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authorJohn Birrell <jb@FreeBSD.org>2008-04-25 23:33:18 +0000
committerJohn Birrell <jb@FreeBSD.org>2008-04-25 23:33:18 +0000
commitd876124d6ae9d56da5b4ff4c6015efd1d0c9222a (patch)
treee6cfdef2a8b9488b25517d80411d703ccb765e26 /cddl/contrib/opensolaris/common/ctf/ctf_util.c
parent2056b4037cdba1def880066fab7cca98df5b4d86 (diff)
parent2de84d2572206157cf33d1fb75463eeb42ae8e42 (diff)
downloadsrc-d876124d6ae9d56da5b4ff4c6015efd1d0c9222a.tar.gz
src-d876124d6ae9d56da5b4ff4c6015efd1d0c9222a.zip
This commit was generated by cvs2svn to compensate for changes in r178525,
which included commits to RCS files with non-trunk default branches.
Notes
Notes: svn path=/head/; revision=178526
Diffstat (limited to 'cddl/contrib/opensolaris/common/ctf/ctf_util.c')
-rw-r--r--cddl/contrib/opensolaris/common/ctf/ctf_util.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/common/ctf/ctf_util.c b/cddl/contrib/opensolaris/common/ctf/ctf_util.c
new file mode 100644
index 000000000000..740d403e8c52
--- /dev/null
+++ b/cddl/contrib/opensolaris/common/ctf/ctf_util.c
@@ -0,0 +1,152 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License"). You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <ctf_impl.h>
+
+/*
+ * Simple doubly-linked list append routine. This implementation assumes that
+ * each list element contains an embedded ctf_list_t as the first member.
+ * An additional ctf_list_t is used to store the head (l_next) and tail
+ * (l_prev) pointers. The current head and tail list elements have their
+ * previous and next pointers set to NULL, respectively.
+ */
+void
+ctf_list_append(ctf_list_t *lp, void *new)
+{
+ ctf_list_t *p = lp->l_prev; /* p = tail list element */
+ ctf_list_t *q = new; /* q = new list element */
+
+ lp->l_prev = q;
+ q->l_prev = p;
+ q->l_next = NULL;
+
+ if (p != NULL)
+ p->l_next = q;
+ else
+ lp->l_next = q;
+}
+
+/*
+ * Prepend the specified existing element to the given ctf_list_t. The
+ * existing pointer should be pointing at a struct with embedded ctf_list_t.
+ */
+void
+ctf_list_prepend(ctf_list_t *lp, void *new)
+{
+ ctf_list_t *p = new; /* p = new list element */
+ ctf_list_t *q = lp->l_next; /* q = head list element */
+
+ lp->l_next = p;
+ p->l_prev = NULL;
+ p->l_next = q;
+
+ if (q != NULL)
+ q->l_prev = p;
+ else
+ lp->l_prev = p;
+}
+
+/*
+ * Delete the specified existing element from the given ctf_list_t. The
+ * existing pointer should be pointing at a struct with embedded ctf_list_t.
+ */
+void
+ctf_list_delete(ctf_list_t *lp, void *existing)
+{
+ ctf_list_t *p = existing;
+
+ if (p->l_prev != NULL)
+ p->l_prev->l_next = p->l_next;
+ else
+ lp->l_next = p->l_next;
+
+ if (p->l_next != NULL)
+ p->l_next->l_prev = p->l_prev;
+ else
+ lp->l_prev = p->l_prev;
+}
+
+/*
+ * Convert an encoded CTF string name into a pointer to a C string by looking
+ * up the appropriate string table buffer and then adding the offset.
+ */
+const char *
+ctf_strraw(ctf_file_t *fp, uint_t name)
+{
+ ctf_strs_t *ctsp = &fp->ctf_str[CTF_NAME_STID(name)];
+
+ if (ctsp->cts_strs != NULL && CTF_NAME_OFFSET(name) < ctsp->cts_len)
+ return (ctsp->cts_strs + CTF_NAME_OFFSET(name));
+
+ /* string table not loaded or corrupt offset */
+ return (NULL);
+}
+
+const char *
+ctf_strptr(ctf_file_t *fp, uint_t name)
+{
+ const char *s = ctf_strraw(fp, name);
+ return (s != NULL ? s : "(?)");
+}
+
+/*
+ * Same strdup(3C), but use ctf_alloc() to do the memory allocation.
+ */
+char *
+ctf_strdup(const char *s1)
+{
+ char *s2 = ctf_alloc(strlen(s1) + 1);
+
+ if (s2 != NULL)
+ (void) strcpy(s2, s1);
+
+ return (s2);
+}
+
+/*
+ * Store the specified error code into errp if it is non-NULL, and then
+ * return NULL for the benefit of the caller.
+ */
+ctf_file_t *
+ctf_set_open_errno(int *errp, int error)
+{
+ if (errp != NULL)
+ *errp = error;
+ return (NULL);
+}
+
+/*
+ * Store the specified error code into the CTF container, and then return
+ * CTF_ERR for the benefit of the caller.
+ */
+long
+ctf_set_errno(ctf_file_t *fp, int err)
+{
+ fp->ctf_errno = err;
+ return (CTF_ERR);
+}