Check-in [6af0168ed8]
Overview
Comment:Updated to support unthreaded Tcl and fixed a memory leak with home directory determination
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Files: files | file ages | folders
SHA1: 6af0168ed827e5774e23d29cc8b9ea61da332cf4
User & Date: rkeene on 2014-11-14 21:46:19
Other Links: manifest | tags
Context
2014-11-15
16:46
Added more debugging, renamed appfs_terminate_interp for with more accurate name, fixed FUSE read/write to use pread/pwrite and return no short reads as is required by FUSE, added call to Tcl_FinalizeThread() on thread termination check-in: d5bfe6710c user: rkeene tags: trunk
2014-11-14
21:46
Updated to support unthreaded Tcl and fixed a memory leak with home directory determination check-in: 6af0168ed8 user: rkeene tags: trunk
21:44
Updated to use TCL_DEFS from tclConfig.sh check-in: 24908ac300 user: rkeene tags: trunk
Changes

Modified appfsd.c from [b7668e46f2] to [1768754e26].

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/*
 * Global variables for AppFS caching
 */
pthread_mutex_t appfs_path_info_cache_mutex = PTHREAD_MUTEX_INITIALIZER;
int appfs_path_info_cache_size = 8209;
struct appfs_pathinfo *appfs_path_info_cache = NULL;














/*
 * Global variables for AppFS Tcl Interpreter restarting
 */
int interp_reset_key = 0;

/*
 * AppFS Path Type:  Describes the type of path a given file is







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/*
 * Global variables for AppFS caching
 */
pthread_mutex_t appfs_path_info_cache_mutex = PTHREAD_MUTEX_INITIALIZER;
int appfs_path_info_cache_size = 8209;
struct appfs_pathinfo *appfs_path_info_cache = NULL;

#ifndef TCL_THREADS
/*
 * Handle unthreaded Tcl
 */
pthread_mutex_t appfs_tcl_big_global_lock = PTHREAD_MUTEX_INITIALIZER;
#define appfs_call_libtcl_enter pthread_mutex_lock(&appfs_tcl_big_global_lock);
#define appfs_call_libtcl_exit pthread_mutex_unlock(&appfs_tcl_big_global_lock);
#else
#define appfs_call_libtcl_enter /**/
#define appfs_call_libtcl_exit /**/
#endif
#define appfs_call_libtcl(x...) appfs_call_libtcl_enter x appfs_call_libtcl_exit

/*
 * Global variables for AppFS Tcl Interpreter restarting
 */
int interp_reset_key = 0;

/*
 * AppFS Path Type:  Describes the type of path a given file is
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/*
 * Create a new Tcl interpreter and completely initialize it
 */
static Tcl_Interp *appfs_create_TclInterp(char **error_string) {
	Tcl_Interp *interp;
	int tcl_ret;


	APPFS_DEBUG("Creating new Tcl interpreter for TID = 0x%llx", (unsigned long long) pthread_self());


	interp = Tcl_CreateInterp();

	if (interp == NULL) {
		fprintf(stderr, "Unable to create Tcl Interpreter.  Aborting.\n");

		if (error_string) {
			*error_string = strdup("Unable to create Tcl interpreter.");
		}

		return(NULL);
	}

	Tcl_Preserve(interp);


	tcl_ret = Tcl_Init(interp);

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl.  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}


	tcl_ret = Tcl_Eval(interp, "package ifneeded sha1 1.0 [list load {} sha1]");

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl SHA1.  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}


	tcl_ret = Tcl_Eval(interp, "package ifneeded appfsd 1.0 [list load {} appfsd]");

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS Package.  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}

	/*
	 * Load "pki.tcl" in the same way as appfsd.tcl (see below)
	 */

	tcl_ret = Tcl_Eval(interp, ""
#include "pki.tcl.h"
	"");

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl PKI.  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}

