Consolidate non cancellable open call

This patch consolidates all the non cancellable open calls to use
the __open_nocancel identifier.  For non cancellable targets it will
be just a macro to call the default respective symbol while on Linux
will be a internal one.

To be consistent with the following non cancellable openat call, a
new __open64_nocancel is also added (although not currently used).

Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu.

	* sysdeps/generic/not-cancel.h (open_not_cancel): Remove macro.
	(open_not_cancel_2): Likewise.
	(open_nocancel): New macro.
	(open64_nocancel): Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h (open_not_cancel): Remove macro.
	(open_not_cancel_2): Likewise.
	(__open_nocancel): New prototype.
	(__open64_nocancel): Likewise.
	* sysdeps/unix/sysv/linux/Versions (libc) [GLIBC_PRIVATE]: Add
	__open_nocancel.
	* sysdeps/unix/sysv/linux/open.c (__open_nocancel): New function.
	* sysdeps/unix/sysv/linux/open64.c (__open64_nocancel): Likewise.
	* catgets/open_catalog.c (__open_catalog): Replace open_not_cancel{_2}
	with __open_nocancel.
	* csu/check_fds.c (check_one_fd): Likewise.
	* gmon/gmon.c (write_gmon): Likewise.
	* iconv/gconv_cache.c (__gconv_load_cached): Likewise.
	* intl/loadmsgcat.c (open): Likewise.
	* libio/fileops.c (_IO_file_open): Likewise.
	* locale/loadarchive.c (_nl_load_locale_from_archive): Likewise.
	* locale/loadlocale.c (_nl_load_locale): Likewise.
	* login/utmp_file.c (setutent_file): Likewise.
	* misc/daemon.c (daemon): Likewise.
	* nss/nss_db/db-open.c (internal_setent): Likewise.
	* sysdeps/mach/hurd/opendir.c (__opendirat): Likewise.
	* sysdeps/posix/libc_fatal.c (__libc_message): Likewise.
	* sysdeps/posix/opendir.c (tryopen_o_directory): Likewise.
	(__opendir): Likewise.
	* sysdeps/posix/spawni.c (__spawni_child): Likewise.
	* sysdeps/unix/sysv/linux/fips-private.h (fips_enable_p): Likewise.
	* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Likewise.
	(gethostid): Likewise.
	* sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Likewise.
	* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
	Likewise.
	* sysdeps/unix/sysv/linux/getsysstats.c (__get_nprocs): Likewise.
	* sysdeps/unix/sysv/linux/grantpt.c (__close_all_fds): Likewise.
	* sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): Likewise.
	* sysdeps/unix/sysv/linux/ia64/has_cpuclock.c (has_cpuclock):
	Likewise.
	* sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps):
	Likewise.
	* sysdeps/unix/sysv/linux/malloc-sysdep.h (check_may_shrink_heap):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c (__get_clockfreq):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
	Likewise.
	* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise.
	* sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Likewise.

