Fix an error handling bug in the fread logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5511 42af7a65-404d-4744-a932-0658087f49c3

examples/posix_spawn/Makefile

@@ -105,7 +105,26 @@ distclean: clean
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
-# There are no dependencies in this directory.  We should are code some of
+# There are no dependencies in this directory.  Some of more important
-# more important dependencies here:
+# and more obvious dependencies are hard-coded here:
 
--include Make.dep
+spawn_main.o: spawn_main.c \
+	$(TOPDIR)/include/nuttx/config.h \
+	$(TOPDIR)/include/nuttx/compiler.h \
+	$(TOPDIR)/include/sys/mount.h \
+	$(TOPDIR)/include/stdio.h \
+	$(TOPDIR)/include/stdlib.h \
+	$(TOPDIR)/include/unistd.h \
+	$(TOPDIR)/include/string.h \
+	$(TOPDIR)/include/fcntl.h \
+	$(TOPDIR)/include/spawn.h \
+	$(TOPDIR)/include/debug.h \
+	$(TOPDIR)/include/errno.h \
+	$(TOPDIR)/include/nuttx/ramdisk.h \
+	$(TOPDIR)/include/nuttx/binfmt/elf.h \
+	$(TOPDIR)/include/nuttx/binfmt/symtab.h \
+	filesystem/romfs.h
+
+symtab.o: filesystem/symtab.c \
+	$(TOPDIR)/include/nuttx/compiler.h \
+	$(TOPDIR)/include/nuttx/binfmt/symtab.h

examples/posix_spawn/filesystem/Makefile

@@ -44,7 +44,7 @@ ROMFS_HDR = $(FILESYSTEM_DIR)$(DELIM)romfs.h
 SYMTAB_SRC = $(FILESYSTEM_DIR)$(DELIM)symtab.c
 
 all: $(ROMFS_HDR) $(SYMTAB_SRC)
-.PHONY: all hello redirect clean install populate
+.PHONY: all hello/hello redirect/redirect clean populate
 
 # Create the romfs directory
 
@@ -53,24 +53,20 @@ $(ROMFS_DIR):
 
 # Build the hello test program
 
-hello: $(ROMFS_DIR)
+hello/hello:
 	$(Q) $(MAKE) -C hello hello TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
 
 # Build the redirection test program
 
-redirect: $(ROMFS_DIR)
+redirect/redirect:
 	$(Q) $(MAKE) -C redirect redirect TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
 
-# Install the test programs in the romfs directory
-
-install: hello redirect testdata.txt
-	$(Q) $(MAKE) -C hello install TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
-	$(Q) $(MAKE) -C redirect install TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
-	$(Q) install --mode=0644 testdata.txt $(ROMFS_DIR)/testdata.txt
-
 # Create the romfs.img file from the romfs directory
 
-$(ROMFS_IMG): install
+$(ROMFS_IMG): hello/hello redirect/redirect testdata.txt $(ROMFS_DIR)
+	$(Q) $(MAKE) -C hello install TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
+	$(Q) $(MAKE) -C redirect install TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" ROMFS_DIR="$(ROMFS_DIR)"
+	$(Q) install --mode=0644 testdata.txt $(ROMFS_DIR)/testdata.txt
 	$(Q) genromfs -f $@ -d $(ROMFS_DIR) -V "POSIXSPAWN"
 
 # Create the romfs.h header file from the romfs.img file
@@ -80,7 +76,7 @@ $(ROMFS_HDR) : $(ROMFS_IMG)
 
 # Create the exported symbol table
 
-$(SYMTAB_SRC): hello/hello redirect/redirect testdata.txt
+$(SYMTAB_SRC): $(ROMFS_DIR)/hello $(ROMFS_DIR)/redirect $(ROMFS_DIR)/testdata.txt
 	$(Q) $(FILESYSTEM_DIR)$(DELIM)mksymtab.sh $(ROMFS_DIR) >$@
 
 # Clean each subdirectory

examples/posix_spawn/spawn_main.c

@@ -89,6 +89,15 @@
 #  error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
 #endif
 
+/* The redirection test does not work.  This is because it tries to redirect
+ * file as stdin.  That won't work now because (1) the file descriptors must
+ * be dup'ed when the new task is created, and (2) there is no support in
+ * place for dup'ing file descriptors for anything other than sockets and
+ * character drivers.  This is a bug!
+ */
+
+#define FILE_DUP_BUG 1
+
 /* Describe the ROMFS file system */
 
 #define SECTORSIZE   512
@@ -138,7 +147,9 @@ static unsigned int g_mmstep;     /* Memory Usage at beginning of test step */
 
 static const char delimiter[] =
   "****************************************************************************";
+#ifndef FILE_DUP_BUG
 static const char g_redirect[] = "redirect";
+#endif
 static const char g_hello[]    = "hello";
 static const char g_data[]     = "testdata.txt";
 
@@ -361,9 +372,11 @@ int spawn_main(int argc, char *argv[])
   mm_update(&g_mmstep, "after file_action/attr destruction");
 
   /*************************************************************************
-   * Case 2: Simple program with redirection of stdin
+   * Case 2: Simple program with redirection of stdin to a file input
    *************************************************************************/
 
+#ifndef FILE_DUP_BUG
+
   /* Output a seperated so that we can clearly discriminate the output of
    * this program from the others.
    */
@@ -450,6 +463,7 @@ int spawn_main(int argc, char *argv[])
   posix_spawnattr_dump(&attr);
 
   mm_update(&g_mmstep, "after file_action/attr destruction");
+#endif
 
   /* Clean-up */