Initial commit

tools/gnulib/patches/000-bootstrap.patch

@@ -0,0 +1,54 @@
+--- a/build-aux/bootstrap
++++ b/build-aux/bootstrap
+@@ -237,14 +237,14 @@ test -r "$conffile" && . "$conffile"
+ 
+ check_exists() {
+   if test "$1" = "--verbose"; then
+-    ($2 --version </dev/null) >/dev/null 2>&1
++    ($2 $3 $4 --version </dev/null) >/dev/null 2>&1
+     if test $? -ge 126; then
+       # If not found, run with diagnostics as one may be
+       # presented with env variables to set to find the right version
+-      ($2 --version </dev/null)
++      ($2 $3 $4 --version </dev/null)
+     fi
+   else
+-    ($1 --version </dev/null) >/dev/null 2>&1
++    ($@ --version </dev/null) >/dev/null 2>&1
+   fi
+ 
+   test $? -lt 126
+@@ -309,7 +309,7 @@ p
+ q'
+ 
+ get_version() {
+-  app=$1
++  app="$@"
+ 
+   $app --version >/dev/null 2>&1 || { $app --version; return 1; }
+ 
+@@ -366,13 +366,13 @@ check_versions() {
+     if [ "$req_ver" = "-" ]; then
+       # Merely require app to exist; not all prereq apps are well-behaved
+       # so we have to rely on $? rather than get_version.
+-      if ! check_exists --verbose $app; then
++      if ! check_exists --verbose "$app"; then
+         warn_ "Error: '$app' not found"
+         ret=1
+       fi
+     else
+       # Require app to produce a new enough version string.
+-      inst_ver=$(get_version $app)
++      inst_ver=$(get_version "$app")
+       if [ ! "$inst_ver" ]; then
+         warn_ "Error: '$app' not found"
+         ret=1
+@@ -1157,7 +1157,7 @@ autogen()
+   # two just-pre-run programs.
+ 
+   # Import from gettext.
+-  with_gettext=yes
++  with_gettext=no
+   grep '^[	 ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
+       with_gettext=no
+ 

tools/gnulib/patches/010-autoconf-version.patch

@@ -0,0 +1,47 @@
+--- a/gnulib-tool
++++ b/gnulib-tool
+@@ -346,6 +346,34 @@ Options for --import, --add/remove-impor
+ Report bugs to <bug-gnulib@gnu.org>."
+ }
+ 
++get_version_sed='
++# Move version to start of line.
++s/.*[v ]\([0-9]\)/\1/
++
++# Skip lines that do not start with version.
++/^[0-9]/!d
++
++# Remove characters after the version.
++s/[^.a-z0-9-].*//
++
++# The first component must be digits only.
++s/^\([0-9]*\)[a-z-].*/\1/
++
++# The following essentially does s/5.005/5.5/
++s/\.0*\([1-9]\)/.\1/g
++p
++q'
++
++# get_version
++# copied from build-aux/bootstrap
++get_version () {
++  app=$1
++
++  $app --version >/dev/null 2>&1 || { $app --version; return 1; }
++
++  $app --version 2>&1 | sed -n "$get_version_sed"
++}
++
+ # func_version
+ # outputs to stdout the --version message.
+ func_version ()
+@@ -1620,6 +1648,9 @@ func_determine_path_separator
+   fi
+   case "$autoconf_minversion" in
+     1.* | 2.[0-5]* | 2.6[0-3]*)
++      # if the version of autoconf in use is high enough, do not error
++      case "$(get_version autoconf)" in 1.* | 2.[0-5]* | 2.6[0-3]*) false ;; esac && \
++      func_warning "gnulib requires a newer version of autoconf than configure.ac ( $DEFAULT_AUTOCONF_MINVERSION > AC_PREREQ([$autoconf_minversion]) )" || \
+       func_fatal_error "minimum supported autoconf version is 2.64. Try adding AC_PREREQ([$DEFAULT_AUTOCONF_MINVERSION]) to your configure.ac." ;;
+   esac
+ 

tools/gnulib/patches/120-unmangle-darwin-fts-h.patch

@@ -0,0 +1,19 @@
+--- /dev/null
++++ b/lib/fts.h
+@@ -0,0 +1,6 @@
++#ifdef __APPLE__
++# define _FTS_H_ 1
++# include <fts_.h>
++#else
++# include_next <fts.h>
++#endif
+--- a/modules/fts
++++ b/modules/fts
+@@ -2,6 +2,7 @@ Description:
+ Traverse a file hierarchy.
