Consolidate non cancellable write call

This patch consolidates all the non cancellable write calls to use
the __write_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.

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

	* sysdeps/generic/not-cancel.h (write_not_cancel): Remove macro.
	(__write_nocancel): New macro.
	* sysdeps/unix/sysv/linux/not-cancel.h (__write_nocancel):
	Rewrite as a function prototype.
	(write_not_cancel): Remove macro.
	* sysdeps/unix/sysv/linux/write.c (__write_nocancel): New function.
	* gmon/gmon.c (ERR): Replace write_not_cancel with __write_nocancel.
	(write_gmon): Likewise.
	* libio/fileops.c (_IO_new_file_write): Likewise.
	* login/utmp_file.c (pututline_file): Likewise.
	(updwtmp_file): Likewise.
	* stdio-common/psiginfo.c (psiginfo): Likewise.
	* sysdeps/posix/spawni.c (__spawni_child): Likewise.
	* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Likewise.
	* sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps):
	Likewise.
	* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
	Likewise.

5 files changed, 18 insertions, 10 deletions

diff --git a/sysdeps/unix/sysv/linux/gethostid.c b/sysdeps/unix/sysv/linux/gethostid.c
index 6e19dee30a..11c7e7321b 100644
--- a/sysdeps/unix/sysv/linux/gethostid.c
+++ b/sysdeps/unix/sysv/linux/gethostid.c
@@ -51,7 +51,7 @@ sethostid (long int id)
   if (fd < 0)
     return -1;
 
-  written = write_not_cancel (fd, &id32, sizeof (id32));
+  written = __write_nocancel (fd, &id32, sizeof (id32));
 
   close_not_cancel_no_status (fd);
 
diff --git a/sysdeps/unix/sysv/linux/libc_fatal.c b/sysdeps/unix/sysv/linux/libc_fatal.c
index ca838a7eca..c7c6a07004 100644
--- a/sysdeps/unix/sysv/linux/libc_fatal.c
+++ b/sysdeps/unix/sysv/linux/libc_fatal.c
@@ -48,7 +48,7 @@ backtrace_and_maps (int do_abort, bool written, int fd)
       if (n > 2)
         {
 #define strnsize(str) str, strlen (str)
-#define writestr(str) write_not_cancel (fd, str)
+#define writestr(str) __write_nocancel (fd, str)
           writestr (strnsize ("======= Backtrace: =========\n"));
           __backtrace_symbols_fd (addrs + 1, n - 1, fd);
 
@@ -57,7 +57,7 @@ backtrace_and_maps (int do_abort, bool written, int fd)
           char buf[1024];
           ssize_t n2;
           while ((n2 = __read_nocancel (fd2, buf, sizeof (buf))) > 0)
-            if (write_not_cancel (fd, buf, n2) != n2)
+            if (__write_nocancel (fd, buf, n2) != n2)
               break;
           close_not_cancel_no_status (fd2);
         }
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index 3d26075e11..84dc72a1f2 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -39,8 +39,8 @@ __typeof (__read) __read_nocancel;
 libc_hidden_proto (__read_nocancel)
 
 /* Uncancelable write.  */
-#define __write_nocancel(fd, buf, len) \
-  INLINE_SYSCALL (write, 3, fd, buf, len)
+__typeof (__write) __write_nocancel;
+libc_hidden_proto (__write_nocancel)
 
 /* Uncancelable openat.  */
 #define openat_not_cancel(fd, fname, oflag, mode) \
@@ -61,10 +61,6 @@ libc_hidden_proto (__read_nocancel)
   (void) ({ INTERNAL_SYSCALL_DECL (err);				      \
 	    INTERNAL_SYSCALL (close, err, 1, (fd)); })
 
-/* Uncancelable write.  */
-#define write_not_cancel(fd, buf, n) \
-  __write_nocancel (fd, buf, n)
-
 /* Uncancelable writev.  */
 #define writev_not_cancel_no_status(fd, iov, n) \
   (void) ({ INTERNAL_SYSCALL_DECL (err);				      \
diff --git a/sysdeps/unix/sysv/linux/pthread_setname.c b/sysdeps/unix/sysv/linux/pthread_setname.c
index 93f0e9ddde..c5e9a339e8 100644
--- a/sysdeps/unix/sysv/linux/pthread_setname.c
+++ b/sysdeps/unix/sysv/linux/pthread_setname.c
@@ -51,7 +51,7 @@ pthread_setname_np (pthread_t th, const char *name)
     return errno;
 
   int res = 0;
-  ssize_t n = TEMP_FAILURE_RETRY (write_not_cancel (fd, name, name_len));
+  ssize_t n = TEMP_FAILURE_RETRY (__write_nocancel (fd, name, name_len));
   if (n < 0)
     res = errno;
   else if (n != name_len)
diff --git a/sysdeps/unix/sysv/linux/write.c b/sysdeps/unix/sysv/linux/write.c
index d49514502e..f8896eb2e3 100644
--- a/sysdeps/unix/sysv/linux/write.c
+++ b/sysdeps/unix/sysv/linux/write.c
@@ -18,6 +18,7 @@
 
 #include <unistd.h>
 #include <sysdep-cancel.h>
+#include <not-cancel.h>
 
 /* Write NBYTES of BUF to FD.  Return the number written, or -1.  */
 ssize_t
@@ -31,3 +32,14 @@ weak_alias (__libc_write, __write)
 libc_hidden_weak (__write)
 weak_alias (__libc_write, write)
 libc_hidden_weak (write)
+
+#if !IS_IN (rtld)
+ssize_t
+__write_nocancel (int fd, const void *buf, size_t nbytes)
+{
+  return INLINE_SYSCALL_CALL (write, fd, buf, nbytes);
+}
+#else
+strong_alias (__libc_write, __write_nocancel)
+#endif
+libc_hidden_def (__write_nocancel)