	/*
	 * Load the "appfsd.tcl" script, which is "compiled" into a C header
	 * so that it does not need to exist on the filesystem and can be
	 * directly evaluated.
	 */

	tcl_ret = Tcl_Eval(interp, ""
#include "appfsd.tcl.h"
	"");

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS script.  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}

	/*
	 * Set global variables from C to Tcl
	 */

	if (Tcl_SetVar(interp, "::appfs::cachedir", appfs_cachedir, TCL_GLOBAL_ONLY) == NULL) {


		fprintf(stderr, "Unable to set cache directory.  This should never fail.\n");

		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}

	/*
	 * Initialize the "appfsd.tcl" environment, which must be done after
	 * global variables are set.
	 */

	tcl_ret = Tcl_Eval(interp, "::appfs::init");

	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS script (::appfs::init).  Aborting.\n");

		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));


		if (error_string) {

			*error_string = strdup(Tcl_GetStringResult(interp));

		}

		Tcl_Release(interp);

		APPFS_DEBUG("Terminating Tcl interpreter.");

		Tcl_DeleteInterp(interp);

		return(NULL);
	}

	/*
	 * Hide some Tcl commands that we do not care to use and which may
	 * slow down run-time operations.
	 */

	Tcl_HideCommand(interp, "auto_load_index", "auto_load_index");
	Tcl_HideCommand(interp, "unknown", "unknown");
	Tcl_HideCommand(interp, "exit", "exit");


	/*
	 * Release the hold we have on the interpreter so that it may be
	 * deleted if needed
	 */
	Tcl_Release(interp);

	/*
	 * Return the completely initialized interpreter
	 */
	return(interp);
}








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/*
 * Create a new Tcl interpreter and completely initialize it
 */
static Tcl_Interp *appfs_create_TclInterp(char **error_string) {
	Tcl_Interp *interp;
	int tcl_ret;
	const char *tcl_setvar_ret;

	APPFS_DEBUG("Creating new Tcl interpreter for TID = 0x%llx", (unsigned long long) pthread_self());

	appfs_call_libtcl(
	interp = Tcl_CreateInterp();
	)
	if (interp == NULL) {
		fprintf(stderr, "Unable to create Tcl Interpreter.  Aborting.\n");

		if (error_string) {
			*error_string = strdup("Unable to create Tcl interpreter.");
		}

		return(NULL);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	appfs_call_libtcl(
	tcl_ret = Tcl_Init(interp);
	)
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl.  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	appfs_call_libtcl(
	tcl_ret = Tcl_Eval(interp, "package ifneeded sha1 1.0 [list load {} sha1]");
	)
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl SHA1.  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	appfs_call_libtcl(
	tcl_ret = Tcl_Eval(interp, "package ifneeded appfsd 1.0 [list load {} appfsd]");
	)
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS Package.  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	/*
	 * Load "pki.tcl" in the same way as appfsd.tcl (see below)
	 */
	appfs_call_libtcl_enter
	tcl_ret = Tcl_Eval(interp, ""
#include "pki.tcl.h"
	"");
	appfs_call_libtcl_exit
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl PKI.  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	/*
	 * Load the "appfsd.tcl" script, which is "compiled" into a C header
	 * so that it does not need to exist on the filesystem and can be
	 * directly evaluated.
	 */
	appfs_call_libtcl_enter
	tcl_ret = Tcl_Eval(interp, ""
#include "appfsd.tcl.h"
	"");
	appfs_call_libtcl_exit
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS script.  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	/*
	 * Set global variables from C to Tcl
	 */
	appfs_call_libtcl(
		tcl_setvar_ret = Tcl_SetVar(interp, "::appfs::cachedir", appfs_cachedir, TCL_GLOBAL_ONLY);
	)
	if (tcl_setvar_ret == NULL) {
		fprintf(stderr, "Unable to set cache directory.  This should never fail.\n");

