[PATCH 07/12] parse_integer: convert lib/

From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux@rasmusvillemoes.dk
Subject: [PATCH 07/12] parse_integer: convert lib/
Date: Fri, 8 May 2015 21:35:19 +0300	[thread overview]
Message-ID: <20150508183519.GE9182@p183.telecom.by> (raw)
In-Reply-To: <20150508182911.GA9044@p183.telecom.by>

Convert away lib/ from deprecated simple_strto*() interfaces.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
 lib/cmdline.c | 44 ++++++++++++++++++++++++--------------------
 lib/parser.c  | 33 ++++++++++++++++-----------------
 lib/swiotlb.c |  2 +-
 3 files changed, 41 insertions(+), 38 deletions(-)

diff --git a/lib/cmdline.c b/lib/cmdline.c
index 8f13cf7..c248c58 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -27,7 +27,7 @@ static int get_range(char **str, int *pint)
 	int x, inc_counter, upper_range;
 
 	(*str)++;
-	upper_range = simple_strtol((*str), NULL, 0);
+	parse_integer(*str, 0, &upper_range);
 	inc_counter = upper_range - *pint;
 	for (x = *pint; x < upper_range; x++)
 		*pint++ = x;
@@ -51,13 +51,14 @@ static int get_range(char **str, int *pint)
 
 int get_option(char **str, int *pint)
 {
-	char *cur = *str;
+	int len;
 
-	if (!cur || !(*cur))
+	if (!str || !*str)
 		return 0;
-	*pint = simple_strtol(cur, str, 0);
-	if (cur == *str)
+	len = parse_integer(*str, 0, pint);
+	if (len < 0)
 		return 0;
+	*str += len;
 	if (**str == ',') {
 		(*str)++;
 		return 2;
@@ -126,38 +127,41 @@ EXPORT_SYMBOL(get_options);
 
 unsigned long long memparse(const char *ptr, char **retptr)
 {
-	char *endptr;	/* local pointer to end of parsed string */
-
-	unsigned long long ret = simple_strtoull(ptr, &endptr, 0);
-
-	switch (*endptr) {
+	unsigned long long val = 0;
+	int len;
+
+	len = parse_integer(ptr, 0, &val);
+	if (len < 0)
+		goto out;
+	ptr += len;
+	switch (*ptr) {
 	case 'E':
 	case 'e':
-		ret <<= 10;
+		val <<= 10;
 	case 'P':
 	case 'p':
-		ret <<= 10;
+		val <<= 10;
 	case 'T':
 	case 't':
-		ret <<= 10;
+		val <<= 10;
 	case 'G':
 	case 'g':
-		ret <<= 10;
+		val <<= 10;
 	case 'M':
 	case 'm':
-		ret <<= 10;
+		val <<= 10;
 	case 'K':
 	case 'k':
-		ret <<= 10;
-		endptr++;
+		val <<= 10;
+		ptr++;
 	default:
 		break;
 	}
-
+out:
 	if (retptr)
-		*retptr = endptr;
+		*retptr = (char *)ptr;
 
-	return ret;
+	return val;
 }
 EXPORT_SYMBOL(memparse);
 
diff --git a/lib/parser.c b/lib/parser.c
index b6d1163..f003867 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -44,7 +44,7 @@ static int match_one(char *s, const char *p, substring_t args[])
 		p = meta + 1;
 
 		if (isdigit(*p))
-			len = simple_strtoul(p, (char **) &p, 10);
+			p += parse_integer(p, 10, (unsigned int *)&len);
 		else if (*p == '%') {
 			if (*s++ != '%')
 				return 0;
@@ -57,6 +57,11 @@ static int match_one(char *s, const char *p, substring_t args[])
 
 		args[argc].from = s;
 		switch (*p++) {
+			union {
+				int i;
+				unsigned int u;
+			} u;
+
 		case 's': {
 			size_t str_len = strlen(s);
 
@@ -68,19 +73,20 @@ static int match_one(char *s, const char *p, substring_t args[])
 			break;
 		}
 		case 'd':
-			simple_strtol(s, &args[argc].to, 0);
+			len = parse_integer(s, 0, &u.i);
 			goto num;
 		case 'u':
-			simple_strtoul(s, &args[argc].to, 0);
+			len = parse_integer(s, 0, &u.u);
 			goto num;
 		case 'o':
-			simple_strtoul(s, &args[argc].to, 8);
+			len = parse_integer(s, 8, &u.u);
 			goto num;
 		case 'x':
-			simple_strtoul(s, &args[argc].to, 16);
+			len = parse_integer(s, 16, &u.u);
 		num:
-			if (args[argc].to == args[argc].from)
+			if (len < 0)
 				return 0;
+			args[argc].to = args[argc].from + len;
 			break;
 		default:
 			return 0;
@@ -127,10 +133,8 @@ EXPORT_SYMBOL(match_token);
  */
 static int match_number(substring_t *s, int *result, int base)
 {
-	char *endp;
 	char *buf;
 	int ret;
-	long val;
 	size_t len = s->to - s->from;
 
 	buf = kmalloc(len + 1, GFP_KERNEL);
@@ -139,16 +143,11 @@ static int match_number(substring_t *s, int *result, int base)
 	memcpy(buf, s->from, len);
 	buf[len] = '\0';
 
-	ret = 0;
-	val = simple_strtol(buf, &endp, base);
-	if (endp == buf)
-		ret = -EINVAL;
-	else if (val < (long)INT_MIN || val > (long)INT_MAX)
-		ret = -ERANGE;
-	else
-		*result = (int) val;
+	ret = parse_integer(buf, base, result);
 	kfree(buf);
-	return ret;
+	if (ret < 0)
+		return ret;
+	return 0;
 }
 
 /**
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 4abda07..33178e5 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -100,7 +100,7 @@ static int __init
 setup_io_tlb_npages(char *str)
 {
 	if (isdigit(*str)) {
-		io_tlb_nslabs = simple_strtoul(str, &str, 0);
+		str += parse_integer(str, 0, &io_tlb_nslabs);
 		/* avoid tail segment of size < IO_TLB_SEGSIZE */
 		io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
 	}
-- 
2.0.4