36 files changed, 164 insertions, 65 deletions

diff --git a/ChangeLog b/ChangeLog
index 08207b1..0c8183c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,58 @@
+2017-08-17  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* sysdeps/generic/not-cancel.h (open_not_cancel): Remove macro.
+	(open_not_cancel_2): Likewise.
+	(open_nocancel): New macro.
+	(open64_nocancel): Likewise.
+	* sysdeps/unix/sysv/linux/not-cancel.h (open_not_cancel): Remove macro.
+	(open_not_cancel_2): Likewise.
+	(__open_nocancel): New prototype.
+	(__open64_nocancel): Likewise.
+	* sysdeps/unix/sysv/linux/Versions (libc) [GLIBC_PRIVATE]: Add
+	__open_nocancel.
+	* sysdeps/unix/sysv/linux/open.c (__open_nocancel): New function.
+	* sysdeps/unix/sysv/linux/open64.c (__open64_nocancel): Likewise.
+	* catgets/open_catalog.c (__open_catalog): Replace open_not_cancel{_2}
+	with __open_nocancel.
+	* csu/check_fds.c (check_one_fd): Likewise.
+	* gmon/gmon.c (write_gmon): Likewise.
+	* iconv/gconv_cache.c (__gconv_load_cached): Likewise.
+	* intl/loadmsgcat.c (open): Likewise.
+	* libio/fileops.c (_IO_file_open): Likewise.
+	* locale/loadarchive.c (_nl_load_locale_from_archive): Likewise.
+	* locale/loadlocale.c (_nl_load_locale): Likewise.
+	* login/utmp_file.c (setutent_file): Likewise.
+	* misc/daemon.c (daemon): Likewise.
+	* nss/nss_db/db-open.c (internal_setent): Likewise.
+	* sysdeps/mach/hurd/opendir.c (__opendirat): Likewise.
+	* sysdeps/posix/libc_fatal.c (__libc_message): Likewise.
+	* sysdeps/posix/opendir.c (tryopen_o_directory): Likewise.
+	(__opendir): Likewise.
+	* sysdeps/posix/spawni.c (__spawni_child): Likewise.
+	* sysdeps/unix/sysv/linux/fips-private.h (fips_enable_p): Likewise.
+	* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Likewise.
+	(gethostid): Likewise.
+	* sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Likewise.
+	* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
+	Likewise.
+	* sysdeps/unix/sysv/linux/getsysstats.c (__get_nprocs): Likewise.
+	* sysdeps/unix/sysv/linux/grantpt.c (__close_all_fds): Likewise.
+	* sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): Likewise.
+	* sysdeps/unix/sysv/linux/ia64/has_cpuclock.c (has_cpuclock):
+	Likewise.
+	* sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps):
+	Likewise.
+	* sysdeps/unix/sysv/linux/malloc-sysdep.h (check_may_shrink_heap):
+	Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c (__get_clockfreq):
+	Likewise.
+	* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
+	Likewise.
+	* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
+	Likewise.
+	* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise.
+	* sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Likewise.
+
 2017-08-17  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* benchtests/bench-skeleton.c (main): Add support for
diff --git a/catgets/open_catalog.c b/catgets/open_catalog.c
index cbb305a..4621b26 100644
--- a/catgets/open_catalog.c
+++ b/catgets/open_catalog.c
@@ -50,7 +50,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
   char *buf = NULL;
 
   if (strchr (cat_name, '/') != NULL || nlspath == NULL)
-    fd = open_not_cancel_2 (cat_name, O_RDONLY);
+    fd = __open_nocancel (cat_name, O_RDONLY);
   else
     {
       const char *run_nlspath = nlspath;
@@ -178,7 +178,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
 
 	  if (bufact != 0)
 	    {
-	      fd = open_not_cancel_2 (buf, O_RDONLY);
+	      fd = __open_nocancel (buf, O_RDONLY);
 	      if (fd >= 0)
 		break;
 	    }
diff --git a/csu/check_fds.c b/csu/check_fds.c
index 062c879..5bd6392 100644
--- a/csu/check_fds.c
+++ b/csu/check_fds.c
@@ -61,7 +61,7 @@ check_one_fd (int fd, int mode)
       /* Something is wrong with this descriptor, it's probably not
 	 opened.  Open /dev/null so that the SUID program we are
 	 about to start does not accidentally use this descriptor.  */
-      int nullfd = open_not_cancel (name, mode, 0);
+      int nullfd = __open_nocancel (name, mode, 0);
 
       /* We are very paranoid here.  With all means we try to ensure
 	 that we are actually opening the /dev/null device and nothing
diff --git a/gmon/gmon.c b/gmon/gmon.c
index f394a78..87c3c4e 100644
--- a/gmon/gmon.c
+++ b/gmon/gmon.c
@@ -342,12 +342,12 @@ write_gmon (void)
 	size_t len = strlen (env);
 	char buf[len + 20];
 	__snprintf (buf, sizeof (buf), "%s.%u", env, __getpid ());
-	fd = open_not_cancel (buf, O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW, 0666);
+	fd = __open_nocancel (buf, O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW, 0666);
       }
 
     if (fd == -1)
       {
-	fd = open_not_cancel ("gmon.out", O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW,
+	fd = __open_nocancel ("gmon.out", O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW,
 			      0666);
 	if (fd < 0)
 	  {
diff --git a/iconv/gconv_cache.c b/iconv/gconv_cache.c
index 0cadea3..f1dce29 100644
--- a/iconv/gconv_cache.c
+++ b/iconv/gconv_cache.c
@@ -59,7 +59,7 @@ __gconv_load_cache (void)
     return -1;
 
