This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
option.
Cc: [email protected]
Signed-off-by: Ruslan Ruslichenko <[email protected]>
Signed-off-by: Ruslan Bilovol <[email protected]>
Signed-off-by: Daniel Walker <[email protected]>
---
arch/powerpc/Kconfig | 37 +--------------------------------
arch/powerpc/kernel/prom.c | 1 +
arch/powerpc/kernel/prom_init.c | 31 +++++++++++++++------------
3 files changed, 20 insertions(+), 49 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 107bb4319e0e..276b06d5c961 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -167,6 +167,7 @@ config PPC
select EDAC_SUPPORT
select GENERIC_ATOMIC64 if PPC32
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select GENERIC_CMDLINE
select GENERIC_CMOS_UPDATE
select GENERIC_CPU_AUTOPROBE
select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC
@@ -906,42 +907,6 @@ config PPC_DENORMALISATION
Add support for handling denormalisation of single precision
values. Useful for bare metal only. If unsure say Y here.
-config CMDLINE
- string "Initial kernel command string"
- default ""
- help
- On some platforms, there is currently no way for the boot loader to
- pass arguments to the kernel. For these platforms, you can supply
- some command-line options at build time by entering them here. In
- most cases you will need to specify the root device here.
-
-choice
- prompt "Kernel command line type" if CMDLINE != ""
- default CMDLINE_FROM_BOOTLOADER
-
-config CMDLINE_FROM_BOOTLOADER
- bool "Use bootloader kernel arguments if available"
- help
- Uses the command-line options passed by the boot loader. If
- the boot loader doesn't provide any, the default kernel command
- string provided in CMDLINE will be used.
-
-config CMDLINE_EXTEND
- bool "Extend bootloader kernel arguments"
- help
- The command-line arguments provided by the boot loader will be
- appended to the default kernel command string.
-
-config CMDLINE_FORCE
- bool "Always use the default kernel command string"
- help
- Always use the default kernel command string, even if the boot
- loader passes other arguments to the kernel.
- This is useful if you cannot or don't want to change the
- command-line options your boot loader passes to the kernel.
-
-endchoice
-
config EXTRA_TARGETS
string "Additional default image types"
help
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index ae3c41730367..96d0a01be1b4 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -27,6 +27,7 @@
#include <linux/irq.h>
#include <linux/memblock.h>
#include <linux/of.h>
+#include <linux/cmdline.h>
#include <linux/of_fdt.h>
#include <linux/libfdt.h>
#include <linux/cpu.h>
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index e9d4eb6144e1..d752be688b62 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -27,6 +27,7 @@
#include <linux/initrd.h>
#include <linux/bitops.h>
#include <linux/pgtable.h>
+#include <linux/cmdline.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/page.h>
@@ -242,15 +243,6 @@ static int __init prom_strcmp(const char *cs, const char *ct)
return 0;
}
-static char __init *prom_strcpy(char *dest, const char *src)
-{
- char *tmp = dest;
-
- while ((*dest++ = *src++) != '\0')
- /* nothing */;
- return tmp;
-}
-
static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
{
unsigned char c1, c2;
@@ -276,6 +268,19 @@ static size_t __init prom_strlen(const char *s)
return sc - s;
}
+static size_t __init prom_strlcpy(char *dest, const char *src, size_t size)
+{
+ size_t ret = prom_strlen(src);
+
+ if (size) {
+ size_t len = (ret >= size) ? size - 1 : ret;
+ memcpy(dest, src, len);
+ dest[len] = '\0';
+ }
+ return ret;
+}
+
+
static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
{
const unsigned char *su1, *su2;
@@ -778,9 +783,9 @@ static void __init early_cmdline_parse(void)
if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0)
l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
- if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0')
- prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
- sizeof(prom_cmd_line));
+ if (l <= 0 || p[0] == '\0') /* dbl check */
+ cmdline_add_builtin_custom(prom_cmd_line, NULL, sizeof(prom_cmd_line),
+ __prombss, &prom_strlcpy, &prom_strlcat);
prom_printf("command line: %s\n", prom_cmd_line);
@@ -2706,7 +2711,7 @@ static void __init flatten_device_tree(void)
/* Add "phandle" in there, we'll need it */
namep = make_room(&mem_start, &mem_end, 16, 1);
- prom_strcpy(namep, "phandle");
+ prom_strlcpy(namep, "phandle", 8);
mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
/* Build string array */
--
2.25.1
Le 04/03/2021 à 05:48, Daniel Walker a écrit :
> This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
> option.
