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authorZack Weinberg <zackw@panix.com>2017-03-22 10:55:38 -0400
committerZack Weinberg <zackw@panix.com>2017-06-14 07:51:30 -0400
commit37f802f86400684c8d13403958b2c598721d6360 (patch)
tree1e7281fbdff02e8e0818300cf0ac1d496956d1a9 /stdio-common
parent0572433b5beb636de1a49ec6b4fdab830c38cdc5 (diff)
downloadglibc-37f802f86400684c8d13403958b2c598721d6360.tar.gz
Remove __need_IOV_MAX and __need_FOPEN_MAX.
__need_FOPEN_MAX wasn't being used anywhere. __need_IOV_MAX was more complicated; the basic deal is that sys/uio.h wants to define a constant named UIO_MAXIOV and bits/xopen_lim.h wants to define a constant named IOV_MAX, with the same meaning. For no apparent reason this was being handled via bits/stdio_lim.h -- stdio.h is NOT supposed to define IOV_MAX -- and some mess in Makerules. Also, bits/uio.h on Linux was being used as a dumping ground for extension functions. So now we have bits/uio_lim.h, which defines __IOV_MAX. bits/xopen_lim.h and sys/uio.h use that to define their respective constants. We also now have bits/uio-ext.h, which is the official Proper Home for extensions to sys/uio.h. bits/uio.h is removed, and stdio_lim.h doesn't define IOV_MAX at all. * bits/uio_lim.h, sysdeps/unix/sysv/linux/bits/uio_lim.h * bits/uio-ext.h, sysdeps/unix/sysv/linux/bits/uio-ext.h: New file. * bits/uio.h, sysdeps/unix/sysv/linux/bits/uio.h: Delete file. * include/bits/xopen_lim.h: Use bits/uio_lim.h to get the value for IOV_MAX. * misc/Makefile: Install bits/uio-ext.h and bits/uio_lim.h. Don't install bits/uio.h. * misc/sys/uio.h: Don't include bits/uio.h. Do include bits/types/struct_iovec.h and bits/uio_lim.h. Set UIO_MAXIOV based on __IOV_MAX. Under __USE_GNU, also include bits/uio-ext.h. * stdio-common/stdio_lim.h.in: Remove logic for __need_FOPEN_MAX and __need_IOV_MAX. Don't define IOV_MAX at all. * Makerules (stdio_lim.h): Remove logic for setting IOV_MAX. * sysdeps/unix/sysv/linux/bits/fcntl-linux.h: Include bits/types/struct_iovec.h, not bits/uio.h. Use __ssize_t, not ssize_t, in function prototypes. Don't use hard TAB for double space after period in comments.
Diffstat (limited to 'stdio-common')
-rw-r--r--stdio-common/stdio_lim.h.in31
1 files changed, 14 insertions, 17 deletions
diff --git a/stdio-common/stdio_lim.h.in b/stdio-common/stdio_lim.h.in
index 510bf008aa..5288907469 100644
--- a/stdio-common/stdio_lim.h.in
+++ b/stdio-common/stdio_lim.h.in
@@ -15,28 +15,25 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if !defined _STDIO_H && !defined __need_FOPEN_MAX && !defined __need_IOV_MAX
+#ifndef _BITS_STDIO_LIM_H
+#define _BITS_STDIO_LIM_H 1
+
+#ifndef _STDIO_H
# error "Never include <bits/stdio_lim.h> directly; use <stdio.h> instead."
#endif
-#ifdef _STDIO_H
-# define L_tmpnam @L_tmpnam@
-# define TMP_MAX @TMP_MAX@
-# define FILENAME_MAX @FILENAME_MAX@
+#define L_tmpnam @L_tmpnam@
+#define TMP_MAX @TMP_MAX@
+#define FILENAME_MAX @FILENAME_MAX@
-# ifdef __USE_POSIX
-# define L_ctermid @L_ctermid@
-# if !defined __USE_XOPEN2K || defined __USE_GNU
-# define L_cuserid @L_cuserid@
-# endif
+#ifdef __USE_POSIX
+# define L_ctermid @L_ctermid@
+# if !defined __USE_XOPEN2K || defined __USE_GNU
+# define L_cuserid @L_cuserid@
# endif
#endif
-#if defined __need_FOPEN_MAX || defined _STDIO_H
-# undef FOPEN_MAX
-# define FOPEN_MAX @FOPEN_MAX@
-#endif
+#undef FOPEN_MAX
+#define FOPEN_MAX @FOPEN_MAX@
-#if defined __need_IOV_MAX && !defined IOV_MAX
-@define_IOV_MAX@
-#endif
+#endif /* bits/stdio_lim.h */