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	/*
	 * Initialize the "appfsd.tcl" environment, which must be done after
	 * global variables are set.
	 */
	appfs_call_libtcl(
	tcl_ret = Tcl_Eval(interp, "::appfs::init");
	)
	if (tcl_ret != TCL_OK) {
		fprintf(stderr, "Unable to initialize Tcl AppFS script (::appfs::init).  Aborting.\n");
		appfs_call_libtcl(
		fprintf(stderr, "Tcl Error is: %s\n", Tcl_GetStringResult(interp));
		)

		if (error_string) {
			appfs_call_libtcl(
			*error_string = strdup(Tcl_GetStringResult(interp));
			)
		}

		appfs_call_libtcl(Tcl_Release(interp);)

		APPFS_DEBUG("Terminating Tcl interpreter.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		return(NULL);
	}

	/*
	 * Hide some Tcl commands that we do not care to use and which may
	 * slow down run-time operations.
	 */
	appfs_call_libtcl(
	Tcl_HideCommand(interp, "auto_load_index", "auto_load_index");
	Tcl_HideCommand(interp, "unknown", "unknown");
	Tcl_HideCommand(interp, "exit", "exit");
	)

	/*
	 * Release the hold we have on the interpreter so that it may be
	 * deleted if needed
	 */
	appfs_call_libtcl(Tcl_Release(interp);)

	/*
	 * Return the completely initialized interpreter
	 */
	return(interp);
}

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	global_interp_reset_key = __sync_fetch_and_add(&interp_reset_key, 0);

	interp = pthread_getspecific(interpKey);
	if (interp != NULL && thread_interp_reset_key != global_interp_reset_key) {
		APPFS_DEBUG("Terminating old interpreter and restarting due to reset request.");

		Tcl_DeleteInterp(interp);

		interp = NULL;

		pthread_ret = pthread_setspecific(interpKey, interp);
	}

	if (global_interp_reset_key == -1) {







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	global_interp_reset_key = __sync_fetch_and_add(&interp_reset_key, 0);

	interp = pthread_getspecific(interpKey);
	if (interp != NULL && thread_interp_reset_key != global_interp_reset_key) {
		APPFS_DEBUG("Terminating old interpreter and restarting due to reset request.");

		appfs_call_libtcl(Tcl_DeleteInterp(interp);)

		interp = NULL;

		pthread_ret = pthread_setspecific(interpKey, interp);
	}

	if (global_interp_reset_key == -1) {
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			return(NULL);
		}

		pthread_ret = pthread_setspecific(interpKey, interp);
		if (pthread_ret != 0) {
			APPFS_DEBUG("pthread_setspecific() failed.  Terminating Tcl interpreter.");

			Tcl_DeleteInterp(interp);

			return(NULL);
		}
	}

	return(interp);
}







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			return(NULL);
		}

		pthread_ret = pthread_setspecific(interpKey, interp);
		if (pthread_ret != 0) {
			APPFS_DEBUG("pthread_setspecific() failed.  Terminating Tcl interpreter.");

			appfs_call_libtcl(Tcl_DeleteInterp(interp);)

			return(NULL);
		}
	}

	return(interp);
}
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	if (interp == NULL) {
		return(TCL_ERROR);
	}

	objv = (void *) ckalloc(sizeof(*objv) * objc);


	objv[0] = Tcl_NewStringObj(cmd, -1);

	Tcl_IncrRefCount(objv[0]);

	va_start(argp, cmd);
	for (i = 1; i < objc; i++) {
		arg = va_arg(argp, const char *);

		objv[i] = Tcl_NewStringObj(arg, -1);

		Tcl_IncrRefCount(objv[i]);
	}
	va_end(argp);



	retval = Tcl_EvalObjv(interp, objc, objv, 0);



	for (i = 0; i < objc; i++) {
		Tcl_DecrRefCount(objv[i]);
	}


	ckfree((void *) objv);

	if (retval != TCL_OK) {

		APPFS_DEBUG("Tcl command failed, ::errorInfo contains: %s\n", Tcl_GetVar(interp, "::errorInfo", 0));

