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* arm64: make sys_call_table constMark Rutland2015-01-271-1/+1
| | | | | | | | | | | | As with x86, mark the sys_call_table const such that it will be placed in the .rodata section. This will cause attempts to modify the table (accidental or deliberate) to fail when strict page permissions are in place. In the absence of strict page permissions, there should be no functional change. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: Remove asm/syscalls.hCatalin Marinas2015-01-271-2/+1
| | | | | | | This patch moves the sys_rt_sigreturn_wrapper prototype to arch/arm64/kernel/sys.c and removes the asm/syscalls.h header. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: switch to generic sigaltstackAl Viro2013-02-141-1/+0
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: sanitize copy_thread(), switch to generic fork/vfork/cloneAl Viro2012-11-281-11/+0
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: get rid of fork/vfork/clone wrappersAl Viro2012-10-221-8/+3
| | | | | | | | [fixes from Catalin Marinas folded] Acked-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: Use generic sys_execve() implementationCatalin Marinas2012-10-171-22/+0
| | | | | | | | This patch converts the arm64 port to use the generic sys_execve() implementation removing the arm64-specific (compat_)sys_execve_wrapper() functions. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: Use generic kernel_execve() implementationCatalin Marinas2012-10-171-43/+0
| | | | | | | This patch enables CONFIG_GENERIC_KERNEL_EXECVE on arm64 and removes the arm64-specific implementation of kernel_execve(). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* vfs: define struct filename and have getname() return itJeff Layton2012-10-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | getname() is intended to copy pathname strings from userspace into a kernel buffer. The result is just a string in kernel space. It would however be quite helpful to be able to attach some ancillary info to the string. For instance, we could attach some audit-related info to reduce the amount of audit-related processing needed. When auditing is enabled, we could also call getname() on the string more than once and not need to recopy it from userspace. This patchset converts the getname()/putname() interfaces to return a struct instead of a string. For now, the struct just tracks the string in kernel space and the original userland pointer for it. Later, we'll add other information to the struct as it becomes convenient. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: System calls handlingCatalin Marinas2012-09-171-0/+138
This patch adds support for system calls coming from 64-bit applications. It uses the asm-generic/unistd.h definitions with the canonical set of system calls. The private system calls are only used for 32-bit (compat) applications as 64-bit ones can set the TLS and flush the caches entirely from user space. The sys_call_table is just an array defined in a C file and it contains pointers to the syscall functions. The array is 4KB aligned to allow the use of the ADRP instruction (longer range ADR) in entry.S. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
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