From d686a045c8134d3a42fa5cc6b2e09118e08d603f Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Mon, 27 Nov 2006 14:43:21 +0000
Subject: safe_strtoXX interface proved to be a bit unconvenient. Remove it,
 introduce saner bb_strtoXX. Saved ~350 bytes.

---
 coreutils/expr.c         |   2 +
 coreutils/printf.c       |  31 +++++++---
 e2fsprogs/mke2fs.c       |  54 +++++------------
 e2fsprogs/tune2fs.c      |  32 +++++------
 include/libbb.h          |  33 ++++-------
 include/xatonum.h        |  51 ++++++++++++++++
 libbb/Kbuild             |   2 +-
 libbb/procps.c           |   3 +-
 libbb/safe_strtol.c      | 147 -----------------------------------------------
 libbb/xatonum.c          |  32 -----------
 libbb/xatonum_template.c |  10 ++++
 loginutils/getty.c       |   4 +-
 networking/ftpgetput.c   |   3 +-
 networking/udhcp/files.c |   6 +-
 networking/wget.c        |  12 ++--
 procps/renice.c          |   3 +-
 16 files changed, 145 insertions(+), 280 deletions(-)
 delete mode 100644 libbb/safe_strtol.c

diff --git a/coreutils/expr.c b/coreutils/expr.c
index 854a657f9..191473446 100644
--- a/coreutils/expr.c
+++ b/coreutils/expr.c
@@ -49,6 +49,8 @@ typedef long arith_t;
 #define STRTOL(s, e, b) strtol(s, e, b)
 #endif
 
+/* TODO: use bb_strtol[l]? It's easier to check for errors... */
+
 /* A value is.... */
 struct valinfo {
 	TYPE type;			/* Which kind. */
diff --git a/coreutils/printf.c b/coreutils/printf.c
index 1511034a1..0e818354f 100644
--- a/coreutils/printf.c
+++ b/coreutils/printf.c
@@ -44,38 +44,55 @@ static int print_formatted(char *format, int argc, char **argv);
 static void print_direc(char *start, size_t length,
 			int field_width, int precision, char *argument);
 
-typedef int (*converter)(char *arg, void *result);
+typedef void (*converter)(char *arg, void *result);
 
 static void multiconvert(char *arg, void *result, converter convert)
 {
 	char s[16];
 	if (*arg == '"' || *arg == '\'') {
-		sprintf(s, "%d", (unsigned)arg[1]);
+		sprintf(s, "%d", (unsigned char)arg[1]);
 		arg = s;
 	}
-	if (convert(arg, result))
+	convert(arg, result);
+	if (errno) /* Huh, looks strange... bug? */
 		fputs(arg, stderr);
 }
 
+static void conv_strtoul(char *arg, void *result)
+{
+	*(unsigned long*)result = bb_strtoul(arg, NULL, 10);
+}
+static void conv_strtol(char *arg, void *result)
+{
+	*(long*)result = bb_strtol(arg, NULL, 10);
+}
+static void conv_strtod(char *arg, void *result)
+{
+	char *end;
+	/* Well, this one allows leading whitespace... so what */
+	/* What I like much less is that "-" is accepted too! :( */
+	*(double*)result = strtod(arg, &end);
+	if (end[0]) errno = ERANGE;
+}
+
 static unsigned long my_xstrtoul(char *arg)
 {
 	unsigned long result;
-
-	multiconvert(arg, &result, (converter)safe_strtoul);
+	multiconvert(arg, &result, conv_strtoul);
 	return result;
 }
 
 static long my_xstrtol(char *arg)
 {
 	long result;
-	multiconvert(arg, &result, (converter)safe_strtol);
+	multiconvert(arg, &result, conv_strtol);
 	return result;
 }
 
 static double my_xstrtod(char *arg)
 {
 	double result;
-	multiconvert(arg, &result, (converter)safe_strtod);
+	multiconvert(arg, &result, conv_strtod);
 	return result;
 }
 
diff --git a/e2fsprogs/mke2fs.c b/e2fsprogs/mke2fs.c
index 1c4f1541e..f25ecfb6c 100644
--- a/e2fsprogs/mke2fs.c
+++ b/e2fsprogs/mke2fs.c
@@ -673,7 +673,7 @@ static void show_stats(ext2_filsys fs)
 static int set_os(struct ext2_super_block *sb, char *os)
 {
 	if (isdigit (*os)) {
-		sb->s_creator_os = atoi (os);
+		sb->s_creator_os = atoi(os);
 		return 1;
 	}
 
