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-rw-r--r--lib/atoi/a2i.c46
-rw-r--r--lib/atoi/a2i.h386
-rw-r--r--lib/atoi/str2i.c18
-rw-r--r--lib/atoi/str2i.h108
-rw-r--r--lib/atoi/strtoi.c15
-rw-r--r--lib/atoi/strtoi.h96
-rw-r--r--lib/atoi/strtou_noneg.c13
-rw-r--r--lib/atoi/strtou_noneg.h39
8 files changed, 721 insertions, 0 deletions
diff --git a/lib/atoi/a2i.c b/lib/atoi/a2i.c
new file mode 100644
index 0000000..a2cf872
--- /dev/null
+++ b/lib/atoi/a2i.c
@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i.h"
+
+
+extern inline int a2sh_c(short *restrict n, const char *s,
+ const char **restrict endp, int base, short min, short max);
+extern inline int a2si_c(int *restrict n, const char *s,
+ const char **restrict endp, int base, int min, int max);
+extern inline int a2sl_c(long *restrict n, const char *s,
+ const char **restrict endp, int base, long min, long max);
+extern inline int a2sll_c(long long *restrict n, const char *s,
+ const char **restrict endp, int base, long long min, long long max);
+extern inline int a2uh_c(unsigned short *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned short min,
+ unsigned short max);
+extern inline int a2ui_c(unsigned int *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned int min, unsigned int max);
+extern inline int a2ul_c(unsigned long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long min, unsigned long max);
+extern inline int a2ull_c(unsigned long long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long long min,
+ unsigned long long max);
+
+
+extern inline int a2sh_nc(short *restrict n, char *s,
+ char **restrict endp, int base, short min, short max);
+extern inline int a2si_nc(int *restrict n, char *s,
+ char **restrict endp, int base, int min, int max);
+extern inline int a2sl_nc(long *restrict n, char *s,
+ char **restrict endp, int base, long min, long max);
+extern inline int a2sll_nc(long long *restrict n, char *s,
+ char **restrict endp, int base, long long min, long long max);
+extern inline int a2uh_nc(unsigned short *restrict n, char *s,
+ char **restrict endp, int base, unsigned short min, unsigned short max);
+extern inline int a2ui_nc(unsigned int *restrict n, char *s,
+ char **restrict endp, int base, unsigned int min, unsigned int max);
+extern inline int a2ul_nc(unsigned long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long min, unsigned long max);
+extern inline int a2ull_nc(unsigned long long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long long min,
+ unsigned long long max);
diff --git a/lib/atoi/a2i.h b/lib/atoi/a2i.h
new file mode 100644
index 0000000..64f775a
--- /dev/null
+++ b/lib/atoi/a2i.h
@@ -0,0 +1,386 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+
+#include "atoi/strtoi.h"
+#include "atoi/strtou_noneg.h"
+#include "attr.h"
+
+
+/*
+ * See the manual of these macros in liba2i's documentation:
+ * <http://www.alejandro-colomar.es/share/dist/liba2i/git/HEAD/liba2i-HEAD.pdf>
+ */
+
+
+#define a2i(TYPE, n, s, ...) \
+( \
+ _Generic((void (*)(TYPE, typeof(s))) 0, \
+ void (*)(short, const char *): a2sh_c, \
+ void (*)(short, const void *): a2sh_c, \
+ void (*)(short, char *): a2sh_nc, \
+ void (*)(short, void *): a2sh_nc, \
+ void (*)(int, const char *): a2si_c, \
+ void (*)(int, const void *): a2si_c, \
+ void (*)(int, char *): a2si_nc, \
+ void (*)(int, void *): a2si_nc, \
+ void (*)(long, const char *): a2sl_c, \
+ void (*)(long, const void *): a2sl_c, \
+ void (*)(long, char *): a2sl_nc, \
+ void (*)(long, void *): a2sl_nc, \
+ void (*)(long long, const char *): a2sll_c, \
+ void (*)(long long, const void *): a2sll_c, \
+ void (*)(long long, char *): a2sll_nc, \
+ void (*)(long long, void *): a2sll_nc, \
+ void (*)(unsigned short, const char *): a2uh_c, \
+ void (*)(unsigned short, const void *): a2uh_c, \
+ void (*)(unsigned short, char *): a2uh_nc, \
+ void (*)(unsigned short, void *): a2uh_nc, \
+ void (*)(unsigned int, const char *): a2ui_c, \
+ void (*)(unsigned int, const void *): a2ui_c, \
+ void (*)(unsigned int, char *): a2ui_nc, \
+ void (*)(unsigned int, void *): a2ui_nc, \
+ void (*)(unsigned long, const char *): a2ul_c, \
+ void (*)(unsigned long, const void *): a2ul_c, \
+ void (*)(unsigned long, char *): a2ul_nc, \
+ void (*)(unsigned long, void *): a2ul_nc, \
+ void (*)(unsigned long long, const char *): a2ull_c, \
+ void (*)(unsigned long long, const void *): a2ull_c, \
+ void (*)(unsigned long long, char *): a2ull_nc, \
