David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 1 | /* linux/arch/sparc64/kernel/sys_sparc.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
| 3 | * This file contains various random system calls that |
| 4 | * have a non-standard calling sequence on the Linux/sparc |
| 5 | * platform. |
| 6 | */ |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/errno.h> |
| 9 | #include <linux/types.h> |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/file.h> |
| 13 | #include <linux/mm.h> |
| 14 | #include <linux/sem.h> |
| 15 | #include <linux/msg.h> |
| 16 | #include <linux/shm.h> |
| 17 | #include <linux/stat.h> |
| 18 | #include <linux/mman.h> |
| 19 | #include <linux/utsname.h> |
| 20 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/slab.h> |
| 22 | #include <linux/syscalls.h> |
| 23 | #include <linux/ipc.h> |
| 24 | #include <linux/personality.h> |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 25 | #include <linux/random.h> |
Paul Gortmaker | 066bcac | 2011-07-22 13:18:16 -0400 | [diff] [blame] | 26 | #include <linux/export.h> |
Kirill Tkhai | 812cb83 | 2013-09-14 16:02:11 +0400 | [diff] [blame] | 27 | #include <linux/context_tracking.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <asm/utrap.h> |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 31 | #include <asm/unistd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 33 | #include "entry.h" |
Sam Ravnborg | 8df5262 | 2014-05-16 23:25:54 +0200 | [diff] [blame] | 34 | #include "kernel.h" |
David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 35 | #include "systbls.h" |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | /* #define DEBUG_UNIMP_SYSCALL */ |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | asmlinkage unsigned long sys_getpagesize(void) |
| 40 | { |
| 41 | return PAGE_SIZE; |
| 42 | } |
| 43 | |
David S. Miller | 8bcd174 | 2006-03-02 18:12:27 -0800 | [diff] [blame] | 44 | /* Does addr --> addr+len fall within 4GB of the VA-space hole or |
| 45 | * overflow past the end of the 64-bit address space? |
| 46 | */ |
| 47 | static inline int invalid_64bit_range(unsigned long addr, unsigned long len) |
| 48 | { |
| 49 | unsigned long va_exclude_start, va_exclude_end; |
| 50 | |
| 51 | va_exclude_start = VA_EXCLUDE_START; |
| 52 | va_exclude_end = VA_EXCLUDE_END; |
| 53 | |
| 54 | if (unlikely(len >= va_exclude_start)) |
| 55 | return 1; |
| 56 | |
| 57 | if (unlikely((addr + len) < addr)) |
| 58 | return 1; |
| 59 | |
| 60 | if (unlikely((addr >= va_exclude_start && addr < va_exclude_end) || |
| 61 | ((addr + len) >= va_exclude_start && |
| 62 | (addr + len) < va_exclude_end))) |
| 63 | return 1; |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 68 | /* These functions differ from the default implementations in |
| 69 | * mm/mmap.c in two ways: |
| 70 | * |
| 71 | * 1) For file backed MAP_SHARED mmap()'s we D-cache color align, |
| 72 | * for fixed such mappings we just validate what the user gave us. |
| 73 | * 2) For 64-bit tasks we avoid mapping anything within 4GB of |
| 74 | * the spitfire/niagara VA-hole. |
| 75 | */ |
| 76 | |
Andrew Morton | 748ba88 | 2012-12-11 16:02:29 -0800 | [diff] [blame] | 77 | static inline unsigned long COLOR_ALIGN(unsigned long addr, |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 78 | unsigned long pgoff) |
| 79 | { |
| 80 | unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1); |
| 81 | unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1); |
| 82 | |
| 83 | return base + off; |
| 84 | } |
| 85 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) |
| 87 | { |
| 88 | struct mm_struct *mm = current->mm; |
| 89 | struct vm_area_struct * vma; |
| 90 | unsigned long task_size = TASK_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | int do_color_align; |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 92 | struct vm_unmapped_area_info info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | if (flags & MAP_FIXED) { |
