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authorYoshinori Sato <ysato@users.sourceforge.jp>2016-01-04 13:44:25 (GMT)
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-01-06 22:56:27 (GMT)
commitd42417f680f91c45b2a021fcc2c8a5fa1443a245 (patch)
tree237dd3c825df67801eaaf03ef367a514fbdbc02f /libc
parentd41cec56d5c04d88aa2d06986b692cd1fa279748 (diff)
openat argument fix.
If argument passing to register case (ex. -mregparam=3). This case set all parameters set to register from caller. But callee refer to stack. So can't get parameter. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/common/openat.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/openat.c b/libc/sysdeps/linux/common/openat.c
index f6032da..f71567c 100644
--- a/libc/sysdeps/linux/common/openat.c
+++ b/libc/sysdeps/linux/common/openat.c
@@ -8,11 +8,24 @@
#include <sys/syscall.h>
#include <fcntl.h>
+#include <stdarg.h>
#ifdef __NR_openat
# define __NR___syscall_openat __NR_openat
static __inline__ _syscall4(int, __syscall_openat, int, fd, const char *, file, int, oflag, mode_t, mode)
-strong_alias_untyped(__syscall_openat,openat)
+
+int __openat(int fd, const char *file, int o_flag, ...)
+{
+ va_list ap;
+ mode_t mode;
+
+ va_start(ap, o_flag);
+ mode = va_arg(ap, int);
+ va_end(ap);
+ return __syscall_openat(fd, file, o_flag, mode);
+}
+
+strong_alias_untyped(__openat,openat)
libc_hidden_def(openat)
#else
/* should add emulation with open() and /proc/self/fd/ ... */