   /* See whether the cache file exists.  */
-  fd = open_not_cancel (GCONV_MODULES_CACHE, O_RDONLY, 0);
+  fd = __open_nocancel (GCONV_MODULES_CACHE, O_RDONLY, 0);
   if (__builtin_expect (fd, 0) == -1)
     /* Not available.  */
     return -1;
diff --git a/intl/loadmsgcat.c b/intl/loadmsgcat.c
index c2ff64e..adca419 100644
--- a/intl/loadmsgcat.c
+++ b/intl/loadmsgcat.c
@@ -445,7 +445,7 @@
 /* Rename the non ISO C functions.  This is required by the standard
    because some ISO C functions will require linking with this object
    file and the name space must not be polluted.  */
-# define open(name, flags)	open_not_cancel_2 (name, flags)
+# define open(name, flags)	__open_nocancel (name, flags)
 # define close(fd)		close_not_cancel_no_status (fd)
 # define read(fd, buf, n)	read_not_cancel (fd, buf, n)
 # define mmap(addr, len, prot, flags, fd, offset) \
diff --git a/libio/fileops.c b/libio/fileops.c
index c55e196..67f3d72 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -223,7 +223,7 @@ _IO_file_open (_IO_FILE *fp, const char *filename, int posix_mode, int prot,
   int fdesc;
 #ifdef _LIBC
   if (__glibc_unlikely (fp->_flags2 & _IO_FLAGS2_NOTCANCEL))
-    fdesc = open_not_cancel (filename,
+    fdesc = __open_nocancel (filename,
 			     posix_mode | (is32not64 ? 0 : O_LARGEFILE), prot);
   else
     fdesc = open (filename, posix_mode | (is32not64 ? 0 : O_LARGEFILE), prot);
diff --git a/locale/loadarchive.c b/locale/loadarchive.c
index e6e1a05..7825a1c 100644
--- a/locale/loadarchive.c
+++ b/locale/loadarchive.c
@@ -203,7 +203,7 @@ _nl_load_locale_from_archive (int category, const char **namep)
       archmapped = &headmap;
 
       /* The archive has never been opened.  */
-      fd = open_not_cancel_2 (archfname, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
+      fd = __open_nocancel (archfname, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
       if (fd < 0)
 	/* Cannot open the archive, for whatever reason.  */
 	return NULL;
@@ -398,8 +398,8 @@ _nl_load_locale_from_archive (int category, const char **namep)
 	  if (fd == -1)
 	    {
 	      struct stat64 st;
-	      fd = open_not_cancel_2 (archfname,
-				      O_RDONLY|O_LARGEFILE|O_CLOEXEC);
+	      fd = __open_nocancel (archfname,
+				    O_RDONLY|O_LARGEFILE|O_CLOEXEC);
 	      if (fd == -1)
 		/* Cannot open the archive, for whatever reason.  */
 		return NULL;
diff --git a/locale/loadlocale.c b/locale/loadlocale.c
index 162dd1a..7416bc30 100644
--- a/locale/loadlocale.c
+++ b/locale/loadlocale.c
@@ -173,7 +173,7 @@ _nl_load_locale (struct loaded_l10nfile *file, int category)
   file->decided = 1;
   file->data = NULL;
 
-  fd = open_not_cancel_2 (file->filename, O_RDONLY | O_CLOEXEC);
+  fd = __open_nocancel (file->filename, O_RDONLY | O_CLOEXEC);
   if (__builtin_expect (fd, 0) < 0)
     /* Cannot open the file.  */
     return;
@@ -201,7 +201,7 @@ _nl_load_locale (struct loaded_l10nfile *file, int category)
 		 _nl_category_names.str + _nl_category_name_idxs[category],
 		 _nl_category_name_sizes[category] + 1);
 
-      fd = open_not_cancel_2 (newp, O_RDONLY | O_CLOEXEC);
+      fd = __open_nocancel (newp, O_RDONLY | O_CLOEXEC);
       if (__builtin_expect (fd, 0) < 0)
 	return;
 
diff --git a/login/utmp_file.c b/login/utmp_file.c
index 240e0e3..1407116 100644
--- a/login/utmp_file.c
+++ b/login/utmp_file.c
@@ -143,7 +143,7 @@ setutent_file (void)
       file_name = TRANSFORM_UTMP_FILE_NAME (__libc_utmp_file_name);
 
       file_writable = false;
-      file_fd = open_not_cancel_2
+      file_fd = __open_nocancel
 	(file_name, O_RDONLY | O_LARGEFILE | O_CLOEXEC);
       if (file_fd == -1)
 	return 0;
@@ -374,7 +374,7 @@ pututline_file (const struct utmp *data)
       /* We must make the file descriptor writable before going on.  */
       const char *file_name = TRANSFORM_UTMP_FILE_NAME (__libc_utmp_file_name);
 