+ void (*)(unsigned long long, void *): a2ull_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+
+#define a2sh(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2sh_c, \
+ const void *: a2sh_c, \
+ char *: a2sh_nc, \
+ void *: a2sh_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2si(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2si_c, \
+ const void *: a2si_c, \
+ char *: a2si_nc, \
+ void *: a2si_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2sl(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2sl_c, \
+ const void *: a2sl_c, \
+ char *: a2sl_nc, \
+ void *: a2sl_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2sll(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2sll_c, \
+ const void *: a2sll_c, \
+ char *: a2sll_nc, \
+ void *: a2sll_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2uh(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2uh_c, \
+ const void *: a2uh_c, \
+ char *: a2uh_nc, \
+ void *: a2uh_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2ui(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2ui_c, \
+ const void *: a2ui_c, \
+ char *: a2ui_nc, \
+ void *: a2ui_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2ul(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2ul_c, \
+ const void *: a2ul_c, \
+ char *: a2ul_nc, \
+ void *: a2ul_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+#define a2ull(n, s, ...) \
+( \
+ _Generic(s, \
+ const char *: a2ull_c, \
+ const void *: a2ull_c, \
+ char *: a2ull_nc, \
+ void *: a2ull_nc \
+ )(n, s, __VA_ARGS__) \
+)
+
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sh_c(short *restrict n, const char *s,
+ const char **restrict endp, int base, short min, short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2si_c(int *restrict n, const char *s,
+ const char **restrict endp, int base, int min, int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sl_c(long *restrict n, const char *s,
+ const char **restrict endp, int base, long min, long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sll_c(long long *restrict n, const char *s,
+ const char **restrict endp, int base, long long min, long long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2uh_c(unsigned short *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned short min,
+ unsigned short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ui_c(unsigned int *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned int min, unsigned int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ul_c(unsigned long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long min, unsigned long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ull_c(unsigned long long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long long min,
+ unsigned long long max);
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sh_nc(short *restrict n, char *s,
+ char **restrict endp, int base, short min, short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2si_nc(int *restrict n, char *s,
+ char **restrict endp, int base, int min, int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sl_nc(long *restrict n, char *s,
+ char **restrict endp, int base, long min, long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sll_nc(long long *restrict n, char *s,
+ char **restrict endp, int base, long long min, long long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2uh_nc(unsigned short *restrict n, char *s,
+ char **restrict endp, int base, unsigned short min, unsigned short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ui_nc(unsigned int *restrict n, char *s,
+ char **restrict endp, int base, unsigned int min, unsigned int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ul_nc(unsigned long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long min, unsigned long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ull_nc(unsigned long long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long long min,
+ unsigned long long max);
+
+
+inline int
+a2sh_c(short *restrict n, const char *s,
+ const char **restrict endp, int base, short min, short max)
+{
+ return a2sh(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2si_c(int *restrict n, const char *s,
+ const char **restrict endp, int base, int min, int max)
+{
+ return a2si(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sl_c(long *restrict n, const char *s,
+ const char **restrict endp, int base, long min, long max)
+{
+ return a2sl(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sll_c(long long *restrict n, const char *s,