+ 
+ Files:
++lib/fts.h
+ lib/fts_.h
+ lib/fts.c
+ lib/fts-cycle.c

tools/gnulib/patches/150-portable-tdestroy.patch

@@ -0,0 +1,193 @@
+--- a/lib/search.in.h
++++ b/lib/search.in.h
+@@ -112,6 +112,11 @@ _GL_CXXALIASWARN (lsearch);
+ #   define twalk rpl_twalk
+ #  endif
+ # endif
++# if @REPLACE_TDESTROY@
++#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
++#   define tdestroy rpl_tdestroy
++#  endif
++# endif
+ 
+ /* See <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/search.h.html>
+        <https://pubs.opengroup.org/onlinepubs/9699919799/functions/tsearch.html>
+@@ -137,6 +142,7 @@ extern "C" {
+ # if !GNULIB_defined_search_fn_types
+ typedef int (*_gl_search_compar_fn) (const void *, const void *);
+ typedef void (*_gl_search_action_fn) (const void *, VISIT, int);
++typedef void (*_gl_search_free_fn) (void *);
+ #  define GNULIB_defined_search_fn_types 1
+ # endif
+ # ifdef __cplusplus
+@@ -252,9 +258,36 @@ _GL_CXXALIAS_SYS (twalk, void,
+ _GL_CXXALIASWARN (twalk);
+ # endif
+ 
++/* Removes the whole tree pointed to by root,
++   freeing all resources allocated by the tsearch() function.
++   The FREE_NODE function is called:
++     - For the data in each tree node.
++     - Even when no such work is necessary, to a function doing nothing
++   The arguments passed to FREE_NODE are:
++     1. The pointer to the data. */
++# if @REPLACE_TDESTROY@
++_GL_FUNCDECL_RPL (tdestroy, void,
++                  (void *vroot, _gl_search_free_fn freefct)
++                  _GL_ARG_NONNULL ((2)));
++_GL_CXXALIAS_RPL (tdestroy, void,
++                  (void *vroot, _gl_search_free_fn freefct));
++# else
++#  if !@HAVE_TDESTROY@
++_GL_FUNCDECL_SYS (tdestroy, void,
++                  (void *vroot, _gl_search_free_fn freefct)
++                  _GL_ARG_NONNULL ((2)));
++#  endif
++_GL_CXXALIAS_SYS (tdestroy, void,
++                  (void *vroot, _gl_search_free_fn freefct));
++# endif
++# if __GLIBC__ >= 2
++_GL_CXXALIASWARN (tdestroy);
++# endif
++
+ /* Flags used by tsearch.c.  */
+ # define GNULIB_defined_tsearch  (@REPLACE_TSEARCH@ || !@HAVE_TSEARCH@)
+ # define GNULIB_defined_twalk    (@REPLACE_TWALK@ || !@HAVE_TWALK@)
++# define GNULIB_defined_tdestroy (@REPLACE_TDESTROY@ || !@HAVE_TDESTROY@)
+ 
+ #elif defined GNULIB_POSIXCHECK
+ # undef tsearch
+@@ -277,6 +310,11 @@ _GL_WARN_ON_USE (tdelete, "tdelete is un
+ _GL_WARN_ON_USE (twalk, "twalk is unportable - "
+                  "use gnulib module tsearch for portability");
+ # endif
++# undef tdestroy
++# if HAVE_RAW_DECL_TDESTROY
++_GL_WARN_ON_USE (tdestroy, "tdestroy is unportable - "
++                 "use gnulib module tsearch for portability");
++# endif
+ #endif
+ 
+ 
+--- a/lib/tsearch.c
++++ b/lib/tsearch.c
+@@ -98,12 +98,14 @@
+ 
+ typedef int (*__compar_fn_t) (const void *, const void *);
+ typedef void (*__action_fn_t) (const void *, VISIT, int);
++typedef void (*__free_fn_t) (void *);
+ 
+ #ifndef weak_alias
+ # define __tsearch tsearch
+ # define __tfind tfind
+ # define __tdelete tdelete
+ # define __twalk twalk
++# define __tdestroy tdestroy
+ #endif
+ 
+ #ifndef internal_function
+@@ -656,7 +658,7 @@ weak_alias (__twalk, twalk)
+ #endif /* GNULIB_defined_twalk */
+ 
+ 
+-#ifdef _LIBC
++#if defined(_LIBC) || GNULIB_defined_tdestroy
+ 
+ /* The standardized functions miss an important functionality: the
+    tree cannot be removed easily.  We provide a function to do this.  */
+@@ -683,6 +685,8 @@ __tdestroy (void *vroot, __free_fn_t fre
+   if (root != NULL)
+     tdestroy_recurse (root, freefct);
+ }
++#ifdef weak_alias
+ weak_alias (__tdestroy, tdestroy)
++#endif
+ 
+-#endif /* _LIBC */
++#endif /* defined(_LIBC) || GNULIB_defined_tdestroy */
+--- a/m4/search_h.m4
++++ b/m4/search_h.m4
+@@ -39,7 +39,7 @@ AC_DEFUN_ONCE([gl_SEARCH_H],
+   dnl Check for declarations of anything we want to poison if the
+   dnl corresponding gnulib module is not in use.
