c433f4617f
cygerrno.h. * include/cygwin/config.h (__DYNAMIC_REENT__): Define. * include/cygwin/version.h: Bump API minor version. * cygwin.din: Export __getreent * cygerrno.h: Include errno.h. Fix places where _impure_ptr is used directly to store the errno value. * debug.cc (__set_errno): Ditto. * errno.cc: Remove _RRENT_ONLY define to get errno.cc compiled. * signal.cc: Rename _reent_clib to _REENT throughout. * thread.h (reent_clib): Remove prototype. * thread.cc (reent_clib): Rename reent_clib to __getreent. Return _impure_ptr until MTinterface is initialized. (reent_winsup): Fix a possible SEGV when _r == NULL. Return NULL instead. * MTinterface::fixup_after_fork: Switch reent back to _impure_ptr to keep signal handling running when fork is called from a thread other than the mainthread.
48 lines
938 B
C++
48 lines
938 B
C++
/* fcntl.cc: fcntl syscall
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <stdarg.h>
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#include <unistd.h>
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#include "security.h"
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#include "fhandler.h"
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#include "path.h"
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#include "dtable.h"
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#include "cygerrno.h"
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#include "cygheap.h"
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#include "thread.h"
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extern "C" int
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_fcntl (int fd, int cmd,...)
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{
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void *arg = NULL;
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va_list args;
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int res;
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cygheap_fdget cfd (fd, true);
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if (cfd < 0)
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{
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res = -1;
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goto done;
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}
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va_start (args, cmd);
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arg = va_arg (args, void *);
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if (cmd != F_DUPFD)
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res = cfd->fcntl(cmd, arg);
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else
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res = dup2 (fd, cygheap_fdnew (((int) arg) - 1));
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va_end (args);
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done:
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syscall_printf ("%d = fcntl (%d, %d, %p)", res, fd, cmd, arg);
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return res;
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}
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