+ const char **restrict endp, int base, long long min, long long max)
+{
+ return a2sll(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2uh_c(unsigned short *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned short min,
+ unsigned short max)
+{
+ return a2uh(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ui_c(unsigned int *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned int min, unsigned int max)
+{
+ return a2ui(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ul_c(unsigned long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long min, unsigned long max)
+{
+ return a2ul(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ull_c(unsigned long long *restrict n, const char *s,
+ const char **restrict endp, int base, unsigned long long min,
+ unsigned long long max)
+{
+ return a2ull(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sh_nc(short *restrict n, char *s,
+ char **restrict endp, int base, short min, short max)
+{
+ int status;
+
+ *n = strtoi_(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2si_nc(int *restrict n, char *s,
+ char **restrict endp, int base, int min, int max)
+{
+ int status;
+
+ *n = strtoi_(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2sl_nc(long *restrict n, char *s,
+ char **restrict endp, int base, long min, long max)
+{
+ int status;
+
+ *n = strtoi_(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2sll_nc(long long *restrict n, char *s,
+ char **restrict endp, int base, long long min, long long max)
+{
+ int status;
+
+ *n = strtoi_(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2uh_nc(unsigned short *restrict n, char *s,
+ char **restrict endp, int base, unsigned short min,
+ unsigned short max)
+{
+ int status;
+
+ *n = strtou_noneg(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2ui_nc(unsigned int *restrict n, char *s,
+ char **restrict endp, int base, unsigned int min, unsigned int max)
+{
+ int status;
+
+ *n = strtou_noneg(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2ul_nc(unsigned long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long min, unsigned long max)
+{
+ int status;
+
+ *n = strtou_noneg(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+inline int
+a2ull_nc(unsigned long long *restrict n, char *s,
+ char **restrict endp, int base, unsigned long long min,
+ unsigned long long max)
+{
+ int status;
+
+ *n = strtou_noneg(s, endp, base, min, max, &status);
+ if (status != 0) {
+ errno = status;
+ return -1;
+ }
+ return 0;
+}
+
+
+#endif // include guard
diff --git a/lib/atoi/str2i.c b/lib/atoi/str2i.c
new file mode 100644
index 0000000..25ce360
--- /dev/null
+++ b/lib/atoi/str2i.c
@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2007-2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/str2i.h"
+
+
+extern inline int str2sh(short *restrict n, const char *restrict s);
+extern inline int str2si(int *restrict n, const char *restrict s);
+extern inline int str2sl(long *restrict n, const char *restrict s);
+extern inline int str2sll(long long *restrict n, const char *restrict s);
+extern inline int str2uh(unsigned short *restrict n, const char *restrict s);
+extern inline int str2ui(unsigned int *restrict n, const char *restrict s);
+extern inline int str2ul(unsigned long *restrict n, const char *restrict s);
+extern inline int str2ull(unsigned long long *restrict n, const char *restrict s);
diff --git a/lib/atoi/str2i.h b/lib/atoi/str2i.h
new file mode 100644
index 0000000..b3ded03
--- /dev/null
+++ b/lib/atoi/str2i.h
@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2007-2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+#include <stddef.h>
+
+#include "atoi/a2i.h"
+#include "attr.h"
+
+
+#define str2i(TYPE, ...) \
+( \
+ _Generic((TYPE) 0, \
+ short: str2sh, \
+ int: str2si, \
+ long: str2sl, \
+ long long: str2sll, \
+ unsigned short: str2uh, \
+ unsigned int: str2ui, \
+ unsigned long: str2ul, \
+ unsigned long long: str2ull \
+ )(__VA_ARGS__) \
+)
+
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sh(short *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2si(int *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sl(long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sll(long long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2uh(unsigned short *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ui(unsigned int *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ul(unsigned long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ull(unsigned long long *restrict n, const char *restrict s);
