_strerror(psh, sv_errno));
+ out2c(psh, '\n');
+ flushout(&psh->errout);
+}
+
+/*
+ * Exverror is called to raise the error exception. If the second argument
+ * is not NULL then error prints an error message using printf style
+ * formatting. It then raises the error exception.
+ */
+static void
+exverror(shinstance *psh, int cond, const char *msg, va_list ap)
+{
+ CLEAR_PENDING_INT;
+ INTOFF;
+
+#ifdef DEBUG
+ if (msg) {
+ va_list va2;
+ TRACE((psh, "exverror(%d, \"", cond));
+# ifdef va_copy /* MSC 2010 still doesn't have va_copy. sigh. */
+ va_copy(va2, ap);
+# else
+ va2 = ap;
+# endif
+ TRACEV((psh, msg, va2));
+ va_end(va2);
+ TRACE((psh, "\") pid=%" SHPID_PRI "\n", sh_getpid(psh)));
+ } else
+ TRACE((psh, "exverror(%d, NULL) pid=%" SHPID_PRI "\n", cond, sh_getpid(psh)));
+#endif
+ if (msg)
+ exvwarning(psh, -1, msg, ap);
+
+ output_flushall(psh);
+ exraise(psh, cond);
+ /* NOTREACHED */
+}
+
+
+SH_NORETURN_1 void
+error(shinstance *psh, const char *msg, ...)
+{
+ va_list ap;
+
+ va_start(ap, msg);
+ exverror(psh, EXERROR, msg, ap);
+ /* NOTREACHED */
+ va_end(ap);
+}
+
+
+SH_NORETURN_1 void
+exerror(shinstance *psh, int cond, const char *msg, ...)
+{
+ va_list ap;
+
+ va_start(ap, msg);
+ exverror(psh, cond, msg, ap);
+ /* NOTREACHED */
+ va_end(ap);
+}
+
+/*
+ * error/warning routines for external builtins
+ */
+
+SH_NORETURN_1 void
+sh_exit(shinstance *psh, int rval)
+{
+ psh->exerrno = rval & 255;
+ exraise(psh, EXEXEC);
+}
+
+SH_NORETURN_1 void
+sh_err(shinstance *psh, int status, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ exvwarning(psh, errno, fmt, ap);
+ va_end(ap);
+ sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_verr(shinstance *psh, int status, const char *fmt, va_list ap)
+{
+ exvwarning(psh, errno, fmt, ap);
+ sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_errx(shinstance *psh, int status, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ exvwarning(psh, -1, fmt, ap);
+ va_end(ap);
+ sh_exit(psh, status);
+}
+
+SH_NORETURN_1 void
+sh_verrx(shinstance *psh, int status, const char *fmt, va_list ap)
+{
+ exvwarning(psh, -1, fmt, ap);
+ sh_exit(psh, status);
+}
+
+void
+sh_warn(shinstance *psh, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ exvwarning(psh, errno, fmt, ap);
+ va_end(ap);
+}
+
+void
+sh_vwarn(shinstance *psh, const char *fmt, va_list ap)
+{
+ exvwarning(psh, errno, fmt, ap);
+}
+
+void
+sh_warnx(shinstance *psh, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ exvwarning(psh, -1, fmt, ap);
+ va_end(ap);
+}
+
+void
+sh_vwarnx(shinstance *psh, const char *fmt, va_list ap)
+{
+ exvwarning(psh, -1, fmt, ap);
+}
+
+
+/*
+ * Table of error messages.
+ */
+
+struct errname {
+ short errcode; /* error number */
+ short action; /* operation which encountered the error */
+ const char *msg; /* text describing the error */
+};
+
+
+#define ALL (E_OPEN|E_CREAT|E_EXEC)
+
+STATIC const struct errname errormsg[] = {
+ { EINTR, ALL, "interrupted" },
+ { EACCES, ALL, "permission denied" },
+ { EIO, ALL, "I/O error" },
+ { EEXIST, ALL, "file exists" },
+ { ENOENT, E_OPEN, "no such file" },
+ { ENOENT, E_CREAT,"directory nonexistent" },
+ { ENOENT, E_EXEC, "not found" },
+ { ENOTDIR, E_OPEN, "no such file" },
+ { ENOTDIR, E_CREAT,"directory nonexistent" },
+ { ENOTDIR, E_EXEC, "not found" },
+ { EISDIR, ALL, "is a directory" },
+#ifdef EMFILE
+ { EMFILE, ALL, "too many open files" },
+#endif
+ { ENFILE, ALL, "file table overflow" },
+ { ENOSPC, ALL, "file system full" },
+#ifdef EDQUOT
+ { EDQUOT, ALL, "disk quota exceeded" },
+#endif
+#ifdef ENOSR
+ { ENOSR, ALL, "no streams resources" },
+#endif
+ { ENXIO, ALL, "no such device or address" },
+ { EROFS, ALL, "read-only file system" },
+#ifdef ETXTBSY
+ { ETXTBSY, ALL, "text busy" },
+#endif
+#ifdef EAGAIN
+ { EAGAIN, E_EXEC, "not enough memory" },
+#endif
+ { ENOMEM, ALL, "not enough memory" },
+#ifdef ENOLINK
+ { ENOLINK, ALL, "remote access failed" },
+#endif
+#ifdef EMULTIHOP
+ { EMULTIHOP, ALL, "remote access failed" },
+#endif
+#ifdef ECOMM
+ { ECOMM, ALL, "remote access failed" },
+#endif
+#ifdef ESTALE
+ { ESTALE, ALL, "remote access failed" },
+#endif
+#ifdef ETIMEDOUT
+ { ETIMEDOUT, ALL, "remote access failed" },
+#endif
+#ifdef ELOOP
+ { ELOOP, ALL, "symbolic link loop" },
+#endif
+ { E2BIG, E_EXEC, "argument list too long" },
+#ifdef ELIBACC
+ { ELIBACC, E_EXEC, "shared library missing" },
+#endif
+ { 0, 0, NULL },
+};
+
+
+/*
+ * Return a string describing an error. The returned string may be a
+ * pointer to a static buffer that will be overwritten on the next call.
+ * Action describes the operation that got the error.
+ */
+
+const char *
+errmsg(shinstance *psh, int e, int action)
+{
+ struct errname const *ep;
+ /*static char buf[12];*/
+
+ for (ep = errormsg ; ep->errcode ; ep++) {
+ if (ep->errcode == e && (ep->action & action) != 0)
+ return ep->msg;
+ }
+ fmtstr(psh->errmsg_buf, sizeof psh->errmsg_buf, "error %d", e);
+ return psh->errmsg_buf;
+}
+
+
+#ifdef K_STRICT
+
+KHLP_DECL(void) kHlpAssertMsg1(const char *pszExpr, const char *pszFile, unsigned iLine, const char *pszFunction)
+{
+ shinstance *psh = shthread_get_shell();
+
+ TRACE((psh, "Assertion failed in %s --- %s --- %s(%u)\n", pszFunction, pszExpr, pszFile, iLine));
+ dprintf(psh, "Assertion failed in %s --- %s --- %s(%u)\n", pszFunction, pszExpr, pszFile, iLine);
+}
+
+KHLP_DECL(void) kHlpAssertMsg2(const char *pszFormat, ...)
+{
+ shinstance *psh = shthread_get_shell();
+ va_list va;
+ va_start(va, pszFormat);
+ doformat(psh->out2, pszFormat, va);
+ va_end(va);
+}
+
+#endif /* K_STRICT */