-      int new_fd = open_not_cancel_2
+      int new_fd = __open_nocancel
 	(file_name, O_RDWR | O_LARGEFILE | O_CLOEXEC);
       if (new_fd == -1)
 	return NULL;
@@ -484,7 +484,7 @@ updwtmp_file (const char *file, const struct utmp *utmp)
   int fd;
 
   /* Open WTMP file.  */
-  fd = open_not_cancel_2 (file, O_WRONLY | O_LARGEFILE);
+  fd = __open_nocancel (file, O_WRONLY | O_LARGEFILE);
   if (fd < 0)
     return -1;
 
diff --git a/misc/daemon.c b/misc/daemon.c
index 9d186b2..dd38f2b 100644
--- a/misc/daemon.c
+++ b/misc/daemon.c
@@ -63,7 +63,7 @@ daemon (int nochdir, int noclose)
 	if (!noclose) {
 		struct stat64 st;
 
-		if ((fd = open_not_cancel(_PATH_DEVNULL, O_RDWR, 0)) != -1
+		if ((fd = __open_nocancel(_PATH_DEVNULL, O_RDWR, 0)) != -1
 		    && (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0)
 			== 0)) {
 			if (__builtin_expect (S_ISCHR (st.st_mode), 1) != 0
diff --git a/nss/nss_db/db-open.c b/nss/nss_db/db-open.c
index 1c58bd1..40a2540 100644
--- a/nss/nss_db/db-open.c
+++ b/nss/nss_db/db-open.c
@@ -36,7 +36,7 @@ internal_setent (const char *file, struct nss_db_map *mapping)
 {
   enum nss_status status = NSS_STATUS_UNAVAIL;
 
-  int fd = open_not_cancel_2 (file, O_RDONLY | O_LARGEFILE | O_CLOEXEC);
+  int fd = __open_nocancel (file, O_RDONLY | O_LARGEFILE | O_CLOEXEC);
   if (fd != -1)
     {
       struct nss_db_header header;
diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h
index 5eabd2b..a4f7b7b 100644
--- a/sysdeps/generic/not-cancel.h
+++ b/sysdeps/generic/not-cancel.h
@@ -18,10 +18,10 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* By default we have none.  Map the name to the normal functions.  */
-#define open_not_cancel(name, flags, mode) \
-  __libc_open (name, flags, mode)
-#define open_not_cancel_2(name, flags) \
-  __libc_open (name, flags)
+#define __open_nocancel(...) \
+  __open (__VA_ARGS__)
+#define __open64_nocancel(...) \
+  __open64 (__VA_ARGS__)
 #define openat_not_cancel(fd, name, flags, mode) \
   __openat (fd, name, flags, mode)
 #define openat_not_cancel_3(fd, name, flags) \
diff --git a/sysdeps/mach/hurd/opendir.c b/sysdeps/mach/hurd/opendir.c
index b3dab24..8db70b2 100644
--- a/sysdeps/mach/hurd/opendir.c
+++ b/sysdeps/mach/hurd/opendir.c
@@ -84,7 +84,7 @@ __opendirat (int dfd, const char *name)
   int fd;
 #if IS_IN (rtld)
   assert (dfd == AT_FDCWD);
-  fd = open_not_cancel_2 (name, flags);
+  fd = __open_nocancel (name, flags);
 #else
   fd = openat_not_cancel_3 (dfd, name, flags);
 #endif
diff --git a/sysdeps/posix/libc_fatal.c b/sysdeps/posix/libc_fatal.c
index c918919..fbb1bec 100644
--- a/sysdeps/posix/libc_fatal.c
+++ b/sysdeps/posix/libc_fatal.c
@@ -83,7 +83,7 @@ __libc_message (enum __libc_message_action action, const char *fmt, ...)
 	 requests errors on standard error.  */
       const char *on_2 = __libc_secure_getenv ("LIBC_FATAL_STDERR_");
       if (on_2 == NULL || *on_2 == '\0')
-	fd = open_not_cancel_2 (_PATH_TTY, O_RDWR | O_NOCTTY | O_NDELAY);
+	fd = __open_nocancel (_PATH_TTY, O_RDWR | O_NOCTTY | O_NDELAY);
     }
 
