0381fec68f
* child_info.h (cygheap_exec_info): Eliminate special fdtab stuff. * spawn.cc (spawn_guts): Ditto. * cygheap.cc (cygheap_init): Initialize fdtab, if appropriate. * cygheap.h (CYGHEAPSIZE): Include size of init_cygheap. (_cmalloc_entry): Include fdtab here. * dtable.h (dtable): Declare/define new methods. * dtable.cc (dtable::vfork_child_fixup): New method. (dtable::fixup_after_exec): Remove unneeded extra arguments. * dcrt0.cc (dll_crt0_1): Ditto. * environ.cc (getwinenv): Use case sensitive comparison. (winenv): Make a copy of environment cache to avoid realloc problems when duplicate environment variables exist in the environment. (From Egor Duda) * net.cc (cygwin_socket): Revert Apr 14 change. * include/sys/file.h: Protect against previous X_OK definition. * passwd.cc: Eliminate passwd_sem throughout. * security.cc: Ditto. * cygwin.din: Export New functions. * passwd.cc (read_etc_passwd): Make race safe. (getpwuid_r): New function. (getpwnam_r): New function.
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
/* fcntl.cc: fcntl syscall
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Copyright 1996, 1997, 1998 Cygnus Solutions.
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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 <fcntl.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <unistd.h>
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygheap.h"
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#include "cygerrno.h"
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#include "thread.h"
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extern "C"
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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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if (cygheap->fdtab.not_open (fd))
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{
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set_errno (EBADF);
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res = -1;
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goto done;
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}
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SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK, "_fcntl");
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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 = dup2 (fd, cygheap->fdtab.find_unused_handle ((int) arg));
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else
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res = cygheap->fdtab[fd]->fcntl(cmd, arg);
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va_end (args);
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ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK,"_fcntl");
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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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