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This patch consolidates the creat Linux syscall implementation on
sysdeps/unix/sysv/linux/creat{64}.c. The changes are:
1. Remove creat{64} from auto-generation syscalls.list.
2. Add a new creat{64}.c implementation. For architectures that
define __OFF_T_MATCHES_OFF64_T the default creat64 will create
alias to required creat symbols.
3. Use __NR_creat where possible, otherwise use internal open{64}
call with expected flags.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
* io/Makefile (CFLAGS-creat.c): New rule.
(CFLAGS-creat64.c): Likewise.
* sysdeps/unix/sysv/linux/alpha/creat.c: Remove file.
* sysdeps/unix/sysv/linux/generic/creat.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/creat.c: New file.
* sysdeps/unix/sysv/linux/creat64.c: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Remove create from
auto-generated list.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
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glibc has lots of __libc_* function names that no longer serve any
purpose (are not used for any calls or exported at a public symbol
version). This patch removes __libc_creat. It has the effect of
creat becoming a strong symbol instead of a weak symbol in various
cases, but that's fine; in shared libraries it doesn't matter at all,
while for static linking the only other symbol sometimes defined in
the same object is creat64, and whenever creat64 is a reserved name so
is creat.
Other such cases of unnecessary __libc_* symbols are expected to be
dealt with in separate patches over time.
Tested for x86_64 (testsuite, and that the disassembly of installed
shared libraries is unchanged by the patch).
* include/fcntl.h (__libc_creat): Remove declaration.
* io/creat.c (__libc_creat): Rename to creat.
(creat): Do not define as alias.
* sysdeps/unix/sysv/linux/alpha/creat.c (creat64): Define as alias
of creat instead of __libc_creat.
* sysdeps/unix/sysv/linux/generic/creat.c (__libc_creat): Rename
to creat.
(creat): Do not define as alias.
[__WORDSIZE == 64] (creat64): Define as alias of creat instead of
__libc_creat.
* sysdeps/unix/sysv/linux/syscalls.list (creat): Do not define
__libc_creat name.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (creat):
Likewise.
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Also fixed the following whitespace nits to satisfy the push:
sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
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