scripts/kconfig/confdata.c | 16 +++++++++++++++- scripts/kconfig/symbol.c | 16 +++++++++++++++- scripts/kconfig/util.c | 17 ++++++++++++++++- 3 files changed, 46 insertions(+), 3 deletions(-)
Signed-off-by: Biancaa Ramesh <biancaa2210329@ssn.edu.in>
---
scripts/kconfig/confdata.c | 16 +++++++++++++++-
scripts/kconfig/symbol.c | 16 +++++++++++++++-
scripts/kconfig/util.c | 17 ++++++++++++++++-
3 files changed, 46 insertions(+), 3 deletions(-)
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 9599a0408862..c0fef4cd6b60 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -22,6 +22,20 @@
#include "internal.h"
#include "lkc.h"
+#define HAVE_STRSCPY 0
+#ifndef HAVE_STRSCPY
+static size_t strscpy(char *dest, const char *src, size_t count)
+{
+ size_t i;
+ if (count == 0)
+ return 0;
+ for (i = 0; i < count - 1 && src[i]; i++)
+ dest[i] = src[i];
+ dest[i] = '\0';
+ return i;
+}
+#endif
+
struct gstr autoconf_cmd;
/* return true if 'path' exists, false otherwise */
@@ -140,7 +154,7 @@ static int conf_touch_dep(const char *name)
if (depfile_prefix_len + strlen(name) + 1 > sizeof(depfile_path))
return -1;
- strcpy(depfile_path + depfile_prefix_len, name);
+ strscpy(depfile_path + depfile_prefix_len, name);
fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1)
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 7e81b3676ee9..0c6746854617 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -14,6 +14,20 @@
#include "internal.h"
#include "lkc.h"
+#define HAVE_STRSCPY 0
+#ifndef HAVE_STRSCPY
+static size_t strscpy(char *dest, const char *src, size_t count)
+{
+ size_t i;
+ if (count == 0)
+ return 0;
+ for (i = 0; i < count - 1 && src[i]; i++)
+ dest[i] = src[i];
+ dest[i] = '\0';
+ return i;
+}
+#endif
+
struct symbol symbol_yes = {
.name = "y",
.type = S_TRISTATE,
@@ -795,7 +809,7 @@ bool sym_set_string_value(struct symbol *sym, const char *newval)
else
return true;
- strcpy(val, newval);
+ strscpy(val, newval);
free((void *)oldval);
sym_clear_all_valid();
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index 5cdcee144b58..176ec03bb3f0 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -13,6 +13,21 @@
#include <xalloc.h>
#include "lkc.h"
+#define HAVE_STRSCPY 0
+#ifndef HAVE_STRSCPY
+static size_t strscpy(char *dest, const char *src, size_t count)
+{
+ size_t i;
+ if (count == 0)
+ return 0;
+ for (i = 0; i < count - 1 && src[i]; i++)
+ dest[i] = src[i];
+ dest[i] = '\0';
+ return i;
+}
+#endif
+
+
/* hash table of all parsed Kconfig files */
static HASHTABLE_DEFINE(file_hashtable, 1U << 11);
@@ -52,7 +67,7 @@ struct gstr str_new(void)
gs.s = xmalloc(sizeof(char) * 64);
gs.len = 64;
gs.max_width = 0;
- strcpy(gs.s, "\0");
+ strscpy(gs.s, "\0");
return gs;
}
--
2.43.0
--
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ssn.edu.in <http://www.ssn.edu.in/>Hi Biancaa,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.18-rc2 next-20251022]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Biancaa-Ramesh/Kconfig-Uses-glibc-so-strscpy-has-to-be-manually-added/20251022-011608
base: linus/master
patch link: https://lore.kernel.org/r/20251021171446.46942-1-biancaa2210329%40ssn.edu.in
patch subject: [PATCH] Kconfig:Uses glibc so strscpy has to be manually- added
config: x86_64-randconfig-002-20251022 (attached as .config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251022/202510221515.tlpfL3lX-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510221515.tlpfL3lX-lkp@intel.com/
All errors (new ones prefixed by >>):
>> scripts/kconfig/confdata.c:157:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
157 | strscpy(depfile_path + depfile_prefix_len, name);
| ^
>> scripts/kconfig/util.c:70:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
70 | strscpy(gs.s, "\0");
| ^
scripts/kconfig/symbol.c1 error generated.
:812:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
812 | strscpy(val, newval);
| ^
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/util.o] Error 1 shuffle=3058352405
1 error generated.
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/confdata.o] Error 1 shuffle=3058352405
1 error generated.
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/symbol.o] Error 1 shuffle=3058352405
make[3]: Target 'oldconfig' not remade because of errors.
make[2]: *** [Makefile:742: oldconfig] Error 2 shuffle=3058352405
make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=3058352405
make[1]: Target 'oldconfig' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2 shuffle=3058352405
make: Target 'oldconfig' not remade because of errors.