| 95 | /* We do not accept a shared mapping if it would violate |
| 96 | * cache aliasing constraints. |
| 97 | */ |
| 98 | if ((flags & MAP_SHARED) && |
| 99 | ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) |
| 100 | return -EINVAL; |
| 101 | return addr; |
| 102 | } |
| 103 | |
| 104 | if (test_thread_flag(TIF_32BIT)) |
David S. Miller | d61e16d | 2006-03-17 17:33:56 -0800 | [diff] [blame] | 105 | task_size = STACK_TOP32; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 106 | if (unlikely(len > task_size || len >= VA_EXCLUDE_START)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | return -ENOMEM; |
| 108 | |
| 109 | do_color_align = 0; |
| 110 | if (filp || (flags & MAP_SHARED)) |
| 111 | do_color_align = 1; |
| 112 | |
| 113 | if (addr) { |
| 114 | if (do_color_align) |
Andrew Morton | 748ba88 | 2012-12-11 16:02:29 -0800 | [diff] [blame] | 115 | addr = COLOR_ALIGN(addr, pgoff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | else |
| 117 | addr = PAGE_ALIGN(addr); |
| 118 | |
| 119 | vma = find_vma(mm, addr); |
| 120 | if (task_size - len >= addr && |
| 121 | (!vma || addr + len <= vma->vm_start)) |
| 122 | return addr; |
| 123 | } |
| 124 | |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 125 | info.flags = 0; |
| 126 | info.length = len; |
| 127 | info.low_limit = TASK_UNMAPPED_BASE; |
| 128 | info.high_limit = min(task_size, VA_EXCLUDE_START); |
| 129 | info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; |
| 130 | info.align_offset = pgoff << PAGE_SHIFT; |
| 131 | addr = vm_unmapped_area(&info); |
| 132 | |
| 133 | if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { |
| 134 | VM_BUG_ON(addr != -ENOMEM); |
| 135 | info.low_limit = VA_EXCLUDE_END; |
| 136 | info.high_limit = task_size; |
| 137 | addr = vm_unmapped_area(&info); |
Wolfgang Wander | 1363c3c | 2005-06-21 17:14:49 -0700 | [diff] [blame] | 138 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 140 | return addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | } |
| 142 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 143 | unsigned long |
| 144 | arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, |
| 145 | const unsigned long len, const unsigned long pgoff, |
| 146 | const unsigned long flags) |
| 147 | { |
| 148 | struct vm_area_struct *vma; |
| 149 | struct mm_struct *mm = current->mm; |
David S. Miller | d61e16d | 2006-03-17 17:33:56 -0800 | [diff] [blame] | 150 | unsigned long task_size = STACK_TOP32; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 151 | unsigned long addr = addr0; |
| 152 | int do_color_align; |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 153 | struct vm_unmapped_area_info info; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 154 | |
| 155 | /* This should only ever run for 32-bit processes. */ |
| 156 | BUG_ON(!test_thread_flag(TIF_32BIT)); |
| 157 | |
| 158 | if (flags & MAP_FIXED) { |
| 159 | /* We do not accept a shared mapping if it would violate |
| 160 | * cache aliasing constraints. |
| 161 | */ |
| 162 | if ((flags & MAP_SHARED) && |
| 163 | ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) |
| 164 | return -EINVAL; |
| 165 | return addr; |
| 166 | } |
| 167 | |
| 168 | if (unlikely(len > task_size)) |
| 169 | return -ENOMEM; |
| 170 | |
| 171 | do_color_align = 0; |
| 172 | if (filp || (flags & MAP_SHARED)) |
| 173 | do_color_align = 1; |
| 174 | |
| 175 | /* requesting a specific address */ |
| 176 | if (addr) { |
| 177 | if (do_color_align) |
Andrew Morton | 748ba88 | 2012-12-11 16:02:29 -0800 | [diff] [blame] | 178 | addr = COLOR_ALIGN(addr, pgoff); |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 179 | else |
| 180 | addr = PAGE_ALIGN(addr); |
| 181 | |
| 182 | vma = find_vma(mm, addr); |
| 183 | if (task_size - len >= addr && |