   if (fd == -1)
diff --git a/sysdeps/posix/opendir.c b/sysdeps/posix/opendir.c
index 909aa61..3ee27b2 100644
--- a/sysdeps/posix/opendir.c
+++ b/sysdeps/posix/opendir.c
@@ -61,7 +61,7 @@ static void
 tryopen_o_directory (void)
 {
   int serrno = errno;
-  int x = open_not_cancel_2 ("/dev/null", O_RDONLY|O_NDELAY|O_DIRECTORY);
+  int x = __open_nocancel ("/dev/null", O_RDONLY|O_NDELAY|O_DIRECTORY);
 
   if (x >= 0)
     {
@@ -188,7 +188,7 @@ __opendir (const char *name)
 	}
     }
 
-  return opendir_tail (open_not_cancel_2 (name, opendir_oflags));
+  return opendir_tail (__open_nocancel (name, opendir_oflags));
 }
 weak_alias (__opendir, opendir)
 
diff --git a/sysdeps/posix/spawni.c b/sysdeps/posix/spawni.c
index 0b5ef08..823db11 100644
--- a/sysdeps/posix/spawni.c
+++ b/sysdeps/posix/spawni.c
@@ -182,7 +182,7 @@ __spawni_child (void *arguments)
 		   paths (like /dev/watchdog).  */
 		close_not_cancel (action->action.open_action.fd);
 
-		int new_fd = open_not_cancel (action->action.open_action.path,
+		int new_fd = __open_nocancel (action->action.open_action.path,
 					      action->action.open_action.oflag
 					      | O_LARGEFILE,
 					      action->action.open_action.mode);
diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 202ffcc..3c64077 100644
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -169,6 +169,7 @@ libc {
   GLIBC_PRIVATE {
     # functions used in other libraries
     __syscall_rt_sigqueueinfo;
+    __open_nocancel;
     # functions used by nscd
     __netlink_assert_response;
   }
diff --git a/sysdeps/unix/sysv/linux/fips-private.h b/sysdeps/unix/sysv/linux/fips-private.h
index c9fe266..3a83a0f 100644
--- a/sysdeps/unix/sysv/linux/fips-private.h
+++ b/sysdeps/unix/sysv/linux/fips-private.h
@@ -42,7 +42,7 @@ fips_enabled_p (void)
 
   if (checked == FIPS_UNTESTED)
     {
-      int fd = open_not_cancel_2 ("/proc/sys/crypto/fips_enabled", O_RDONLY);
+      int fd = __open_nocancel ("/proc/sys/crypto/fips_enabled", O_RDONLY);
 
       if (fd != -1)
 	{
diff --git a/sysdeps/unix/sysv/linux/gethostid.c b/sysdeps/unix/sysv/linux/gethostid.c
index cc108aa..3ea8656 100644
--- a/sysdeps/unix/sysv/linux/gethostid.c
+++ b/sysdeps/unix/sysv/linux/gethostid.c
@@ -47,7 +47,7 @@ sethostid (long int id)
     }
 
   /* Open file for writing.  Everybody is allowed to read this file.  */
-  fd = open_not_cancel (HOSTIDFILE, O_CREAT|O_WRONLY|O_TRUNC, 0644);
+  fd = __open_nocancel (HOSTIDFILE, O_CREAT|O_WRONLY|O_TRUNC, 0644);
   if (fd < 0)
     return -1;
 
@@ -77,7 +77,7 @@ gethostid (void)
   int fd;
 
   /* First try to get the ID from a former invocation of sethostid.  */
-  fd = open_not_cancel (HOSTIDFILE, O_RDONLY|O_LARGEFILE, 0);
+  fd = __open_nocancel (HOSTIDFILE, O_RDONLY|O_LARGEFILE, 0);
   if (fd >= 0)
     {
       ssize_t n = read_not_cancel (fd, &id, sizeof (id));
diff --git a/sysdeps/unix/sysv/linux/getloadavg.c b/sysdeps/unix/sysv/linux/getloadavg.c
index 117f8c2..0bfe41d 100644
--- a/sysdeps/unix/sysv/linux/getloadavg.c
+++ b/sysdeps/unix/sysv/linux/getloadavg.c
@@ -33,7 +33,7 @@ getloadavg (double loadavg[], int nelem)
 {
   int fd;
 