Should be split in two patches. The change of strcpy to strlcpy should go in a first patch.
>
> Cc: [email protected]
> Signed-off-by: Ruslan Ruslichenko <[email protected]>
> Signed-off-by: Ruslan Bilovol <[email protected]>
> Signed-off-by: Daniel Walker <[email protected]>
> ---
> arch/powerpc/Kconfig | 37 +--------------------------------
> arch/powerpc/kernel/prom.c | 1 +
> arch/powerpc/kernel/prom_init.c | 31 +++++++++++++++------------
> 3 files changed, 20 insertions(+), 49 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 107bb4319e0e..276b06d5c961 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -167,6 +167,7 @@ config PPC
> select EDAC_SUPPORT
> select GENERIC_ATOMIC64 if PPC32
> select GENERIC_CLOCKEVENTS_BROADCAST if SMP
> + select GENERIC_CMDLINE
> select GENERIC_CMOS_UPDATE
> select GENERIC_CPU_AUTOPROBE
> select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC
> @@ -906,42 +907,6 @@ config PPC_DENORMALISATION
> Add support for handling denormalisation of single precision
> values. Useful for bare metal only. If unsure say Y here.
>
> -config CMDLINE
> - string "Initial kernel command string"
> - default ""
> - help
> - On some platforms, there is currently no way for the boot loader to
> - pass arguments to the kernel. For these platforms, you can supply
> - some command-line options at build time by entering them here. In
> - most cases you will need to specify the root device here.
> -
> -choice
> - prompt "Kernel command line type" if CMDLINE != ""
> - default CMDLINE_FROM_BOOTLOADER
> -
> -config CMDLINE_FROM_BOOTLOADER
> - bool "Use bootloader kernel arguments if available"
> - help
> - Uses the command-line options passed by the boot loader. If
> - the boot loader doesn't provide any, the default kernel command
> - string provided in CMDLINE will be used.
> -
> -config CMDLINE_EXTEND
> - bool "Extend bootloader kernel arguments"
> - help
> - The command-line arguments provided by the boot loader will be
> - appended to the default kernel command string.
> -
> -config CMDLINE_FORCE
> - bool "Always use the default kernel command string"
> - help
> - Always use the default kernel command string, even if the boot
> - loader passes other arguments to the kernel.
> - This is useful if you cannot or don't want to change the
> - command-line options your boot loader passes to the kernel.
> -
> -endchoice
> -
> config EXTRA_TARGETS
> string "Additional default image types"
> help
> diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
> index ae3c41730367..96d0a01be1b4 100644
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -27,6 +27,7 @@
> #include <linux/irq.h>
> #include <linux/memblock.h>
> #include <linux/of.h>
> +#include <linux/cmdline.h>
> #include <linux/of_fdt.h>
> #include <linux/libfdt.h>
> #include <linux/cpu.h>
> diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
> index e9d4eb6144e1..d752be688b62 100644
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -27,6 +27,7 @@
> #include <linux/initrd.h>
> #include <linux/bitops.h>
> #include <linux/pgtable.h>
> +#include <linux/cmdline.h>
> #include <asm/prom.h>
> #include <asm/rtas.h>
> #include <asm/page.h>
> @@ -242,15 +243,6 @@ static int __init prom_strcmp(const char *cs, const char *ct)
> return 0;
> }
>
> -static char __init *prom_strcpy(char *dest, const char *src)
> -{
> - char *tmp = dest;
> -
> - while ((*dest++ = *src++) != '\0')
> - /* nothing */;
> - return tmp;
> -}
> -
> static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
> {
> unsigned char c1, c2;
> @@ -276,6 +268,19 @@ static size_t __init prom_strlen(const char *s)
> return sc - s;
> }
>
> +static size_t __init prom_strlcpy(char *dest, const char *src, size_t size)
> +{
> + size_t ret = prom_strlen(src);
> +
> + if (size) {
> + size_t len = (ret >= size) ? size - 1 : ret;
> + memcpy(dest, src, len);
> + dest[len] = '\0';
> + }
> + return ret;
> +}
> +
> +
> static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
> {
> const unsigned char *su1, *su2;
> @@ -778,9 +783,9 @@ static void __init early_cmdline_parse(void)
> if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0)
You have removed CONFIG_CMDLINE_FORCE and the generic cmdline doesn't provide it.