+   gl_WARN_ON_USE_PREPARE([[#include <search.h>
+-    ]], [tdelete tfind tsearch twalk])
++    ]], [tdelete tfind tsearch twalk tdestroy])
+ 
+   AC_REQUIRE([AC_C_RESTRICT])
+ ])
+@@ -75,8 +75,10 @@ AC_DEFUN([gl_SEARCH_H_DEFAULTS],
+   gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LFIND], [1])
+   gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEARCH], [1])
+   dnl Assume proper GNU behavior unless another module says otherwise.
+-  HAVE_TSEARCH=1;    AC_SUBST([HAVE_TSEARCH])
+-  HAVE_TWALK=1;      AC_SUBST([HAVE_TWALK])
+-  REPLACE_TSEARCH=0; AC_SUBST([REPLACE_TSEARCH])
+-  REPLACE_TWALK=0;   AC_SUBST([REPLACE_TWALK])
++  HAVE_TSEARCH=1;     AC_SUBST([HAVE_TSEARCH])
++  HAVE_TWALK=1;       AC_SUBST([HAVE_TWALK])
++  HAVE_TDESTROY=1;    AC_SUBST([HAVE_TDESTROY])
++  REPLACE_TSEARCH=0;  AC_SUBST([REPLACE_TSEARCH])
++  REPLACE_TWALK=0;    AC_SUBST([REPLACE_TWALK])
++  REPLACE_TDESTROY=0; AC_SUBST([REPLACE_TDESTROY])
+ ])
+--- a/m4/tsearch.m4
++++ b/m4/tsearch.m4
+@@ -9,6 +9,7 @@ AC_DEFUN([gl_FUNC_TSEARCH],
+   AC_REQUIRE([gl_SEARCH_H_DEFAULTS])
+   gl_CHECK_FUNCS_ANDROID([tsearch], [[#include <search.h>]])
+   gl_CHECK_FUNCS_ANDROID([twalk], [[#include <search.h>]])
++  gl_CHECK_FUNCS_ANDROID([tdestroy], [[#include <search.h>]])
+   if test $ac_cv_func_tsearch = yes; then
+     dnl On OpenBSD 4.0, the return value of tdelete() is incorrect.
+     AC_REQUIRE([AC_PROG_CC])
+@@ -50,6 +51,7 @@ main ()
+       *no)
+         REPLACE_TSEARCH=1
+         REPLACE_TWALK=1
++        REPLACE_TDESTROY=1
+         ;;
+     esac
+   else
+@@ -64,6 +66,12 @@ main ()
+       future*) REPLACE_TWALK=1 ;;
+     esac
+   fi
++  if test $ac_cv_func_tdestroy != yes; then
++    HAVE_TDESTROY=0
++    case "$gl_cv_onwards_func_tdestroy" in
++      future*) REPLACE_TDESTROY=1 ;;
++    esac
++  fi
+ ])
+ 
+ # Prerequisites of lib/tsearch.c.