	}

	return(retval);
}

/*
 * Request all Tcl interpreters restart







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	if (interp == NULL) {
		return(TCL_ERROR);
	}

	objv = (void *) ckalloc(sizeof(*objv) * objc);

	appfs_call_libtcl(
	objv[0] = Tcl_NewStringObj(cmd, -1);

	Tcl_IncrRefCount(objv[0]);

	va_start(argp, cmd);
	for (i = 1; i < objc; i++) {
		arg = va_arg(argp, const char *);

		objv[i] = Tcl_NewStringObj(arg, -1);

		Tcl_IncrRefCount(objv[i]);
	}
	va_end(argp);
	)

	appfs_call_libtcl(
	retval = Tcl_EvalObjv(interp, objc, objv, 0);
	)

	appfs_call_libtcl(
	for (i = 0; i < objc; i++) {
		Tcl_DecrRefCount(objv[i]);
	}
	)

	ckfree((void *) objv);

	if (retval != TCL_OK) {
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl command failed, ::errorInfo contains: %s\n", Tcl_GetVar(interp, "::errorInfo", 0));
		)
	}

	return(retval);
}

/*
 * Request all Tcl interpreters restart
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	Tcl_Obj *attrs_dict, *attr_value;
	const char *attr_value_str;
	Tcl_WideInt attr_value_wide;
	int attr_value_int;
	static __thread Tcl_Obj *attr_key_type = NULL, *attr_key_perms = NULL, *attr_key_size = NULL, *attr_key_time = NULL, *attr_key_source = NULL, *attr_key_childcount = NULL, *attr_key_packaged = NULL;
	int cache_ret;
	int tcl_ret;

	uid_t fsuid;



	fsuid = appfs_get_fsuid();

	cache_ret = appfs_get_path_info_cache_get(path, fsuid, pathinfo);
	if (cache_ret == 0) {
		if (pathinfo->type == APPFS_PATHTYPE_DOES_NOT_EXIST) {
			return(-ENOENT);







>

>
>







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	Tcl_Obj *attrs_dict, *attr_value;
	const char *attr_value_str;
	Tcl_WideInt attr_value_wide;
	int attr_value_int;
	static __thread Tcl_Obj *attr_key_type = NULL, *attr_key_perms = NULL, *attr_key_size = NULL, *attr_key_time = NULL, *attr_key_source = NULL, *attr_key_childcount = NULL, *attr_key_packaged = NULL;
	int cache_ret;
	int tcl_ret;
	int retval;
	uid_t fsuid;

	retval = 0;

	fsuid = appfs_get_fsuid();

	cache_ret = appfs_get_path_info_cache_get(path, fsuid, pathinfo);
	if (cache_ret == 0) {
		if (pathinfo->type == APPFS_PATHTYPE_DOES_NOT_EXIST) {
			return(-ENOENT);
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	}

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	Tcl_Preserve(interp);

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::getattr", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::getattr(%s) failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		pathinfo->type = APPFS_PATHTYPE_DOES_NOT_EXIST;

		appfs_get_path_info_cache_add(path, fsuid, pathinfo);

		Tcl_Release(interp);

		return(-ENOENT);
	}

	if (attr_key_type == NULL) {

		attr_key_type       = Tcl_NewStringObj("type", -1);
		attr_key_perms      = Tcl_NewStringObj("perms", -1);
		attr_key_size       = Tcl_NewStringObj("size", -1);
		attr_key_time       = Tcl_NewStringObj("time", -1);
		attr_key_source     = Tcl_NewStringObj("source", -1);
		attr_key_childcount = Tcl_NewStringObj("childcount", -1);
		attr_key_packaged   = Tcl_NewStringObj("packaged", -1);
	}











	attrs_dict = Tcl_GetObjResult(interp);
	tcl_ret = Tcl_DictObjGet(interp, attrs_dict, attr_key_type, &attr_value);

