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gnulib: import chown

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A few sims use this to emulate chown syscalls.
This commit is contained in:
Mike Frysinger
2021-05-29 12:10:38 -04:00
parent e266dea992
commit 64c2e4a530
13 changed files with 895 additions and 84 deletions
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8
gnulib/ChangeLog
View File

@@ -1,3 +1,11 @@
2021-06-08 Mike Frysinger <vapier@gentoo.org>
* update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add chown.
* aclocal.m4, config.in, configure, Makefile.in, import/Makefile.am,
import/Makefile.in, import/m4/gnulib-cache.m4,
import/m4/gnulib-comp.m4: Regenerate.
* import/chown.c, import/fchown-stub.c, import/m4/chown.m4: New files.
2021-05-24 Mike Frysinger <vapier@gentoo.org>
* update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add ffs.

1
gnulib/Makefile.in
View File

@@ -121,6 +121,7 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
$(top_srcdir)/import/m4/builtin-expect.m4 \
$(top_srcdir)/import/m4/canonicalize.m4 \
$(top_srcdir)/import/m4/chdir-long.m4 \
$(top_srcdir)/import/m4/chown.m4 \
$(top_srcdir)/import/m4/clock_time.m4 \
$(top_srcdir)/import/m4/close.m4 \
$(top_srcdir)/import/m4/closedir.m4 \

1
gnulib/aclocal.m4 vendored
View File

@@ -1193,6 +1193,7 @@ m4_include([import/m4/btowc.m4])
m4_include([import/m4/builtin-expect.m4])
m4_include([import/m4/canonicalize.m4])
m4_include([import/m4/chdir-long.m4])
m4_include([import/m4/chown.m4])
m4_include([import/m4/clock_time.m4])
m4_include([import/m4/close.m4])
m4_include([import/m4/closedir.m4])

22
gnulib/config.in
View File

@@ -18,6 +18,19 @@
/* Define to the number of bits in type 'wint_t'. */
#undef BITSIZEOF_WINT_T
/* Define to 1 if chown fails to change ctime when at least one argument was
not -1. */
#undef CHOWN_CHANGE_TIME_BUG
/* Define if chown is not POSIX compliant regarding IDs of -1. */
#undef CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE
/* Define if chown modifies symlinks. */
#undef CHOWN_MODIFIES_SYMLINK
/* Define to 1 if chown mishandles trailing slash. */
#undef CHOWN_TRAILING_SLASH_BUG
/* Define to 1 if using 'alloca.c'. */
#undef C_ALLOCA
@@ -140,6 +153,9 @@
/* Define to 1 when the gnulib module chdir should be tested. */
#undef GNULIB_TEST_CHDIR
/* Define to 1 when the gnulib module chown should be tested. */
#undef GNULIB_TEST_CHOWN
/* Define to 1 when the gnulib module cloexec should be tested. */
#undef GNULIB_TEST_CLOEXEC
@@ -355,6 +371,9 @@
/* Define to 1 if you have the `catgets' function. */
#undef HAVE_CATGETS
/* Define to 1 if you have the `chown' function. */
#undef HAVE_CHOWN
/* Define to 1 if you have the `clock_gettime' function. */
#undef HAVE_CLOCK_GETTIME
@@ -521,6 +540,9 @@
/* Define to 1 if you have the `fchdir' function. */
#undef HAVE_FCHDIR
/* Define to 1 if you have the `fchown' function. */
#undef HAVE_FCHOWN
/* Define to 1 if you have the `fcntl' function. */
#undef HAVE_FCNTL