+--- a/modules/search
++++ b/modules/search
+@@ -37,8 +37,10 @@ search.h: search.in.h $(top_builddir)/co
+ 	      -e 's/@''GNULIB_MDA_LSEARCH''@/$(GNULIB_MDA_LSEARCH)/g' \
+ 	      -e 's|@''HAVE_TSEARCH''@|$(HAVE_TSEARCH)|g' \
+ 	      -e 's|@''HAVE_TWALK''@|$(HAVE_TWALK)|g' \
++	      -e 's|@''HAVE_TDESTROY''@|$(HAVE_TDESTROY)|g' \
+ 	      -e 's|@''REPLACE_TSEARCH''@|$(REPLACE_TSEARCH)|g' \
+ 	      -e 's|@''REPLACE_TWALK''@|$(REPLACE_TWALK)|g' \
++	      -e 's|@''REPLACE_TDESTROY''@|$(REPLACE_TDESTROY)|g' \
+ 	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+ 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+ 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+--- a/modules/tsearch
++++ b/modules/tsearch
+@@ -11,7 +11,12 @@ search
+ configure.ac:
+ gl_FUNC_TSEARCH
+ gl_CONDITIONAL([GL_COND_OBJ_TSEARCH],
+-               [test $HAVE_TSEARCH = 0 || test $HAVE_TWALK = 0 || test $REPLACE_TSEARCH = 1 || test $REPLACE_TWALK = 1])
++               [test $HAVE_TSEARCH = 0 ||
++                test $HAVE_TWALK = 0 ||
++                test $HAVE_TDESTROY = 0 ||
++                test $REPLACE_TSEARCH = 1 ||
++                test $REPLACE_TWALK = 1 ||
++                test $REPLACE_TDESTROY = 1])
+ AM_COND_IF([GL_COND_OBJ_TSEARCH], [
+   gl_PREREQ_TSEARCH
+ ])

tools/gnulib/patches/160-flag-reallocarray.patch

@@ -0,0 +1,115 @@
+--- a/lib/ialloc.h
++++ b/lib/ialloc.h
+@@ -106,6 +106,8 @@ icalloc (idx_t n, idx_t s)
+   return calloc (n, s);
+ }
+ 
++#if GNULIB_REALLOCARRAY
++
+ /* ireallocarray (ptr, num, size) is like reallocarray (ptr, num, size).
+    It returns a non-NULL pointer to num * size bytes of memory.
+    Upon failure, it returns NULL with errno set.  */
+@@ -131,6 +133,8 @@ ireallocarray (void *p, idx_t n, idx_t s
+     return _gl_alloc_nomem ();
+ }
+ 
++#endif /* GNULIB_REALLOCARRAY */
++
+ #ifdef __cplusplus
+ }
+ #endif
+--- a/lib/xmalloc.c
++++ b/lib/xmalloc.c
+@@ -51,12 +51,16 @@ ximalloc (idx_t s)
+   return nonnull (imalloc (s));
+ }
+ 
++#if GNULIB_REALLOCARRAY
++
+ char *
+ xcharalloc (size_t n)
+ {
+   return XNMALLOC (n, char);
+ }
+ 
++#endif /* GNULIB_REALLOCARRAY */
++
+ /* Change the size of an allocated block of memory P to S bytes,
+    with error checking.  */
+ 
+@@ -75,6 +79,8 @@ xirealloc (void *p, idx_t s)
+   return nonnull (irealloc (p, s));
+ }
+ 
++#if GNULIB_REALLOCARRAY
++
+ /* Change the size of an allocated block of memory P to an array of N
+    objects each of S bytes, with error checking.  */
+ 
+@@ -205,6 +211,8 @@ x2nrealloc (void *p, size_t *pn, size_t
+   return p;
+ }
+ 
++#endif /* GNULIB_REALLOCARRAY */
++
+ /* Grow PA, which points to an array of *PN items, and return the
+    location of the reallocated array, updating *PN to reflect its
+    new size.  The new array will contain at least N_INCR_MIN more
+--- a/lib/xalloc.h
++++ b/lib/xalloc.h
+@@ -129,6 +129,7 @@ char *xstrdup (char const *str)
+ # define XCALLOC(n, t) \
+     ((t *) (sizeof (t) == 1 ? xzalloc (n) : xcalloc (n, sizeof (t))))
+ 
++# if GNULIB_REALLOCARRAY
+ 
+ /* Allocate an array of N objects, each with S bytes of memory,
+    dynamically, with error checking.  S must be nonzero.  */
+@@ -156,6 +157,8 @@ char *xcharalloc (size_t n)