| 184 | (!vma || addr + len <= vma->vm_start)) |
| 185 | return addr; |
| 186 | } |
| 187 | |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 188 | info.flags = VM_UNMAPPED_AREA_TOPDOWN; |
| 189 | info.length = len; |
| 190 | info.low_limit = PAGE_SIZE; |
| 191 | info.high_limit = mm->mmap_base; |
| 192 | info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; |
| 193 | info.align_offset = pgoff << PAGE_SHIFT; |
| 194 | addr = vm_unmapped_area(&info); |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 195 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 196 | /* |
| 197 | * A failed mmap() very likely causes application failure, |
| 198 | * so fall back to the bottom-up function here. This scenario |
| 199 | * can happen with large stack limits and large mmap() |
| 200 | * allocations. |
| 201 | */ |
Michel Lespinasse | bb64f55 | 2012-12-11 16:02:21 -0800 | [diff] [blame] | 202 | if (addr & ~PAGE_MASK) { |
| 203 | VM_BUG_ON(addr != -ENOMEM); |
| 204 | info.flags = 0; |
| 205 | info.low_limit = TASK_UNMAPPED_BASE; |
| 206 | info.high_limit = STACK_TOP32; |
| 207 | addr = vm_unmapped_area(&info); |
| 208 | } |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 209 | |
| 210 | return addr; |
| 211 | } |
| 212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | /* Try to align mapping such that we align it as much as possible. */ |
| 214 | unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags) |
| 215 | { |
| 216 | unsigned long align_goal, addr = -ENOMEM; |
Al Viro | c4caa77 | 2009-11-30 08:38:43 -0500 | [diff] [blame] | 217 | unsigned long (*get_area)(struct file *, unsigned long, |
| 218 | unsigned long, unsigned long, unsigned long); |
| 219 | |
| 220 | get_area = current->mm->get_unmapped_area; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | if (flags & MAP_FIXED) { |
| 223 | /* Ok, don't mess with it. */ |
Al Viro | c4caa77 | 2009-11-30 08:38:43 -0500 | [diff] [blame] | 224 | return get_area(NULL, orig_addr, len, pgoff, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } |
| 226 | flags &= ~MAP_SHARED; |
| 227 | |
| 228 | align_goal = PAGE_SIZE; |
| 229 | if (len >= (4UL * 1024 * 1024)) |
| 230 | align_goal = (4UL * 1024 * 1024); |
| 231 | else if (len >= (512UL * 1024)) |
| 232 | align_goal = (512UL * 1024); |
| 233 | else if (len >= (64UL * 1024)) |
| 234 | align_goal = (64UL * 1024); |
| 235 | |
| 236 | do { |
Al Viro | c4caa77 | 2009-11-30 08:38:43 -0500 | [diff] [blame] | 237 | addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | if (!(addr & ~PAGE_MASK)) { |
| 239 | addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL); |
| 240 | break; |
| 241 | } |
| 242 | |
| 243 | if (align_goal == (4UL * 1024 * 1024)) |
| 244 | align_goal = (512UL * 1024); |
| 245 | else if (align_goal == (512UL * 1024)) |
| 246 | align_goal = (64UL * 1024); |
| 247 | else |
| 248 | align_goal = PAGE_SIZE; |
| 249 | } while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE); |
| 250 | |
| 251 | /* Mapping is smaller than 64K or larger areas could not |
| 252 | * be obtained. |
| 253 | */ |
| 254 | if (addr & ~PAGE_MASK) |
Al Viro | c4caa77 | 2009-11-30 08:38:43 -0500 | [diff] [blame] | 255 | addr = get_area(NULL, orig_addr, len, pgoff, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | return addr; |
| 258 | } |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 259 | EXPORT_SYMBOL(get_fb_unmapped_area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
David S. Miller | 5a0efea | 2011-02-18 14:06:47 -0800 | [diff] [blame] | 261 | /* Essentially the same as PowerPC. */ |
| 262 | static unsigned long mmap_rnd(void) |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 263 | { |
David S. Miller | 5a0efea | 2011-02-18 14:06:47 -0800 | [diff] [blame] | 264 | unsigned long rnd = 0UL; |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 265 | |