@@ -790,7 +790,7 @@ static __u32 ok_features[3] = {
 
 static int PRS(int argc, char *argv[])
 {
-	int		b, c;
+	int		c;
 	int		size;
 	char *		tmp;
 	int		blocksize = 0;
@@ -848,54 +848,32 @@ static int PRS(int argc, char *argv[])
 		    "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
 		switch (c) {
 		case 'b':
-			if (safe_strtoi(optarg, &blocksize))
-				goto BLOCKSIZE_ERROR;
-			b = (blocksize > 0) ? blocksize : -blocksize;
-			if (b < EXT2_MIN_BLOCK_SIZE ||
-			    b > EXT2_MAX_BLOCK_SIZE) {
-BLOCKSIZE_ERROR:
-				bb_error_msg_and_die("invalid block size - %s", optarg);
-			}
+			blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 			mke2fs_warning_msg((blocksize > 4096),
 				"blocksize %d not usable on most systems",
 				blocksize);
-			if (blocksize > 0)
-				param.s_log_block_size =
-					int_log2(blocksize >>
-						 EXT2_MIN_BLOCK_LOG_SIZE);
+			param.s_log_block_size =
+				int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
 			break;
 		case 'c':	/* Check for bad blocks */
 		case 't':	/* deprecated */
 			cflag++;
 			break;
 		case 'f':
-			if (safe_strtoi(optarg, &size) || size < EXT2_MIN_BLOCK_SIZE || size > EXT2_MAX_BLOCK_SIZE ){
-				bb_error_msg_and_die("invalid fragment size - %s", optarg);
-			}
+			size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
 			param.s_log_frag_size =
 				int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
 			mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
 			break;
 		case 'g':
-			{
-			    int foo;
-			    if (safe_strtoi(optarg, &foo)) {
-				bb_error_msg_and_die("Illegal number for blocks per group");
-			    }
-			    param.s_blocks_per_group = foo;
-			}
+			param.s_blocks_per_group = xatou32(optarg);
 			if ((param.s_blocks_per_group % 8) != 0) {
 				bb_error_msg_and_die("blocks per group must be multiple of 8");
 			}
 			break;
 		case 'i':
-			if (safe_strtoi(optarg, &inode_ratio)
-				|| inode_ratio < EXT2_MIN_BLOCK_SIZE
-				|| inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
-				bb_error_msg_and_die("invalid inode ratio %s (min %d/max %d)",
-					optarg, EXT2_MIN_BLOCK_SIZE,
-					EXT2_MAX_BLOCK_SIZE);
-				}
+			/* Huh? is "* 1024" correct? */
+			inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
 			break;
 		case 'J':
 			parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
@@ -910,9 +888,7 @@ BLOCKSIZE_ERROR:
 			bad_blocks_filename = optarg;
 			break;
 		case 'm':
-			if (safe_strtoi(optarg, &reserved_ratio) || reserved_ratio > 50 ) {
-				bb_error_msg_and_die("invalid reserved blocks percent - %s", optarg);
-			}
+			reserved_ratio = xatou_range(optarg, 0, 50);
 			break;
 		case 'n':
 			noaction++;
@@ -921,7 +897,7 @@ BLOCKSIZE_ERROR:
 			creator_os = optarg;