+   _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+   _GL_ATTRIBUTE_ALLOC_SIZE ((1)) _GL_ATTRIBUTE_RETURNS_NONNULL;
+ 
++# endif /* GNULIB_REALLOCARRAY */
++
+ #endif /* GNULIB_XALLOC */
+ 
+ 
+--- a/lib/safe-alloc.h
++++ b/lib/safe-alloc.h
+@@ -36,6 +36,8 @@ _GL_INLINE_HEADER_BEGIN
+ # define SAFE_ALLOC_INLINE _GL_INLINE
+ #endif
+ 
++#if GNULIB_REALLOCARRAY
++
+ /* Don't call these directly - use the macros below.  */
+ SAFE_ALLOC_INLINE void *
+ safe_alloc_realloc_n (void *ptr, size_t count, size_t size)
+@@ -51,6 +53,9 @@ safe_alloc_realloc_n (void *ptr, size_t
+ #endif
+   return ptr;
+ }
++
++#endif /* GNULIB_REALLOCARRAY */
++
+ _GL_ATTRIBUTE_NODISCARD SAFE_ALLOC_INLINE int
+ safe_alloc_check (void *ptr)
+ {
+@@ -84,6 +89,8 @@ safe_alloc_check (void *ptr)
+ #define ALLOC_N(ptr, count) \
+   safe_alloc_check ((ptr) = calloc (count, sizeof *(ptr)))
+ 
++#if GNULIB_REALLOCARRAY
++
+ /**
+  * ALLOC_N_UNINITIALIZED:
+  * @ptr: pointer to allocated memory
+@@ -112,6 +119,8 @@ safe_alloc_check (void *ptr)
+ #define REALLOC_N(ptr, count) \
+   safe_alloc_check ((ptr) = safe_alloc_realloc_n (ptr, count, sizeof *(ptr)))
+ 
++#endif /* GNULIB_REALLOCARRAY */
++
+ /**
+  * FREE:
+  * @ptr: pointer holding address to be freed

tools/gnulib/patches/200-force-disable-after-configure.patch

@@ -0,0 +1,56 @@
+--- a/lib/fcntl.c
++++ b/lib/fcntl.c
+@@ -198,6 +198,8 @@ static int klibc_fcntl (int fd, int acti
+    FD_CLOEXEC is portable, but other flags may be present); otherwise
+    return -1 and set errno.  */
+ 
++#if (GNULIB_defined_fcntl || GNULIB_defined_rpl_fcntl)
++
+ int
+ fcntl (int fd, int action, /* arg */...)
+ #undef fcntl
+@@ -443,6 +445,8 @@ fcntl (int fd, int action, /* arg */...)
+   return result;
+ }
+ 
++#endif /* (GNULIB_defined_fcntl || GNULIB_defined_rpl_fcntl) */
++
+ static int
+ rpl_fcntl_DUPFD (int fd, int target)
+ {
+--- a/lib/stdlib.in.h
++++ b/lib/stdlib.in.h
+@@ -1447,10 +1447,16 @@ _GL_FUNCDECL_RPL (reallocarray, void *,
+                   (void *ptr, size_t nmemb, size_t size));
+ _GL_CXXALIAS_RPL (reallocarray, void *,
+                   (void *ptr, size_t nmemb, size_t size));
++#  if !GNULIB_defined_rpl_reallocarray
++#   define GNULIB_defined_rpl_reallocarray 1
++#  endif
+ # else
+ #  if ! @HAVE_REALLOCARRAY@
+ _GL_FUNCDECL_SYS (reallocarray, void *,
+                   (void *ptr, size_t nmemb, size_t size));
++#   if !GNULIB_defined_reallocarray
++#    define GNULIB_defined_reallocarray 1
++#   endif
+ #  endif
+ _GL_CXXALIAS_SYS (reallocarray, void *,
+                   (void *ptr, size_t nmemb, size_t size));
+--- a/lib/reallocarray.c
++++ b/lib/reallocarray.c
+@@ -23,6 +23,8 @@
+ #include <stdlib.h>
+ #include <errno.h>
+ 
++#if (GNULIB_defined_reallocarray || GNULIB_defined_rpl_reallocarray)
++
+ void *
+ reallocarray (void *ptr, size_t nmemb, size_t size)
+ {
+@@ -36,3 +38,5 @@ reallocarray (void *ptr, size_t nmemb, s
+   /* Rely on the semantics of GNU realloc.  */
+   return realloc (ptr, nbytes);
+ }
++
++#endif /* (GNULIB_defined_reallocarray || GNULIB_defined_rpl_reallocarray) */

tools/gnulib/patches/320-modules-fallocate-posix.patch

@@ -0,0 +1,326 @@
+--- /dev/null
++++ b/modules/fallocate-posix
+@@ -0,0 +1,43 @@
++Description:
++posix_fallocate function that is glibc compatible.