	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("[dict get \"type\"] failed");

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(-EIO);
	}

	if (attr_value == NULL) {
		Tcl_Release(interp);

		return(-EIO);
	}

	pathinfo->packaged = 0;
	pathinfo->inode = appfs_get_path_inode(path);


	attr_value_str = Tcl_GetString(attr_value);

	switch (attr_value_str[0]) {
		case 'd': /* directory */
			pathinfo->type = APPFS_PATHTYPE_DIRECTORY;
			pathinfo->typeinfo.dir.childcount = 0;








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>







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	}

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::getattr", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::getattr(%s) failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		pathinfo->type = APPFS_PATHTYPE_DOES_NOT_EXIST;

		appfs_get_path_info_cache_add(path, fsuid, pathinfo);

		appfs_call_libtcl(Tcl_Release(interp);)

		return(-ENOENT);
	}

	if (attr_key_type == NULL) {
		appfs_call_libtcl(
		attr_key_type       = Tcl_NewStringObj("type", -1);
		attr_key_perms      = Tcl_NewStringObj("perms", -1);
		attr_key_size       = Tcl_NewStringObj("size", -1);
		attr_key_time       = Tcl_NewStringObj("time", -1);
		attr_key_source     = Tcl_NewStringObj("source", -1);
		attr_key_childcount = Tcl_NewStringObj("childcount", -1);
		attr_key_packaged   = Tcl_NewStringObj("packaged", -1);

			Tcl_IncrRefCount(attr_key_type);
			Tcl_IncrRefCount(attr_key_perms);
			Tcl_IncrRefCount(attr_key_size);
			Tcl_IncrRefCount(attr_key_time);
			Tcl_IncrRefCount(attr_key_source);
			Tcl_IncrRefCount(attr_key_childcount);
			Tcl_IncrRefCount(attr_key_packaged);
		)
	}

	appfs_call_libtcl(
	attrs_dict = Tcl_GetObjResult(interp);
	tcl_ret = Tcl_DictObjGet(interp, attrs_dict, attr_key_type, &attr_value);
	)
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("[dict get \"type\"] failed");
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(-EIO);
	}

	if (attr_value == NULL) {
		appfs_call_libtcl(Tcl_Release(interp);)

		return(-EIO);
	}

	pathinfo->packaged = 0;
	pathinfo->inode = appfs_get_path_inode(path);

	appfs_call_libtcl(
	attr_value_str = Tcl_GetString(attr_value);

	switch (attr_value_str[0]) {
		case 'd': /* directory */
			pathinfo->type = APPFS_PATHTYPE_DIRECTORY;
			pathinfo->typeinfo.dir.childcount = 0;

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		case 'F': /* pipe/fifo */
			pathinfo->type = APPFS_PATHTYPE_FIFO;
			break;
		case 'S': /* UNIX domain socket */
			pathinfo->type = APPFS_PATHTYPE_SOCKET;
			break;
		default:
			Tcl_Release(interp);

			return(-EIO);
	}

	Tcl_DictObjGet(interp, attrs_dict, attr_key_packaged, &attr_value);
	if (attr_value != NULL) {
		pathinfo->packaged = 1;
	}

	Tcl_DictObjGet(interp, attrs_dict, attr_key_time, &attr_value);
	if (attr_value != NULL) {
		tcl_ret = Tcl_GetWideIntFromObj(NULL, attr_value, &attr_value_wide);
		if (tcl_ret == TCL_OK) {
			pathinfo->time = attr_value_wide;
		}
	} else {
		pathinfo->time = 0;
	}

	Tcl_Release(interp);



	appfs_get_path_info_cache_add(path, fsuid, pathinfo);


	return(0);
}

static char *appfs_prepare_to_create(const char *path) {
	Tcl_Interp *interp;
	const char *real_path;
	int tcl_ret;

	appfs_get_path_info_cache_flush(appfs_get_fsuid(), -1);