-  fd = open_not_cancel_2 ("/proc/loadavg", O_RDONLY);
+  fd = __open_nocancel ("/proc/loadavg", O_RDONLY);
   if (fd < 0)
     return -1;
   else
diff --git a/sysdeps/unix/sysv/linux/getlogin_r.c b/sysdeps/unix/sysv/linux/getlogin_r.c
index 05ac36b..2519792 100644
--- a/sysdeps/unix/sysv/linux/getlogin_r.c
+++ b/sysdeps/unix/sysv/linux/getlogin_r.c
@@ -34,7 +34,7 @@ int
 attribute_hidden
 __getlogin_r_loginuid (char *name, size_t namesize)
 {
-  int fd = open_not_cancel_2 ("/proc/self/loginuid", O_RDONLY);
+  int fd = __open_nocancel ("/proc/self/loginuid", O_RDONLY);
   if (fd == -1)
     return -1;
 
diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
index a0dd6eb..e21a34c 100644
--- a/sysdeps/unix/sysv/linux/getsysstats.c
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
@@ -143,7 +143,7 @@ __get_nprocs (void)
   char *re = buffer_end;
 
   const int flags = O_RDONLY | O_CLOEXEC;
-  int fd = open_not_cancel_2 ("/sys/devices/system/cpu/online", flags);
+  int fd = __open_nocancel ("/sys/devices/system/cpu/online", flags);
   char *l;
   int result = 0;
   if (fd != -1)
@@ -194,7 +194,7 @@ __get_nprocs (void)
   result = 2;
 
   /* The /proc/stat format is more uniform, use it by default.  */
-  fd = open_not_cancel_2 ("/proc/stat", flags);
+  fd = __open_nocancel ("/proc/stat", flags);
   if (fd != -1)
     {
       result = 0;
@@ -211,7 +211,7 @@ __get_nprocs (void)
     }
   else
     {
-      fd = open_not_cancel_2 ("/proc/cpuinfo", flags);
+      fd = __open_nocancel ("/proc/cpuinfo", flags);
       if (fd != -1)
 	{
 	  GET_NPROCS_PARSER (fd, buffer, cp, re, buffer_end, result);
diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c
index 8cebde3..97c6ba7 100644
--- a/sysdeps/unix/sysv/linux/grantpt.c
+++ b/sysdeps/unix/sysv/linux/grantpt.c
@@ -31,9 +31,9 @@ close_all_fds (void)
 
       __closedir (dir);
 
-      int nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_RDONLY);
+      int nullfd = __open_nocancel (_PATH_DEVNULL, O_RDONLY);
       assert (nullfd == STDIN_FILENO);
-      nullfd = open_not_cancel_2 (_PATH_DEVNULL, O_WRONLY);
+      nullfd = __open_nocancel (_PATH_DEVNULL, O_WRONLY);
       assert (nullfd == STDOUT_FILENO);
       __dup2 (STDOUT_FILENO, STDERR_FILENO);
     }
diff --git a/sysdeps/unix/sysv/linux/i386/smp.h b/sysdeps/unix/sysv/linux/i386/smp.h
index 3109ea9..c24f2fd 100644
--- a/sysdeps/unix/sysv/linux/i386/smp.h
+++ b/sysdeps/unix/sysv/linux/i386/smp.h
@@ -41,7 +41,7 @@ is_smp_system (void)
   else
     {
       /* This was not successful.  Now try reading the /proc filesystem.  */
-      int fd = open_not_cancel_2 ("/proc/sys/kernel/version", O_RDONLY);
+      int fd = __open_nocancel ("/proc/sys/kernel/version", O_RDONLY);
       if (__builtin_expect (fd, 0) == -1
 	  || read_not_cancel (fd, u.buf, sizeof (u.buf)) <= 0)
 	/* This also didn't work.  We give up and say it's a UP machine.  */
diff --git a/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c b/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c
index 2207c88..04e395b 100644
--- a/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c
+++ b/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c
@@ -30,7 +30,7 @@ has_cpuclock (void)
   if (__builtin_expect (itc_usable == 0, 0))
     {
       int newval = 1;
-      int fd = open_not_cancel_2 ("/proc/sal/itc_drift", O_RDONLY);
+      int fd = __open_nocancel ("/proc/sal/itc_drift", O_RDONLY);
       if (__builtin_expect (fd != -1, 1))
 	{
 	  char buf[16];
diff --git a/sysdeps/unix/sysv/linux/libc_fatal.c b/sysdeps/unix/sysv/linux/libc_fatal.c
index d22bfdc..5b484cf 100644
--- a/sysdeps/unix/sysv/linux/libc_fatal.c
+++ b/sysdeps/unix/sysv/linux/libc_fatal.c
@@ -53,7 +53,7 @@ backtrace_and_maps (int do_abort, bool written, int fd)
           __backtrace_symbols_fd (addrs + 1, n - 1, fd);
 
