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| author | David Howells <dhowells@redhat.com> | 2008-02-08 04:19:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:30 -0800 |
| commit | 7fa3031500ec9b0a7460c8c23751799006ffee74 (patch) | |
| tree | 2a7e9202b35a39dc8217e95825263c0629e67e35 /arch/sparc64 | |
| parent | b0b933c08bd5fd053bbba8ba6387f543be03d49f (diff) | |
| download | linux-7fa3031500ec9b0a7460c8c23751799006ffee74.tar.gz linux-7fa3031500ec9b0a7460c8c23751799006ffee74.tar.bz2 linux-7fa3031500ec9b0a7460c8c23751799006ffee74.zip | |
aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUT
Suppress A.OUT library support if CONFIG_ARCH_SUPPORTS_AOUT is not set.
Not all architectures support the A.OUT binfmt, so the ELF binfmt should not
be permitted to go looking for A.OUT libraries to load in such a case. Not
only that, but under such conditions A.OUT core dumps are not produced either.
To make this work, this patch also does the following:
(1) Makes the existence of the contents of linux/a.out.h contingent on
CONFIG_ARCH_SUPPORTS_AOUT.
(2) Renames dump_thread() to aout_dump_thread() as it's only called by A.OUT
core dumping code.
(3) Moves aout_dump_thread() into asm/a.out-core.h and makes it inline. This
is then included only where needed. This means that this bit of arch
code will be stored in the appropriate A.OUT binfmt module rather than
the core kernel.
(4) Drops A.OUT support for Blackfin (according to Mike Frysinger it's not
needed) and FRV.
This patch depends on the previous patch to move STACK_TOP[_MAX] out of
asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT
format is available.
[jdike@addtoit.com: uml: re-remove accidentally restored code]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/binfmt_aout32.c | 3 | ||||
| -rw-r--r-- | arch/sparc64/kernel/process.c | 11 |
2 files changed, 2 insertions, 12 deletions
diff --git a/arch/sparc64/kernel/binfmt_aout32.c b/arch/sparc64/kernel/binfmt_aout32.c index 92c1b36a2e16..9877f2d7672d 100644 --- a/arch/sparc64/kernel/binfmt_aout32.c +++ b/arch/sparc64/kernel/binfmt_aout32.c @@ -32,6 +32,7 @@ #include <asm/uaccess.h> #include <asm/pgalloc.h> #include <asm/mmu_context.h> +#include <asm/a.out-core.h> static int load_aout32_binary(struct linux_binprm *, struct pt_regs * regs); static int load_aout32_library(struct file*); @@ -101,7 +102,7 @@ static int aout32_core_dump(long signr, struct pt_regs *regs, struct file *file, current->flags |= PF_DUMPCORE; strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm)); dump.signal = signr; - dump_thread(regs, &dump); + aout_dump_thread(regs, &dump); /* If the size of the dump file exceeds the rlimit, then see what would happen if we wrote the stack, but not the data area. */ diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index ca7cdfd55f72..6e21785bb36d 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -725,17 +725,6 @@ pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) return retval; } -/* - * fill in the user structure for a core dump.. - */ -void dump_thread(struct pt_regs * regs, struct user * dump) -{ - /* Only should be used for SunOS and ancient a.out - * SparcLinux binaries... Not worth implementing. - */ - memset(dump, 0, sizeof(struct user)); -} - typedef struct { union { unsigned int pr_regs[32]; |