(read, pread, pread64, readlink, getcwd, getwd): Change macros into extern inline functions. (__read_alias, __pread_alias, __pread64_alias, __readlink_alias, __getcwd_alias, __getwd_alias): New prototypes.

1 files changed, 74 insertions, 32 deletions

diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h
index 26cb6641e9..6cf95acc0b 100644
--- a/posix/bits/unistd.h
+++ b/posix/bits/unistd.h
@@ -23,37 +23,58 @@
 
 extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes,
 			   size_t __buflen) __wur;
-#define read(fd, buf, nbytes) \
-  (__bos0 (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf))	      \
-   ? __read_chk (fd, buf, nbytes, __bos0 (buf))				      \
-   : read (fd, buf, nbytes))
+extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf,
+					  size_t __nbytes), read) __wur;
+
+extern __inline __wur ssize_t
+read (int __fd, void *__buf, size_t __nbytes)
+{
+  if (__bos0 (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
+    return __read_chk (__fd, __buf, __nbytes, __bos0 (__buf));
+  return __read_alias (__fd, __buf, __nbytes);
+}
 
 #ifdef __USE_UNIX98
 extern ssize_t __pread_chk (int __fd, void *__buf, size_t __nbytes,
 			    __off_t __offset, size_t __bufsize) __wur;
 extern ssize_t __pread64_chk (int __fd, void *__buf, size_t __nbytes,
 			      __off64_t __offset, size_t __bufsize) __wur;
+extern ssize_t __REDIRECT (__pread_alias,
+			   (int __fd, void *__buf, size_t __nbytes,
+			    __off_t __offset), pread) __wur;
+extern ssize_t __REDIRECT (__pread64_alias,
+			   (int __fd, void *__buf, size_t __nbytes,
+			    __off64_t __offset), pread64) __wur;
 # ifndef __USE_FILE_OFFSET64
-#  define pread(fd, buf, nbytes, offset) \
-  (__bos0 (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf))	      \
-   ? __pread64_chk (fd, buf, nbytes, offset, __bos0 (buf))		      \
-   : pread64 (fd, buf, nbytes, offset))
+extern __inline __wur ssize_t
+pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
+{
+  if (__bos0 (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
+    return __pread_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
+  return __pread_alias (__fd, __buf, __nbytes, __offset);
+}
 # else
-#  define pread(fd, buf, nbytes, offset) \
-  (__bos0 (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf))	      \
-   ? __pread_chk (fd, buf, nbytes, offset, __bos0 (buf))		      \
-   : pread (fd, buf, nbytes, offset))
+extern __inline __wur ssize_t
+pread (int __fd, void *__buf, size_t __nbytes, __off_t __offset)
+{
+  if (__bos0 (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
+    return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
+  return __pread64_alias (__fd, __buf, __nbytes, __offset);
+}
 # endif
 
 # ifdef __USE_LARGEFILE64
-#  define pread64(fd, buf, nbytes, offset) \
-  (__bos0 (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (nbytes) || (nbytes) > __bos0 (buf))	      \
-   ? __pread64_chk (fd, buf, nbytes, offset, __bos0 (buf))		      \
-   : pread64 (fd, buf, nbytes, offset))
+extern __inline __wur ssize_t
+pread64 (int __fd, void *__buf, size_t __nbytes, __off64_t __offset)
+{
+  if (__bos0 (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__nbytes) || __nbytes > __bos0 (__buf)))
+    return __pread64_chk (__fd, __buf, __nbytes, __offset, __bos0 (__buf));
+  return __pread64_alias (__fd, __buf, __nbytes, __offset);
+}
 # endif
 #endif
 
@@ -62,23 +83,44 @@ extern int __readlink_chk (__const char *__restrict __path,
 			   char *__restrict __buf, size_t __len,
 			   size_t __buflen)
      __THROW __nonnull ((1, 2)) __wur;
-# define readlink(path, buf, len) \
-  (__bos (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (len) || (len) > __bos (buf))		      \
-   ? __readlink_chk (path, buf, len, __bos (buf))			      \
-   : readlink (path, buf, len))
+extern int __REDIRECT_NTH (__readlink_alias,
+			   (__const char *__restrict __path,
+			    char *__restrict __buf, size_t __len), readlink)
+     __nonnull ((1, 2)) __wur;
+extern __inline __nonnull ((1, 2)) __wur int
+__NTH (readlink (__const char *__restrict __path, char *__restrict __buf,
+		 size_t __len))
+{
+  if (__bos (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__len) || __len > __bos (__buf)))
+    return __readlink_chk (__path, __buf, __len, __bos (__buf));
+  return __readlink_alias (__path, __buf, __len);
+}
 #endif
 
 extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen)
      __THROW __wur;
-#define getcwd(buf, size) \
-  (__bos (buf) != (size_t) -1						      \
-   && (!__builtin_constant_p (size) || (size) > __bos (buf))		      \
-   ? __getcwd_chk (buf, size, buflen) : getcwd (buf, size))
+extern char *__REDIRECT_NTH (__getcwd_alias,
+			     (char *__buf, size_t __size), getcwd) __wur;
+extern __inline __wur char *
+__NTH (getcwd (char *__buf, size_t __size))
+{
+  if (__bos (__buf) != (size_t) -1
+      && (!__builtin_constant_p (__size) || __size > __bos (__buf)))
+    return __getcwd_chk (__buf, __size, __bos (__buf));
+  return __getcwd_alias (__buf, __size);
+}
 
 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 extern char *__getwd_chk (char *__buf, size_t buflen)
-     __THROW __nonnull ((1)) __attribute_deprecated__ __wur;
-#define getwd(buf) \
-  (__bos (buf) != (size_t) -1 ? __getwd_chk (buf, buflen) : getwd (buf))
+     __THROW __nonnull ((1)) __wur;
+extern char *__REDIRECT_NTH (__getwd_alias, (char *__buf), getwd)
+     __nonnull ((1)) __wur;
+extern __inline __nonnull ((1)) __attribute_deprecated__ __wur char *
+__NTH (getwd (char *__buf))
+{
+  if (__bos (__buf) != (size_t) -1)
+    return __getwd_chk (__buf, __bos (__buf));
+  return __getwd_alias (__buf);
+}
 #endif