 			break;
 		case 'r':
-			param.s_rev_level = atoi(optarg);
+			param.s_rev_level = xatoi_u(optarg);
 			if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
 				param.s_feature_incompat = 0;
 				param.s_feature_compat = 0;
@@ -929,7 +905,7 @@ BLOCKSIZE_ERROR:
 			}
 			break;
 		case 's':	/* deprecated */
-			if (atoi(optarg))
+			if (xatou(optarg))
 				param.s_feature_ro_compat |=
 					EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
 			else
@@ -938,13 +914,11 @@ BLOCKSIZE_ERROR:
 			break;
 #ifdef EXT2_DYNAMIC_REV
 		case 'I':
-			if (safe_strtoi(optarg, &inode_size)) {
-				bb_error_msg_and_die("invalid inode size - %s", optarg);
-			}
+			inode_size = xatoi_u(optarg);
 			break;
 #endif
 		case 'N':
-			num_inodes = atoi(optarg);
+			num_inodes = xatoi_u(optarg);
 			break;
 		case 'v':
 			quiet = 0;
diff --git a/e2fsprogs/tune2fs.c b/e2fsprogs/tune2fs.c
index d22deede2..c8dfc6927 100644
--- a/e2fsprogs/tune2fs.c
+++ b/e2fsprogs/tune2fs.c
@@ -54,7 +54,8 @@ static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
 static time_t last_check_time;
 static int print_label;
 static int max_mount_count, mount_count, mount_flags;
-static unsigned long interval, reserved_ratio, reserved_blocks;
+static unsigned long interval, reserved_blocks;
+static unsigned reserved_ratio;
 static unsigned long resgid, resuid;
 static unsigned short errors;
 static int open_flag;
@@ -410,19 +411,14 @@ static void parse_tune2fs_options(int argc, char **argv)
 		switch (c)
 		{
 			case 'c':
-				if (safe_strtoi(optarg, &max_mount_count) ||  max_mount_count > 16000) {
-					goto MOUNTS_COUNT_ERROR;
-				}
+				max_mount_count = xatou_range(optarg, 0, 16000);
 				if (max_mount_count == 0)
 					max_mount_count = -1;
 				c_flag = 1;
 				open_flag = EXT2_FLAG_RW;
 				break;
 			case 'C':
-				if (safe_strtoi(optarg, &mount_count) || mount_count > 16000) {
-MOUNTS_COUNT_ERROR:
-					bb_error_msg_and_die("bad mounts count - %s", optarg);
-				}
+				mount_count = xatou_range(optarg, 0, 16000);
 				C_flag = 1;
 				open_flag = EXT2_FLAG_RW;
 				break;
@@ -443,13 +439,14 @@ MOUNTS_COUNT_ERROR:
 				f_flag = 1;
 				break;
 			case 'g':
-				if (safe_strtoul(optarg, &resgid))
+				resgid = bb_strtoul(optarg, NULL, 10);
+				if (errno)
 					resgid = bb_xgetgrnam(optarg);
 				g_flag = 1;
 				open_flag = EXT2_FLAG_RW;
 				break;
 			case 'i':
-				interval = strtoul (optarg, &tmp, 0);
+				interval = strtoul(optarg, &tmp, 0);
 				switch (*tmp) {
 				case 's':
 					tmp++;
@@ -497,9 +494,7 @@ MOUNTS_COUNT_ERROR:
 					EXT2_FLAG_JOURNAL_DEV_OK;
 				break;
 			case 'm':
-				if(safe_strtoul(optarg, &reserved_ratio) || reserved_ratio > 50) {