--
>> scripts/kconfig/symbol.c:812:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
812 | strscpy(val, newval);
| ^
>> scripts/kconfig/confdata.c:157:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
157 | strscpy(depfile_path + depfile_prefix_len, name);
| ^
>> scripts/kconfig/util.c:70:2: error: call to undeclared function 'strscpy'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
70 | strscpy(gs.s, "\0");
| ^
1 error generated.
1 error generated.
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/confdata.o] Error 1 shuffle=3058352405
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/util.o] Error 1 shuffle=3058352405
1 error generated.
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/symbol.o] Error 1 shuffle=3058352405
make[3]: Target 'olddefconfig' not remade because of errors.
make[2]: *** [Makefile:742: olddefconfig] Error 2 shuffle=3058352405
make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=3058352405
make[1]: Target 'olddefconfig' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2 shuffle=3058352405
make: Target 'olddefconfig' not remade because of errors.
vim +/strscpy +157 scripts/kconfig/confdata.c
147
148 /* touch depfile for symbol 'name' */
149 static int conf_touch_dep(const char *name)
150 {
151 int fd;
152
153 /* check overflow: prefix + name + '\0' must fit in buffer. */
154 if (depfile_prefix_len + strlen(name) + 1 > sizeof(depfile_path))
155 return -1;
156
> 157 strscpy(depfile_path + depfile_prefix_len, name);
158
159 fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
160 if (fd == -1)
161 return -1;
162 close(fd);
163
164 return 0;
165 }
166
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Biancaa,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.18-rc2 next-20251022]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Biancaa-Ramesh/Kconfig-Uses-glibc-so-strscpy-has-to-be-manually-added/20251022-011608
base: linus/master
patch link: https://lore.kernel.org/r/20251021171446.46942-1-biancaa2210329%40ssn.edu.in
patch subject: [PATCH] Kconfig:Uses glibc so strscpy has to be manually- added
config: arm-randconfig-r071-20251022 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251022/202510221519.nzy5mUJ3-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510221519.nzy5mUJ3-lkp@intel.com/
All errors (new ones prefixed by >>):
scripts/kconfig/util.c: In function 'str_new':
>> scripts/kconfig/util.c:70:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
70 | strscpy(gs.s, "\0");
| ^~~~~~~
| strlcpy
scripts/kconfig/symbol.c: In function 'sym_set_string_value':
>> scripts/kconfig/symbol.c:812:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
812 | strscpy(val, newval);
| ^~~~~~~
| strlcpy
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/util.o] Error 1
scripts/kconfig/confdata.c: In function 'conf_touch_dep':
>> scripts/kconfig/confdata.c:157:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
157 | strscpy(depfile_path + depfile_prefix_len, name);
| ^~~~~~~
| strlcpy
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/confdata.o] Error 1
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/symbol.o] Error 1
make[3]: Target 'oldconfig' not remade because of errors.
make[2]: *** [Makefile:742: oldconfig] Error 2
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'oldconfig' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'oldconfig' not remade because of errors.
--
scripts/kconfig/util.c: In function 'str_new':
>> scripts/kconfig/util.c:70:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
70 | strscpy(gs.s, "\0");
| ^~~~~~~
| strlcpy
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/util.o] Error 1
scripts/kconfig/confdata.c: In function 'conf_touch_dep':
>> scripts/kconfig/confdata.c:157:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
157 | strscpy(depfile_path + depfile_prefix_len, name);
| ^~~~~~~
| strlcpy
scripts/kconfig/symbol.c: In function 'sym_set_string_value':
>> scripts/kconfig/symbol.c:812:9: error: implicit declaration of function 'strscpy'; did you mean 'strlcpy'? [-Wimplicit-function-declaration]
812 | strscpy(val, newval);
| ^~~~~~~
| strlcpy
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/confdata.o] Error 1
make[3]: *** [scripts/Makefile.host:131: scripts/kconfig/symbol.o] Error 1
make[3]: Target 'olddefconfig' not remade because of errors.
make[2]: *** [Makefile:742: olddefconfig] Error 2
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Target 'olddefconfig' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2
make: Target 'olddefconfig' not remade because of errors.
vim +70 scripts/kconfig/util.c
62
63 /* Allocate initial growable string */
64 struct gstr str_new(void)
65 {
66 struct gstr gs;
67 gs.s = xmalloc(sizeof(char) * 64);
68 gs.len = 64;
69 gs.max_width = 0;
> 70 strscpy(gs.s, "\0");
71 return gs;
72 }
73
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
… > --- > scripts/kconfig/confdata.c | 16 +++++++++++++++- > scripts/kconfig/symbol.c | 16 +++++++++++++++- > scripts/kconfig/util.c | 17 ++++++++++++++++- … You would like to use the function “strscpy” in these source files. I miss some information so far. 1. Helpful change description https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.18-rc2#n45 2. Nicer summary phrase 3. More appropriate recipient selection https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.18-rc2#n231 … > -- > ::DISCLAIMER:: … > The > contents of this e-mail and any attachment(s) are confidential and … Please reconsider such hints once more for communication by the means of public mailing lists. https://subspace.kernel.org/etiquette.html#do-not-include-confidentiality-disclaimers Regards, Markus
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