diff options
| author | Helge Deller <deller@gmx.de> | 2015-11-06 23:36:01 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2015-11-08 20:27:01 +0100 |
| commit | d0cf62fb63f760e98244d31396b3b58f3a1e326b (patch) | |
| tree | 8e8b2587b5b0e5f1e1206fba61144f75fa046934 /arch/parisc/mm | |
| parent | 338f169a456a42905b81ac90fc9d7c00ca4dbde4 (diff) | |
parisc: Fixes and cleanups in kernel uapi header files
This patch fixes some bugs and partly cleans up the parisc uapi header
files to what glibc defined:
- compat_semid64_ds was wrong and did not take the endianess into
account
- ipc64_perm exported userspace types which broke building userspace
packages on debian (e.g. trinity)
- ipc64_perm needs to use a 32bit mode_t on 64bit kernel
- msqid64_ds and semid64_ds needs unsigned longs for various struct members
- shmid64_ds exported size_t instead of __kernel_size_t
And finally add some compile-time checks for the sizes of those structs
to avoid future breakage.
Runtime-tested with the Linux Test Project (LTP) testsuite.
Cc: <stable@vger.kernel.org> # 3.18+
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/mm')
| -rw-r--r-- | arch/parisc/mm/init.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index c229427fa546..c5fec4890fdf 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -23,6 +23,7 @@ #include <linux/unistd.h> #include <linux/nodemask.h> /* for node_online_map */ #include <linux/pagemap.h> /* for release_pages and page_cache_release */ +#include <linux/compat.h> #include <asm/pgalloc.h> #include <asm/pgtable.h> @@ -30,6 +31,7 @@ #include <asm/pdc_chassis.h> #include <asm/mmzone.h> #include <asm/sections.h> +#include <asm/msgbuf.h> extern int data_start; extern void parisc_kernel_start(void); /* Kernel entry point in head.S */ @@ -590,6 +592,20 @@ unsigned long pcxl_dma_start __read_mostly; void __init mem_init(void) { + /* Do sanity checks on IPC (compat) structures */ + BUILD_BUG_ON(sizeof(struct ipc64_perm) != 48); +#ifndef CONFIG_64BIT + BUILD_BUG_ON(sizeof(struct semid64_ds) != 80); + BUILD_BUG_ON(sizeof(struct msqid64_ds) != 104); + BUILD_BUG_ON(sizeof(struct shmid64_ds) != 104); +#endif +#ifdef CONFIG_COMPAT + BUILD_BUG_ON(sizeof(struct compat_ipc64_perm) != sizeof(struct ipc64_perm)); + BUILD_BUG_ON(sizeof(struct compat_semid64_ds) != 80); + BUILD_BUG_ON(sizeof(struct compat_msqid64_ds) != 104); + BUILD_BUG_ON(sizeof(struct compat_shmid64_ds) != 104); +#endif + /* Do sanity checks on page table constants */ BUILD_BUG_ON(PTE_ENTRY_SIZE != sizeof(pte_t)); BUILD_BUG_ON(PMD_ENTRY_SIZE != sizeof(pmd_t)); |