-					bb_error_msg_and_die("bad reserved block ratio - %s", optarg);
-				}
+				reserved_ratio = xatou_range(optarg, 0, 50);
 				m_flag = 1;
 				open_flag = EXT2_FLAG_RW;
 				break;
@@ -524,9 +519,7 @@ MOUNTS_COUNT_ERROR:
 				open_flag = EXT2_FLAG_RW;
 				break;
 			case 'r':
-				if(safe_strtoul(optarg, &reserved_blocks)) {
-					bb_error_msg_and_die("bad reserved blocks count - %s", optarg);
-				}
+				reserved_blocks = xatoul(optarg);
 				r_flag = 1;
 				open_flag = EXT2_FLAG_RW;
 				break;
@@ -540,7 +533,8 @@ MOUNTS_COUNT_ERROR:
 				open_flag = EXT2_FLAG_RW;
 				break;
 			case 'u':
-				if (safe_strtoul(optarg, &resuid))
+				resuid = bb_strtoul(optarg, NULL, 10);
+				if (errno)
 					resuid = bb_xgetpwnam(optarg);
 				u_flag = 1;
 				open_flag = EXT2_FLAG_RW;
@@ -646,9 +640,9 @@ int tune2fs_main(int argc, char **argv)
 	}
 	if (m_flag) {
 		sb->s_r_blocks_count = (sb->s_blocks_count / 100)
-			* reserved_ratio;
+				* reserved_ratio;
 		ext2fs_mark_super_dirty(fs);
-		printf("Setting reserved blocks percentage to %lu (%u blocks)\n",
+		printf("Setting reserved blocks percentage to %u (%u blocks)\n",
 			reserved_ratio, sb->s_r_blocks_count);
 	}
 	if (r_flag) {
diff --git a/include/libbb.h b/include/libbb.h
index e93031231..63748c85d 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -85,30 +85,31 @@
 /* CONFIG_LFS is on */
 # if ULONG_MAX > 0xffffffff
 /* "long" is long enough on this system */
-#  define STRTOOFF strtol
-#  define SAFE_STRTOOFF safe_strtol
-#  define XSTRTOUOFF xstrtoul
+#  define XSTRTOOFF xstrtoul
+/* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */
+#  define BB_STRTOOFF bb_strtoul
+#  define STRTOOFF strtoul
 /* usage: printf("size: %"OFF_FMT"d (%"OFF_FMT"x)\n", sz, sz); */
 #  define OFF_FMT "l"
 # else
 /* "long" is too short, need "long long" */
-#  define STRTOOFF strtoll
-#  define SAFE_STRTOOFF safe_strtoll
-#  define XSTRTOUOFF xstrtoull
+#  define XSTRTOOFF xstrtoull
+#  define BB_STRTOOFF bb_strtoull
+#  define STRTOOFF strtoull
 #  define OFF_FMT "ll"
 # endif
 #else
 # if 0 /* #if UINT_MAX == 0xffffffff */
 /* Doesn't work. off_t is a long. gcc will throw warnings on printf("%d", off_t)
  * even if long==int on this arch. Crap... */
+#  define XSTRTOOFF xstrtou
+#  define BB_STRTOOFF bb_strtoi
 #  define STRTOOFF strtol
-#  define SAFE_STRTOOFF safe_strtoi
-#  define XSTRTOUOFF xstrtou
 #  define OFF_FMT ""
 # else
+#  define XSTRTOOFF xstrtoul
+#  define BB_STRTOOFF bb_strtol
 #  define STRTOOFF strtol
-#  define SAFE_STRTOOFF safe_strtol
-#  define XSTRTOUOFF xstrtoul
 #  define OFF_FMT "l"
 # endif
 #endif
@@ -299,18 +300,6 @@ extern char *utoa(unsigned n);
 extern void itoa_to_buf(int n, char *buf, unsigned buflen);
 extern char *itoa(int n);
 