> l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
>
> - if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0')
> - prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
> - sizeof(prom_cmd_line));
> + if (l <= 0 || p[0] == '\0') /* dbl check */
So it means cmdline_add_builtin_custom() is only called when bootloader does not provide bootargs ?
> + cmdline_add_builtin_custom(prom_cmd_line, NULL, sizeof(prom_cmd_line),
> + __prombss, &prom_strlcpy, &prom_strlcat);
>
> prom_printf("command line: %s\n", prom_cmd_line);
>
> @@ -2706,7 +2711,7 @@ static void __init flatten_device_tree(void)
>
> /* Add "phandle" in there, we'll need it */
> namep = make_room(&mem_start, &mem_end, 16, 1);
> - prom_strcpy(namep, "phandle");
> + prom_strlcpy(namep, "phandle", 8);
> mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
>
> /* Build string array */
>
Le 04/03/2021 à 05:48, Daniel Walker a écrit :
> This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
> option.
In file included from arch/powerpc/kernel/prom_init.c:30:
arch/powerpc/kernel/prom_init.c: In function 'early_cmdline_parse':
arch/powerpc/kernel/prom_init.c:788:17: error: lvalue required as unary '&' operand
788 | __prombss, &prom_strlcpy, &prom_strlcat);
| ^
./include/linux/cmdline.h:66:3: note: in definition of macro 'cmdline_add_builtin_custom'
66 | strlcpy(dest, src, length); \
| ^~~~~~~
At top level:
arch/powerpc/kernel/prom_init.c:312:22: error: 'prom_strlcat' defined but not used
[-Werror=unused-function]
312 | static size_t __init prom_strlcat(char *dest, const char *src, size_t count)
| ^~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [scripts/Makefile.build:279: arch/powerpc/kernel/prom_init.o] Error 1
make[1]: *** [scripts/Makefile.build:496: arch/powerpc/kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1805: arch/powerpc] Error 2
make: *** Waiting for unfinished jobs....
>
> Cc: [email protected]
> Signed-off-by: Ruslan Ruslichenko <[email protected]>
> Signed-off-by: Ruslan Bilovol <[email protected]>
> Signed-off-by: Daniel Walker <[email protected]>
> ---
> arch/powerpc/Kconfig | 37 +--------------------------------
> arch/powerpc/kernel/prom.c | 1 +
> arch/powerpc/kernel/prom_init.c | 31 +++++++++++++++------------
> 3 files changed, 20 insertions(+), 49 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 107bb4319e0e..276b06d5c961 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -167,6 +167,7 @@ config PPC
> select EDAC_SUPPORT
> select GENERIC_ATOMIC64 if PPC32
> select GENERIC_CLOCKEVENTS_BROADCAST if SMP
> + select GENERIC_CMDLINE
> select GENERIC_CMOS_UPDATE
> select GENERIC_CPU_AUTOPROBE
> select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC
> @@ -906,42 +907,6 @@ config PPC_DENORMALISATION
> Add support for handling denormalisation of single precision
> values. Useful for bare metal only. If unsure say Y here.
>
> -config CMDLINE
> - string "Initial kernel command string"
> - default ""
> - help
> - On some platforms, there is currently no way for the boot loader to
> - pass arguments to the kernel. For these platforms, you can supply
> - some command-line options at build time by entering them here. In
> - most cases you will need to specify the root device here.
> -
> -choice
> - prompt "Kernel command line type" if CMDLINE != ""
> - default CMDLINE_FROM_BOOTLOADER
> -
> -config CMDLINE_FROM_BOOTLOADER
> - bool "Use bootloader kernel arguments if available"
> - help
> - Uses the command-line options passed by the boot loader. If
> - the boot loader doesn't provide any, the default kernel command
> - string provided in CMDLINE will be used.
> -
> -config CMDLINE_EXTEND
> - bool "Extend bootloader kernel arguments"
> - help
> - The command-line arguments provided by the boot loader will be
> - appended to the default kernel command string.
> -
> -config CMDLINE_FORCE
> - bool "Always use the default kernel command string"
> - help
> - Always use the default kernel command string, even if the boot
> - loader passes other arguments to the kernel.