| 266 | if (current->flags & PF_RANDOMIZE) { |
David S. Miller | 5a0efea | 2011-02-18 14:06:47 -0800 | [diff] [blame] | 267 | unsigned long val = get_random_int(); |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 268 | if (test_thread_flag(TIF_32BIT)) |
Dan McGee | fa8cbaa | 2011-10-17 13:05:23 +0000 | [diff] [blame] | 269 | rnd = (val % (1UL << (23UL-PAGE_SHIFT))); |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 270 | else |
Dan McGee | fa8cbaa | 2011-10-17 13:05:23 +0000 | [diff] [blame] | 271 | rnd = (val % (1UL << (30UL-PAGE_SHIFT))); |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 272 | } |
Dan McGee | fa8cbaa | 2011-10-17 13:05:23 +0000 | [diff] [blame] | 273 | return rnd << PAGE_SHIFT; |
David S. Miller | 5a0efea | 2011-02-18 14:06:47 -0800 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | void arch_pick_mmap_layout(struct mm_struct *mm) |
| 277 | { |
| 278 | unsigned long random_factor = mmap_rnd(); |
| 279 | unsigned long gap; |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 280 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 281 | /* |
| 282 | * Fall back to the standard layout if the personality |
| 283 | * bit is set, or if the expected stack growth is unlimited: |
| 284 | */ |
Jiri Slaby | 76704fb | 2010-01-08 00:03:26 -0800 | [diff] [blame] | 285 | gap = rlimit(RLIMIT_STACK); |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 286 | if (!test_thread_flag(TIF_32BIT) || |
| 287 | (current->personality & ADDR_COMPAT_LAYOUT) || |
Jiri Slaby | 76704fb | 2010-01-08 00:03:26 -0800 | [diff] [blame] | 288 | gap == RLIM_INFINITY || |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 289 | sysctl_legacy_va_layout) { |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 290 | mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 291 | mm->get_unmapped_area = arch_get_unmapped_area; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 292 | } else { |
| 293 | /* We know it's 32-bit */ |
David S. Miller | d61e16d | 2006-03-17 17:33:56 -0800 | [diff] [blame] | 294 | unsigned long task_size = STACK_TOP32; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 295 | |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 296 | if (gap < 128 * 1024 * 1024) |
| 297 | gap = 128 * 1024 * 1024; |
| 298 | if (gap > (task_size / 6 * 5)) |
| 299 | gap = (task_size / 6 * 5); |
| 300 | |
David S. Miller | 05f9ca8 | 2006-03-17 17:42:57 -0800 | [diff] [blame] | 301 | mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor); |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 302 | mm->get_unmapped_area = arch_get_unmapped_area_topdown; |
David S. Miller | a91690d | 2006-03-17 14:41:03 -0800 | [diff] [blame] | 303 | } |
| 304 | } |
| 305 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | /* |
| 307 | * sys_pipe() is the normal C calling standard for creating |
| 308 | * a pipe. It's not the way unix traditionally does this, though. |
| 309 | */ |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 310 | SYSCALL_DEFINE1(sparc_pipe_real, struct pt_regs *, regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | { |
| 312 | int fd[2]; |
| 313 | int error; |
| 314 | |
Ulrich Drepper | ed8cae8 | 2008-07-23 21:29:30 -0700 | [diff] [blame] | 315 | error = do_pipe_flags(fd, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | if (error) |
| 317 | goto out; |
| 318 | regs->u_regs[UREG_I1] = fd[1]; |
| 319 | error = fd[0]; |
| 320 | out: |
| 321 | return error; |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * sys_ipc() is the de-multiplexer for the SysV IPC calls.. |
| 326 | * |
| 327 | * This is really horribly ugly. |
| 328 | */ |
| 329 | |
Christoph Hellwig | baed7fc | 2010-03-10 15:21:18 -0800 | [diff] [blame] | 330 | SYSCALL_DEFINE6(sparc_ipc, unsigned int, call, int, first, unsigned long, second, |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 331 | unsigned long, third, void __user *, ptr, long, fifth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