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(NULL);
	}

	Tcl_Preserve(interp);


	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::prepare_to_create", path);

	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::prepare_to_create(%s) failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(NULL);
	}


	real_path = Tcl_GetStringResult(interp);


	Tcl_Release(interp);

	if (real_path == NULL) {
		return(NULL);
	}

	return(strdup(real_path));
}

static char *appfs_localpath(const char *path) {
	Tcl_Interp *interp;
	const char *real_path;
	int tcl_ret;

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(NULL);
	}

	Tcl_Preserve(interp);


	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::localpath", path);

	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::localpath(%s) failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		return(NULL);
	}


	real_path = Tcl_GetStringResult(interp);


	Tcl_Release(interp);

	if (real_path == NULL) {
		return(NULL);
	}

	return(strdup(real_path));
}







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|

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		case 'F': /* pipe/fifo */
			pathinfo->type = APPFS_PATHTYPE_FIFO;
			break;
		case 'S': /* UNIX domain socket */
			pathinfo->type = APPFS_PATHTYPE_SOCKET;
			break;
		default:

				retval = -EIO;

	}

	Tcl_DictObjGet(interp, attrs_dict, attr_key_packaged, &attr_value);
	if (attr_value != NULL) {
		pathinfo->packaged = 1;
	}

	Tcl_DictObjGet(interp, attrs_dict, attr_key_time, &attr_value);
	if (attr_value != NULL) {
		tcl_ret = Tcl_GetWideIntFromObj(NULL, attr_value, &attr_value_wide);
		if (tcl_ret == TCL_OK) {
			pathinfo->time = attr_value_wide;
		}
	} else {
		pathinfo->time = 0;
	}

	Tcl_Release(interp);
	)

	if (retval == 0) {
	appfs_get_path_info_cache_add(path, fsuid, pathinfo);
	}

	return(retval);
}

static char *appfs_prepare_to_create(const char *path) {
	Tcl_Interp *interp;
	const char *real_path;
	int tcl_ret;

	appfs_get_path_info_cache_flush(appfs_get_fsuid(), -1);

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(NULL);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	appfs_call_libtcl(
	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::prepare_to_create", path);
	)
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::prepare_to_create(%s) failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(NULL);
	}

	appfs_call_libtcl(
	real_path = Tcl_GetStringResult(interp);
	)

	appfs_call_libtcl(Tcl_Release(interp);)

	if (real_path == NULL) {
		return(NULL);
	}

	return(strdup(real_path));
}

static char *appfs_localpath(const char *path) {
	Tcl_Interp *interp;
	const char *real_path;
	int tcl_ret;

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(NULL);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	appfs_call_libtcl(
	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::localpath", path);
	)
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::localpath(%s) failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		return(NULL);
	}

	appfs_call_libtcl(
	real_path = Tcl_GetStringResult(interp);
	)

	appfs_call_libtcl(Tcl_Release(interp);)

	if (real_path == NULL) {
		return(NULL);
	}

	return(strdup(real_path));
}
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	APPFS_DEBUG("Enter (path = %s, ...)", path);

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(0);
	}

	Tcl_Preserve(interp);

	filler(buf, ".", NULL, 0);
	filler(buf, "..", NULL, 0);

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::getchildren", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::getchildren(%s) failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(0);
	}


	tcl_ret = Tcl_ListObjGetElements(interp, Tcl_GetObjResult(interp), &children_count, &children);

	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("Parsing list of children on path %s failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(0);
	}

	for (idx = 0; idx < children_count; idx++) {

		filler(buf, Tcl_GetString(children[idx]), NULL, 0);

	}

	Tcl_Release(interp);

	return(0);
}

static int appfs_fuse_open(const char *path, struct fuse_file_info *fi) {
	Tcl_Interp *interp;
	struct appfs_pathinfo pathinfo;