> - This is useful if you cannot or don't want to change the
> - command-line options your boot loader passes to the kernel.
> -
> -endchoice
> -
> config EXTRA_TARGETS
> string "Additional default image types"
> help
> diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
> index ae3c41730367..96d0a01be1b4 100644
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -27,6 +27,7 @@
> #include <linux/irq.h>
> #include <linux/memblock.h>
> #include <linux/of.h>
> +#include <linux/cmdline.h>
> #include <linux/of_fdt.h>
> #include <linux/libfdt.h>
> #include <linux/cpu.h>
> diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
> index e9d4eb6144e1..d752be688b62 100644
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -27,6 +27,7 @@
> #include <linux/initrd.h>
> #include <linux/bitops.h>
> #include <linux/pgtable.h>
> +#include <linux/cmdline.h>
> #include <asm/prom.h>
> #include <asm/rtas.h>
> #include <asm/page.h>
> @@ -242,15 +243,6 @@ static int __init prom_strcmp(const char *cs, const char *ct)
> return 0;
> }
>
> -static char __init *prom_strcpy(char *dest, const char *src)
> -{
> - char *tmp = dest;
> -
> - while ((*dest++ = *src++) != '\0')
> - /* nothing */;
> - return tmp;
> -}
> -
> static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
> {
> unsigned char c1, c2;
> @@ -276,6 +268,19 @@ static size_t __init prom_strlen(const char *s)
> return sc - s;
> }
>
> +static size_t __init prom_strlcpy(char *dest, const char *src, size_t size)
> +{
> + size_t ret = prom_strlen(src);
> +
> + if (size) {
> + size_t len = (ret >= size) ? size - 1 : ret;
> + memcpy(dest, src, len);
> + dest[len] = '\0';
> + }
> + return ret;
> +}
> +
> +
> static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
> {
> const unsigned char *su1, *su2;
> @@ -778,9 +783,9 @@ static void __init early_cmdline_parse(void)
> if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0)
> l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
>
> - if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0')
> - prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
> - sizeof(prom_cmd_line));
> + if (l <= 0 || p[0] == '\0') /* dbl check */
> + cmdline_add_builtin_custom(prom_cmd_line, NULL, sizeof(prom_cmd_line),
> + __prombss, &prom_strlcpy, &prom_strlcat);
>
> prom_printf("command line: %s\n", prom_cmd_line);
>
> @@ -2706,7 +2711,7 @@ static void __init flatten_device_tree(void)
>
> /* Add "phandle" in there, we'll need it */
> namep = make_room(&mem_start, &mem_end, 16, 1);
> - prom_strcpy(namep, "phandle");
> + prom_strlcpy(namep, "phandle", 8);
> mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
>
> /* Build string array */
>
Le 04/03/2021 à 05:48, Daniel Walker a écrit :
> This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
> option.
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
#143: FILE: arch/powerpc/kernel/prom_init.c:788:
+ cmdline_add_builtin_custom(prom_cmd_line, NULL, sizeof(prom_cmd_line),
+ __prombss, &prom_strlcpy, &prom_strlcat);
total: 0 errors, 0 warnings, 1 checks, 117 lines checked
NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.
the.patch has style problems, please review.
NOTE: Ignored message types: ARCH_INCLUDE_LINUX BIT_MACRO COMPARISON_TO_NULL DT_SPLIT_BINDING_PATCH
EMAIL_SUBJECT FILE_PATH_CHANGES GLOBAL_INITIALISERS LINE_SPACING MULTIPLE_ASSIGNMENTS
NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
>
> Cc: [email protected]
> Signed-off-by: Ruslan Ruslichenko <[email protected]>
> Signed-off-by: Ruslan Bilovol <[email protected]>
> Signed-off-by: Daniel Walker <[email protected]>
> ---
> arch/powerpc/Kconfig | 37 +--------------------------------
> arch/powerpc/kernel/prom.c | 1 +
> arch/powerpc/kernel/prom_init.c | 31 +++++++++++++++------------
> 3 files changed, 20 insertions(+), 49 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 107bb4319e0e..276b06d5c961 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -167,6 +167,7 @@ config PPC
> select EDAC_SUPPORT
> select GENERIC_ATOMIC64 if PPC32
> select GENERIC_CLOCKEVENTS_BROADCAST if SMP
> + select GENERIC_CMDLINE
> select GENERIC_CMOS_UPDATE
> select GENERIC_CPU_AUTOPROBE
> select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC
> @@ -906,42 +907,6 @@ config PPC_DENORMALISATION
> Add support for handling denormalisation of single precision
> values. Useful for bare metal only. If unsure say Y here.
