1 files changed, 106 insertions, 0 deletions
diff --git a/usr/src/lib/libc/port/stdio/getline.c b/usr/src/lib/libc/port/stdio/getline.c
new file mode 100644
index 0000000000..bb55b40159
--- /dev/null
+++ b/usr/src/lib/libc/port/stdio/getline.c
@@ -0,0 +1,106 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include "lint.h"
+#include "file64.h"
+#include "mtlib.h"
+#include <stdio.h>
+#include <errno.h>
+#include <thread.h>
+#include <synch.h>
+#include <unistd.h>
+#include <limits.h>
+#include <malloc.h>
+#include <sys/types.h>
+#include "stdiom.h"
+
+#define	LINESZ	128	/* initial guess for a NULL *lineptr */
+
+ssize_t
+getdelim(char **_RESTRICT_KYWD lineptr, size_t *_RESTRICT_KYWD n,
+    int delimiter, FILE *_RESTRICT_KYWD iop)
+{
+	rmutex_t *lk;
+	char *ptr;
+	size_t size;
+	int c;
+	size_t cnt;
+
+	if (lineptr == NULL || n == NULL ||
+	    delimiter < 0 || delimiter > UCHAR_MAX) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	if (*lineptr == NULL || *n < LINESZ) {	/* initial allocation */
+		if ((*lineptr = realloc(*lineptr, LINESZ)) == NULL) {
+			errno = ENOMEM;
+			return (-1);
+		}
+		*n = LINESZ;
+	}
+	ptr = *lineptr;
+	size = *n;
+	cnt = 0;
+
+	FLOCKFILE(lk, iop);
+
+	_SET_ORIENTATION_BYTE(iop);
+
+	do {
+		c = (--iop->_cnt < 0) ? __filbuf(iop) : *iop->_ptr++;
+		if (c == EOF)
+			break;
+		*ptr++ = c;
+		if (++cnt == size) {	/* must reallocate */
+			if ((ptr = realloc(*lineptr, 2 * size)) == NULL) {
+				FUNLOCKFILE(lk);
+				ptr = *lineptr + size - 1;
+				*ptr = '\0';
+				errno = ENOMEM;
+				return (-1);
+			}
+			*lineptr = ptr;
+			ptr += size;
+			*n = size = 2 * size;
+		}
+	} while (c != delimiter);
+
+	*ptr = '\0';
+
+	FUNLOCKFILE(lk);
+	if (cnt > SSIZE_MAX) {
+		errno = EOVERFLOW;
+		return (-1);
+	}
+	return (cnt ? cnt : -1);
+}
+
+ssize_t
+getline(char **_RESTRICT_KYWD lineptr, size_t *_RESTRICT_KYWD n,
+    FILE *_RESTRICT_KYWD iop)
+{
+	return (getdelim(lineptr, n, '\n', iop));
+}