[patch/ob] openat and friends for Cygwin
Corinna Vinschen
vinschen@redhat.com
Wed Apr 23 23:12:00 GMT 2008
Hi,
I appied the below patch as obvious. It adds definitions and declarations
for the openat family of functions, but only for Cygwin for now.
The patch also contains a single patch which affects all target, but is
obvious as well. The declaration of readlink was not POSIX conformant.
It doesn't return int but ssize_t and the type of the forth parameter
(buflen) is not int but size_t.
Corinna
* libc/include/stdio.h (renameat): Declare for Cygwin.
(symlinkat): Ditto.
* libc/include/sys/unistd.h (readlink): Align declaration to POSIX.
(faccessat): Declare for Cygwin.
(fchownat): Ditto.
(linkat): Ditto.
(readlinkat): Ditto.
* libc/include/sys/_default_fcntl.h (AT_FDCWD): Define for Cygwin.
(AT_EACCESS): Ditto.
(AT_SYMLINK_NOFOLLOW): Ditto.
(AT_SYMLINK_FOLLOW): Ditto.
(AT_REMOVEDIR): Ditto.
(futimesat): Declare for Cygwin.
(openat): Ditto.
(unlinkat): Ditto.
* libc/include/sys/stat.h (fchmodat): Ditto.
(fstatat): Ditto.
(mkdirat): Ditto.
(mkfifoat): Ditto.
(mknodat): Ditto.
Index: libc/include/stdio.h
===================================================================
RCS file: /cvs/src/src/newlib/libc/include/stdio.h,v
retrieving revision 1.48
diff -u -p -r1.48 stdio.h
--- libc/include/stdio.h 2 Aug 2007 20:23:06 -0000 1.48
+++ libc/include/stdio.h 23 Apr 2008 11:06:12 -0000
@@ -339,7 +339,10 @@ FILE * _EXFUN(fmemopen, (void *, size_t,
/* getdelim - see __getdelim for now */
/* getline - see __getline for now */
FILE * _EXFUN(open_memstream, (char **, size_t *));
-/* renameat - unimplemented for now */
+#if defined (__CYGWIN__)
+int _EXFUN(renameat, (int, const char *, int, const char *));
+int _EXFUN(symlinkat, (const char *, int, const char *));
+#endif
int _EXFUN(vdprintf, (int, const char *, __VALIST)
_ATTRIBUTE ((__format__ (__printf__, 2, 0))));
# endif
Index: libc/include/sys/_default_fcntl.h
===================================================================
RCS file: /cvs/src/src/newlib/libc/include/sys/_default_fcntl.h,v
retrieving revision 1.1
diff -u -p -r1.1 _default_fcntl.h
--- libc/include/sys/_default_fcntl.h 19 Dec 2007 18:49:17 -0000 1.1
+++ libc/include/sys/_default_fcntl.h 23 Apr 2008 11:06:12 -0000
@@ -131,6 +131,17 @@ extern "C" {
#define F_UNLKSYS 4 /* remove remote locks for a given system */
#endif /* !_POSIX_SOURCE */
+#ifdef __CYGWIN__
+/* Special descriptor value to denote the cwd in calls to openat(2) etc. */
+#define AT_FDCWD -2
+
+/* Flag values for faccessat2) et al. */
+#define AT_EACCESS 1
+#define AT_SYMLINK_NOFOLLOW 2
+#define AT_SYMLINK_FOLLOW 4
+#define AT_REMOVEDIR 8
+#endif
+
/*#include <sys/stdtypes.h>*/
#ifndef __CYGWIN__
@@ -166,6 +177,11 @@ struct eflock {
extern int open _PARAMS ((const char *, int, ...));
extern int creat _PARAMS ((const char *, mode_t));
extern int fcntl _PARAMS ((int, int, ...));
+#ifdef __CYGWIN__
+extern int futimesat _PARAMS ((int, const char *, const struct timeval *));
+extern int openat _PARAMS ((int, const char *, int, ...));
+extern int unlinkat _PARAMS ((int, const char *, int));
+#endif
/* Provide _<systemcall> prototypes for functions provided by some versions
