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authorPeter S. Mazinger <ps.m@gmx.net>2011-04-21 22:13:29 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2012-06-15 14:00:40 +0200
commitc4b9ff234e2d18ee51f652467986ed0102667737 (patch)
tree07009e774cc20368dbfdc9784db25906a3a26f9b
parent15f25e33d983dabb1b6df202cf09f9f2b39c02f2 (diff)
open.c: add cancellation using cancel.h
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--include/fcntl.h4
-rw-r--r--libc/sysdeps/linux/common/open.c31
2 files changed, 22 insertions, 13 deletions
diff --git a/include/fcntl.h b/include/fcntl.h
index f2b46290c..64c8e20d3 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -97,6 +97,10 @@ libc_hidden_proto(fcntl64)
#ifndef __USE_FILE_OFFSET64
extern int open (__const char *__file, int __oflag, ...) __nonnull ((1));
libc_hidden_proto(open)
+# ifdef _LIBC
+extern int __open2_nocancel(const char *, int) __nonnull ((1)) attribute_hidden;
+extern int __open_nocancel(const char *, int, mode_t) __nonnull ((1)) attribute_hidden;
+# endif
#else
# ifdef __REDIRECT
extern int __REDIRECT (open, (__const char *__file, int __oflag, ...), open64)
diff --git a/libc/sysdeps/linux/common/open.c b/libc/sysdeps/linux/common/open.c
index 9fb694d22..a72e84d0b 100644
--- a/libc/sysdeps/linux/common/open.c
+++ b/libc/sysdeps/linux/common/open.c
@@ -8,15 +8,17 @@
*/
#include <sys/syscall.h>
-#include <stdlib.h>
-#include <stdarg.h>
#include <fcntl.h>
-#include <string.h>
-#include <sys/param.h>
+#include <stdarg.h>
+#include <cancel.h>
#define __NR___syscall_open __NR_open
-static __inline__ _syscall3(int, __syscall_open, const char *, file,
- int, flags, __kernel_mode_t, mode)
+static __always_inline _syscall3(int, __syscall_open, const char *, file,
+ int, flags, __kernel_mode_t, mode)
+strong_alias_untyped(__syscall_open,__NC(open))
+
+#define __NR___open2_nocancel __NR_open
+_syscall2(int, __NC(open2), const char *, file, int, flags)
int open(const char *file, int oflag, ...)
{
@@ -29,11 +31,14 @@ int open(const char *file, int oflag, ...)
va_end(arg);
}
- return __syscall_open(file, oflag, mode);
-}
-#ifndef __LINUXTHREADS_OLD__
-libc_hidden_def(open)
-#else
-libc_hidden_weak(open)
-strong_alias(open,__libc_open)
+ if (SINGLE_THREAD_P)
+ return __NC(open)(file, oflag, mode);
+#ifdef __NEW_THREADS
+ int oldtype = LIBC_CANCEL_ASYNC ();
+ int result = __NC(open)(file, oflag, mode);
+ LIBC_CANCEL_RESET (oldtype);
+ return result;
#endif
+}
+lt_strong_alias(open)
+lt_libc_hidden(open)