++
++Files:
++lib/posix_fallocate.c
++m4/fcntl_h.m4
++m4/posix_fallocate.m4
++
++Depends-on:
++errno          [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++fcntl          [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++fstat          [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++ftruncate      [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++pread          [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++pwrite         [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++stdint         [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++sys_stat       [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++unistd         [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1]
++fcntl-h
++
++configure.ac:
++gl_FUNC_POSIX_FALLOCATE
++gl_CONDITIONAL([GL_COND_OBJ_POSIX_FALLOCATE],
++               [test $HAVE_FALLOCATE_POSIX = 0 || test $REPLACE_FALLOCATE_POSIX = 1])
++AM_COND_IF([GL_COND_OBJ_POSIX_FALLOCATE], [
++  gl_PREREQ_POSIX_FALLOCATE
++])
++gl_MODULE_INDICATOR([fallocate-posix])
++gl_FCNTL_MODULE_INDICATOR([fallocate-posix])
++
++Makefile.am:
++if GL_COND_OBJ_POSIX_FALLOCATE
++lib_SOURCES += posix_fallocate.c
++endif
++
++Include:
++<fcntl.h>
++
++License:
++LGPLv2+
++
++Maintainer:
++all
+--- /dev/null
++++ b/m4/posix_fallocate.m4
+@@ -0,0 +1,20 @@
++# posix_fallocate.m4 serial 1
++dnl Copyright (C) 2024 Free Software Foundation, Inc.
++dnl This file is free software; the Free Software Foundation
++dnl gives unlimited permission to copy and/or distribute it,
++dnl with or without modifications, as long as this notice is preserved.
++
++AC_DEFUN([gl_FUNC_POSIX_FALLOCATE],
++[
++  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
++  gl_CHECK_FUNCS_ANDROID([posix_fallocate], [[#include <fcntl.h>]])
++  if test "$ac_cv_func_posix_fallocate" = no; then
++    HAVE_FALLOCATE_POSIX=0
++    case "$gl_cv_onwards_func_posix_fallocate" in
++      future*) REPLACE_FALLOCATE_POSIX=1 ;;
++    esac
++  fi
++])
++
++# Prerequisites of lib/posix_fallocate.c.
++AC_DEFUN([gl_PREREQ_POSIX_FALLOCATE], [:])
+--- a/m4/fcntl_h.m4
++++ b/m4/fcntl_h.m4
+@@ -23,7 +23,7 @@ AC_DEFUN_ONCE([gl_FCNTL_H],
+   dnl corresponding gnulib module is not in use, if it is not common
+   dnl enough to be declared everywhere.
+   gl_WARN_ON_USE_PREPARE([[#include <fcntl.h>
+-    ]], [fcntl openat])
++    ]], [fcntl openat posix_fallocate])
+ ])
+ 
+ # gl_FCNTL_MODULE_INDICATOR([modulename])
+@@ -50,6 +50,7 @@ AC_DEFUN([gl_FCNTL_H_REQUIRE_DEFAULTS],
+     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NONBLOCKING])
+     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPEN])
+     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OPENAT])
++    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FALLOCATE_POSIX])
+     dnl Support Microsoft deprecated alias function names by default.
+     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CREAT], [1])
+     gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_OPEN], [1])
+@@ -61,10 +62,12 @@ AC_DEFUN([gl_FCNTL_H_REQUIRE_DEFAULTS],
+ AC_DEFUN([gl_FCNTL_H_DEFAULTS],
+ [
+   dnl Assume proper GNU behavior unless another module says otherwise.