-// FIXME: the prototype doesn't match libc strtoXX -> confusion
-// FIXME: alot of unchecked strtoXXX are still in tree
-// FIXME: atoi_or_else(str, N)?
-extern int safe_strtoi(const char *arg, int* value);
-extern int safe_strtou(const char *arg, unsigned* value);
-extern int safe_strtod(const char *arg, double* value);
-extern int safe_strtol(const char *arg, long* value);
-extern int safe_strtoll(const char *arg, long long* value);
-extern int safe_strtoul(const char *arg, unsigned long* value);
-extern int safe_strtoull(const char *arg, unsigned long long* value);
-extern int safe_strtou32(const char *arg, uint32_t* value);
-
 struct suffix_mult {
 	const char *suffix;
 	unsigned mult;
diff --git a/include/xatonum.h b/include/xatonum.h
index 46e49b0eb..585d84623 100644
--- a/include/xatonum.h
+++ b/include/xatonum.h
@@ -104,3 +104,54 @@ extern inline uint32_t xatou32(const char *numstr)
 		return xatoul(numstr);
 	return BUG_xatou32_unimplemented();
 }
+
+/* Non-aborting kind of convertors */
+
+unsigned long long bb_strtoull(const char *arg, char **endp, int base);
+long long bb_strtoll(const char *arg, char **endp, int base);
+
+#if ULONG_MAX == ULLONG_MAX
+extern inline
+unsigned long bb_strtoul(const char *arg, char **endp, int base)
+{ return bb_strtoull(arg, endp, base); }
+extern inline
+unsigned long bb_strtol(const char *arg, char **endp, int base)
+{ return bb_strtoll(arg, endp, base); }
+#else
+unsigned long bb_strtoul(const char *arg, char **endp, int base);
+long bb_strtol(const char *arg, char **endp, int base);
+#endif
+
+#if UINT_MAX == ULLONG_MAX
+extern inline
+unsigned long bb_strtou(const char *arg, char **endp, int base)
+{ return bb_strtoull(arg, endp, base); }
+extern inline
+unsigned long bb_strtoi(const char *arg, char **endp, int base)
+{ return bb_strtoll(arg, endp, base); }
+#elif UINT_MAX == ULONG_MAX
+extern inline
+unsigned long bb_strtou(const char *arg, char **endp, int base)
+{ return bb_strtoul(arg, endp, base); }
+extern inline
+unsigned long bb_strtoi(const char *arg, char **endp, int base)
+{ return bb_strtol(arg, endp, base); }
+#else
+unsigned long bb_strtou(const char *arg, char **endp, int base);
+long bb_strtoi(const char *arg, char **endp, int base);
+#endif
+
+int BUG_bb_strtou32_unimplemented(void);
+extern inline
+uint32_t bb_strtou32(const char *arg, char **endp, int base)
+{
+	if (sizeof(uint32_t) == sizeof(unsigned))
+		return bb_strtou(arg, endp, base);
+	if (sizeof(uint32_t) == sizeof(unsigned long))
+		return bb_strtoul(arg, endp, base);
+	return BUG_bb_strtou32_unimplemented();
+}
+
+/* Floating point */
+
+/* double bb_strtod(const char *arg, char **endp); */
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 550723cea..c15615302 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -10,6 +10,7 @@ lib-y += ask_confirmation.o
 lib-y += bb_askpass.o
 lib-y += bb_do_delay.o
 lib-y += bb_pwd.o
+lib-y += bb_strtonum.o
 lib-y += change_identity.o
 lib-y += chomp.o
 lib-y += compare_string_array.o
@@ -67,7 +68,6 @@ lib-y += remove_file.o
 lib-y += restricted_shell.o
 lib-y += run_shell.o
 lib-y += safe_strncpy.o
-lib-y += safe_strtol.o
 lib-y += safe_write.o
 lib-y += setup_environment.o
 lib-y += sha1.o
diff --git a/libbb/procps.c b/libbb/procps.c
index ee4f5e53f..017710ff4 100644
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -119,7 +119,8 @@ procps_status_t* procps_scan(procps_status_t* sp, int flags)
 			free_procps_scan(sp);
 			return NULL;
 		}
-		if (safe_strtou(entry->d_name, &pid))
+		pid = bb_strtou(entry->d_name, NULL, 10);
+		if (errno)
 			continue;
 
