On an architecture that supports 32-bit compat we need to claim to be PER_LINUX even if we're actually PER_LINUX32. Instead of duplicating the code for that in all architectures and having various bugs in the handling of personality flags do it once and right in the common code. Signed-off-by: Christoph Hellwig <hch@xxxxxx> Index: linux-2.6/arch/ia64/ia32/ia32_entry.S =================================================================== --- linux-2.6.orig/arch/ia64/ia32/ia32_entry.S 2010-01-09 15:59:17.798254100 +0100 +++ linux-2.6/arch/ia64/ia32/ia32_entry.S 2010-01-09 15:59:53.246257041 +0100 @@ -314,7 +314,7 @@ ia32_syscall_table: data8 sys_fchdir data8 sys_ni_syscall /* sys_bdflush */ data8 sys_sysfs /* 135 */ - data8 sys32_personality + data8 sys_personality data8 sys_ni_syscall /* for afs_syscall */ data8 sys_setfsuid /* 16-bit version */ data8 sys_setfsgid /* 16-bit version */ Index: linux-2.6/arch/ia64/ia32/sys_ia32.c =================================================================== --- linux-2.6.orig/arch/ia64/ia32/sys_ia32.c 2010-01-09 15:54:26.822004121 +0100 +++ linux-2.6/arch/ia64/ia32/sys_ia32.c 2010-01-09 15:59:34.255256737 +0100 @@ -1867,19 +1867,6 @@ sys32_sendfile (int out_fd, int in_fd, i return ret; } -asmlinkage long -sys32_personality (unsigned int personality) -{ - long ret; - - if (current->personality == PER_LINUX32 && personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} - asmlinkage unsigned long sys32_brk (unsigned int brk) { Index: linux-2.6/arch/mips/kernel/linux32.c =================================================================== --- linux-2.6.orig/arch/mips/kernel/linux32.c 2010-01-09 15:54:26.833004126 +0100 +++ linux-2.6/arch/mips/kernel/linux32.c 2010-01-09 16:02:21.474255762 +0100 @@ -266,19 +266,6 @@ SYSCALL_DEFINE1(32_newuname, struct new_ return ret; } -SYSCALL_DEFINE1(32_personality, unsigned long, personality) -{ - int ret; - personality &= 0xffffffff; - if (personality(current->personality) == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} - SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd, compat_off_t __user *, offset, s32, count) { Index: linux-2.6/arch/mips/kernel/scall64-n32.S =================================================================== --- linux-2.6.orig/arch/mips/kernel/scall64-n32.S 2010-01-09 16:02:16.619010490 +0100 +++ linux-2.6/arch/mips/kernel/scall64-n32.S 2010-01-09 16:02:25.979009804 +0100 @@ -252,7 +252,7 @@ EXPORT(sysn32_call_table) PTR sys32_sigaltstack PTR compat_sys_utime /* 6130 */ PTR sys_mknod - PTR sys_32_personality + PTR sys_personality PTR compat_sys_ustat PTR compat_sys_statfs PTR compat_sys_fstatfs /* 6135 */ Index: linux-2.6/arch/mips/kernel/scall64-o32.S =================================================================== --- linux-2.6.orig/arch/mips/kernel/scall64-o32.S 2010-01-09 16:02:16.629003942 +0100 +++ linux-2.6/arch/mips/kernel/scall64-o32.S 2010-01-09 16:02:30.447006413 +0100 @@ -339,7 +339,7 @@ sys_call_table: PTR sys_fchdir PTR sys_bdflush PTR sys_sysfs /* 4135 */ - PTR sys_32_personality + PTR sys_personality PTR sys_ni_syscall /* for afs_syscall */ PTR sys_setfsuid PTR sys_setfsgid Index: linux-2.6/arch/parisc/kernel/sys_parisc.c =================================================================== --- linux-2.6.orig/arch/parisc/kernel/sys_parisc.c 2010-01-09 15:54:26.845004188 +0100 +++ linux-2.6/arch/parisc/kernel/sys_parisc.c 2010-01-09 16:02:59.107284814 +0100 @@ -220,21 +220,6 @@ asmlinkage int sys_free_hugepages(unsign return -EINVAL; } -long