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authorDavid Howells <dhowells@redhat.com>2010-08-17 23:52:56 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-17 18:07:43 -0700
commitd7627467b7a8dd6944885290a03a07ceb28c10eb (patch)
treea18c83468418e878cfb2d44e4310d81b8db84ad7 /arch/cris/arch-v10
parentda5cabf80e2433131bf0ed8993abc0f7ea618c73 (diff)
Make do_execve() take a const filename pointer
Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/cris/arch-v10')
-rw-r--r--arch/cris/arch-v10/kernel/process.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c
index 93f0f64b132..9a57db6907f 100644
--- a/arch/cris/arch-v10/kernel/process.c
+++ b/arch/cris/arch-v10/kernel/process.c
@@ -204,7 +204,9 @@ asmlinkage int sys_vfork(long r10, long r11, long r12, long r13, long mof, long
/*
* sys_execve() executes a new program.
*/
-asmlinkage int sys_execve(const char *fname, char **argv, char **envp,
+asmlinkage int sys_execve(const char *fname,
+ const char *const *argv,
+ const char *const *envp,
long r13, long mof, long srp,
struct pt_regs *regs)
{