[PATCH v16 01/20] posix_wrap: tweaks in preparation for libtasn1

[Gary Lin]

From: Daniel Axtens <dja@axtens.net>

 - Define SIZEOF_UNSIGNED_LONG_INT, it's the same as
   SIZEOF_UNSIGNED_LONG.

 - Define WORD_BIT, the size in bits of an int. This is a defined
   in the Single Unix Specification and in gnulib's limits.h. gnulib
   assumes it's 32 bits on all our platforms, including 64 bit
   platforms, so we also use that value.

 - Provide strto[u]l[l] preprocessor macros that resolve to
   grub_strto[u]l[l]. To avoid gcrypt redefining strtoul, we
   also define HAVE_STRTOUL here.

 - Implement c-ctype.h and the functions defined in the header.

 - Implement strncat in string.h.

Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
---
 grub-core/lib/posix_wrap/c-ctype.h   | 114 +++++++++++++++++++++++++++
 grub-core/lib/posix_wrap/limits.h    |   1 +
 grub-core/lib/posix_wrap/stdlib.h    |   8 ++
 grub-core/lib/posix_wrap/string.h    |  21 +++++
 grub-core/lib/posix_wrap/sys/types.h |   1 +
 5 files changed, 145 insertions(+)
 create mode 100644 grub-core/lib/posix_wrap/c-ctype.h

diff --git a/grub-core/lib/posix_wrap/c-ctype.h 
b/grub-core/lib/posix_wrap/c-ctype.h
new file mode 100644
index 000000000..5f8fc8ce3
--- /dev/null
+++ b/grub-core/lib/posix_wrap/c-ctype.h
@@ -0,0 +1,114 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2024  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_POSIX_C_CTYPE_H
+#define GRUB_POSIX_C_CTYPE_H   1
+
+#include <grub/misc.h>
+
+static inline bool
+c_isspace (int c)
+{
+  return !!grub_isspace (c);
+}
+
+static inline bool
+c_isdigit (int c)
+{
+  return !!grub_isdigit (c);
+}
+
+static inline bool
+c_islower (int c)
+{
+  return !!grub_islower (c);
+}
+
+static inline bool
+c_isascii (int c)
+{
+  return !(c & ~0x7f);
+}
+
+static inline bool
+c_isupper (int c)
+{
+  return !!grub_isupper (c);
+}
+
+static inline bool
+c_isxdigit (int c)
+{
+  return !!grub_isxdigit (c);
+}
+
+static inline bool
+c_isprint (int c)
+{
+  return !!grub_isprint (c);
+}
+
+static inline bool
+c_iscntrl (int c)
+{
+  return !grub_isprint (c);
+}
+
+static inline bool
+c_isgraph (int c)
+{
+  return grub_isprint (c) && !grub_isspace (c);
+}
+
+static inline bool
+c_isalnum (int c)
+{
+  return grub_isalpha (c) || grub_isdigit (c);
+}
+
+static inline bool
+c_ispunct (int c)
+{
+  return grub_isprint (c) && !grub_isspace (c) && !c_isalnum (c);
+}
+
+static inline bool
+c_isalpha (int c)
+{
+  return !!grub_isalpha (c);
+}
+
+static inline bool
+c_isblank (int c)
+{
+  return c == ' ' || c == '\t';
+}
+
+static inline int
+c_tolower (int c)
+{
+  return grub_tolower (c);
+}
+
+static inline int
+c_toupper (int c)
+{
+  return grub_toupper (c);
+}
+
+#endif
diff --git a/grub-core/lib/posix_wrap/limits.h 
b/grub-core/lib/posix_wrap/limits.h
index 26918c8a0..4be7b4080 100644
--- a/grub-core/lib/posix_wrap/limits.h
+++ b/grub-core/lib/posix_wrap/limits.h
@@ -41,5 +41,6 @@
 #define LONG_MAX GRUB_LONG_MAX
 
 #define CHAR_BIT 8
+#define WORD_BIT 32
 
 #endif
diff --git a/grub-core/lib/posix_wrap/stdlib.h 
b/grub-core/lib/posix_wrap/stdlib.h
index f5279756a..14e4efdd0 100644
--- a/grub-core/lib/posix_wrap/stdlib.h
+++ b/grub-core/lib/posix_wrap/stdlib.h
@@ -64,4 +64,12 @@ abort (void)
   grub_abort ();
 }
 
+#define strtol grub_strtol
+
+/* for libgcrypt */
+#define HAVE_STRTOUL
+#define strtoul grub_strtoul
+
+#define strtoull grub_strtoull
+
 #endif
diff --git a/grub-core/lib/posix_wrap/string.h 
b/grub-core/lib/posix_wrap/string.h
index 1adb450b5..b0c5928d2 100644
--- a/grub-core/lib/posix_wrap/string.h
+++ b/grub-core/lib/posix_wrap/string.h
@@ -84,6 +84,27 @@ memchr (const void *s, int c, grub_size_t n)
   return grub_memchr (s, c, n);
 }
 
+static inline char *
+strncat(char *dest, const char *src, grub_size_t n)
+{
+  const char *end;
+  char *str = dest;
+  grub_size_t src_len;
+
+  dest += grub_strlen (dest);
+
+  end = grub_memchr (src, '\0', n);
+  if (end != NULL)
+    src_len = (grub_size_t) (end - src);
+  else
+    src_len = n;
+
+  dest[src_len] = '\0';
+  grub_memcpy (dest, src, src_len);
+
+  return str;
+}
+
 #define memcmp grub_memcmp
 #define memcpy grub_memcpy
 #define memmove grub_memmove
diff --git a/grub-core/lib/posix_wrap/sys/types.h 
b/grub-core/lib/posix_wrap/sys/types.h
index eeda543c4..2f3e86549 100644
--- a/grub-core/lib/posix_wrap/sys/types.h
+++ b/grub-core/lib/posix_wrap/sys/types.h
@@ -50,6 +50,7 @@ typedef grub_uint8_t byte;
 typedef grub_addr_t uintptr_t;
 
 #define SIZEOF_UNSIGNED_LONG GRUB_CPU_SIZEOF_LONG
+#define SIZEOF_UNSIGNED_LONG_INT GRUB_CPU_SIZEOF_LONG
 #define SIZEOF_UNSIGNED_INT 4
 #define SIZEOF_UNSIGNED_LONG_LONG 8
 #define SIZEOF_UNSIGNED_SHORT 2
-- 
2.35.3