488
gnulib/configure vendored
View File

@@ -3725,6 +3725,8 @@ as_fn_append ac_func_list " faccessat"
as_fn_append ac_func_list " realpath"
as_fn_append ac_header_list " sys/param.h"
as_fn_append ac_header_list " unistd.h"
as_fn_append ac_func_list " chown"
as_fn_append ac_func_list " fchown"
as_fn_append ac_func_list " _set_invalid_parameter_handler"
as_fn_append ac_func_list " fchdir"
as_fn_append ac_header_list " dirent.h"
@@ -6685,6 +6687,7 @@ fi
# Code from module canonicalize-lgpl:
# Code from module chdir:
# Code from module chdir-long:
# Code from module chown:
# Code from module clock-time:
# Code from module cloexec:
# Code from module close:
@@ -8281,50 +8284,35 @@ done
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
if ${ac_cv_type_uid_t+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/types.h>
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
$EGREP "uid_t" >/dev/null 2>&1; then :
ac_cv_type_uid_t=yes
else
ac_cv_type_uid_t=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
$as_echo "$ac_cv_type_uid_t" >&6; }
if test $ac_cv_type_uid_t = no; then
$as_echo "#define uid_t int" >>confdefs.h
$as_echo "#define gid_t int" >>confdefs.h
if test $ac_cv_func__set_invalid_parameter_handler = yes; then
HAVE_MSVC_INVALID_PARAMETER_HANDLER=1
$as_echo "#define HAVE_MSVC_INVALID_PARAMETER_HANDLER 1" >>confdefs.h
else
HAVE_MSVC_INVALID_PARAMETER_HANDLER=0
fi
GNULIB_OPENDIR=0;
GNULIB_READDIR=0;
GNULIB_REWINDDIR=0;
GNULIB_CLOSEDIR=0;
GNULIB_DIRFD=0;
GNULIB_FDOPENDIR=0;
GNULIB_SCANDIR=0;
GNULIB_ALPHASORT=0;
HAVE_OPENDIR=1;
HAVE_READDIR=1;
HAVE_REWINDDIR=1;
HAVE_CLOSEDIR=1;
HAVE_DECL_DIRFD=1;
HAVE_DECL_FDOPENDIR=1;
HAVE_FDOPENDIR=1;
HAVE_SCANDIR=1;
HAVE_ALPHASORT=1;
REPLACE_OPENDIR=0;
REPLACE_CLOSEDIR=0;
REPLACE_DIRFD=0;
REPLACE_FDOPENDIR=0;
GNULIB_ISBLANK=0;
HAVE_ISBLANK=1;
fi
gl_mda_defines='
#if defined _WIN32 && !defined __CYGWIN__
@@ -8382,6 +8370,354 @@ gl_mda_defines='
'
for ac_header in unistd.h
do :
ac_fn_c_check_header_mongrel "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"
if test "x$ac_cv_header_unistd_h" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_UNISTD_H 1
_ACEOF
fi
done
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working chown" >&5
$as_echo_n "checking for working chown... " >&6; }
if ${ac_cv_func_chown_works+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
case "$host_os" in # ((
# Guess yes on Linux systems.
linux-* | linux) ac_cv_func_chown_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu* | gnu*) ac_cv_func_chown_works="guessing yes" ;;
# Guess no on native Windows.
mingw*) ac_cv_func_chown_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) ac_cv_func_chown_works="$gl_cross_guess_normal" ;;
esac
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
$ac_includes_default
#include <fcntl.h>
$gl_mda_defines
int
main ()
{
char *f = "conftest.chown";
struct stat before, after;
if (creat (f, 0600) < 0)
return 1;
if (stat (f, &before) < 0)
return 1;
if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
return 1;
if (stat (f, &after) < 0)
return 1;
return ! (before.st_uid == after.st_uid && before.st_gid == after.st_gid);
;