+
+
+inline int
+str2sh(short *restrict n, const char *restrict s)
+{
+ return a2sh(n, s, NULL, 0, SHRT_MIN, SHRT_MAX);
+}
+
+
+inline int
+str2si(int *restrict n, const char *restrict s)
+{
+ return a2si(n, s, NULL, 0, INT_MIN, INT_MAX);
+}
+
+
+inline int
+str2sl(long *restrict n, const char *restrict s)
+{
+ return a2sl(n, s, NULL, 0, LONG_MIN, LONG_MAX);
+}
+
+
+inline int
+str2sll(long long *restrict n, const char *restrict s)
+{
+ return a2sll(n, s, NULL, 0, LLONG_MIN, LLONG_MAX);
+}
+
+
+inline int
+str2uh(unsigned short *restrict n, const char *restrict s)
+{
+ return a2uh(n, s, NULL, 0, 0, USHRT_MAX);
+}
+
+
+inline int
+str2ui(unsigned int *restrict n, const char *restrict s)
+{
+ return a2ui(n, s, NULL, 0, 0, UINT_MAX);
+}
+
+
+inline int
+str2ul(unsigned long *restrict n, const char *restrict s)
+{
+ return a2ul(n, s, NULL, 0, 0, ULONG_MAX);
+}
+
+
+inline int
+str2ull(unsigned long long *restrict n, const char *restrict s)
+{
+ return a2ull(n, s, NULL, 0, 0, ULLONG_MAX);
+}
+
+
+#endif // include guard
diff --git a/lib/atoi/strtoi.c b/lib/atoi/strtoi.c
new file mode 100644
index 0000000..197707b
--- /dev/null
+++ b/lib/atoi/strtoi.c
@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/strtoi.h"
+
+#include <stdint.h>
+
+
+extern inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+ intmax_t min, intmax_t max, int *restrict status);
+extern inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+ uintmax_t min, uintmax_t max, int *restrict status);
diff --git a/lib/atoi/strtoi.h b/lib/atoi/strtoi.h
new file mode 100644
index 0000000..1f061fc
--- /dev/null
+++ b/lib/atoi/strtoi.h
@@ -0,0 +1,96 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/param.h>
+
+#include "attr.h"
+
+
+#define strtoNmax(TYPE, ...) \
+( \
+ _Generic((TYPE) 0, \
+ intmax_t: strtoimax, \
+ uintmax_t: strtoumax \
+ )(__VA_ARGS__) \
+)
+
+
+#define strtoN(s, endp, base, min, max, status, TYPE) \
+({ \
+ const char *s_ = s; \
+ char **endp_ = endp; \
+ int base_ = base; \
+ TYPE min_ = min; \
+ TYPE max_ = max; \
+ int *status_ = status; \
+ \
+ int e_, st_; \
+ char *end_; \
+ TYPE n_; \
+ \
+ if (endp_ == NULL) \
+ endp_ = &end_; \
+ if (status_ == NULL) \
+ status_ = &st_; \
+ \
+ if (base_ != 0 && (base_ < 0 || base_ > 36)) { \
+ *status_ = EINVAL; \
+ n_ = 0; \
+ \
+ } else { \
+ e_ = errno; \
+ errno = 0; \
+ n_ = strtoNmax(TYPE, s_, endp_, base_); \
+ \
+ if (*endp_ == s_) \
+ *status_ = ECANCELED; \
+ else if (errno == ERANGE || n_ < min_ || n_ > max_) \
+ *status_ = ERANGE; \
+ else if (**endp_ != '\0') \
+ *status_ = ENOTSUP; \
+ else \
+ *status_ = 0; \
+ \
+ errno = e_; \
+ } \
+ MAX(min_, MIN(max_, n_)); \
+})
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+ intmax_t min, intmax_t max, int *restrict status);
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+ uintmax_t min, uintmax_t max, int *restrict status);
+
+
+inline intmax_t
+strtoi_(const char *s, char **restrict endp, int base,
+ intmax_t min, intmax_t max, int *restrict status)
+{
+ return strtoN(s, endp, base, min, max, status, intmax_t);
+}
+
+
+inline uintmax_t
+strtou_(const char *s, char **restrict endp, int base,
+ uintmax_t min, uintmax_t max, int *restrict status)
+{
+ return strtoN(s, endp, base, min, max, status, uintmax_t);
+}
+
+
+#endif // include guard
diff --git a/lib/atoi/strtou_noneg.c b/lib/atoi/strtou_noneg.c
new file mode 100644
index 0000000..71cacbd
--- /dev/null
+++ b/lib/atoi/strtou_noneg.c
@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/strtou_noneg.h"
+
+#include <stdint.h>
+
+
+extern inline uintmax_t strtou_noneg(const char *s, char **restrict endp,
+ int base, uintmax_t min, uintmax_t max, int *restrict status);
diff --git a/lib/atoi/strtou_noneg.h b/lib/atoi/strtou_noneg.h
new file mode 100644
index 0000000..6d77adf
--- /dev/null
+++ b/lib/atoi/strtou_noneg.h
@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "atoi/strtoi.h"
+#include "attr.h"
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline uintmax_t strtou_noneg(const char *s, char **restrict endp,
+ int base, uintmax_t min, uintmax_t max, int *restrict status);
+
+
+inline uintmax_t
+strtou_noneg(const char *s, char **restrict endp, int base,
+ uintmax_t min, uintmax_t max, int *restrict status)
+{
+ int st;
+
+ if (status == NULL)
+ status = &st;
+ if (strtoi_(s, endp, base, 0, 1, status) == 0 && *status == ERANGE)
+ return min;
+
+ return strtou_(s, endp, base, min, max, status);
+}
+
+
+#endif // include guard