 		/* After this point we have to break, not continue
diff --git a/libbb/safe_strtol.c b/libbb/safe_strtol.c
deleted file mode 100644
index d3bb29cdd..000000000
--- a/libbb/safe_strtol.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Utility routines.
- *
- * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#include <assert.h>
-#include "libbb.h"
-
-int safe_strtod(const char *arg, double* value)
-{
-	char *endptr;
-	int errno_save = errno;
-
-	assert(arg!=NULL);
-	errno = 0;
-	*value = strtod(arg, &endptr);
-	if (errno != 0 || *endptr != '\0' || endptr == arg) {
-		return 1;
-	}
-	errno = errno_save;
-	return 0;
-}
-
-int safe_strtoull(const char *arg, unsigned long long* value)
-{
-	char *endptr;
-	int errno_save = errno;
-
-	assert(arg!=NULL);
-	if (!isdigit(arg[0])) /* strtouXX takes minus signs w/o error! :( */
-		return 1;
-	errno = 0;
-	*value = strtoull(arg, &endptr, 0);
-	if (errno != 0 || *endptr != '\0' || endptr == arg) {
-		return 1;
-	}
-	errno = errno_save;
-	return 0;
-}
-
-int safe_strtoll(const char *arg, long long* value)
-{
-	char *endptr;
-	int errno_save = errno;
-
-	assert(arg!=NULL);
-	errno = 0;
-	*value = strtoll(arg, &endptr, 0);
-	if (errno != 0 || *endptr != '\0' || endptr == arg) {
-		return 1;
-	}
-	errno = errno_save;
-	return 0;
-}
-
-int safe_strtoul(const char *arg, unsigned long* value)
-{
-	char *endptr;
-	int errno_save = errno;
-
-	assert(arg!=NULL);
-	if (!isdigit(arg[0])) /* strtouXX takes minus signs w/o error! :( */
-		return 1;
-	errno = 0;
-	*value = strtoul(arg, &endptr, 0);
-	if (errno != 0 || *endptr != '\0' || endptr == arg) {
-		return 1;
-	}
-	errno = errno_save;
-	return 0;
-}
-
-int safe_strtol(const char *arg, long* value)
-{
-	char *endptr;
-	int errno_save = errno;
-
-	assert(arg!=NULL);
-	errno = 0;
-	*value = strtol(arg, &endptr, 0);
-	if (errno != 0 || *endptr != '\0' || endptr == arg) {
-		return 1;
-	}
-	errno = errno_save;
-	return 0;
-}
-
-/* TODO: This is what uclibc is doing. Try to do the same? */
-
-#if 0
-#if defined __HAVE_ELF__
-
-# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
-# define _strong_alias(name, aliasname) \
-  extern __typeof (name) aliasname __attribute__ ((alias (#name)));
-
-#else /* !defined __HAVE_ELF__ */
-
-#  define strong_alias(name, aliasname) _strong_alias (name, aliasname)
-#  define _strong_alias(name, aliasname) \
-	__asm__(".global " __C_SYMBOL_PREFIX__ #aliasname "\n" \
-	        ".set " __C_SYMBOL_PREFIX__ #aliasname "," __C_SYMBOL_PREFIX__ #name);
-
-#endif
-#endif
-
-int safe_strtoi(const char *arg, int* value)
-{
-	int error;
-	long lvalue;
-	if (sizeof(long) == sizeof(int))
-		return safe_strtol(arg, (long*)value);
-	lvalue = *value;
-	error = safe_strtol(arg, &lvalue);
-	if (lvalue < INT_MIN || lvalue > INT_MAX)
-		return 1;
-	*value = (int) lvalue;
-	return error;
-}
-
-int safe_strtou(const char *arg, unsigned* value)
-{
-	int error;
-	unsigned long lvalue;
-	if (sizeof(unsigned long) == sizeof(unsigned))
-		return safe_strtoul(arg, (unsigned long*)value);
-	lvalue = *value;
-	error = safe_strtoul(arg, &lvalue);
-	if (lvalue > UINT_MAX)
-		return 1;
-	*value = (unsigned) lvalue;
-	return error;
-}
-
-int BUG_safe_strtou32_unimplemented(void);
-int safe_strtou32(const char *arg, uint32_t* value)
-{
-	if (sizeof(uint32_t) == sizeof(unsigned))
-		return safe_strtou(arg, (unsigned*)value);
-	if (sizeof(uint32_t) == sizeof(unsigned long))
-		return safe_strtoul(arg, (unsigned long*)value);
-	return BUG_safe_strtou32_unimplemented();
-}
diff --git a/libbb/xatonum.c b/libbb/xatonum.c
index 0d487dd9b..35607c317 100644
--- a/libbb/xatonum.c
+++ b/libbb/xatonum.c
@@ -19,15 +19,6 @@
 #define XSTR_TYPE_MIN LLONG_MIN
 #define XSTR_STRTOU strtoull
 #include "xatonum_template.c"
-#undef type
-#undef xstrtou
-#undef xstrto
-#undef xatou
-#undef xato
-#undef XSTR_UTYPE_MAX
-#undef XSTR_TYPE_MAX
-#undef XSTR_TYPE_MIN
-#undef XSTR_STRTOU
 
