stubs: unified from future

Future branch extends stubs with ret_enosys_stub.
Resolve conflicts, and use superset of future and current master.
Adjust posix_fadvise* accordingly.

Upon future merge, pick this master version as the final state.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

3 files changed, 111 insertions, 62 deletions

diff --git a/libc/sysdeps/linux/common/posix_fadvise.c b/libc/sysdeps/linux/common/posix_fadvise.c
index 17831c201..84b7c40d0 100644
--- a/libc/sysdeps/linux/common/posix_fadvise.c
+++ b/libc/sysdeps/linux/common/posix_fadvise.c
@@ -15,21 +15,17 @@
 #define __NR_posix_fadvise __NR_fadvise64
 int posix_fadvise(int fd, off_t offset, off_t len, int advice)
 {
+	int ret;
 	INTERNAL_SYSCALL_DECL(err);
-	int ret = (int) (INTERNAL_SYSCALL(posix_fadvise, err, 5, fd,
+	ret = (int) (INTERNAL_SYSCALL(posix_fadvise, err, 5, fd,
 	 __LONG_LONG_PAIR (offset >> 31, offset), len, advice));
     if (INTERNAL_SYSCALL_ERROR_P (ret, err))
       return INTERNAL_SYSCALL_ERRNO (ret, err);
     return 0;
 }
 
-#if defined __UCLIBC_HAS_LFS__ && !defined __NR_fadvise64_64
+# if defined __UCLIBC_HAS_LFS__ && !defined __NR_fadvise64_64
 strong_alias(posix_fadvise,posix_fadvise64)
-#endif
+# endif
 
-#elif defined __UCLIBC_HAS_STUBS__
-int posix_fadvise(int fd attribute_unused, off_t offset attribute_unused, off_t len attribute_unused, int advice attribute_unused)
-{
-	return ENOSYS;
-}
 #endif
diff --git a/libc/sysdeps/linux/common/posix_fadvise64.c b/libc/sysdeps/linux/common/posix_fadvise64.c
index e8a530fdf..fa9ff219f 100644
--- a/libc/sysdeps/linux/common/posix_fadvise64.c
+++ b/libc/sysdeps/linux/common/posix_fadvise64.c
@@ -58,13 +58,5 @@ int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice)
 #error your machine is neither 32 bit or 64 bit ... it must be magical
 #endif
 
-#elif !defined __NR_fadvise64 && defined __UCLIBC_HAS_STUBS__
-/* This is declared as a strong alias in posix_fadvise.c if __NR_fadvise64
- * is defined.
- */
-int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice)
-{
-	return ENOSYS;
-}
 #endif /* __NR_fadvise64_64 */
 #endif /* __UCLIBC_HAS_LFS__ */
diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c
index 02cd72495..6afc8d93a 100644
--- a/libc/sysdeps/linux/common/stubs.c
+++ b/libc/sysdeps/linux/common/stubs.c
@@ -6,31 +6,55 @@
  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  */
 
+/* Please keep the list sorted alphabetically, in ascending order
+ * of the stub name!  */
+
 #include <errno.h>
 #include <bits/wordsize.h>
 #include <sys/syscall.h>
 
 #ifdef __UCLIBC_HAS_STUBS__
 
-static int enosys_stub(void) __attribute_used__;
-static int enosys_stub(void)
+__attribute_used__ static int enosys_stub(void)
 {
 	__set_errno(ENOSYS);
 	return -1;
 }
 
+__attribute_used__ static int ret_enosys_stub(void)
+{
+	return ENOSYS;
+}
+
 #define make_stub(stub) \
 	link_warning(stub, #stub ": this function is not implemented") \
 	strong_alias(enosys_stub, stub)
 
+#define make_ret_stub(stub) \
+	link_warning(stub, #stub ": this function is not implemented") \
+	strong_alias(ret_enosys_stub, stub)
+
 #ifndef __ARCH_USE_MMU__
 # undef __NR_fork
 #endif
 
+#ifdef __arm__
+# define __NR_fadvise64_64 __NR_arm_fadvise64_64
+# define __NR_fadvise64 __NR_arm_fadvise64_64
+#endif
+
+#ifdef __mips__
+# define __NR_fadvise64_64 __NR_fadvise64
+#endif
+
+#ifdef __xtensa__
+# define __NR_fadvise64 __NR_fadvise64_64
+#endif
+
 #ifndef __UCLIBC_HAS_LFS__
-# undef __NR_fadvise64
-# undef __NR_fadvise64_64
+# undef __NR_readahead
 # undef __NR_sync_file_range
+# undef __NR_splice
 #endif
 