           writestr (strnsize ("======= Memory map: ========\n"));
-          int fd2 = open_not_cancel_2 ("/proc/self/maps", O_RDONLY);
+          int fd2 = __open_nocancel ("/proc/self/maps", O_RDONLY);
           char buf[1024];
           ssize_t n2;
           while ((n2 = read_not_cancel (fd2, buf, sizeof (buf))) > 0)
diff --git a/sysdeps/unix/sysv/linux/malloc-sysdep.h b/sysdeps/unix/sysv/linux/malloc-sysdep.h
index 48cf7c1..cb87b58 100644
--- a/sysdeps/unix/sysv/linux/malloc-sysdep.h
+++ b/sysdeps/unix/sysv/linux/malloc-sysdep.h
@@ -42,8 +42,8 @@ check_may_shrink_heap (void)
 
   if (__builtin_expect (may_shrink_heap == 0, 1))
     {
-      int fd = open_not_cancel_2 ("/proc/sys/vm/overcommit_memory",
-				  O_RDONLY | O_CLOEXEC);
+      int fd = __open_nocancel ("/proc/sys/vm/overcommit_memory",
+				O_RDONLY | O_CLOEXEC);
       if (fd >= 0)
 	{
 	  char val;
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index 43959ba..8d897f0 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -20,23 +20,19 @@
 #ifndef NOT_CANCEL_H
 # define NOT_CANCEL_H
 
+#include <fcntl.h>
 #include <sysdep.h>
 #include <errno.h>
 #include <unistd.h>
 #include <sys/syscall.h>
 
-/* Uncancelable open.  */
-#ifdef __NR_open
-# define open_not_cancel(name, flags, mode) \
-   INLINE_SYSCALL (open, 3, name, flags, mode)
-# define open_not_cancel_2(name, flags) \
-   INLINE_SYSCALL (open, 2, name, flags)
-#else
-# define open_not_cancel(name, flags, mode) \
-   INLINE_SYSCALL (openat, 4, AT_FDCWD, name, flags, mode)
-# define open_not_cancel_2(name, flags) \
-   INLINE_SYSCALL (openat, 3, AT_FDCWD, name, flags)
-#endif
+/* Non cancellable open syscall.  */
+__typeof (open) __open_nocancel;
+libc_hidden_proto (__open_nocancel)
+
+/* Non cancellable open syscall (LFS version).  */
+__typeof (open64) __open64_nocancel;
+libc_hidden_proto (__open64_nocancel)
 
 /* Uncancelable read.  */
 #define __read_nocancel(fd, buf, len) \
diff --git a/sysdeps/unix/sysv/linux/open.c b/sysdeps/unix/sysv/linux/open.c
index b3912d5..3ef0e53 100644
--- a/sysdeps/unix/sysv/linux/open.c
+++ b/sysdeps/unix/sysv/linux/open.c
@@ -22,6 +22,7 @@
 #include <stdarg.h>
 
 #include <sysdep-cancel.h>
+#include <not-cancel.h>
 
 #ifndef __OFF_T_MATCHES_OFF64_T
 
@@ -48,4 +49,24 @@ weak_alias (__libc_open, __open)
 libc_hidden_weak (__open)
 weak_alias (__libc_open, open)
 
+# if !IS_IN (rtld)
+int
+__open_nocancel (const char *file, int oflag, ...)
+{
+  int mode = 0;
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+    }
+
+  return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag, mode);
+}
+# else
+strong_alias (__libc_open, __open_nocancel)
+# endif
+libc_hidden_def (__open_nocancel)
 #endif
diff --git a/sysdeps/unix/sysv/linux/open64.c b/sysdeps/unix/sysv/linux/open64.c
index fcac984..b4702c3 100644
--- a/sysdeps/unix/sysv/linux/open64.c
+++ b/sysdeps/unix/sysv/linux/open64.c
@@ -21,6 +21,13 @@
 #include <stdarg.h>
 
 #include <sysdep-cancel.h>
+#include <not-cancel.h>
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+# define EXTRA_OPEN_FLAGS 0
+#else
+# define EXTRA_OPEN_FLAGS O_LARGEFILE
+#endif
 