 #if ULONG_MAX != ULLONG_MAX
 #define type long
@@ -40,15 +31,6 @@
 #define XSTR_TYPE_MIN LONG_MIN
 #define XSTR_STRTOU strtoul
 #include "xatonum_template.c"
-#undef type
-#undef xstrtou
-#undef xstrto
-#undef xatou
-#undef xato
-#undef XSTR_UTYPE_MAX
-#undef XSTR_TYPE_MAX
-#undef XSTR_TYPE_MIN
-#undef XSTR_STRTOU
 #endif
 
 #if UINT_MAX != ULONG_MAX
@@ -72,15 +54,6 @@ extern inline unsigned bb_strtoui(const char *str, char **end, int b)
 /* libc has no strtoui, so we need to create/use our own */
 #define XSTR_STRTOU bb_strtoui
 #include "xatonum_template.c"
-#undef type
-#undef xstrtou
-#undef xstrto
-#undef xatou
-#undef xato
-#undef XSTR_UTYPE_MAX
-#undef XSTR_TYPE_MAX
-#undef XSTR_TYPE_MIN
-#undef XSTR_STRTOU
 #endif
 
 /* A few special cases */
@@ -90,11 +63,6 @@ int xatoi_u(const char *numstr)
 	return xatou_range(numstr, 0, INT_MAX);
 }
 
-uint32_t xatou32(const char *numstr)
-{
-	return xatoul_range(numstr, 0, 0xffffffff);
-}
-
 uint16_t xatou16(const char *numstr)
 {
 	return xatou_range(numstr, 0, 0xffff);
diff --git a/libbb/xatonum_template.c b/libbb/xatonum_template.c
index 245586a5a..53ba544eb 100644
--- a/libbb/xatonum_template.c
+++ b/libbb/xatonum_template.c
@@ -173,3 +173,13 @@ type xato()(const char *numstr)
 {
 	return xstrto(_range_sfx)(numstr, 10, XSTR_TYPE_MIN, XSTR_TYPE_MAX, NULL);
 }
+
+#undef type
+#undef xstrtou
+#undef xstrto
+#undef xatou
+#undef xato
+#undef XSTR_UTYPE_MAX
+#undef XSTR_TYPE_MAX
+#undef XSTR_TYPE_MIN
+#undef XSTR_STRTOU
diff --git a/loginutils/getty.c b/loginutils/getty.c
index 0c269de98..a85e52306 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -147,8 +147,8 @@ static FILE *dbf;
 static int bcode(const char *s)
 {
 	int r;
-	unsigned value;
-	if (safe_strtou((char *)s, &value)) {
+	unsigned value = bb_strtou(s, NULL, 10);
+	if (errno) {
 		return -1;
 	}
 	r = tty_value_to_baud(value);
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index fa1854903..3773f9937 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -124,7 +124,8 @@ int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
 	fd_data = xconnect_ftpdata(server, buf);
 