+-  HAVE_FCNTL=1;          AC_SUBST([HAVE_FCNTL])
+-  HAVE_OPENAT=1;         AC_SUBST([HAVE_OPENAT])
+-  REPLACE_CREAT=0;       AC_SUBST([REPLACE_CREAT])
+-  REPLACE_FCNTL=0;       AC_SUBST([REPLACE_FCNTL])
+-  REPLACE_OPEN=0;        AC_SUBST([REPLACE_OPEN])
+-  REPLACE_OPENAT=0;      AC_SUBST([REPLACE_OPENAT])
++  HAVE_FCNTL=1;              AC_SUBST([HAVE_FCNTL])
++  HAVE_OPENAT=1;             AC_SUBST([HAVE_OPENAT])
++  HAVE_FALLOCATE_POSIX=1;    AC_SUBST([HAVE_FALLOCATE_POSIX])
++  REPLACE_CREAT=0;           AC_SUBST([REPLACE_CREAT])
++  REPLACE_FCNTL=0;           AC_SUBST([REPLACE_FCNTL])
++  REPLACE_OPEN=0;            AC_SUBST([REPLACE_OPEN])
++  REPLACE_OPENAT=0;          AC_SUBST([REPLACE_OPENAT])
++  REPLACE_FALLOCATE_POSIX=0; AC_SUBST([REPLACE_FALLOCATE_POSIX])
+ ])
+--- a/modules/fcntl-h
++++ b/modules/fcntl-h
+@@ -40,14 +40,17 @@ fcntl.h: fcntl.in.h $(top_builddir)/conf
+ 	      -e 's/@''GNULIB_NONBLOCKING''@/$(GNULIB_NONBLOCKING)/g' \
+ 	      -e 's/@''GNULIB_OPEN''@/$(GNULIB_OPEN)/g' \
+ 	      -e 's/@''GNULIB_OPENAT''@/$(GNULIB_OPENAT)/g' \
++	      -e 's/@''GNULIB_FALLOCATE_POSIX''@/$(GNULIB_FALLOCATE_POSIX)/g' \
+ 	      -e 's/@''GNULIB_MDA_CREAT''@/$(GNULIB_MDA_CREAT)/g' \
+ 	      -e 's/@''GNULIB_MDA_OPEN''@/$(GNULIB_MDA_OPEN)/g' \
+ 	      -e 's|@''HAVE_FCNTL''@|$(HAVE_FCNTL)|g' \
+ 	      -e 's|@''HAVE_OPENAT''@|$(HAVE_OPENAT)|g' \
++	      -e 's|@''HAVE_FALLOCATE_POSIX''@|$(HAVE_FALLOCATE_POSIX)|g' \
+ 	      -e 's|@''REPLACE_CREAT''@|$(REPLACE_CREAT)|g' \
+ 	      -e 's|@''REPLACE_FCNTL''@|$(REPLACE_FCNTL)|g' \
+ 	      -e 's|@''REPLACE_OPEN''@|$(REPLACE_OPEN)|g' \
+ 	      -e 's|@''REPLACE_OPENAT''@|$(REPLACE_OPENAT)|g' \
++	      -e 's|@''REPLACE_FALLOCATE_POSIX''@|$(REPLACE_FALLOCATE_POSIX)|g' \
+ 	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+ 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+ 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+--- a/lib/fcntl.in.h
++++ b/lib/fcntl.in.h
+@@ -238,6 +238,33 @@ _GL_WARN_ON_USE (openat, "openat is not
+ # endif
+ #endif
+ 
++#if @GNULIB_FALLOCATE_POSIX@
++# if @REPLACE_FALLOCATE_POSIX@
++#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
++#   undef posix_fallocate
++#   define posix_fallocate rpl_posix_fallocate
++#  endif
++_GL_FUNCDECL_RPL (posix_fallocate, int,
++                  (int fd, off_t offset, off_t len));
++_GL_CXXALIAS_RPL (posix_fallocate, int,
++                  (int fd, off_t offset, off_t len));
++# else
++#  if !@HAVE_FALLOCATE_POSIX@
++_GL_FUNCDECL_SYS (posix_fallocate, int,
++                  (int fd, off_t offset, off_t len));
++#  endif
++_GL_CXXALIAS_SYS (posix_fallocate, int,
++                  (int fd, off_t offset, off_t len));
++# endif
++_GL_CXXALIASWARN (posix_fallocate);
++#elif defined GNULIB_POSIXCHECK
++# undef posix_fallocate
++# if HAVE_RAW_DECL_POSIX_FALLOCATE
++_GL_WARN_ON_USE (posix_fallocate, "posix_fallocate is not portable - "
++                 "use gnulib module fallocate-posix for portability");
++# endif
++#endif
++
+ 
+ /* Fix up the FD_* macros, only known to be missing on mingw.  */
+ 
+--- /dev/null
++++ b/lib/posix_fallocate.c
+@@ -0,0 +1,150 @@
++/* posix_fallocate function that is glibc compatible.
++
++   Copyright (C) 2024 Free Software Foundation, Inc.
++
++   This file is free software: you can redistribute it and/or modify
++   it under the terms of the GNU Lesser General Public License as
++   published by the Free Software Foundation; either version 2.1 of the
++   License, or (at your option) any later version.