return 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
ac_cv_func_chown_works=yes
else
ac_cv_func_chown_works=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
rm -f conftest.chown
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_chown_works" >&5
$as_echo "$ac_cv_func_chown_works" >&6; }
case "$ac_cv_func_chown_works" in
*yes)
$as_echo "#define HAVE_CHOWN 1" >>confdefs.h
;;
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether chown dereferences symlinks" >&5
$as_echo_n "checking whether chown dereferences symlinks... " >&6; }
if ${gl_cv_func_chown_follows_symlink+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
gl_cv_func_chown_follows_symlink="guessing yes"
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
$gl_mda_defines
int
main ()
{
int result = 0;
char const *dangling_symlink = "conftest.dangle";
unlink (dangling_symlink);
if (symlink ("conftest.no-such", dangling_symlink))
abort ();
/* Exit successfully on a conforming system,
i.e., where chown must fail with ENOENT. */
if (chown (dangling_symlink, getuid (), getgid ()) == 0)
result |= 1;
if (errno != ENOENT)
result |= 2;
return result;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
gl_cv_func_chown_follows_symlink=yes
else
gl_cv_func_chown_follows_symlink=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_chown_follows_symlink" >&5
$as_echo "$gl_cv_func_chown_follows_symlink" >&6; }
case "$gl_cv_func_chown_follows_symlink" in
*yes) ;;
*)
$as_echo "#define CHOWN_MODIFIES_SYMLINK 1" >>confdefs.h
;;
esac
if test $ac_cv_func_chown = no; then
HAVE_CHOWN=0
else
case "$gl_cv_func_chown_follows_symlink" in
*yes) ;;
*) REPLACE_CHOWN=1 ;;
esac
case "$ac_cv_func_chown_works" in
*no)
$as_echo "#define CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE 1" >>confdefs.h
REPLACE_CHOWN=1
;;
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether chown honors trailing slash" >&5
$as_echo_n "checking whether chown honors trailing slash... " >&6; }
if ${gl_cv_func_chown_slash_works+:} false; then :
$as_echo_n "(cached) " >&6
else
touch conftest.file && rm -f conftest.link
if test "$cross_compiling" = yes; then :
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_chown_slash_works="guessing yes" ;;
# Guess yes on musl systems.
*-musl*) gl_cv_func_chown_slash_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_chown_slash_works="$gl_cross_guess_normal" ;;
esac
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
$gl_mda_defines
int
main ()
{
if (symlink ("conftest.file", "conftest.link")) return 1;
if (chown ("conftest.link/", getuid (), getgid ()) == 0) return 2;
;
return 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
gl_cv_func_chown_slash_works=yes
else
gl_cv_func_chown_slash_works=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
rm -f conftest.link conftest.file
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_chown_slash_works" >&5
$as_echo "$gl_cv_func_chown_slash_works" >&6; }
case "$gl_cv_func_chown_slash_works" in
*yes) ;;
*)
$as_echo "#define CHOWN_TRAILING_SLASH_BUG 1" >>confdefs.h
REPLACE_CHOWN=1
;;
esac
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether chown always updates ctime" >&5
