[PATCH 1/7] tools/nolibc: also handle _llseek system call

[Thomas Weißschuh]

On some architectures the llseek system call contains a leading
underscore. Also check for that one and prefer it over the lseek system
call as it is necessary for 64-bit offset handling.

Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
 tools/include/nolibc/sys.h | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 6335fd51f07f..82a1e36e7290 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -597,12 +597,18 @@ int link(const char *old, const char *new)
 static __attribute__((unused))
 off_t _sys_lseek(int fd, off_t offset, int whence)
 {
-#if defined(__NR_llseek)
+#if defined(__NR_llseek) || defined(__NR__llseek)
 	__kernel_loff_t loff = 0;
+	int ret, nr_llseek;
 	off_t result;
-	int ret;
 
-	ret = __nolibc_syscall5(__NR_llseek, fd, offset >> 32, (uint32_t)offset, &loff, whence);
+#if defined(__NR_llseek)
+	nr_llseek = __NR_llseek;
+#else
+	nr_llseek = __NR__llseek;
+#endif
+
+	ret = __nolibc_syscall5(nr_llseek, fd, offset >> 32, (uint32_t)offset, &loff, whence);
 	if (ret < 0)
 		result = ret;
 	else

-- 
2.53.0