David S. Miller | 7379b42 | 2007-10-09 20:56:31 -0700 | [diff] [blame] | 333 | long err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
| 335 | /* No need for backward compatibility. We can start fresh... */ |
| 336 | if (call <= SEMCTL) { |
| 337 | switch (call) { |
| 338 | case SEMOP: |
| 339 | err = sys_semtimedop(first, ptr, |
| 340 | (unsigned)second, NULL); |
| 341 | goto out; |
| 342 | case SEMTIMEDOP: |
| 343 | err = sys_semtimedop(first, ptr, (unsigned)second, |
David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 344 | (const struct timespec __user *) |
| 345 | (unsigned long) fifth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | goto out; |
| 347 | case SEMGET: |
| 348 | err = sys_semget(first, (int)second, (int)third); |
| 349 | goto out; |
| 350 | case SEMCTL: { |
David S. Miller | 020cfb0 | 2008-04-25 02:12:05 -0700 | [diff] [blame] | 351 | err = sys_semctl(first, second, |
| 352 | (int)third | IPC_64, |
Al Viro | e1fd1f4 | 2013-03-05 15:04:55 -0500 | [diff] [blame] | 353 | (unsigned long) ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | goto out; |
| 355 | } |
| 356 | default: |
| 357 | err = -ENOSYS; |
| 358 | goto out; |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 359 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
| 361 | if (call <= MSGCTL) { |
| 362 | switch (call) { |
| 363 | case MSGSND: |
| 364 | err = sys_msgsnd(first, ptr, (size_t)second, |
| 365 | (int)third); |
| 366 | goto out; |
| 367 | case MSGRCV: |
| 368 | err = sys_msgrcv(first, ptr, (size_t)second, fifth, |
| 369 | (int)third); |
| 370 | goto out; |
| 371 | case MSGGET: |
| 372 | err = sys_msgget((key_t)first, (int)second); |
| 373 | goto out; |
| 374 | case MSGCTL: |
| 375 | err = sys_msgctl(first, (int)second | IPC_64, ptr); |
| 376 | goto out; |
| 377 | default: |
| 378 | err = -ENOSYS; |
| 379 | goto out; |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 380 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | } |
| 382 | if (call <= SHMCTL) { |
| 383 | switch (call) { |
| 384 | case SHMAT: { |
| 385 | ulong raddr; |
Will Deacon | 079a96a | 2012-07-30 14:42:38 -0700 | [diff] [blame] | 386 | err = do_shmat(first, ptr, (int)second, &raddr, SHMLBA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | if (!err) { |
| 388 | if (put_user(raddr, |
| 389 | (ulong __user *) third)) |
| 390 | err = -EFAULT; |
| 391 | } |
| 392 | goto out; |
| 393 | } |
| 394 | case SHMDT: |
| 395 | err = sys_shmdt(ptr); |
| 396 | goto out; |
| 397 | case SHMGET: |
| 398 | err = sys_shmget(first, (size_t)second, (int)third); |
| 399 | goto out; |
| 400 | case SHMCTL: |
| 401 | err = sys_shmctl(first, (int)second | IPC_64, ptr); |
| 402 | goto out; |
| 403 | default: |
| 404 | err = -ENOSYS; |
| 405 | goto out; |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 406 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | } else { |
| 408 | err = -ENOSYS; |
| 409 | } |
| 410 | out: |
| 411 | return err; |
| 412 | } |
| 413 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 414 | SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | { |
| 416 | int ret; |
| 417 | |
Jiri Kosina | a27032e | 2012-08-01 21:10:51 +0200 | [diff] [blame] | 418 | if (personality(current->personality) == PER_LINUX32 && |
| 419 | personality(personality) == PER_LINUX) |
| 420 | personality |= PER_LINUX32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | ret = sys_personality(personality); |
Jiri Kosina | a27032e | 2012-08-01 21:10:51 +0200 | [diff] [blame] | 422 | if (personality(ret) == PER_LINUX32) |
| 423 | ret &= ~PER_LINUX32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
| 425 | return ret; |
| 426 | } |
| 427 | |
Sam Ravnborg | f92ffa1 | 2008-06-06 20:51:20 +0200 | [diff] [blame] | 428 | int sparc_mmap_check(unsigned long addr, unsigned long len) |
