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50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
#serial 5
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dnl From Jim Meyering.
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dnl Determine whether chown accepts arguments of -1 for uid and gid.
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dnl If it doesn't, arrange to use the replacement function.
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dnl
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AC_DEFUN(jm_FUNC_CHOWN,
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[AC_REQUIRE([AC_TYPE_UID_T])dnl
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test -z "$ac_cv_header_unistd_h" \
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&& AC_CHECK_HEADERS(unistd.h)
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AC_CACHE_CHECK([for working chown], jm_cv_func_working_chown,
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[AC_TRY_RUN([
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <fcntl.h>
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# ifdef HAVE_UNISTD_H
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# include <unistd.h>
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# endif
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int
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main ()
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{
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char *f = "conftestchown";
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struct stat before, after;
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if (creat (f, 0600) < 0)
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exit (1);
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if (stat (f, &before) < 0)
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exit (1);
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if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
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exit (1);
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if (stat (f, &after) < 0)
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exit (1);
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exit ((before.st_uid == after.st_uid
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&& before.st_gid == after.st_gid) ? 0 : 1);
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}
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],
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jm_cv_func_working_chown=yes,
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jm_cv_func_working_chown=no,
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dnl When crosscompiling, assume chown is broken.
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jm_cv_func_working_chown=no)
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])
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if test $jm_cv_func_working_chown = no; then
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AC_LIBOBJ(chown)
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AC_DEFINE_UNQUOTED(chown, rpl_chown,
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[Define to rpl_chown if the replacement function should be used.])
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fi
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])
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