 	if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
-		if (SAFE_STRTOOFF(buf + 4, &filesize))
+		filesize = BB_STRTOOFF(buf + 4, NULL, 10);
+		if (errno || filesize < 0)
 			bb_error_msg_and_die("SIZE error: %s", buf + 4);
 	} else {
 		filesize = -1;
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index 829d7e960..5e399e1f8 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -64,7 +64,8 @@ static int read_str(const char *line, void *arg)
 
 static int read_u32(const char *line, void *arg)
 {
-	return safe_strtou32(line, (uint32_t*)arg) == 0;
+	*((uint32_t*)arg) = bb_strtou32(line, NULL, 10);
+	return errno == 0;
 }
 
 
@@ -101,7 +102,8 @@ static void attach_option(struct option_set **opt_list,
 	struct option_set *existing, *new, **curr;
 
 	/* add it to an existing option */
-	if ((existing = find_option(*opt_list, option->code))) {
+	existing = find_option(*opt_list, option->code);
+	if (existing) {
 		DEBUG("Attaching option %s to existing member of list", option->name);
 		if (option->flags & OPTION_LIST) {
 			if (existing->data[OPT_LEN] + length <= 255) {
diff --git a/networking/wget.c b/networking/wget.c
index 1e51ce96b..49ebda73c 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -335,7 +335,8 @@ int wget_main(int argc, char **argv)
 			 */
 			while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
 				if (strcasecmp(buf, "content-length") == 0) {
-					if (SAFE_STRTOOFF(s, &content_len) || content_len < 0) {
+					content_len = BB_STRTOOFF(s, NULL, 10);
+					if (errno || content_len < 0) {
 						bb_error_msg_and_die("content-length %s is garbage", s);
 					}
 					got_clen = 1;
@@ -402,7 +403,8 @@ int wget_main(int argc, char **argv)
 		 * Querying file size
 		 */
 		if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
-			if (SAFE_STRTOOFF(buf+4, &content_len) || content_len < 0) {
+			content_len = BB_STRTOOFF(buf+4, NULL, 10);
+			if (errno || content_len < 0) {
 				bb_error_msg_and_die("SIZE value is garbage");
 			}
 			got_clen = 1;
@@ -437,7 +439,7 @@ int wget_main(int argc, char **argv)
 		}
 
 		if (ftpcmd("RETR ", target.path, sfp, buf) > 150)
-			bb_error_msg_and_die("bad response to %s: %s", "RETR", buf);
+			bb_error_msg_and_die("bad response to RETR: %s", buf);
 	}
 
 
@@ -446,7 +448,7 @@ int wget_main(int argc, char **argv)
 	 */
 	if (chunked) {
 		fgets(buf, sizeof(buf), dfp);
-		content_len = STRTOOFF(buf, (char **) NULL, 16);
+		content_len = STRTOOFF(buf, NULL, 16);
 		/* FIXME: error check?? */
 	}
 
@@ -480,7 +482,7 @@ int wget_main(int argc, char **argv)
 		if (chunked) {
 			safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
 			safe_fgets(buf, sizeof(buf), dfp);
-			content_len = STRTOOFF(buf, (char **) NULL, 16);
+			content_len = STRTOOFF(buf, NULL, 16);
 			/* FIXME: error check? */
 			if (content_len == 0) {
 				chunked = 0; /* all done! */
diff --git a/procps/renice.c b/procps/renice.c
index 65674a4ee..08e0dc264 100644
--- a/procps/renice.c
+++ b/procps/renice.c
@@ -87,7 +87,8 @@ int renice_main(int argc, char **argv)
 			}
 			who = p->pw_uid;
 		} else {
-			if (safe_strtou(arg, &who)) {
+			who = bb_strtou(arg, NULL, 10);
+			if (errno) {
 				bb_error_msg("bad value: %s", arg);
 				goto HAD_ERROR;
 			}
-- 
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