$as_echo_n "checking whether chown always updates ctime... " >&6; }
if ${gl_cv_func_chown_ctime_works+:} false; then :
$as_echo_n "(cached) " >&6
else
if test "$cross_compiling" = yes; then :
case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_chown_ctime_works="guessing yes" ;;
# Guess yes on musl systems.
*-musl*) gl_cv_func_chown_ctime_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_chown_ctime_works="$gl_cross_guess_normal" ;;
esac
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
$gl_mda_defines
int
main ()
{
struct stat st1, st2;
if (close (creat ("conftest.file", 0600))) return 1;
if (stat ("conftest.file", &st1)) return 2;
sleep (1);
if (chown ("conftest.file", st1.st_uid, st1.st_gid)) return 3;
if (stat ("conftest.file", &st2)) return 4;
if (st2.st_ctime <= st1.st_ctime) return 5;
;
return 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
gl_cv_func_chown_ctime_works=yes
else
gl_cv_func_chown_ctime_works=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
conftest.$ac_objext conftest.beam conftest.$ac_ext
fi
rm -f conftest.file
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_func_chown_ctime_works" >&5
$as_echo "$gl_cv_func_chown_ctime_works" >&6; }
case "$gl_cv_func_chown_ctime_works" in
*yes) ;;
*)
$as_echo "#define CHOWN_CHANGE_TIME_BUG 1" >>confdefs.h
REPLACE_CHOWN=1
;;
esac
fi
if test $ac_cv_func__set_invalid_parameter_handler = yes; then
HAVE_MSVC_INVALID_PARAMETER_HANDLER=1
$as_echo "#define HAVE_MSVC_INVALID_PARAMETER_HANDLER 1" >>confdefs.h
else
HAVE_MSVC_INVALID_PARAMETER_HANDLER=0
fi
GNULIB_OPENDIR=0;
GNULIB_READDIR=0;
GNULIB_REWINDDIR=0;
GNULIB_CLOSEDIR=0;
GNULIB_DIRFD=0;
GNULIB_FDOPENDIR=0;
GNULIB_SCANDIR=0;
GNULIB_ALPHASORT=0;
HAVE_OPENDIR=1;
HAVE_READDIR=1;
HAVE_REWINDDIR=1;
HAVE_CLOSEDIR=1;
HAVE_DECL_DIRFD=1;
HAVE_DECL_FDOPENDIR=1;
HAVE_FDOPENDIR=1;
HAVE_SCANDIR=1;
HAVE_ALPHASORT=1;
REPLACE_OPENDIR=0;
REPLACE_CLOSEDIR=0;
REPLACE_DIRFD=0;
REPLACE_FDOPENDIR=0;
GNULIB_ISBLANK=0;
HAVE_ISBLANK=1;
@@ -16208,36 +16544,6 @@ fi
HAVE_SIGSET_T=0
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
if ${ac_cv_type_uid_t+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <sys/types.h>
_ACEOF
if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
$EGREP "uid_t" >/dev/null 2>&1; then :
ac_cv_type_uid_t=yes
else
ac_cv_type_uid_t=no
fi
rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
$as_echo "$ac_cv_type_uid_t" >&6; }
if test $ac_cv_type_uid_t = no; then
$as_echo "#define uid_t int" >>confdefs.h
$as_echo "#define gid_t int" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdbool.h that conforms to C99" >&5
$as_echo_n "checking for stdbool.h that conforms to C99... " >&6; }
if ${ac_cv_header_stdbool_h+:} false; then :
@@ -17891,6 +18197,46 @@ $as_echo "$gl_cv_have_unlimited_file_name_length" >&6; }
:
fi
if test $HAVE_CHOWN = 0 || test $REPLACE_CHOWN = 1; then
gl_LIBOBJS="$gl_LIBOBJS chown.$ac_objext"
fi
if test $REPLACE_CHOWN = 1 && test $ac_cv_func_fchown = no; then
gl_LIBOBJS="$gl_LIBOBJS fchown-stub.$ac_objext"
fi
GNULIB_CHOWN=1
$as_echo "#define GNULIB_TEST_CHOWN 1" >>confdefs.h
# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.