Kirill Korotaev | 3a45975 | 2006-09-07 14:17:04 +0400 | [diff] [blame] | 429 | { |
| 430 | if (test_thread_flag(TIF_32BIT)) { |
| 431 | if (len >= STACK_TOP32) |
| 432 | return -EINVAL; |
| 433 | |
David S. Miller | 5816339 | 2008-05-07 02:24:28 -0700 | [diff] [blame] | 434 | if (addr > STACK_TOP32 - len) |
Kirill Korotaev | 3a45975 | 2006-09-07 14:17:04 +0400 | [diff] [blame] | 435 | return -EINVAL; |
| 436 | } else { |
| 437 | if (len >= VA_EXCLUDE_START) |
| 438 | return -EINVAL; |
| 439 | |
David S. Miller | 5816339 | 2008-05-07 02:24:28 -0700 | [diff] [blame] | 440 | if (invalid_64bit_range(addr, len)) |
Kirill Korotaev | 3a45975 | 2006-09-07 14:17:04 +0400 | [diff] [blame] | 441 | return -EINVAL; |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | /* Linux version of mmap */ |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 448 | SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, |
| 449 | unsigned long, prot, unsigned long, flags, unsigned long, fd, |
| 450 | unsigned long, off) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | { |
Al Viro | f8b7256 | 2009-11-30 17:37:04 -0500 | [diff] [blame] | 452 | unsigned long retval = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
Al Viro | f8b7256 | 2009-11-30 17:37:04 -0500 | [diff] [blame] | 454 | if ((off + PAGE_ALIGN(len)) < off) |
| 455 | goto out; |
| 456 | if (off & ~PAGE_MASK) |
| 457 | goto out; |
| 458 | retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | out: |
| 460 | return retval; |
| 461 | } |
| 462 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 463 | SYSCALL_DEFINE2(64_munmap, unsigned long, addr, size_t, len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | { |
David S. Miller | 8bcd174 | 2006-03-02 18:12:27 -0800 | [diff] [blame] | 465 | if (invalid_64bit_range(addr, len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | return -EINVAL; |
David S. Miller | 8bcd174 | 2006-03-02 18:12:27 -0800 | [diff] [blame] | 467 | |
Al Viro | bfce281 | 2012-04-20 21:57:04 -0400 | [diff] [blame] | 468 | return vm_munmap(addr, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 471 | SYSCALL_DEFINE5(64_mremap, unsigned long, addr, unsigned long, old_len, |
| 472 | unsigned long, new_len, unsigned long, flags, |
| 473 | unsigned long, new_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | if (test_thread_flag(TIF_32BIT)) |
Al Viro | 657bec8 | 2012-05-30 02:12:40 -0400 | [diff] [blame] | 476 | return -EINVAL; |
| 477 | return sys_mremap(addr, old_len, new_len, flags, new_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
| 479 | |
| 480 | /* we come to here via sys_nis_syscall so it can setup the regs argument */ |
| 481 | asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs) |
| 482 | { |
| 483 | static int count; |
| 484 | |
| 485 | /* Don't make the system unusable, if someone goes stuck */ |
| 486 | if (count++ > 5) |
| 487 | return -ENOSYS; |
| 488 | |
| 489 | printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]); |
| 490 | #ifdef DEBUG_UNIMP_SYSCALL |
| 491 | show_regs (regs); |
| 492 | #endif |
| 493 | |
| 494 | return -ENOSYS; |
| 495 | } |
| 496 | |
| 497 | /* #define DEBUG_SPARC_BREAKPOINT */ |
| 498 | |
| 499 | asmlinkage void sparc_breakpoint(struct pt_regs *regs) |
| 500 | { |
Kirill Tkhai | 812cb83 | 2013-09-14 16:02:11 +0400 | [diff] [blame] | 501 | enum ctx_state prev_state = exception_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | siginfo_t info; |
| 503 | |
| 504 | if (test_thread_flag(TIF_32BIT)) { |
| 505 | regs->tpc &= 0xffffffff; |
| 506 | regs->tnpc &= 0xffffffff; |
| 507 | } |
| 508 | #ifdef DEBUG_SPARC_BREAKPOINT |
| 509 | printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc); |
| 510 | #endif |
| 511 | info.si_signo = SIGTRAP; |
| 512 | info.si_errno = 0; |
| 513 | info.si_code = TRAP_BRKPT; |