parisc_personality(unsigned long personality) -{ - long err; - - if (personality(current->personality) == PER_LINUX32 - && personality == PER_LINUX) - personality = PER_LINUX32; - - err = sys_personality(personality); - if (err == PER_LINUX32) - err = PER_LINUX; - - return err; -} - long parisc_newuname(struct new_utsname __user *name) { int err = sys_newuname(name); Index: linux-2.6/arch/parisc/kernel/syscall_table.S =================================================================== --- linux-2.6.orig/arch/parisc/kernel/syscall_table.S 2010-01-09 16:03:09.201254147 +0100 +++ linux-2.6/arch/parisc/kernel/syscall_table.S 2010-01-09 16:03:19.524006340 +0100 @@ -216,7 +216,7 @@ ENTRY_SAME(fchdir) ENTRY_SAME(bdflush) ENTRY_SAME(sysfs) /* 135 */ - ENTRY_OURS(personality) + ENTRY_SAME(personality) ENTRY_SAME(ni_syscall) /* for afs_syscall */ ENTRY_SAME(setfsuid) ENTRY_SAME(setfsgid) Index: linux-2.6/arch/powerpc/include/asm/syscalls.h =================================================================== --- linux-2.6.orig/arch/powerpc/include/asm/syscalls.h 2010-01-09 16:03:50.533254207 +0100 +++ linux-2.6/arch/powerpc/include/asm/syscalls.h 2010-01-09 16:04:09.905006020 +0100 @@ -35,7 +35,6 @@ asmlinkage long sys_pipe2(int __user *fi asmlinkage long sys_rt_sigaction(int sig, const struct sigaction __user *act, struct sigaction __user *oact, size_t sigsetsize); -asmlinkage long ppc64_personality(unsigned long personality); asmlinkage int ppc_rtas(struct rtas_args __user *uargs); asmlinkage time_t sys64_time(time_t __user * tloc); asmlinkage long ppc_newuname(struct new_utsname __user * name); Index: linux-2.6/arch/powerpc/include/asm/systbl.h =================================================================== --- linux-2.6.orig/arch/powerpc/include/asm/systbl.h 2010-01-09 16:03:50.545011431 +0100 +++ linux-2.6/arch/powerpc/include/asm/systbl.h 2010-01-09 16:04:35.106016944 +0100 @@ -139,7 +139,7 @@ COMPAT_SYS_SPU(getpgid) SYSCALL_SPU(fchdir) SYSCALL_SPU(bdflush) COMPAT_SYS(sysfs) -SYSX_SPU(ppc64_personality,ppc64_personality,sys_personality) +SYSCALL_SPU(personality) SYSCALL(ni_syscall) SYSCALL_SPU(setfsuid) SYSCALL_SPU(setfsgid) Index: linux-2.6/arch/powerpc/kernel/syscalls.c =================================================================== --- linux-2.6.orig/arch/powerpc/kernel/syscalls.c 2010-01-09 15:54:26.864028329 +0100 +++ linux-2.6/arch/powerpc/kernel/syscalls.c 2010-01-09 16:04:05.443006187 +0100 @@ -102,21 +102,6 @@ ppc_select(int n, fd_set __user *inp, fd #endif #ifdef CONFIG_PPC64 -long ppc64_personality(unsigned long personality) -{ - long ret; - - if (personality(current->personality) == PER_LINUX32 - && personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} -#endif - -#ifdef CONFIG_PPC64 #define OVERRIDE_MACHINE (personality(current->personality) == PER_LINUX32) #else #define OVERRIDE_MACHINE 0 Index: linux-2.6/arch/s390/kernel/compat_wrapper.S =================================================================== --- linux-2.6.orig/arch/s390/kernel/compat_wrapper.S 2010-01-09 16:01:01.331004004 +0100 +++ linux-2.6/arch/s390/kernel/compat_wrapper.S 2010-01-09 16:01:34.845278668 +0100 @@ -615,7 +615,7 @@ sys32_sysfs_wrapper: .globl sys32_personality_wrapper sys32_personality_wrapper: llgfr %r2,%r2 # unsigned long - jg sys_s390_personality # branch to system call + jg sys_personality # branch to system call .globl sys32_setfsuid16_wrapper sys32_setfsuid16_wrapper: Index: linux-2.6/arch/s390/kernel/entry.h =================================================================== --- linux-2.6.orig/arch/s390/kernel/entry.h 