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>

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	APPFS_DEBUG("Enter (path = %s, ...)", path);

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(0);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	filler(buf, ".", NULL, 0);
	filler(buf, "..", NULL, 0);

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::getchildren", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::getchildren(%s) failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(0);
	}

	appfs_call_libtcl(
	tcl_ret = Tcl_ListObjGetElements(interp, Tcl_GetObjResult(interp), &children_count, &children);
	)
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("Parsing list of children on path %s failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(0);
	}

	for (idx = 0; idx < children_count; idx++) {
		appfs_call_libtcl(
		filler(buf, Tcl_GetString(children[idx]), NULL, 0);
		)
	}

	appfs_call_libtcl(Tcl_Release(interp);)

	return(0);
}

static int appfs_fuse_open(const char *path, struct fuse_file_info *fi) {
	Tcl_Interp *interp;
	struct appfs_pathinfo pathinfo;
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	}

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	Tcl_Preserve(interp);

	tcl_ret = appfs_Tcl_Eval(interp, 3, "::appfs::openpath", path, mode);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::openpath(%s, %s) failed.", path, mode);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(-EIO);
	}


	real_path = Tcl_GetStringResult(interp);


	Tcl_Release(interp);

	if (real_path == NULL) {
		return(-EIO);
	}

	APPFS_DEBUG("Translated request to open %s to opening %s (mode = \"%s\")", path, real_path, mode);








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	}

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	tcl_ret = appfs_Tcl_Eval(interp, 3, "::appfs::openpath", path, mode);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::openpath(%s, %s) failed.", path, mode);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(-EIO);
	}

	appfs_call_libtcl(
	real_path = Tcl_GetStringResult(interp);
	)

	appfs_call_libtcl(Tcl_Release(interp);)

	if (real_path == NULL) {
		return(-EIO);
	}

	APPFS_DEBUG("Translated request to open %s to opening %s (mode = \"%s\")", path, real_path, mode);

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	if (interp == NULL) {
		return(-EIO);
	}

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::unlinkpath", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::unlinkpath(%s) failed.", path);

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(-EIO);
	}

	Tcl_Release(interp);

	return(0);
}

static int appfs_fuse_mkdir(const char *path, mode_t mode) {
	char *real_path;
	int mkdir_ret;







>

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	if (interp == NULL) {
		return(-EIO);
	}

	tcl_ret = appfs_Tcl_Eval(interp, 2, "::appfs::unlinkpath", path);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::unlinkpath(%s) failed.", path);
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(-EIO);
	}

	appfs_call_libtcl(Tcl_Release(interp);)

	return(0);
}

static int appfs_fuse_mkdir(const char *path, mode_t mode) {
	char *real_path;
	int mkdir_ret;
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	appfs_get_path_info_cache_rm(path, appfs_get_fsuid());

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	Tcl_Preserve(interp);

	tcl_ret = appfs_Tcl_Eval(interp, 3, "::appfs::openpath", path, "write");
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::openpath(%s, %s) failed.", path, "write");

		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));


		Tcl_Release(interp);

		return(-EIO);
	}


	real_path = Tcl_GetStringResult(interp);


	Tcl_Release(interp);

	if (real_path == NULL) {
		return(-EIO);
	}

	appfs_simulate_user_fs_enter();








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	appfs_get_path_info_cache_rm(path, appfs_get_fsuid());

	interp = appfs_TclInterp();
	if (interp == NULL) {
		return(-EIO);
	}

	appfs_call_libtcl(Tcl_Preserve(interp);)

	tcl_ret = appfs_Tcl_Eval(interp, 3, "::appfs::openpath", path, "write");
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("::appfs::openpath(%s, %s) failed.", path, "write");
		appfs_call_libtcl(
		APPFS_DEBUG("Tcl Error is: %s", Tcl_GetStringResult(interp));
		)

		appfs_call_libtcl(Tcl_Release(interp);)

		return(-EIO);
	}

	appfs_call_libtcl(
	real_path = Tcl_GetStringResult(interp);
	)

	appfs_call_libtcl(Tcl_Release(interp);)

	if (real_path == NULL) {
		return(-EIO);
	}

	appfs_simulate_user_fs_enter();