 /* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
    a third argument is the file protection.  */
@@ -37,12 +44,6 @@ __libc_open64 (const char *file, int oflag, ...)
       va_end (arg);
     }
 
-#ifdef __OFF_T_MATCHES_OFF64_T
-# define EXTRA_OPEN_FLAGS 0
-#else
-# define EXTRA_OPEN_FLAGS O_LARGEFILE
-#endif
-
   return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS,
 			 mode);
 }
@@ -51,9 +52,34 @@ strong_alias (__libc_open64, __open64)
 libc_hidden_weak (__open64)
 weak_alias (__libc_open64, open64)
 
+# if !IS_IN (rtld)
+int
+__open64_nocancel (const char *file, int oflag, ...)
+{
+  int mode = 0;
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+    }
+
+  return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS,
+			      mode);
+}
+#else
+strong_alias (__libc_open64, __open64_nocancel)
+#endif
+libc_hidden_def (__open64_nocancel)
+
 #ifdef __OFF_T_MATCHES_OFF64_T
 strong_alias (__libc_open64, __libc_open)
 strong_alias (__libc_open64, __open)
 libc_hidden_weak (__open)
 weak_alias (__libc_open64, open)
+
+strong_alias (__open64_nocancel, __open_nocancel)
+libc_hidden_weak (__open_nocancel)
 #endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c b/sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c
index b8d01d8..c99e7de 100644
--- a/sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c
+++ b/sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c
@@ -40,7 +40,7 @@ __get_clockfreq (void)
      contains at least one line like:
      timebase        : 33333333
      We search for this line and convert the number into an integer.  */
-  int fd = open_not_cancel_2 ("/proc/cpuinfo", O_RDONLY);
+  int fd = __open_nocancel ("/proc/cpuinfo", O_RDONLY);
   if (__glibc_likely (fd != -1))
     return result;
 
diff --git a/sysdeps/unix/sysv/linux/pthread_getname.c b/sysdeps/unix/sysv/linux/pthread_getname.c
index 9a5343a..caab2cc 100644
--- a/sysdeps/unix/sysv/linux/pthread_getname.c
+++ b/sysdeps/unix/sysv/linux/pthread_getname.c
@@ -45,7 +45,7 @@ pthread_getname_np (pthread_t th, char *buf, size_t len)
   char fname[sizeof (FMT) + 8];
   sprintf (fname, FMT, (unsigned int) pd->tid);
 
-  int fd = open_not_cancel_2 (fname, O_RDONLY);
+  int fd = __open_nocancel (fname, O_RDONLY);
   if (fd == -1)
     return errno;
 
diff --git a/sysdeps/unix/sysv/linux/pthread_setname.c b/sysdeps/unix/sysv/linux/pthread_setname.c
index 5769c5b..93f0e9d 100644
--- a/sysdeps/unix/sysv/linux/pthread_setname.c
+++ b/sysdeps/unix/sysv/linux/pthread_setname.c
@@ -46,7 +46,7 @@ pthread_setname_np (pthread_t th, const char *name)
   char fname[sizeof (FMT) + 8];
   sprintf (fname, FMT, (unsigned int) pd->tid);
 
-  int fd = open_not_cancel_2 (fname, O_RDWR);
+  int fd = __open_nocancel (fname, O_RDWR);
   if (fd == -1)
     return errno;
 
diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c
index c56f894..4994a07 100644
--- a/sysdeps/unix/sysv/linux/spawni.c
+++ b/sysdeps/unix/sysv/linux/spawni.c
@@ -230,7 +230,7 @@ __spawni_child (void *arguments)
 		   paths (like /dev/watchdog).  */
 		close_not_cancel (action->action.open_action.fd);
 
-		int ret = open_not_cancel (action->action.open_action.path,
+		int ret = __open_nocancel (action->action.open_action.path,
 					   action->action.
 					   open_action.oflag | O_LARGEFILE,
 					   action->action.open_action.mode);
diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c
index db20977..ab068ab 100644
--- a/sysdeps/unix/sysv/linux/sysconf.c
+++ b/sysdeps/unix/sysv/linux/sysconf.c
@@ -115,7 +115,7 @@ __sysconf (int name)
 
   if (procfname != NULL)
     {
-      int fd = open_not_cancel_2 (procfname, O_RDONLY);
+      int fd = __open_nocancel (procfname, O_RDONLY);
       if (fd != -1)
 	{
 	  /* This is more than enough, the file contains a single integer.  */