10
gnulib/import/Makefile.am
View File

@@ -35,6 +35,7 @@
# --no-vc-files \
# alloca \
# canonicalize-lgpl \
# chown \
# count-one-bits \
# dirent \
# dirfd \
@@ -237,6 +238,15 @@ EXTRA_libgnu_a_SOURCES += chdir-long.c
## end gnulib module chdir-long
## begin gnulib module chown
EXTRA_DIST += chown.c fchown-stub.c
EXTRA_libgnu_a_SOURCES += chown.c fchown-stub.c
## end gnulib module chown
## begin gnulib module cloexec
libgnu_a_SOURCES += cloexec.c

31
gnulib/import/Makefile.in
View File

@@ -49,6 +49,7 @@
# --no-vc-files \
# alloca \
# canonicalize-lgpl \
# chown \
# count-one-bits \
# dirent \
# dirfd \
@@ -182,6 +183,7 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
$(top_srcdir)/import/m4/builtin-expect.m4 \
$(top_srcdir)/import/m4/canonicalize.m4 \
$(top_srcdir)/import/m4/chdir-long.m4 \
$(top_srcdir)/import/m4/chown.m4 \
$(top_srcdir)/import/m4/clock_time.m4 \
$(top_srcdir)/import/m4/close.m4 \
$(top_srcdir)/import/m4/closedir.m4 \
@@ -1787,12 +1789,12 @@ noinst_LTLIBRARIES =
# No GNU Make output.
EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h arpa_inet.in.h \
assure.h attribute.h basename-lgpl.h btowc.c \
canonicalize-lgpl.c chdir-long.c chdir-long.h cloexec.h \
close.c closedir.c dirent-private.h count-one-bits.h \
ctype.in.h dirent.in.h dirfd.c dirname.h dup.c dup2.c \
eloop-threshold.h errno.in.h error.c error.h exitfail.h \
fchdir.c fcntl.c fcntl.in.h fd-hook.h fdopendir.c ffs.c \
filename.h filenamecat.h flexmember.h float.c float.in.h \
canonicalize-lgpl.c chdir-long.c chdir-long.h chown.c \
fchown-stub.c cloexec.h close.c closedir.c dirent-private.h \
count-one-bits.h ctype.in.h dirent.in.h dirfd.c dirname.h \
dup.c dup2.c eloop-threshold.h errno.in.h error.c error.h \
exitfail.h fchdir.c fcntl.c fcntl.in.h fd-hook.h fdopendir.c \
ffs.c filename.h filenamecat.h flexmember.h float.c float.in.h \
itold.c fnmatch.c fnmatch_loop.c fnmatch.c fnmatch.in.h \
fpucw.h free.c frexp.c frexp.c frexpl.c fstat.c stat-w32.c \
stat-w32.h at-func.c fstatat.c \
@@ -1876,13 +1878,14 @@ libgnu_a_SOURCES = openat-priv.h openat-proc.c basename-lgpl.c \
libgnu_a_LIBADD = $(gl_LIBOBJS) @ALLOCA@
libgnu_a_DEPENDENCIES = $(gl_LIBOBJS) @ALLOCA@
EXTRA_libgnu_a_SOURCES = alloca.c btowc.c canonicalize-lgpl.c \
chdir-long.c close.c closedir.c dirfd.c dup.c dup2.c error.c \
fchdir.c fcntl.c fdopendir.c ffs.c float.c itold.c fnmatch.c \
fnmatch_loop.c fnmatch.c free.c frexp.c frexp.c frexpl.c \
fstat.c stat-w32.c at-func.c fstatat.c getcwd.c getcwd-lgpl.c \
getdelim.c getdtablesize.c getline.c getlogin_r.c getrandom.c \
gettimeofday.c glob.c glob_pattern_p.c globfree.c inet_ntop.c \
isblank.c isnan.c isnand.c isnan.c isnanl.c lstat.c malloc.c \
chdir-long.c chown.c fchown-stub.c close.c closedir.c dirfd.c \
dup.c dup2.c error.c fchdir.c fcntl.c fdopendir.c ffs.c \
float.c itold.c fnmatch.c fnmatch_loop.c fnmatch.c free.c \
frexp.c frexp.c frexpl.c fstat.c stat-w32.c at-func.c \
fstatat.c getcwd.c getcwd-lgpl.c getdelim.c getdtablesize.c \
getline.c getlogin_r.c getrandom.c gettimeofday.c glob.c \
glob_pattern_p.c globfree.c inet_ntop.c isblank.c isnan.c \
isnand.c isnan.c isnanl.c lstat.c malloc.c \
lc-charset-dispatch.c mbrtowc.c mbtowc-lock.c mbsinit.c \
mbsrtowcs-state.c mbsrtowcs.c mbtowc.c memchr.c memmem.c \
memmem.c mempcpy.c memrchr.c mkdir.c mkdtemp.c mkostemp.c \
@@ -2010,6 +2013,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/btowc.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/canonicalize-lgpl.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/chdir-long.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/chown.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cloexec.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/close.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/closedir.Po@am__quote@
@@ -2023,6 +2027,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/error.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exitfail.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fchdir.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fchown-stub.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fcntl.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fd-hook.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fd-safer-flag.Po@am__quote@

