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secur32: Avoid the close-on-exec race with pipe() on kernels that support pipe2().

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This commit is contained in:
Alexandre Julliard 2009-07-01 12:14:08 +02:00
parent 887af61219
commit a6b05ea96c
1 changed files with 19 additions and 11 deletions
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30
dlls/secur32/dispatcher.c
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@ -19,6 +19,7 @@
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
@ -57,16 +58,28 @@ SECURITY_STATUS fork_helper(PNegoHelper *new_helper, const char *prog,
}
TRACE("\n");
if( pipe(pipe_in) < 0 )
#ifdef HAVE_PIPE2
if (pipe2( pipe_in, O_CLOEXEC ) < 0 )
#endif
{
return SEC_E_INTERNAL_ERROR;
if( pipe(pipe_in) < 0 ) return SEC_E_INTERNAL_ERROR;
fcntl( pipe_in[0], F_SETFD, FD_CLOEXEC );
fcntl( pipe_in[1], F_SETFD, FD_CLOEXEC );
}
if( pipe(pipe_out) < 0 )
#ifdef HAVE_PIPE2
if (pipe2( pipe_out, O_CLOEXEC ) < 0 )
#endif
{
close(pipe_in[0]);
close(pipe_in[1]);
return SEC_E_INTERNAL_ERROR;
if( pipe(pipe_out) < 0 )
{
close(pipe_in[0]);
close(pipe_in[1]);
return SEC_E_INTERNAL_ERROR;
}
fcntl( pipe_out[0], F_SETFD, FD_CLOEXEC );
fcntl( pipe_out[1], F_SETFD, FD_CLOEXEC );
}
if (!(helper = HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper))))
{
close(pipe_in[0]);
@ -91,9 +104,6 @@ SECURITY_STATUS fork_helper(PNegoHelper *new_helper, const char *prog,
if(helper->helper_pid == 0)
{
/* We're in the child now */
close(0);
close(1);
dup2(pipe_out[0], 0);
close(pipe_out[0]);
close(pipe_out[1]);
@ -125,10 +135,8 @@ SECURITY_STATUS fork_helper(PNegoHelper *new_helper, const char *prog,
helper->crypt.ntlm2.recv_sign_key = NULL;
helper->crypt.ntlm2.recv_seal_key = NULL;
helper->pipe_in = pipe_in[0];
fcntl( pipe_in[0], F_SETFD, 1 );
close(pipe_in[1]);
helper->pipe_out = pipe_out[1];
fcntl( pipe_out[1], F_SETFD, 1 );
close(pipe_out[0]);
}