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                return(TCL_ERROR);
        }

	fsuid = appfs_get_fsuid();

	if (fsuid == last_fsuid && last_homedir_obj != NULL) {
		homedir_obj = last_homedir_obj;


	} else {
		homedir = appfs_get_homedir(appfs_get_fsuid());

		if (homedir == NULL) {
			return(TCL_ERROR);
		}

		homedir_obj = Tcl_NewStringObj(homedir, -1);

		free(homedir);



		if (last_homedir_obj != NULL) {
			Tcl_DecrRefCount(last_homedir_obj);
		}

		last_homedir_obj = homedir_obj;
		last_fsuid = fsuid;

		Tcl_IncrRefCount(last_homedir_obj);
	}

       	Tcl_SetObjResult(interp, homedir_obj);



        return(TCL_OK);
}

static int tcl_appfs_simulate_user_fs_enter(ClientData cd, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) {
	appfs_simulate_user_fs_enter();








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>
>







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                return(TCL_ERROR);
        }

	fsuid = appfs_get_fsuid();

	if (fsuid == last_fsuid && last_homedir_obj != NULL) {
		homedir_obj = last_homedir_obj;

		Tcl_IncrRefCount(homedir_obj);
	} else {
		homedir = appfs_get_homedir(appfs_get_fsuid());

		if (homedir == NULL) {
			return(TCL_ERROR);
		}

		homedir_obj = Tcl_NewStringObj(homedir, -1);

		free(homedir);

		Tcl_IncrRefCount(homedir_obj);

		if (last_homedir_obj != NULL) {
			Tcl_DecrRefCount(last_homedir_obj);
		}

		last_homedir_obj = homedir_obj;
		last_fsuid = fsuid;

		Tcl_IncrRefCount(homedir_obj);
	}

       	Tcl_SetObjResult(interp, homedir_obj);

	Tcl_DecrRefCount(homedir_obj);

        return(TCL_OK);
}

static int tcl_appfs_simulate_user_fs_enter(ClientData cd, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) {
	appfs_simulate_user_fs_enter();

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		return;
	}

	interp = _interp;

	APPFS_DEBUG("Terminating interpreter due to thread termination");


	Tcl_DeleteInterp(interp);


	return;
}

/*
 * FUSE operations structure
 */







>

>







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		return;
	}

	interp = _interp;

	APPFS_DEBUG("Terminating interpreter due to thread termination");

	appfs_call_libtcl(
	Tcl_DeleteInterp(interp);
	)

	return;
}

/*
 * FUSE operations structure
 */
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		}

		fprintf(stderr, "Unable to initialize Tcl interpreter for AppFSd:\n");
		fprintf(stderr, "%s\n", test_interp_error);

		return(1);
	}

	Tcl_DeleteInterp(test_interp);

	Tcl_FinalizeNotifier(NULL);

	/*
	 * Register a signal handler for hot-restart requests
	 */
	signal_ret = signal(SIGHUP, appfs_signal_handler);
	if (signal_ret == SIG_ERR) {







>

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		}

		fprintf(stderr, "Unable to initialize Tcl interpreter for AppFSd:\n");
		fprintf(stderr, "%s\n", test_interp_error);

		return(1);
	}

	Tcl_DeleteInterp(test_interp);

	Tcl_FinalizeNotifier(NULL);

	/*
	 * Register a signal handler for hot-restart requests
	 */
	signal_ret = signal(SIGHUP, appfs_signal_handler);
	if (signal_ret == SIG_ERR) {