mirror of
git://sourceware.org/git/newlib-cygwin.git
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10dcf7e718
* libc/stdio/fclose.c (fclose): Protect file pointer list when
releasing a file.
* libc/stdio/fcloseall.c (_fcloseall_r): Close all files via
fwalk.
* libc/stdio/fdopen.c (_fdopen_r): Add calls to
_flockfile/_funlockfile.
* libc/stdio/findfp.c: Move __sfp_lock. Change __sfp_lock type
to recursive.
Change __lock_acquire/__lock_release calls for __sfp_lock to
__sfp_lock_acquire/__sfp_lock_release throughout.
(std): Make sure that file lock is only initialized once.
(__sfp): Move _file initialization. Initialize file lock.
(__sfp_lock_acquire): New function.
(__sfp_lock_release): Ditto.
(__fp_lock_all): Remove __sfp_lock_acquire call.
(__fp_unlock_all): Remove __sfp_lock_release call.
* libc/stdio/fopen.c (_fopen_r): Protect file pointer list.
Add calls to _flockfile/_funlockfile. Remove
__lock_init_recursive call.
* libc/stdio/freopen.c (_freopen_r): Protect file pointer list.
* libc/stdio/fwalk.c (__fwalk): New static function.
(_fwalk): Protect file pointer list. Use __fwalk to walk through
file pointers.
* libc/stdio/local.h: Add defines for
__sfp_lock_acquire/__sfp_lock_release when
single threaded. Add function prototypes otherwise.
* libc/stdio64/fdopen64.c (_fdopen64_r): Add calls to
_flockfile/_funlockfile.
* libc/stdio/fopen64.c (_fopen64_r): Protect file pointer list.
Add calls to _flockfile/_funlockfile. Remove
__lock_init_recursive call.
* libc/stdio/freopen64.c (_freopen64_r): Protect file pointer
list.
132 lines
2.5 KiB
C
132 lines
2.5 KiB
C
/*
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FUNCTION
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<<fdopen>>---turn open file into a stream
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INDEX
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fdopen
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INDEX
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_fdopen_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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FILE *fdopen(int <[fd]>, const char *<[mode]>);
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FILE *_fdopen_r(void *<[reent]>,
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int <[fd]>, const char *<[mode]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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FILE *fdopen(<[fd]>, <[mode]>)
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int <[fd]>;
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char *<[mode]>;
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FILE *_fdopen_r(<[reent]>, <[fd]>, <[mode]>)
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char *<[reent]>;
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int <[fd]>;
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char *<[mode]>);
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DESCRIPTION
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<<fdopen>> produces a file descriptor of type <<FILE *>>, from a
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descriptor for an already-open file (returned, for example, by the
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system subroutine <<open>> rather than by <<fopen>>).
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The <[mode]> argument has the same meanings as in <<fopen>>.
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RETURNS
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File pointer or <<NULL>>, as for <<fopen>>.
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PORTABILITY
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<<fdopen>> is ANSI.
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*/
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#include <sys/types.h>
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#include <sys/fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include "local.h"
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#include <_syslist.h>
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extern int __sflags ();
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FILE *
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_DEFUN (_fdopen_r, (ptr, fd, mode),
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struct _reent *ptr _AND
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int fd _AND
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_CONST char *mode)
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{
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register FILE *fp;
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int flags, oflags;
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#ifdef HAVE_FCNTL
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int fdflags, fdmode;
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#endif
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if ((flags = __sflags (ptr, mode, &oflags)) == 0)
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return 0;
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/* make sure the mode the user wants is a subset of the actual mode */
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#ifdef HAVE_FCNTL
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if ((fdflags = _fcntl_r (ptr, fd, F_GETFL, 0)) < 0)
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return 0;
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fdmode = fdflags & O_ACCMODE;
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if (fdmode != O_RDWR && (fdmode != (oflags & O_ACCMODE)))
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{
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ptr->_errno = EBADF;
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return 0;
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}
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#endif
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if ((fp = __sfp (ptr)) == 0)
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return 0;
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_flockfile(fp);
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fp->_flags = flags;
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/*
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* If opened for appending, but underlying descriptor
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* does not have O_APPEND bit set, assert __SAPP so that
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* __swrite() will lseek to end before each write.
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*/
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if ((oflags & O_APPEND)
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#ifdef HAVE_FCNTL
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&& !(fdflags & O_APPEND)
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#endif
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)
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fp->_flags |= __SAPP;
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fp->_file = fd;
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fp->_cookie = (_PTR) fp;
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#undef _read
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#undef _write
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#undef _seek
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#undef _close
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fp->_read = __sread;
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fp->_write = __swrite;
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fp->_seek = __sseek;
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fp->_close = __sclose;
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#ifdef __SCLE
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/* Explicit given mode results in explicit setting mode on fd */
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if (oflags & O_BINARY)
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setmode(fp->_file, O_BINARY);
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else if (oflags & O_TEXT)
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setmode(fp->_file, O_TEXT);
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if (__stextmode(fp->_file))
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fp->_flags |= __SCLE;
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#endif
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_funlockfile(fp);
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return fp;
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}
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#ifndef _REENT_ONLY
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FILE *
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_DEFUN (fdopen, (fd, mode),
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int fd _AND
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_CONST char *mode)
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{
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return _fdopen_r (_REENT, fd, mode);
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}
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#endif
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