2010-01-09 16:01:01.303003789 +0100 +++ linux-2.6/arch/s390/kernel/entry.h 2010-01-09 16:01:17.120005686 +0100 @@ -33,7 +33,6 @@ long sys_mmap2(struct s390_mmap_arg_stru long sys_s390_ipc(uint call, int first, unsigned long second, unsigned long third, void __user *ptr); long sys_s390_newuname(struct new_utsname __user *name); -long sys_s390_personality(unsigned long personality); long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice); long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args); Index: linux-2.6/arch/s390/kernel/sys_s390.c =================================================================== --- linux-2.6.orig/arch/s390/kernel/sys_s390.c 2010-01-09 15:54:26.875004240 +0100 +++ linux-2.6/arch/s390/kernel/sys_s390.c 2010-01-09 16:01:35.909033444 +0100 @@ -141,19 +141,6 @@ SYSCALL_DEFINE1(s390_newuname, struct ne } return ret; } - -SYSCALL_DEFINE1(s390_personality, unsigned long, personality) -{ - int ret; - - if (current->personality == PER_LINUX32 && personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - - return ret; -} #endif /* CONFIG_64BIT */ /* Index: linux-2.6/arch/s390/kernel/syscalls.S =================================================================== --- linux-2.6.orig/arch/s390/kernel/syscalls.S 2010-01-09 16:01:01.321004266 +0100 +++ linux-2.6/arch/s390/kernel/syscalls.S 2010-01-09 16:01:25.248256321 +0100 @@ -144,7 +144,7 @@ SYSCALL(sys_getpgid,sys_getpgid,sys32_ge SYSCALL(sys_fchdir,sys_fchdir,sys32_fchdir_wrapper) SYSCALL(sys_bdflush,sys_bdflush,sys32_bdflush_wrapper) SYSCALL(sys_sysfs,sys_sysfs,sys32_sysfs_wrapper) /* 135 */ -SYSCALL(sys_personality,sys_s390_personality,sys32_personality_wrapper) +SYSCALL(sys_personality,sys_personality,sys32_personality_wrapper) NI_SYSCALL /* for afs_syscall */ SYSCALL(sys_setfsuid16,sys_ni_syscall,sys32_setfsuid16_wrapper) /* old setfsuid16 syscall */ SYSCALL(sys_setfsgid16,sys_ni_syscall,sys32_setfsgid16_wrapper) /* old setfsgid16 syscall */ Index: linux-2.6/arch/sparc/kernel/sys_sparc_64.c =================================================================== --- linux-2.6.orig/arch/sparc/kernel/sys_sparc_64.c 2010-01-09 15:54:26.892253994 +0100 +++ linux-2.6/arch/sparc/kernel/sys_sparc_64.c 2010-01-09 16:05:19.386006452 +0100 @@ -522,20 +522,6 @@ SYSCALL_DEFINE1(sparc64_newuname, struct return ret; } -SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality) -{ - int ret; - - if (current->personality == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - - return ret; -} - int sparc_mmap_check(unsigned long addr, unsigned long len) { if (test_thread_flag(TIF_32BIT)) { Index: linux-2.6/arch/sparc/kernel/systbls.h =================================================================== --- linux-2.6.orig/arch/sparc/kernel/systbls.h 2010-01-09 16:05:09.055003976 +0100 +++ linux-2.6/arch/sparc/kernel/systbls.h 2010-01-09 16:05:22.368014946 +0100 @@ -15,7 +15,6 @@ extern asmlinkage long sys_sparc_ipc(uns unsigned long third, void __user *ptr, long fifth); extern asmlinkage long sparc64_newuname(struct new_utsname __user *name); -extern asmlinkage long sparc64_personality(unsigned long personality); extern asmlinkage long sys64_munmap(unsigned long addr, size_t len); extern asmlinkage unsigned long sys64_mremap(unsigned long addr, unsigned long old_len, Index: linux-2.6/arch/sparc/kernel/systbls_64.S =================================================================== --- linux-2.6.orig/arch/sparc/kernel/systbls_64.S 2010-01-09 16:05:09.066003772 +0100 +++ linux-2.6/arch/sparc/kernel/systbls_64.S 2010-01-09 16:05:34.090007134 +0100 @@ -56,7 +56,7 @@ sys_call_table32: .word sys_setsid, sys_fchdir, sys32_fgetxattr, sys_listxattr, sys_llistxattr /*180*/ .word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall .word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sys_sparc64_newuname -/*190*/ .word sys32_init_module, sys_sparc64_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl +/*190*/ .word sys32_init_module, sys_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl .word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask /*200*/ .word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir .word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64 @@ -131,7 +131,7 @@ sys_call_table: .word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr /*180*/ .word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall .word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_sparc64_newuname -/*190*/ .word sys_init_module, sys_sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl +/*190*/ .word sys_init_module, sys_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl .word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask /*200*/ .word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall .word sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_fadvise64 Index: linux-2.6/arch/x86/ia32/sys_ia32.c =================================================================== --- linux-2.6.orig/arch/x86/ia32/sys_ia32.c 2010-01-09 15:54:26.902011033 +0100 +++ linux-2.6/arch/x86/ia32/sys_ia32.c 2010-01-09 16:00:03.493006184 +0100 @@ -414,20 +414,6 @@ asmlinkage long sys32_pwrite(unsigned in ((loff_t)AA(poshi) << 32) | AA(poslo)); } - -asmlinkage long sys32_personality(unsigned long personality) -{ - int ret; - - if (personality(current->personality) == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} - asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count) { Index: linux-2.6/arch/x86/include/asm/sys_ia32.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/sys_ia32.h 2010-01-09 15:59:17.810253534 +0100 +++ linux-2.6/arch/x86/include/asm/sys_ia32.h 2010-01-09 15:59:50.459006232 +0100 @@ -51,7 +51,6 @@ asmlinkage long sys32_rt_sigqueueinfo(in asmlinkage long sys32_pread(unsigned int, char __user *, u32, u32, u32); asmlinkage long sys32_pwrite(unsigned int, char __user *, u32, u32, u32); -asmlinkage long sys32_personality(unsigned long); asmlinkage long sys32_sendfile(int, int, compat_off_t __user *, s32); struct oldold_utsname; Index: linux-2.6/kernel/exec_domain.c =================================================================== --- linux-2.6.orig/kernel/exec_domain.c 2010-01-09 15:54:26.811263995 +0100 +++ linux-2.6/kernel/exec_domain.c 2010-01-09 15:58:46.675006021 +0100 @@ -188,17 +188,26 @@ static int __init proc_execdomains_init( module_init(proc_execdomains_init); #endif +/* + * Get/set the personality. + * + * Note that we simply return PER_LINUX even if we actually have a 32-bit + * task (PER_LINUX32) as this is expected by 32-bit userland. + */ SYSCALL_DEFINE1(personality, u_long, personality) { u_long old = current->personality; if (personality != 0xffffffff) { + if (personality(old) == PER_LINUX32 && + personality == PER_LINUX) + personality = PER_LINUX32; set_personality(personality); if (current->personality != personality) return -EINVAL; } - return (long)old; + return (long)(old == PER_LINUX32 ? PER_LINUX : old); } -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html