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* [glibc/azanella/clang] syslog: Improve fortify with clang
@ 2024-02-07 14:03 Adhemerval Zanella
0 siblings, 0 replies; 4+ messages in thread
From: Adhemerval Zanella @ 2024-02-07 14:03 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e3e14dce80be367b83adaf64352693e4482444a6
commit e3e14dce80be367b83adaf64352693e4482444a6
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Dec 5 10:40:06 2023 -0300
syslog: Improve fortify with clang
It improve fortify checks for syslog and vsyslog. The compile
and runtime hecks have similar coverage as with GCC.
The syslog fortify wrapper calls the va_arg version, since clang does
not support __va_arg_pack.
Checked on aarch64, armhf, x86_64, and i686.
Diff:
---
misc/bits/syslog.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/misc/bits/syslog.h b/misc/bits/syslog.h
index aadcd42000..100b0c78cc 100644
--- a/misc/bits/syslog.h
+++ b/misc/bits/syslog.h
@@ -36,6 +36,15 @@ syslog (int __pri, const char *__fmt, ...)
{
__syslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
+#elif __fortify_use_clang && defined __USE_MISC
+__fortify_function_error_function __attribute_overloadable__ void
+syslog (int __pri, __fortify_clang_overload_arg (const char *, , __fmt), ...)
+{
+ __gnuc_va_list __fortify_ap;
+ __builtin_va_start (__fortify_ap, __fmt);
+ __vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __fortify_ap);
+ __builtin_va_end (__fortify_ap);
+}
#elif !defined __cplusplus
# define syslog(pri, ...) \
__syslog_chk (pri, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
@@ -43,8 +52,9 @@ syslog (int __pri, const char *__fmt, ...)
#ifdef __USE_MISC
-__fortify_function void
-vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
+__fortify_function __attribute_overloadable__ void
+vsyslog (int __pri, __fortify_clang_overload_arg (const char *, ,__fmt),
+ __gnuc_va_list __ap)
{
__vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [glibc/azanella/clang] syslog: Improve fortify with clang
@ 2024-02-09 17:28 Adhemerval Zanella
0 siblings, 0 replies; 4+ messages in thread
From: Adhemerval Zanella @ 2024-02-09 17:28 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e4f4ac378722ecd5b334537671ac77f207d18538
commit e4f4ac378722ecd5b334537671ac77f207d18538
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Dec 5 10:40:06 2023 -0300
syslog: Improve fortify with clang
It improve fortify checks for syslog and vsyslog. The compile
and runtime hecks have similar coverage as with GCC.
The syslog fortify wrapper calls the va_arg version, since clang does
not support __va_arg_pack.
Checked on aarch64, armhf, x86_64, and i686.
Diff:
---
misc/bits/syslog.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/misc/bits/syslog.h b/misc/bits/syslog.h
index aadcd42000..100b0c78cc 100644
--- a/misc/bits/syslog.h
+++ b/misc/bits/syslog.h
@@ -36,6 +36,15 @@ syslog (int __pri, const char *__fmt, ...)
{
__syslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
+#elif __fortify_use_clang && defined __USE_MISC
+__fortify_function_error_function __attribute_overloadable__ void
+syslog (int __pri, __fortify_clang_overload_arg (const char *, , __fmt), ...)
+{
+ __gnuc_va_list __fortify_ap;
+ __builtin_va_start (__fortify_ap, __fmt);
+ __vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __fortify_ap);
+ __builtin_va_end (__fortify_ap);
+}
#elif !defined __cplusplus
# define syslog(pri, ...) \
__syslog_chk (pri, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
@@ -43,8 +52,9 @@ syslog (int __pri, const char *__fmt, ...)