151
gnulib/import/chown.c Normal file
View File

@@ -0,0 +1,151 @@
/* provide consistent interface to chown for systems that don't interpret
an ID of -1 as meaning "don't change the corresponding ID".
Copyright (C) 1997, 2004-2007, 2009-2021 Free Software Foundation, Inc.
This program 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.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Jim Meyering */
#include <config.h>
/* Specification. */
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <string.h>
#include <sys/stat.h>
#if !HAVE_CHOWN
/* Simple stub that always fails with ENOSYS, for mingw. */
int
chown (const char *file _GL_UNUSED, uid_t uid _GL_UNUSED,
gid_t gid _GL_UNUSED)
{
errno = ENOSYS;
return -1;
}
#else /* HAVE_CHOWN */
/* Below we refer to the system's chown(). */
# undef chown
/* Provide a more-closely POSIX-conforming version of chown on
systems with one or both of the following problems:
- chown doesn't treat an ID of -1 as meaning
"don't change the corresponding ID".
- chown doesn't dereference symlinks. */
int
rpl_chown (const char *file, uid_t uid, gid_t gid)
{
struct stat st;
bool stat_valid = false;
int result;
# if CHOWN_CHANGE_TIME_BUG
if (gid != (gid_t) -1 || uid != (uid_t) -1)
{
if (stat (file, &st))
return -1;
stat_valid = true;
}
# endif
# if CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE
if (gid == (gid_t) -1 || uid == (uid_t) -1)
{
/* Stat file to get id(s) that should remain unchanged. */
if (!stat_valid && stat (file, &st))
return -1;
if (gid == (gid_t) -1)
gid = st.st_gid;
if (uid == (uid_t) -1)
uid = st.st_uid;
}
# endif
# if CHOWN_MODIFIES_SYMLINK
{
/* Handle the case in which the system-supplied chown function
does *not* follow symlinks. Instead, it changes permissions
on the symlink itself. To work around that, we open the
file (but this can fail due to lack of read or write permission) and
use fchown on the resulting descriptor. */
int open_flags = O_NONBLOCK | O_NOCTTY | O_CLOEXEC;
int fd = open (file, O_RDONLY | open_flags);
if (0 <= fd
|| (errno == EACCES
&& 0 <= (fd = open (file, O_WRONLY | open_flags))))
{
int saved_errno;
bool fchown_socket_failure;
result = fchown (fd, uid, gid);
saved_errno = errno;
/* POSIX says fchown can fail with errno == EINVAL on sockets
and pipes, so fall back on chown in that case. */
fchown_socket_failure =
(result != 0 && saved_errno == EINVAL
&& fstat (fd, &st) == 0
&& (S_ISFIFO (st.st_mode) || S_ISSOCK (st.st_mode)));
close (fd);
if (! fchown_socket_failure)
{
errno = saved_errno;
return result;
}
}
else if (errno != EACCES)
return -1;
}
# endif
# if CHOWN_TRAILING_SLASH_BUG
if (!stat_valid)
{
size_t len = strlen (file);
if (len && file[len - 1] == '/' && stat (file, &st))
return -1;
}
# endif
result = chown (file, uid, gid);
# if CHOWN_CHANGE_TIME_BUG
if (result == 0 && stat_valid
&& (uid == st.st_uid || uid == (uid_t) -1)
&& (gid == st.st_gid || gid == (gid_t) -1))
{
/* No change in ownership, but at least one argument was not -1,
so we are required to update ctime. Since chown succeeded,
we assume that chmod will do likewise. Fortunately, on all
known systems where a 'no-op' chown skips the ctime update, a
'no-op' chmod still does the trick. */
result = chmod (file, st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO
| S_ISUID | S_ISGID | S_ISVTX));
}
# endif
return result;
}
#endif /* HAVE_CHOWN */

34
gnulib/import/fchown-stub.c Normal file
View File

@@ -0,0 +1,34 @@
/* Change ownership of a file.
Copyright (C) 2004-2021 Free Software Foundation, Inc.
This program 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.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert, 2004. */
#include <config.h>
#include <sys/types.h>
#include <errno.h>
/* A trivial substitute for 'fchown'.
DJGPP 2.03 and earlier (and perhaps later) don't have 'fchown',
so we pretend no-one has permission for this operation. */
int
fchown (int fd, uid_t uid, gid_t gid)
{
errno = EPERM;
return -1;
}