++
++   This file 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 Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public License
++   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
++
++#include <config.h>
++
++#include <errno.h>
++#include <fcntl.h>
++#include <unistd.h>
++#include <stdint.h>
++#include <sys/fcntl.h>
++#include <sys/stat.h>
++
++#ifdef __APPLE__
++# include <sys/param.h>
++# include <sys/mount.h>
++#else
++# include <sys/statfs.h>
++#endif
++
++/* Reserve storage for the data of the file associated with FD.  This
++   emulation is far from perfect, but the kernel cannot do not much
++   better for network file systems, either.  */
++
++int
++posix_fallocate (int fd, off_t offset, off_t len)
++{
++  int ret;
++  struct stat st;
++
++  if (fd < 0 || offset < 0 || len < 0)
++    return EINVAL;
++
++  /* Perform overflow check.  The outer cast relies on a GCC
++     extension.  */
++  if ((off_t) ((uint64_t) offset + (uint64_t) len) < 0)
++    return EFBIG;
++
++  /* pwrite below will not do the right thing in O_APPEND mode.  */
++  {
++    int flags = fcntl (fd, F_GETFL, 0);
++    if (flags < 0 || (flags & O_APPEND) != 0)
++      return EBADF;
++  }
++
++  /* We have to make sure that this is really a regular file.  */
++  if (fstat (fd, &st) != 0)
++    return EBADF;
++  if (S_ISFIFO (st.st_mode))
++    return ESPIPE;
++  if (! S_ISREG (st.st_mode))
++    return ENODEV;
++
++  if (len == 0)
++    {
++      /* This is racy, but there is no good way to satisfy a
++	 zero-length allocation request.  */
++      if (st.st_size < offset)
++	{
++	  ret = ftruncate (fd, offset);
++
++	  if (ret != 0)
++	    ret = errno;
++	  return ret;
++	}
++      return ret;
++    }
++
++#ifdef __APPLE__
++    fstore_t sto = {F_ALLOCATECONTIG, F_PEOFPOSMODE, 0, offset + len, 0};
++    /* allocate continuous */
++    ret = fcntl (fd, F_PREALLOCATE, &sto);
++    if (ret < 0)
++      {
++        /* allocate non-continuous */
++        sto.fst_flags = F_ALLOCATEALL;
++        ret = fcntl (fd, F_PREALLOCATE, &sto);
++        if (ret < 0)
++          {
++            return ret;
++          }
++      }
++    ret = ftruncate(fd, offset + len);
++#else
++
++  /* Minimize data transfer for network file systems, by issuing
++     single-byte write requests spaced by the file system block size.
++     (Most local file systems have fallocate support, so this fallback
++     code is not used there.)  */
++
++  unsigned increment;
++  {
++    struct statfs f;
++
++    if (fstatfs (fd, &f) != 0)
++      return errno;
++    if (f.f_bsize == 0)
++      increment = 512;
++    else if (f.f_bsize < 4096)
++      increment = f.f_bsize;
++    else
++      /* NFS does not propagate the block size of the underlying
++	 storage and may report a much larger value which would still
++	 leave holes after the loop below, so we cap the increment at
++	 4096.  */
++      increment = 4096;
++  }
++
++  /* Write a null byte to every block.  This is racy; we currently
++     lack a better option.  Compare-and-swap against a file mapping
++     might additional local races, but requires interposition of a
++     signal handler to catch SIGBUS.  */
++  for (offset += (len - 1) % increment; len > 0; offset += increment)
++    {
++      len -= increment;
++
++      if (offset < st.st_size)
++	{
++	  unsigned char c;
++	  ssize_t rsize = pread (fd, &c, 1, offset);
++
++	  if (rsize < 0)
++	    return errno;
++	  /* If there is a non-zero byte, the block must have been
++	     allocated already.  */
++	  else if (rsize == 1 && c != 0)
++	    continue;
++	}
++
++      if (pwrite (fd, "", 1, offset) != 1)
++	return errno;
++    }
++
++#endif /* __APPLE__ */
++
++  return ret;
++}
+--- a/MODULES.html.sh
++++ b/MODULES.html.sh
+@@ -2552,6 +2552,7 @@ func_all_modules ()
+   func_module execve
+   func_module execvp
+   func_module execvpe
++  func_module fallocate-posix
+   func_module fchdir
+   func_module fclose
+   func_module fcntl-h