of newlib. */
Index: libc/include/sys/stat.h
===================================================================
RCS file: /cvs/src/src/newlib/libc/include/sys/stat.h,v
retrieving revision 1.17
diff -u -p -r1.17 stat.h
--- libc/include/sys/stat.h 20 Jun 2007 17:30:58 -0000 1.17
+++ libc/include/sys/stat.h 23 Apr 2008 11:06:12 -0000
@@ -129,6 +129,14 @@ int _EXFUN(lstat,( const char *__path, s
int _EXFUN(mknod,( const char *__path, mode_t __mode, dev_t __dev ));
#endif
+#if defined (__CYGWIN__)
+int _EXFUN(fchmodat, (int, const char *, mode_t, int));
+int _EXFUN(fstatat, (int, const char *, struct __stat64 *, int));
+int _EXFUN(mkdirat, (int, const char *, mode_t));
+int _EXFUN(mkfifoat, (int, const char *, mode_t));
+int _EXFUN(mknodat, (int, const char *, mode_t, dev_t));
+#endif
+
/* Provide prototypes for most of the _<systemcall> names that are
provided in newlib for some compilers. */
#ifdef _COMPILING_NEWLIB
Index: libc/include/sys/unistd.h
===================================================================
RCS file: /cvs/src/src/newlib/libc/include/sys/unistd.h,v
retrieving revision 1.65
diff -u -p -r1.65 unistd.h
--- libc/include/sys/unistd.h 27 Mar 2008 09:55:05 -0000 1.65
+++ libc/include/sys/unistd.h 23 Apr 2008 11:06:12 -0000
@@ -46,6 +46,9 @@ int _EXFUN(execlp, (const char *__fi
int _EXFUN(execv, (const char *__path, char * const __argv[] ));
int _EXFUN(execve, (const char *__path, char * const __argv[], char * const __envp[] ));
int _EXFUN(execvp, (const char *__file, char * const __argv[] ));
+#if defined(__CYGWIN__)
+int _EXFUN(faccessat, (int __dirfd, const char *__path, int __mode, int __flags));
+#endif
#if defined(__CYGWIN__) || defined(__rtems__) || defined(__SPU__)
int _EXFUN(fchdir, (int __fildes));
#endif
@@ -53,6 +56,9 @@ int _EXFUN(fchmod, (int __fildes, mo
#if !defined(__INSIDE_CYGWIN__)
int _EXFUN(fchown, (int __fildes, uid_t __owner, gid_t __group ));
#endif
+#if defined(__CYGWIN__)
+int _EXFUN(fchownat, (int __dirfd, const char *__path, uid_t __owner, gid_t __group, int __flags));
+#endif
pid_t _EXFUN(fork, (void ));
long _EXFUN(fpathconf, (int __fd, int __name ));
int _EXFUN(fsync, (int __fd));
@@ -99,6 +105,9 @@ int _EXFUN(isatty, (int __fildes ));
int _EXFUN(lchown, (const char *__path, uid_t __owner, gid_t __group ));
#endif
int _EXFUN(link, (const char *__path1, const char *__path2 ));
+#if defined(__CYGWIN__)
+int _EXFUN(linkat, (int __dirfd1, const char *__path1, int __dirfd2, const char *__path2, int __flags ));
+#endif
int _EXFUN(nice, (int __nice_value ));
#if !defined(__INSIDE_CYGWIN__)
off_t _EXFUN(lseek, (int __fildes, off_t __offset, int __whence ));
@@ -226,7 +235,10 @@ void _EXFUN(sync, (void));
int _EXFUN(sync, (void));
#endif
-int _EXFUN(readlink, (const char *__path, char *__buf, int __buflen));
+ssize_t _EXFUN(readlink, (const char *__path, char *__buf, size_t __buflen));
+#if defined(__CYGWIN__)
+ssize_t _EXFUN(readlinkat, (int __dirfd1, const char *__path, char *__buf, size_t __buflen));
+#endif
int _EXFUN(symlink, (const char *__name1, const char *__name2));
#define F_OK 0
--
Corinna Vinschen
Cygwin Project Co-Leader
Red Hat
More information about the Newlib
mailing list