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* [PATCH v2 1/2] file_list: add file_list_parse_null()
@ 2021-08-10  5:29 Rouven Czerwinski
  2021-08-10  5:29 ` [PATCH v2 2/2] fastboot: use file_list_parse_null() Rouven Czerwinski
  2021-08-23 13:48 ` [PATCH v2 1/2] file_list: add file_list_parse_null() Sascha Hauer
  0 siblings, 2 replies; 3+ messages in thread
From: Rouven Czerwinski @ 2021-08-10  5:29 UTC (permalink / raw)
  To: barebox; +Cc: Rouven Czerwinski

Move the usbgadget parse() function to file_list and rename it to
file_list_parse_null() which will return a NULL pointer instead of an
error. Also adjust the callers in the usbgadget code.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>

---
v2: rebase on master to fix USB mass storage conflict
---
 common/file-list.c  | 16 ++++++++++++++++
 common/usbgadget.c  | 24 ++++--------------------
 include/file-list.h |  1 +
 3 files changed, 21 insertions(+), 20 deletions(-)

diff --git a/common/file-list.c b/common/file-list.c
index 05f44514fb..407b312833 100644
--- a/common/file-list.c
+++ b/common/file-list.c
@@ -158,6 +158,22 @@ out:
 	return ERR_PTR(ret);
 }
 
+struct file_list *file_list_parse_null(const char *files)
+{
+	struct file_list *list;
+
+	if (!files)
+		return NULL;
+
+	list = file_list_parse(files);
+	if (IS_ERR(list)) {
+		pr_err("Parsing file list \"%s\" failed: %pe\n", files, list);
+		return NULL;
+	}
+
+	return list;
+}
+
 void file_list_free(struct file_list *files)
 {
 	struct file_list_entry *entry, *tmp;
diff --git a/common/usbgadget.c b/common/usbgadget.c
index 34a685234b..e8c9f7d236 100644
--- a/common/usbgadget.c
+++ b/common/usbgadget.c
@@ -23,26 +23,10 @@ static int autostart;
 static int acm;
 static char *dfu_function;
 
-static struct file_list *parse(const char *files)
-{
-	struct file_list *list;
-
-	if (!files)
-		return NULL;
-
-	list = file_list_parse(files);
-	if (IS_ERR(list)) {
-		pr_err("Parsing file list \"%s\" failed: %pe\n", files, list);
-		return NULL;
-	}
-
-	return list;
-}
-
 static inline struct file_list *get_dfu_function(void)
 {
 	if (dfu_function && *dfu_function)
-		return file_list_parse(dfu_function);
+		return file_list_parse_null(dfu_function);
 	if (!system_partitions_empty())
 		return system_partitions_get();
 	return NULL;
@@ -59,7 +43,7 @@ int usbgadget_register(const struct usbgadget_funcs *funcs)
 	opts->release = usb_multi_opts_release;
 
 	if (flags & USBGADGET_DFU) {
-		opts->dfu_opts.files = parse(funcs->dfu_opts);
+		opts->dfu_opts.files = file_list_parse_null(funcs->dfu_opts);
 		if (IS_ENABLED(CONFIG_USB_GADGET_DFU) && file_list_empty(opts->dfu_opts.files)) {
 			file_list_free(opts->dfu_opts.files);
 			opts->dfu_opts.files = get_dfu_function();
@@ -67,7 +51,7 @@ int usbgadget_register(const struct usbgadget_funcs *funcs)
 	}
 
 	if (flags & USBGADGET_MASS_STORAGE) {
-		opts->ums_opts.files = parse(funcs->ums_opts);
+		opts->ums_opts.files = file_list_parse_null(funcs->ums_opts);
 		if (IS_ENABLED(CONFIG_USB_GADGET_MASS_STORAGE) && file_list_empty(opts->ums_opts.files)) {
 			file_list_free(opts->ums_opts.files);
 			opts->ums_opts.files = system_partitions_get();
@@ -75,7 +59,7 @@ int usbgadget_register(const struct usbgadget_funcs *funcs)
 	}
 
 	if (flags & USBGADGET_FASTBOOT) {
-		opts->fastboot_opts.files = parse(funcs->fastboot_opts);
+		opts->fastboot_opts.files = file_list_parse_null(funcs->fastboot_opts);
 		if (IS_ENABLED(CONFIG_FASTBOOT_BASE) && file_list_empty(opts->fastboot_opts.files)) {
 			file_list_free(opts->fastboot_opts.files);
 			opts->fastboot_opts.files = get_fastboot_partitions();
diff --git a/include/file-list.h b/include/file-list.h
index 7e2a4d9205..5090313739 100644
--- a/include/file-list.h
+++ b/include/file-list.h
@@ -22,6 +22,7 @@ struct file_list {
 };
 
 struct file_list *file_list_parse(const char *str);
+struct file_list *file_list_parse_null(const char *str);
 char *file_list_to_str(const struct file_list *files);
 void file_list_free(struct file_list *);
 
-- 
2.32.0


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^ permalink raw reply	[flat|nested] 3+ messages in thread

* [PATCH v2 2/2] fastboot: use file_list_parse_null()
  2021-08-10  5:29 [PATCH v2 1/2] file_list: add file_list_parse_null() Rouven Czerwinski
@ 2021-08-10  5:29 ` Rouven Czerwinski
  2021-08-23 13:48 ` [PATCH v2 1/2] file_list: add file_list_parse_null() Sascha Hauer
  1 sibling, 0 replies; 3+ messages in thread
From: Rouven Czerwinski @ 2021-08-10  5:29 UTC (permalink / raw)
  To: barebox; +Cc: Rouven Czerwinski

