* external.cc (cygwin_internal): Implement CW_CMDLINE.

* pinfo.h (SIGCOMMUNE): New signal type.
(commune_result): New structure for commune functions.
(picom): New enum for commune functions.
(_pinfo::hello_pid): New.  Pid who's communicating with me.
(_pinfo::tothem): New.  Handle of communicating pipe.
(_pinfo::fromthem): Ditto.
(_pinfo::commune_recv): Declare.
(_pinfo::commune_send): Declare.
(_pinfo::alive): Declare.
(_pinfo::cmdline): Declare.
(_pinfo::lock): Declare.
* pinfo.cc (set_myself): Initialize new _pinfo lock.
(_pinfo::alive): Define.  Determines if process still exists.
(_pinfo::commune_recv): Define.  Receive info from another cooperating process.
(_pinfo::commune_send): Define.  Send info to another cooperating process.
(_pinfo::cmdline): Define.  Determine command line of a given process.
* include/sys/cygwin.h (CW_CMDLINE): Define.
*sigproc.cc (talktome): Communicate with any processes who want to talk to me.
(wait_sig): Honor __SIGCOMMUNE.
* fhandler.cc (fhandler_virtual::fixup_after_exec): Declare.
* fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc
since buffers don't need to be propagated to subprocesses.
* fhandler_registry.cc: Ditto.
* fhandler_virtual.cc: Ditto.
(fhandler_virtual::fixup_after_exec): Define.
* fhandler_process.cc: Ditto for malloc/free/realloc.
(process_listin): Add "cmdline".
(fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE.
* miscfuncs.cc (isalpha_array): New array populated with xor values for alpha
characters to switch from one case to another.
* string.h (cygwin_strcasematch): New asm implementation of case match.
* string.h (cygwin_nstrcasematch): New asm implementation of counted case
match.

1 files changed, 18 insertions, 14 deletions

diff --git a/winsup/cygwin/fhandler_process.cc b/winsup/cygwin/fhandler_process.cc
index 7cbfaa3cd..a9e8d2f0c 100644
--- a/winsup/cygwin/fhandler_process.cc
+++ b/winsup/cygwin/fhandler_process.cc
@@ -42,6 +42,7 @@ static const int PROCESS_SID = 10;
 static const int PROCESS_CTTY = 11;
 static const int PROCESS_STAT = 12;
 static const int PROCESS_STATM = 13;
+static const int PROCESS_CMDLINE = 14;
 
 static const char * const process_listing[] =
 {
@@ -59,6 +60,7 @@ static const char * const process_listing[] =
   "ctty",
   "stat",
   "statm",
+  "cmdline",
   NULL
 };
 
@@ -264,8 +266,7 @@ fhandler_process::fill_filebuf ()
     case PROCESS_CTTY:
     case PROCESS_PPID:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = 40);
+	filebuf = (char *) realloc (filebuf, bufalloc = 40);
 	int num;
 	switch (fileid)
 	  {
@@ -295,10 +296,18 @@ fhandler_process::fill_filebuf ()
 	filesize = strlen (filebuf);
 	break;
       }
+    case PROCESS_CMDLINE:
+      {
+	if (filebuf)
+	  free (filebuf);
+	filebuf = p->cmdline (filesize);
+	if (!*filebuf)
+	  filebuf = strdup ("<defunct>");
+	break;
+      }
     case PROCESS_EXENAME:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = MAX_PATH);
+	filebuf = (char *) realloc (filebuf, bufalloc = MAX_PATH);
 	if (p->process_state & (PID_ZOMBIE | PID_EXITED))
 	  strcpy (filebuf, "<defunct>");
 	else
@@ -317,8 +326,7 @@ fhandler_process::fill_filebuf ()
       }
     case PROCESS_WINPID:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = 40);
+	filebuf = (char *) realloc (filebuf, bufalloc = 40);
 	__small_sprintf (filebuf, "%d\n", p->dwProcessId);
 	filesize = strlen (filebuf);
 	break;
@@ -326,8 +334,7 @@ fhandler_process::fill_filebuf ()
     case PROCESS_WINEXENAME:
       {
 	int len = strlen (p->progname);
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = (len + 2));
+	filebuf = (char *) realloc (filebuf, bufalloc = (len + 2));
 	strcpy (filebuf, p->progname);
 	filebuf[len] = '\n';
 	filesize = len + 1;
@@ -335,22 +342,19 @@ fhandler_process::fill_filebuf ()
       }
     case PROCESS_STATUS:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = 2048);
+	filebuf = (char *) realloc (filebuf, bufalloc = 2048);
 	filesize = format_process_status (*p, filebuf, bufalloc);
 	break;
       }
     case PROCESS_STAT:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = 2048);
+	filebuf = (char *) realloc (filebuf, bufalloc = 2048);
 	filesize = format_process_stat (*p, filebuf, bufalloc);
 	break;
       }
     case PROCESS_STATM:
       {
-	if (!filebuf)
-	  filebuf = (char *) cmalloc (HEAP_BUF, bufalloc = 2048);
+	filebuf = (char *) realloc (filebuf, bufalloc = 2048);
 	filesize = format_process_statm (*p, filebuf, bufalloc);
 	break;
       }