218
gnulib/import/m4/chown.m4 Normal file
View File

@@ -0,0 +1,218 @@
# serial 35
# Determine whether we need the chown wrapper.
dnl Copyright (C) 1997-2001, 2003-2005, 2007, 2009-2021 Free Software
dnl 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.
# chown should accept arguments of -1 for uid and gid, and it should
# dereference symlinks. If it doesn't, arrange to use the replacement
# function.
# From Jim Meyering.
# This is taken from the following Autoconf patch:
# https://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=7fbb553727ed7e0e689a17594b58559ecf3ea6e9
AC_DEFUN([AC_FUNC_CHOWN],
[
AC_REQUIRE([AC_TYPE_UID_T])dnl
AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles
AC_CHECK_HEADERS([unistd.h])
AC_CACHE_CHECK([for working chown],
[ac_cv_func_chown_works],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[AC_INCLUDES_DEFAULT
[#include <fcntl.h>
]GL_MDA_DEFINES],
[[
char *f = "conftest.chown";
struct stat before, after;
if (creat (f, 0600) < 0)
return 1;
if (stat (f, &before) < 0)
return 1;
if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
return 1;
if (stat (f, &after) < 0)
return 1;
return ! (before.st_uid == after.st_uid && before.st_gid == after.st_gid);
]])
],
[ac_cv_func_chown_works=yes],
[ac_cv_func_chown_works=no],
[case "$host_os" in # ((
# Guess yes on Linux systems.
linux-* | linux) ac_cv_func_chown_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu* | gnu*) ac_cv_func_chown_works="guessing yes" ;;
# Guess no on native Windows.
mingw*) ac_cv_func_chown_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) ac_cv_func_chown_works="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.chown
])
case "$ac_cv_func_chown_works" in
*yes)
AC_DEFINE([HAVE_CHOWN], [1],
[Define to 1 if your system has a working `chown' function.])
;;
esac
])# AC_FUNC_CHOWN
AC_DEFUN_ONCE([gl_FUNC_CHOWN],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([AC_TYPE_UID_T])
AC_REQUIRE([AC_FUNC_CHOWN])
AC_REQUIRE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CHECK_FUNCS_ONCE([chown fchown])
dnl mingw lacks chown altogether.
if test $ac_cv_func_chown = no; then
HAVE_CHOWN=0
else
dnl Some old systems treated chown like lchown.
case "$gl_cv_func_chown_follows_symlink" in
*yes) ;;
*) REPLACE_CHOWN=1 ;;
esac
dnl Some old systems tried to use uid/gid -1 literally.
case "$ac_cv_func_chown_works" in
*no)
AC_DEFINE([CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE], [1],
[Define if chown is not POSIX compliant regarding IDs of -1.])
REPLACE_CHOWN=1
;;
esac
dnl Solaris 9 ignores trailing slash.
dnl FreeBSD 7.2 mishandles trailing slash on symlinks.
dnl Likewise for AIX 7.1.
AC_CACHE_CHECK([whether chown honors trailing slash],
[gl_cv_func_chown_slash_works],
[touch conftest.file && rm -f conftest.link
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
]GL_MDA_DEFINES],
[[if (symlink ("conftest.file", "conftest.link")) return 1;
if (chown ("conftest.link/", getuid (), getgid ()) == 0) return 2;
]])],
[gl_cv_func_chown_slash_works=yes],
[gl_cv_func_chown_slash_works=no],
[case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_chown_slash_works="guessing yes" ;;
# Guess yes on musl systems.
*-musl*) gl_cv_func_chown_slash_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_chown_slash_works="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.link conftest.file])
case "$gl_cv_func_chown_slash_works" in
*yes) ;;
*)
AC_DEFINE([CHOWN_TRAILING_SLASH_BUG], [1],
[Define to 1 if chown mishandles trailing slash.])
REPLACE_CHOWN=1
;;
esac
dnl OpenBSD fails to update ctime if ownership does not change.
AC_CACHE_CHECK([whether chown always updates ctime],
[gl_cv_func_chown_ctime_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
]GL_MDA_DEFINES],
[[struct stat st1, st2;
if (close (creat ("conftest.file", 0600))) return 1;
if (stat ("conftest.file", &st1)) return 2;
sleep (1);
if (chown ("conftest.file", st1.st_uid, st1.st_gid)) return 3;
if (stat ("conftest.file", &st2)) return 4;
if (st2.st_ctime <= st1.st_ctime) return 5;
]])],
[gl_cv_func_chown_ctime_works=yes],
[gl_cv_func_chown_ctime_works=no],
[case "$host_os" in
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_chown_ctime_works="guessing yes" ;;
# Guess yes on musl systems.
*-musl*) gl_cv_func_chown_ctime_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_chown_ctime_works="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.file])
case "$gl_cv_func_chown_ctime_works" in
*yes) ;;
*)
AC_DEFINE([CHOWN_CHANGE_TIME_BUG], [1], [Define to 1 if chown fails
to change ctime when at least one argument was not -1.])
REPLACE_CHOWN=1
;;
esac
fi
])
# Determine whether chown follows symlinks (it should).
AC_DEFUN_ONCE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK],
[
AC_CACHE_CHECK(
[whether chown dereferences symlinks],
[gl_cv_func_chown_follows_symlink],
[
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
]GL_MDA_DEFINES[
int
main ()
{
int result = 0;
char const *dangling_symlink = "conftest.dangle";
unlink (dangling_symlink);
if (symlink ("conftest.no-such", dangling_symlink))
abort ();
/* Exit successfully on a conforming system,
i.e., where chown must fail with ENOENT. */
if (chown (dangling_symlink, getuid (), getgid ()) == 0)
result |= 1;
if (errno != ENOENT)
result |= 2;
return result;
}
]])],
[gl_cv_func_chown_follows_symlink=yes],
[gl_cv_func_chown_follows_symlink=no],
[gl_cv_func_chown_follows_symlink="guessing yes"]
)
]
)
case "$gl_cv_func_chown_follows_symlink" in
*yes) ;;
*)
AC_DEFINE([CHOWN_MODIFIES_SYMLINK], [1],
[Define if chown modifies symlinks.])
;;
esac
])