In case an invalid file list is passed to file_list_parse(), it will
return an error, i.e. by passing "/dev/mmc1(emmc) /dev/mmc1.1(root)",
the error here being that the entries are not comma separated and
file_list_parse will try to parse ' ' as a flag. The fastboot code
didn't handle this, leading to the following error:

  ERROR: file_list: Unknown flag ' '
  ERROR: file_list: parse error
  unable to handle paging request at address 0xfffffff2
  pc : [<8fe26a20>]    lr : [<8fe0f965>]
  sp : 8ffeff50  ip : 8ffef714  fp : 00079bda
  r10: 001b9ff8  r9 : 8fea7eec  r8 : 00000001
  r7 : 00000000  r6 : 00000001  r5 : 00000000  r4 : 8813eab0
  r3 : ffffffea  r2 : 00020000  r1 : 00000001  r0 : 8813eab0
  Flags: nzCv  IRQs off  FIQs off  Mode SVC_32
  WARNING: [<8fe26a20>] (usb_multi_count_functions+0xc/0x2a) from [<8fe0f965>] (usbgadget_register+0x79/0xf4)
  WARNING: [<8fe0f965>] (usbgadget_register+0x79/0xf4) from [<8fe0fa13>] (usbgadget_autostart_set+0x33/0x4c)
  WARNING: [<8fe0fa13>] (usbgadget_autostart_set+0x33/0x4c) from [<8fe4d437>] (param_int_set+0x4b/0xb0)
  WARNING: [<8fe4d437>] (param_int_set+0x4b/0xb0) from [<8fe4d899>] (dev_set_param+0x4d/0x64)
  WARNING: [<8fe4d899>] (dev_set_param+0x4d/0x64) from [<8fe066f1>] (globalvar_add_bool+0x49/0x54)
  WARNING: [<8fe066f1>] (globalvar_add_bool+0x49/0x54) from [<8fe0f8dd>] (usbgadget_autostart_init+0x15/0x24)
  WARNING: [<8fe0f8dd>] (usbgadget_autostart_init+0x15/0x24) from [<8fe01081>] (start_barebox+0x35/0x6c)
  WARNING: [<8fe01081>] (start_barebox+0x35/0x6c) from [<8fe62ed9>] (barebox_non_pbl_start+0x121/0x164)
  WARNING: [<8fe62ed9>] (barebox_non_pbl_start+0x121/0x164) from [<8fe00005>] (__bare_init_start+0x1/0xc)

  WARNING: [<8fe64e3d>] (unwind_backtrace+0x1/0x78) from [<8fe01385>] (panic+0x1d/0x34)
  WARNING: [<8fe01385>] (panic+0x1d/0x34) from [<8fe62723>] (do_exception+0xf/0x14)
  WARNING: [<8fe62723>] (do_exception+0xf/0x14) from [<8fe62791>] (do_data_abort+0x21/0x34)
  WARNING: [<8fe62791>] (do_data_abort+0x21/0x34) from [<8fe624d4>] (do_abort_6+0x48/0x54)

Use file_list_parse_null instead of file_list_parse to get a NULL
pointer if there is a parse error.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>

---
v2: remove left over braces
---
 common/fastboot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/fastboot.c b/common/fastboot.c
index 75f6691b08..04a8573b4a 100644
--- a/common/fastboot.c
+++ b/common/fastboot.c
@@ -919,7 +919,7 @@ bool get_fastboot_bbu(void)
 struct file_list *get_fastboot_partitions(void)
 {
 	if (fastboot_partitions && *fastboot_partitions)
-		return file_list_parse(fastboot_partitions);
+		return file_list_parse_null(fastboot_partitions);
 	if (!system_partitions_empty())
 		return system_partitions_get();
 	return NULL;
-- 
2.32.0


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barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH v2 1/2] file_list: add file_list_parse_null()
  2021-08-10  5:29 [PATCH v2 1/2] file_list: add file_list_parse_null() Rouven Czerwinski
  2021-08-10  5:29 ` [PATCH v2 2/2] fastboot: use file_list_parse_null() Rouven Czerwinski
@ 2021-08-23 13:48 ` Sascha Hauer
  1 sibling, 0 replies; 3+ messages in thread
From: Sascha Hauer @ 2021-08-23 13:48 UTC (permalink / raw)
  To: Rouven Czerwinski; +Cc: barebox

On Tue, Aug 10, 2021 at 07:29:27AM +0200, Rouven Czerwinski wrote:
> Move the usbgadget parse() function to file_list and rename it to
> file_list_parse_null() which will return a NULL pointer instead of an
> error. Also adjust the callers in the usbgadget code.
> 
> Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
> 
> ---
> v2: rebase on master to fix USB mass storage conflict
> ---
>  common/file-list.c  | 16 ++++++++++++++++
>  common/usbgadget.c  | 24 ++++--------------------
>  include/file-list.h |  1 +
>  3 files changed, 21 insertions(+), 20 deletions(-)

Applied, thanks

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
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^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-23 13:50 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-10  5:29 [PATCH v2 1/2] file_list: add file_list_parse_null() Rouven Czerwinski
2021-08-10  5:29 ` [PATCH v2 2/2] fastboot: use file_list_parse_null() Rouven Czerwinski
2021-08-23 13:48 ` [PATCH v2 1/2] file_list: add file_list_parse_null() Sascha Hauer

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