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* child_info.h (child_info_spawn::__stdin): New element.

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(child_info_spawn::__stdin): Ditto.
(CURR_CHILD_INFO_MAGIC): Regenerate.
* dcrt0.cc (check_sanity_and_sync): Minor cleanup.
(child_info_spawn::handle_spawn): Handle new __std* elements by calling
move_fd.
* dtable.cc (dtable::move_fd): Define new function.
* dtable.h (dtable::move_fd): Declare new function.
* fhandler.h (fhandler_pipe::popen_pid): Declare new element.
* fhandler.h (fhandler_pipe::get_popen_pid): Define new function.
* fhandler.h (fhandler_pipe::set_popen_pid): Ditto.
* pipe.cc (fhandler_pipe::fhandler_pipe): Zero popen_pid.
(fhandler_pipe::dup): Ditto.
* spawn.cc (handle): Change second argument to bool.
(spawn_guts): Accept __stdin/__stdout arguments and set them appropriately in
child_info structure and in STARTUPINFO structure.
* syscalls.cc (popen): New cygwin-specific implementation using spawn.
(pclose): Ditto.
* winsup.h (spawn_guts): Accommodate new arguments for spawn_guts.
* fhandler.cc (fhandler_base::set_no_inheritance): Make second arg a bool.
* fhandler.h (fhandler_base::set_no_inheritance): Ditto for declaration.
* child_info.h (child_info::msv_count): Rename from the now-inappropriate
"zero".
(child_info_spawn::filler): Add filler to work around Vista bug.
(child_info_fork::filler): Ditto.
* dcrt0.cc (get_cygwin_startup_info): Remove "zero" check since it is now
always filled out.
* fork.cc (frok::parent): Move ch.zero manipulation to constructor.
* spawn.cc (spawn_guts): Ditto.  Remove _ch wrapper.
* sigproc.cc (child_info::child_info): Initialize starter[].
* shared.cc (shared_info::heap_slop_size): Remove noisy system_printfs.
* shared_info.h (CURR_SHARED_MAGIC): Regenerate.
This commit is contained in:
Christopher Faylor
2006-12-11 18:55:29 +00:00
parent e79c01f84e
commit c16548b2a2
15 changed files with 251 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
winsup/cygwin/spawn.cc
View File

@ -210,7 +210,7 @@ find_exec (const char *name, path_conv& buf, const char *mywinenv,
/* Utility for spawn_guts. */
static HANDLE
handle (int fd, int direction)
handle (int fd, bool writing)
{
HANDLE h;
cygheap_fdget cfd (fd);
@ -219,10 +219,11 @@ handle (int fd, int direction)
h = INVALID_HANDLE_VALUE;
else if (cfd->close_on_exec ())
h = INVALID_HANDLE_VALUE;
else if (direction == 0)
else if (!writing)
h = cfd->get_handle ();
else
h = cfd->get_output_handle ();
return h;
}
@ -259,9 +260,9 @@ do_cleanup (void *args)
}
static int __stdcall
int __stdcall
spawn_guts (const char * prog_arg, const char *const *argv,
const char *const envp[], int mode)
const char *const envp[], int mode, int __stdin, int __stdout)
{
bool rc;
pid_t cygpid;
@ -298,14 +299,7 @@ spawn_guts (const char * prog_arg, const char *const *argv,
pthread_cleanup_push (do_cleanup, (void *) &cleanup);
av newargv;
linebuf one_line;
/* Allocate slightly bigger for call to CreateProcess to accomodate
needs_count_in_si_lpres2. */
struct {
child_info_spawn ch;
char filler[4];
} _ch;
#define ch _ch.ch
child_info_spawn ch;
char *envblock = NULL;
path_conv real_path;
bool reset_sendsig = false;
@ -316,7 +310,8 @@ spawn_guts (const char * prog_arg, const char *const *argv,
cygheap_exec_info *moreinfo;
bool null_app_name = false;
STARTUPINFO si = {0, NULL, NULL, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL};
STARTUPINFO si = {0, NULL, NULL, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL,
NULL, NULL, NULL};
int looped = 0;
HANDLE orig_wr_proc_pipe = NULL;
@ -411,10 +406,13 @@ spawn_guts (const char * prog_arg, const char *const *argv,
pi.dwProcessId = pi.dwThreadId = 0;
si.lpReserved = NULL;
si.lpDesktop = NULL;
/* Set up needed handles for stdio */
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = handle (0, 0); /* Get input handle */
si.hStdOutput = handle (1, 1); /* Get output handle */
si.hStdError = handle (2, 1); /* Get output handle */
si.hStdInput = handle ((__stdin < 0 ? 0 : __stdin), false);
si.hStdOutput = handle ((__stdout < 0 ? 1 : __stdout), true);
si.hStdError = handle (2, true);
si.cb = sizeof (si);
if (!wincap.pty_needs_alloc_console () && newargv.iscui && myself->ctty == -1)
{
@ -483,14 +481,12 @@ spawn_guts (const char * prog_arg, const char *const *argv,
}
ch.set (chtype, real_path.iscygexec ());
ch.moreinfo = moreinfo;
ch.__stdin = __stdin;
ch.__stdout = __stdout;
si.lpReserved2 = (LPBYTE) &ch;
si.cbReserved2 = sizeof (ch);
/* See comment in dcrt0.cc, function get_cygwin_startup_info. */
if (wincap.needs_count_in_si_lpres2 ())
ch.zero[0] = sizeof (ch) / 5;
/* When ruid != euid we create the new process under the current original
account and impersonate in child, this way maintaining the different
effective vs. real ids.