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Comment:Updated to use "/proc/self/exe" rather than "/proc/<pid>/exe"

Updated to check for "/proc/curproc/file" (FreeBSD)

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SHA1: 013d6b36f4f4223a937b04b8a872164a9ec92545
User & Date: rkeene on 2010-09-26 04:50:35
Other Links: manifest | tags
Context
2010-09-26
04:50
Added first draft of kitdll check-in: 029b69f827 user: rkeene tags: trunk
04:50
Updated to use "/proc/self/exe" rather than "/proc/<pid>/exe"

Updated to check for "/proc/curproc/file" (FreeBSD) check-in: 013d6b36f4 user: rkeene tags: trunk

04:50
Updated to remove kitdll from releases since it is currently incomplete check-in: 914a6c9397 user: rkeene tags: trunk
Changes
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Modified kitsh/buildsrc/kitsh-0.0/configure.ac from [e12a8b84bb] to [d545ae6633].

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AC_CHECK_FUNCS(Tcl_SetStartupScript TclSetStartupScriptPath)
dnl Check for the ability to get the current system encoding
AC_CHECK_FUNCS(Tcl_GetEncodingNameFromEnvironment Tcl_SetSystemEncoding)
LIBS="${SAVE_LIBS}"

dnl Check for optional headers
AC_HEADER_STDC
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(unistd.h string.h strings.h)

dnl Check for optional system calls
AC_CHECK_FUNCS(readlink)

dnl Check for acceptable dladdr so we can find ourselves on Solaris
DC_CHECK_FOR_ACCEPTABLE_DLADDR
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Modified kitsh/buildsrc/kitsh-0.0/kitInit.c from [534a43d0fd] to [4d11547632].

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#endif /* MB_TASKMODAL */

#include "tclInt.h"

#ifdef HAVE_UNISTD_H
#  include <unistd.h>
#endif
#ifdef HAVE_STRING_H
#  include <string.h>
#endif
#ifdef HAVE_STRINGS_H
#  include <strings.h>
#endif

/* For dladdr() and Dl_info */
#ifdef HAVE_DLFCN_H
#  include <dlfcn.h>
#endif

#if defined(HAVE_TCL_GETENCODINGNAMEFROMENVIRONMENT) && defined(HAVE_TCL_SETSYSTEMENCODING)
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static void FindAndSetExecName(Tcl_Interp *interp) {
	int len = 0;
	Tcl_Obj *execNameObj;
	Tcl_Obj *lobjv[1];
#ifdef HAVE_READLINK
	ssize_t readlink_ret;
	char procpath[4096];
	char exe_buf[4096];
	int snprintf_ret;
#endif /* HAVE_READLINK */
#ifdef HAVE_ACCEPTABLE_DLADDR
	Dl_info syminfo;
	int dladdr_ret;
#endif /* HAVE_ACCEPTABLE_DLADDR */ 

#ifdef HAVE_READLINK
	if (Tcl_GetNameOfExecutable() == NULL) {
		readlink_ret = readlink("/proc/self/exe", exe_buf, sizeof(exe_buf) - 1);
		snprintf_ret = snprintf(procpath, sizeof(procpath), "/proc/%lu/exe", (unsigned long) getpid());
		if (snprintf_ret < sizeof(procpath)) {
			readlink_ret = readlink(procpath, exe_buf, sizeof(exe_buf) - 1);

		if (readlink_ret > 0 && readlink_ret < (sizeof(exe_buf) - 1)) {
			exe_buf[readlink_ret] = '\0';

			SetExecName(interp, exe_buf);

			return;
		}
	}

	if (Tcl_GetNameOfExecutable() == NULL) {
		readlink_ret = readlink("/proc/curproc/file", exe_buf, sizeof(exe_buf) - 1);

			if (readlink_ret > 0 && readlink_ret < (sizeof(exe_buf) - 1)) {
				exe_buf[readlink_ret] = '\0';
		if (readlink_ret > 0 && readlink_ret < (sizeof(exe_buf) - 1)) {
			exe_buf[readlink_ret] = '\0';

			if (strcmp(exe_buf, "unknown") != 0) {
				SetExecName(interp, exe_buf);

				return;
			}
		}
	}
#endif /* HAVE_READLINK */
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