2
gnulib/import/m4/gnulib-cache.m4
View File

@@ -40,6 +40,7 @@
# --no-vc-files \
# alloca \
# canonicalize-lgpl \
# chown \
# count-one-bits \
# dirent \
# dirfd \
@@ -85,6 +86,7 @@ gl_LOCAL_DIR([])
gl_MODULES([
alloca
canonicalize-lgpl
chown
count-one-bits
dirent
dirfd

12
gnulib/import/m4/gnulib-comp.m4
View File

@@ -57,6 +57,7 @@ AC_DEFUN([gl_EARLY],
# Code from module canonicalize-lgpl:
# Code from module chdir:
# Code from module chdir-long:
# Code from module chown:
# Code from module clock-time:
# Code from module cloexec:
# Code from module close:
@@ -268,6 +269,14 @@ AC_DEFUN([gl_INIT],
AC_LIBOBJ([chdir-long])
gl_PREREQ_CHDIR_LONG
fi
gl_FUNC_CHOWN
if test $HAVE_CHOWN = 0 || test $REPLACE_CHOWN = 1; then
AC_LIBOBJ([chown])
fi
if test $REPLACE_CHOWN = 1 && test $ac_cv_func_fchown = no; then
AC_LIBOBJ([fchown-stub])
fi
gl_UNISTD_MODULE_INDICATOR([chown])
gl_CLOCK_TIME
gl_MODULE_INDICATOR_FOR_TESTS([cloexec])
gl_FUNC_CLOSE
@@ -968,6 +977,7 @@ AC_DEFUN([gl_FILE_LIST], [
lib/cdefs.h
lib/chdir-long.c
lib/chdir-long.h
lib/chown.c
lib/cloexec.c
lib/cloexec.h
lib/close.c
@@ -991,6 +1001,7 @@ AC_DEFUN([gl_FILE_LIST], [
lib/exitfail.c
lib/exitfail.h
lib/fchdir.c
lib/fchown-stub.c
lib/fcntl.c
lib/fcntl.in.h
lib/fd-hook.c
@@ -1189,6 +1200,7 @@ AC_DEFUN([gl_FILE_LIST], [
m4/builtin-expect.m4
m4/canonicalize.m4
m4/chdir-long.m4
m4/chown.m4
m4/clock_time.m4
m4/close.m4
m4/closedir.m4

1
gnulib/update-gnulib.sh
View File

@@ -32,6 +32,7 @@
IMPORTED_GNULIB_MODULES="\
alloca \
canonicalize-lgpl \
chown \
count-one-bits \
dirent \
dirfd \