Add debugging mode for diagnosing file descriptor leaks.

(Related to issue #14625)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@187300 65c4cc65-6c06-0410-ace0-fbb531ad65f3

agi/Makefile

@@ -21,6 +21,8 @@ endif
 
 include $(ASTTOPDIR)/Makefile.rules
 
+ASTCFLAGS+=-DSTANDALONE
+
 all: $(AGIS)
 
 strcompat.c: ../main/strcompat.c

build_tools/cflags.xml

@@ -5,6 +5,8 @@
 		</member>
 		<member name="DEBUG_THREADS" displayname="Enable Thread Debugging">
 		</member>
+		<member name="DEBUG_FD_LEAKS" displayname="Enable File Descriptor Leak Detection">
+		</member>
 		<member name="LOW_MEMORY" displayname="Optimize for Low Memory Usage">
 		</member>
 		<member name="MALLOC_DEBUG" displayname="Keep Track of Memory Allocations">

include/asterisk.h

@@ -35,6 +35,34 @@
 #define	setpriority	__PLEASE_USE_ast_set_priority_INSTEAD_OF_setpriority__
 #define	sched_setscheduler	__PLEASE_USE_ast_set_priority_INSTEAD_OF_sched_setscheduler__
 
+#if defined(DEBUG_FD_LEAKS) && !defined(STANDALONE) && !defined(STANDALONE_AEL)
+/* These includes are all about ordering */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define	open(a,...)	__ast_fdleak_open(__FILE__,__LINE__,__PRETTY_FUNCTION__, a, __VA_ARGS__)
+#define pipe(a)	__ast_fdleak_pipe(a, __FILE__,__LINE__,__PRETTY_FUNCTION__)
+#define socket(a,b,c)	__ast_fdleak_socket(a, b, c, __FILE__,__LINE__,__PRETTY_FUNCTION__)
+#define close(a)	__ast_fdleak_close(a)
+#define	fopen(a,b)	__ast_fdleak_fopen(a, b, __FILE__,__LINE__,__PRETTY_FUNCTION__)
+#define	fclose(a)	__ast_fdleak_fclose(a)
+#define	dup2(a,b)	__ast_fdleak_dup2(a, b, __FILE__,__LINE__,__PRETTY_FUNCTION__)
+#define dup(a)	__ast_fdleak_dup(a, __FILE__,__LINE__,__PRETTY_FUNCTION__)
+
+int __ast_fdleak_open(const char *file, int line, const char *func, const char *path, int flags, ...);
+int __ast_fdleak_pipe(int *fds, const char *file, int line, const char *func);
+int __ast_fdleak_socket(int domain, int type, int protocol, const char *file, int line, const char *func);
+int __ast_fdleak_close(int fd);
+FILE *__ast_fdleak_fopen(const char *path, const char *mode, const char *file, int line, const char *func);
+int __ast_fdleak_fclose(FILE *ptr);
+int __ast_fdleak_dup2(int oldfd, int newfd, const char *file, int line, const char *func);
+int __ast_fdleak_dup(int oldfd, const char *file, int line, const char *func);
+#endif
+
 /* provided in asterisk.c */
 extern char ast_config_AST_CONFIG_DIR[PATH_MAX];
 extern char ast_config_AST_CONFIG_FILE[PATH_MAX];
@@ -73,6 +101,7 @@ int dnsmgr_reload(void);			/*!< Provided by dnsmgr.c */
 void threadstorage_init(void);			/*!< Provided by threadstorage.c */
 int astobj2_init(void);				/*! Provided by astobj2.c */
 void ast_autoservice_init(void);    /*!< Provided by autoservice.c */
+int ast_fd_init(void);				/*!< Provided by astfd.c */
 
 /* Many headers need 'ast_channel' to be defined */
 struct ast_channel;

main/Makefile

@@ -22,7 +22,7 @@ OBJS=	io.o sched.o logger.o frame.o loader.o config.o channel.o \
 	ulaw.o alaw.o callerid.o fskmodem.o image.o app.o \
 	cdr.o tdd.o acl.o rtp.o udptl.o manager.o asterisk.o \
 	dsp.o chanvars.o indications.o autoservice.o db.o privacy.o \
-	astmm.o enum.o srv.o dns.o aescrypt.o aestab.o aeskey.o \
+	astmm.o astfd.o enum.o srv.o dns.o aescrypt.o aestab.o aeskey.o \
 	utils.o plc.o jitterbuf.o dnsmgr.o devicestate.o \
 	netsock.o slinfactory.o ast_expr2.o ast_expr2f.o \
 	cryptostub.o sha1.o http.o fixedjitterbuf.o abstract_jb.o \

main/asterisk.c

@@ -2732,6 +2732,7 @@ int main(int argc, char *argv[])
 	ast_builtins_init();
 	ast_utils_init();
 	tdd_init();
+	ast_fd_init();
 
 	if (getenv("HOME")) 
 		snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));

main/file.c

@@ -332,8 +332,10 @@ static void filestream_destructor(void *arg)
 		free(f->filename);
 	if (f->realfilename)
 		free(f->realfilename);
-	if (f->fmt->close)
-		f->fmt->close(f);
+	if (f->fmt->close) {
+		void (*closefn)(struct ast_filestream *) = f->fmt->close;
+		closefn(f);
+	}
 	if (f->f)
 		fclose(f->f);
 	if (f->vfs)
@@ -371,8 +373,9 @@ static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_f
 {
 	struct ast_format *f = s->fmt;
 	int ret = -1;
+	int (*openfn)(struct ast_filestream *s);
 
-	if (mode == WRAP_OPEN && f->open && f->open(s))
+	if (mode == WRAP_OPEN && (openfn = f->open) && openfn(s))
                 ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
 	else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
                 ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);

utils/Makefile

@@ -75,7 +75,7 @@ md5.c: ../main/md5.c
 
 astman: astman.o md5.o
 astman: LIBS+=$(NEWT_LIB)
-astman.o: ASTCFLAGS+=-DNO_MALLOC_DEBUG
+astman.o: ASTCFLAGS+=-DNO_MALLOC_DEBUG -DSTANDALONE
 
 stereorize: stereorize.o frame.o
 stereorize: LIBS+=-lm