#ifdef __USE_MISC
-__fortify_function void
-vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
+__fortify_function __attribute_overloadable__ void
+vsyslog (int __pri, __fortify_clang_overload_arg (const char *, ,__fmt),
+ __gnuc_va_list __ap)
{
__vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [glibc/azanella/clang] syslog: Improve fortify with clang
@ 2024-01-29 17:53 Adhemerval Zanella
0 siblings, 0 replies; 4+ messages in thread
From: Adhemerval Zanella @ 2024-01-29 17:53 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0b648bd88e511202d44a829b2e12b8d3ebb590ff
commit 0b648bd88e511202d44a829b2e12b8d3ebb590ff
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Dec 5 10:40:06 2023 -0300
syslog: Improve fortify with clang
It improve fortify checks for syslog and vsyslog. The compile
and runtime hecks have similar coverage as with GCC.
The syslog fortify wrapper calls the va_arg version, since clang does
not support __va_arg_pack.
Checked on aarch64, armhf, x86_64, and i686.
Diff:
---
misc/bits/syslog.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/misc/bits/syslog.h b/misc/bits/syslog.h
index aadcd42000..100b0c78cc 100644
--- a/misc/bits/syslog.h
+++ b/misc/bits/syslog.h
@@ -36,6 +36,15 @@ syslog (int __pri, const char *__fmt, ...)
{
__syslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
+#elif __fortify_use_clang && defined __USE_MISC
+__fortify_function_error_function __attribute_overloadable__ void
+syslog (int __pri, __fortify_clang_overload_arg (const char *, , __fmt), ...)
+{
+ __gnuc_va_list __fortify_ap;
+ __builtin_va_start (__fortify_ap, __fmt);
+ __vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __fortify_ap);
+ __builtin_va_end (__fortify_ap);
+}
#elif !defined __cplusplus
# define syslog(pri, ...) \
__syslog_chk (pri, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
@@ -43,8 +52,9 @@ syslog (int __pri, const char *__fmt, ...)
#ifdef __USE_MISC
-__fortify_function void
-vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
+__fortify_function __attribute_overloadable__ void
+vsyslog (int __pri, __fortify_clang_overload_arg (const char *, ,__fmt),
+ __gnuc_va_list __ap)
{
__vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [glibc/azanella/clang] syslog: Improve fortify with clang
@ 2023-12-21 18:50 Adhemerval Zanella
0 siblings, 0 replies; 4+ messages in thread
From: Adhemerval Zanella @ 2023-12-21 18:50 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2c3f0b6815a1c7846f930980085f25275b14c386
commit 2c3f0b6815a1c7846f930980085f25275b14c386
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Dec 5 10:40:06 2023 -0300
syslog: Improve fortify with clang
It improve fortify checks for syslog and vsyslog. The compile
and runtime hecks have similar coverage as with GCC.
The syslog fortify wrapper calls the va_arg version, since clang does
not support __va_arg_pack.
Checked on aarch64, armhf, x86_64, and i686.
Diff:
---
misc/bits/syslog.h | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/misc/bits/syslog.h b/misc/bits/syslog.h
index d7de90ed14..969ce9e431 100644
--- a/misc/bits/syslog.h
+++ b/misc/bits/syslog.h
@@ -36,6 +36,15 @@ syslog (int __pri, const char *__fmt, ...)
{
__syslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
}
+#elif __fortify_use_clang && defined __USE_MISC
+__fortify_function_error_function __attribute_overloadable__ void
+syslog (int __pri, __fortify_clang_overload_arg (const char *, , __fmt), ...)
+{
+ __gnuc_va_list __fortify_ap;
+ __builtin_va_start (__fortify_ap, __fmt);
+ __vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __fortify_ap);
+ __builtin_va_end (__fortify_ap);
+}
#elif !defined __cplusplus
# define syslog(pri, ...) \
__syslog_chk (pri, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
@@ -43,8 +52,9 @@ syslog (int __pri, const char *__fmt, ...)
#ifdef __USE_MISC
-__fortify_function void
-vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
+__fortify_function __attribute_overloadable__ void
+vsyslog (int __pri, __fortify_clang_overload_arg (const char *, ,__fmt),
+ __gnuc_va_list __ap)
{
__vsyslog_chk (__pri, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
}
^ permalink raw reply [flat|nested] 4+ messages in thread
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