>
> -config CMDLINE
> - string "Initial kernel command string"
> - default ""
> - help
> - On some platforms, there is currently no way for the boot loader to
> - pass arguments to the kernel. For these platforms, you can supply
> - some command-line options at build time by entering them here. In
> - most cases you will need to specify the root device here.
> -
> -choice
> - prompt "Kernel command line type" if CMDLINE != ""
> - default CMDLINE_FROM_BOOTLOADER
> -
> -config CMDLINE_FROM_BOOTLOADER
> - bool "Use bootloader kernel arguments if available"
> - help
> - Uses the command-line options passed by the boot loader. If
> - the boot loader doesn't provide any, the default kernel command
> - string provided in CMDLINE will be used.
> -
> -config CMDLINE_EXTEND
> - bool "Extend bootloader kernel arguments"
> - help
> - The command-line arguments provided by the boot loader will be
> - appended to the default kernel command string.
> -
> -config CMDLINE_FORCE
> - bool "Always use the default kernel command string"
> - help
> - Always use the default kernel command string, even if the boot
> - loader passes other arguments to the kernel.
> - This is useful if you cannot or don't want to change the
> - command-line options your boot loader passes to the kernel.
> -
> -endchoice
> -
> config EXTRA_TARGETS
> string "Additional default image types"
> help
> diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
> index ae3c41730367..96d0a01be1b4 100644
> --- a/arch/powerpc/kernel/prom.c
> +++ b/arch/powerpc/kernel/prom.c
> @@ -27,6 +27,7 @@
> #include <linux/irq.h>
> #include <linux/memblock.h>
> #include <linux/of.h>
> +#include <linux/cmdline.h>
> #include <linux/of_fdt.h>
> #include <linux/libfdt.h>
> #include <linux/cpu.h>
> diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
> index e9d4eb6144e1..d752be688b62 100644
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -27,6 +27,7 @@
> #include <linux/initrd.h>
> #include <linux/bitops.h>
> #include <linux/pgtable.h>
> +#include <linux/cmdline.h>
> #include <asm/prom.h>
> #include <asm/rtas.h>
> #include <asm/page.h>
> @@ -242,15 +243,6 @@ static int __init prom_strcmp(const char *cs, const char *ct)
> return 0;
> }
>
> -static char __init *prom_strcpy(char *dest, const char *src)
> -{
> - char *tmp = dest;
> -
> - while ((*dest++ = *src++) != '\0')
> - /* nothing */;
> - return tmp;
> -}
> -
> static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
> {
> unsigned char c1, c2;
> @@ -276,6 +268,19 @@ static size_t __init prom_strlen(const char *s)
> return sc - s;
> }
>
> +static size_t __init prom_strlcpy(char *dest, const char *src, size_t size)
> +{
> + size_t ret = prom_strlen(src);
> +
> + if (size) {
> + size_t len = (ret >= size) ? size - 1 : ret;
> + memcpy(dest, src, len);
> + dest[len] = '\0';
> + }
> + return ret;
> +}
> +
> +
> static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
> {
> const unsigned char *su1, *su2;
> @@ -778,9 +783,9 @@ static void __init early_cmdline_parse(void)
> if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0)
> l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
>
> - if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0')
> - prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
> - sizeof(prom_cmd_line));
> + if (l <= 0 || p[0] == '\0') /* dbl check */
> + cmdline_add_builtin_custom(prom_cmd_line, NULL, sizeof(prom_cmd_line),
> + __prombss, &prom_strlcpy, &prom_strlcat);
>
> prom_printf("command line: %s\n", prom_cmd_line);
>
> @@ -2706,7 +2711,7 @@ static void __init flatten_device_tree(void)
>
> /* Add "phandle" in there, we'll need it */
> namep = make_room(&mem_start, &mem_end, 16, 1);
> - prom_strcpy(namep, "phandle");
> + prom_strlcpy(namep, "phandle", 8);
> mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
>
> /* Build string array */
>