 #if !defined __NR_accept && !defined __NR_socketcall && defined __UCLIBC_HAS_SOCKET__
@@ -45,14 +69,6 @@ make_stub(accept4)
 make_stub(arch_prctl)
 #endif
 
-#if !defined __NR_capget && defined __UCLIBC_LINUX_SPECIFIC__
-make_stub(capget)
-#endif
-
-#if !defined __NR_capset && defined __UCLIBC_LINUX_SPECIFIC__
-make_stub(capset)
-#endif
-
 #if !defined __NR_bdflush && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(bdflush)
 #endif
@@ -61,11 +77,11 @@ make_stub(bdflush)
 make_stub(bind)
 #endif
 
-#ifndef __NR_capget
+#if !defined __NR_capget && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(capget)
 #endif
 
-#ifndef __NR_capset
+#if !defined __NR_capset && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(capset)
 #endif
 
@@ -81,15 +97,19 @@ make_stub(create_module)
 make_stub(delete_module)
 #endif
 
-#ifndef __NR_epoll_create
+#if !defined __NR_epoll_create && defined __UCLIBC_HAS_EPOLL__
 make_stub(epoll_create)
 #endif
 
-#ifndef __NR_epoll_ctl
+#if !defined __NR_epoll_ctl && defined __UCLIBC_HAS_EPOLL__
 make_stub(epoll_ctl)
 #endif
 
-#ifndef __NR_epoll_wait
+#if !defined __NR_epoll_pwait && defined __UCLIBC_HAS_EPOLL__
+make_stub(epoll_pwait)
+#endif
+
+#if !defined __NR_epoll_wait && defined __UCLIBC_HAS_EPOLL__
 make_stub(epoll_wait)
 #endif
 
@@ -97,10 +117,14 @@ make_stub(epoll_wait)
 make_stub(eventfd)
 #endif
 
-#ifndef __NR_fdatasync
+#if !defined __NR_fdatasync && !defined __NR_osf_fdatasync
 make_stub(fdatasync)
 #endif
 
+#ifndef __NR_fgetxattr
+make_stub(fgetxattr)
+#endif
+
 #ifndef __NR_flistxattr
 make_stub(flistxattr)
 #endif
@@ -109,10 +133,6 @@ make_stub(flistxattr)
 make_stub(fork)
 #endif
 
-#ifndef __NR_fgetxattr
-make_stub(fgetxattr)
-#endif
-
 #ifndef __NR_fremovexattr
 make_stub(fremovexattr)
 #endif
@@ -129,10 +149,6 @@ make_stub(fstatfs)
 make_stub(get_kernel_syms)
 #endif
 
-#if !defined __NR_getcpu && defined __UCLIBC_LINUX_SPECIFIC__ && ((defined __x86_64__ && !defined __UCLIBC_HAS_TLS__) || !defined __x86_64__)
-make_stub(sched_getcpu)
-#endif
-
 #if !defined __NR_getpeername && !defined __NR_socketcall && defined __UCLIBC_HAS_SOCKET__
 make_stub(getpeername)
 #endif
@@ -157,6 +173,10 @@ make_stub(getxattr)
 make_stub(init_module)
 #endif
 
+#if !defined __NR_inotify_add_watch && defined __UCLIBC_LINUX_SPECIFIC__
+make_stub(inotify_add_watch)
+#endif
+
 #if !defined __NR_inotify_init && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(inotify_init)
 #endif
@@ -165,10 +185,6 @@ make_stub(inotify_init)
 make_stub(inotify_init1)
 #endif
 
-#if !defined __NR_inotify_add_watch && defined __UCLIBC_LINUX_SPECIFIC__
-make_stub(inotify_add_watch)
-#endif
-
 #if !defined __NR_inotify_rm_watch && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(inotify_rm_watch)
 #endif
@@ -213,6 +229,13 @@ make_stub(madvise)
 make_stub(modify_ldt)
 #endif
 
+#ifndef __NR_openat
+make_stub(openat)
+# ifdef __UCLIBC_HAS_LFS__
+make_stub(openat64)
+# endif
+#endif
+
 #if !defined __NR_personality && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(personality)
 #endif
@@ -225,6 +248,18 @@ make_stub(pipe2)
 make_stub(pivot_root)
 #endif
 
