linux/kernel/system_certificates.S

#include <linux/export.h>
#include <linux/init.h>

	__INITRODATA

	.globl VMLINUX_SYMBOL(system_certificate_list)
VMLINUX_SYMBOL(system_certificate_list):
	.incbin "kernel/x509_certificate_list"
	.globl VMLINUX_SYMBOL(system_certificate_list_end)
VMLINUX_SYMBOL(system_certificate_list_end):
CONFIG_SYMBOL_PREFIX: cleanup. We have CONFIG_SYMBOL_PREFIX, which three archs define to the string "_". But Al Viro broke this in "consolidate cond_syscall and SYSCALL_ALIAS declarations" (in linux-next), and he's not the first to do so. Using CONFIG_SYMBOL_PREFIX is awkward, since we usually just want to prefix it so something. So various places define helpers which are defined to nothing if CONFIG_SYMBOL_PREFIX isn't set: 1) include/asm-generic/unistd.h defines __SYMBOL_PREFIX. 2) include/asm-generic/vmlinux.lds.h defines VMLINUX_SYMBOL(sym) 3) include/linux/export.h defines MODULE_SYMBOL_PREFIX. 4) include/linux/kernel.h defines SYMBOL_PREFIX (which differs from #7) 5) kernel/modsign_certificate.S defines ASM_SYMBOL(sym) 6) scripts/modpost.c defines MODULE_SYMBOL_PREFIX 7) scripts/Makefile.lib defines SYMBOL_PREFIX on the commandline if CONFIG_SYMBOL_PREFIX is set, so that we have a non-string version for pasting. (arch/h8300/include/asm/linkage.h defines SYMBOL_NAME(), too). Let's solve this properly: 1) No more generic prefix, just CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX. 2) Make linux/export.h usable from asm. 3) Define VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR(). 4) Make everyone use them. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: James Hogan <james.hogan@imgtec.com> Tested-by: James Hogan <james.hogan@imgtec.com> (metag) 2013-03-15 15:04:17 +10:30			`#include <linux/export.h>`
KEYS: Separate the kernel signature checking keyring from module signing Separate the kernel signature checking keyring from module signing so that it can be used by code other than the module-signing code. Signed-off-by: David Howells <dhowells@redhat.com> 2013-08-30 16:07:30 +01:00			`#include <linux/init.h>`
MODSIGN: Avoid using .incbin in C source Using the asm .incbin statement in C sources breaks any gcc wrapper which assumes that preprocessed C source is self-contained. Use a separate .S file to include the siging key and certificate. [ This means we no longer need SYMBOL_PREFIX which is defined in kernel.h from cbdbf2abb7844548a7d7a6a2ae7af6b6fbcea401, so I removed it -- RR ] Tested-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: James Hogan <james.hogan@imgtec.com> 2012-12-11 11:37:13 +10:30
KEYS: Separate the kernel signature checking keyring from module signing Separate the kernel signature checking keyring from module signing so that it can be used by code other than the module-signing code. Signed-off-by: David Howells <dhowells@redhat.com> 2013-08-30 16:07:30 +01:00			`__INITRODATA`
MODSIGN: Avoid using .incbin in C source Using the asm .incbin statement in C sources breaks any gcc wrapper which assumes that preprocessed C source is self-contained. Use a separate .S file to include the siging key and certificate. [ This means we no longer need SYMBOL_PREFIX which is defined in kernel.h from cbdbf2abb7844548a7d7a6a2ae7af6b6fbcea401, so I removed it -- RR ] Tested-by: Michal Marek <mmarek@suse.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: James Hogan <james.hogan@imgtec.com> 2012-12-11 11:37:13 +10:30
kernel/system_certificate.S: use real contents instead of macro GLOBAL() If a macro is only used within 2 times, and also its contents are within 2 lines, recommend to expand it to shrink code line. For our case, the macro is not portable either: some architectures' assembler may use another character to mark newline in a macro (e.g. '`' for arc), which will cause issue. If still want to use macro and let it portable enough, it will also need include additional header file (e.g "#include <linux/linkage.h>", although it also need be fixed). Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: David Howells <dhowells@redhat.com> 2013-10-30 09:11:28 +08:00			`.globl VMLINUX_SYMBOL(system_certificate_list)`
			`VMLINUX_SYMBOL(system_certificate_list):`
KEYS: Load .x509 files into kernel keyring Load all the files matching the pattern ".x509" that are to be found in kernel base source dir and base build dir into the module signing keyring. The "extra_certificates" file is then redundant. Signed-off-by: David Howells <dhowells@redhat.com> 2013-08-30 16:07:13 +01:00			`.incbin "kernel/x509_certificate_list"`
kernel/system_certificate.S: use real contents instead of macro GLOBAL() If a macro is only used within 2 times, and also its contents are within 2 lines, recommend to expand it to shrink code line. For our case, the macro is not portable either: some architectures' assembler may use another character to mark newline in a macro (e.g. '`' for arc), which will cause issue. If still want to use macro and let it portable enough, it will also need include additional header file (e.g "#include <linux/linkage.h>", although it also need be fixed). Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: David Howells <dhowells@redhat.com> 2013-10-30 09:11:28 +08:00			`.globl VMLINUX_SYMBOL(system_certificate_list_end)`
			`VMLINUX_SYMBOL(system_certificate_list_end):`