+#if !defined __NR_fadvise64 && defined __UCLIBC_HAS_LFS__
+make_ret_stub(posix_fadvise)
+#endif
+
+#if !defined __NR_fadvise64_64 && defined __UCLIBC_HAS_LFS__ && __WORDSIZE == 32
+make_ret_stub(posix_fadvise64)
+#endif
+
+#ifndef __NR_madvise
+make_ret_stub(posix_madvise)
+#endif
+
 #if !defined __NR_ppoll && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(ppoll)
 #endif
@@ -233,6 +268,10 @@ make_stub(ppoll)
 make_stub(prctl)
 #endif
 
+#if !defined __NR_query_module && defined __UCLIBC_LINUX_MODULE_24__
+make_stub(query_module)
+#endif
+
 #if !defined __NR_readahead && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(readahead)
 #endif
@@ -241,10 +280,6 @@ make_stub(readahead)
 make_stub(reboot)
 #endif
 
-#if !defined __NR_query_module && defined __UCLIBC_LINUX_MODULE_24__
-make_stub(query_module)
-#endif
-
 #if !defined __NR_recv && !defined __NR_socketcall && !defined __NR_recvfrom && defined __UCLIBC_HAS_SOCKET__
 make_stub(recv)
 #endif
@@ -265,10 +300,18 @@ make_stub(remap_file_pages)
 make_stub(removexattr)
 #endif
 
+#ifndef __NR_renameat
+make_stub(renameat)
+#endif
+
 #if !defined __NR_sched_getaffinity && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(sched_getaffinity)
 #endif
 
+#if !defined __NR_getcpu && defined __UCLIBC_LINUX_SPECIFIC__ && ((defined __x86_64__ && !defined __UCLIBC_HAS_TLS__) || !defined __x86_64__)
+make_stub(sched_getcpu)
+#endif
+
 #if !defined __NR_sched_setaffinity && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(sched_setaffinity)
 #endif
@@ -325,6 +368,15 @@ make_stub(shutdown)
 make_stub(signalfd)
 #endif
 
+#ifndef __NR_rt_sigtimedwait
+make_stub(sigtimedwait)
+make_stub(sigwaitinfo)
+#endif
+
+#ifndef __NR_rt_sigqueueinfo
+make_stub(sigqueue)
+#endif
+
 #if !defined __NR_socket && !defined __NR_socketcall && defined __UCLIBC_HAS_SOCKET__
 make_stub(socket)
 #endif
@@ -337,9 +389,9 @@ make_stub(socketcall)
 make_stub(socketpair)
 #endif
 
-#ifndef __NR_rt_sigtimedwait
-make_stub(sigtimedwait)
-make_stub(sigwaitinfo)
+#if !defined __NR_stime && !defined __NR_settimeofday
+make_stub(stime)
+make_stub(settimeofday)
 #endif
 
 #if !defined __NR_splice && defined __UCLIBC_LINUX_SPECIFIC__
@@ -354,6 +406,10 @@ make_stub(swapoff)
 make_stub(swapon)
 #endif
 
+#ifndef __NR_symlink
+make_stub(symlink)
+#endif
+
 #if !defined __NR_sync_file_range && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(sync_file_range)
 #endif
@@ -382,6 +438,19 @@ make_stub(timerfd_settime)
 make_stub(timerfd_gettime)
 #endif
 
+#ifndef __NR_utimensat
+make_stub(futimens)
+make_stub(utimensat)
+# ifndef __NR_lutimes
+make_stub(lutimes)
+# endif
+#endif
+
+#if !defined __NR_utime && !defined __NR_utimes
+/*make_stub(utime) obsoleted */
+make_stub(utimes)
+#endif
+
 #if !defined __NR_umount && !defined __NR_umount2 && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(umount)
 #endif
@@ -394,19 +463,11 @@ make_stub(umount2)
 make_stub(unshare)
 #endif
 
-#ifndef __NR_utimensat
-make_stub(futimens)
-make_stub(utimensat)
-# ifndef __NR_lutimes
-make_stub(lutimes)
-# endif
-#endif
-
 #if !defined __NR_vhangup && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(vhangup)
 #endif
 
-#ifndef __NR_vmsplice
+#if !defined __NR_vmsplice && defined __UCLIBC_LINUX_SPECIFIC__
 make_stub(vmsplice)
 #endif