| 514 | info.si_addr = (void __user *)regs->tpc; |
| 515 | info.si_trapno = 0; |
| 516 | force_sig_info(SIGTRAP, &info, current); |
| 517 | #ifdef DEBUG_SPARC_BREAKPOINT |
| 518 | printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc); |
| 519 | #endif |
Kirill Tkhai | 812cb83 | 2013-09-14 16:02:11 +0400 | [diff] [blame] | 520 | exception_exit(prev_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | extern void check_pending(int signum); |
| 524 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 525 | SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | { |
David S. Miller | 8310a32 | 2006-07-21 14:12:39 -0700 | [diff] [blame] | 527 | int nlen, err; |
| 528 | |
Andy Walker | b9c54f9 | 2006-09-18 07:11:36 -0700 | [diff] [blame] | 529 | if (len < 0) |
David S. Miller | 8310a32 | 2006-07-21 14:12:39 -0700 | [diff] [blame] | 530 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | |
| 532 | down_read(&uts_sem); |
| 533 | |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 534 | nlen = strlen(utsname()->domainname) + 1; |
Andy Walker | b9c54f9 | 2006-09-18 07:11:36 -0700 | [diff] [blame] | 535 | err = -EINVAL; |
| 536 | if (nlen > len) |
| 537 | goto out; |
David S. Miller | 8310a32 | 2006-07-21 14:12:39 -0700 | [diff] [blame] | 538 | |
| 539 | err = -EFAULT; |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 540 | if (!copy_to_user(name, utsname()->domainname, nlen)) |
David S. Miller | 8310a32 | 2006-07-21 14:12:39 -0700 | [diff] [blame] | 541 | err = 0; |
| 542 | |
Andy Walker | b9c54f9 | 2006-09-18 07:11:36 -0700 | [diff] [blame] | 543 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | up_read(&uts_sem); |
| 545 | return err; |
| 546 | } |
| 547 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 548 | SYSCALL_DEFINE5(utrap_install, utrap_entry_t, type, |
| 549 | utrap_handler_t, new_p, utrap_handler_t, new_d, |
| 550 | utrap_handler_t __user *, old_p, |
| 551 | utrap_handler_t __user *, old_d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | { |
| 553 | if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31) |
| 554 | return -EINVAL; |
| 555 | if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) { |
| 556 | if (old_p) { |
| 557 | if (!current_thread_info()->utraps) { |
| 558 | if (put_user(NULL, old_p)) |
| 559 | return -EFAULT; |
| 560 | } else { |
| 561 | if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p)) |
| 562 | return -EFAULT; |
| 563 | } |
| 564 | } |
| 565 | if (old_d) { |
| 566 | if (put_user(NULL, old_d)) |
| 567 | return -EFAULT; |
| 568 | } |
| 569 | return 0; |
| 570 | } |
| 571 | if (!current_thread_info()->utraps) { |
| 572 | current_thread_info()->utraps = |
Eric Sesterhenn | 9132983 | 2006-03-06 13:48:40 -0800 | [diff] [blame] | 573 | kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | if (!current_thread_info()->utraps) |
| 575 | return -ENOMEM; |
| 576 | current_thread_info()->utraps[0] = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | } else { |
| 578 | if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p && |
| 579 | current_thread_info()->utraps[0] > 1) { |
David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 580 | unsigned long *p = current_thread_info()->utraps; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
| 582 | current_thread_info()->utraps = |
| 583 | kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), |
| 584 | GFP_KERNEL); |
| 585 | if (!current_thread_info()->utraps) { |
| 586 | current_thread_info()->utraps = p; |
| 587 | return -ENOMEM; |
| 588 | } |
| 589 | p[0]--; |
| 590 | current_thread_info()->utraps[0] = 1; |
| 591 | memcpy(current_thread_info()->utraps+1, p+1, |
| 592 | UT_TRAP_INSTRUCTION_31*sizeof(long)); |
| 593 | } |
| 594 | } |
| 595 | if (old_p) { |
| 596 | if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p)) |
| 597 | return -EFAULT; |
| 598 | } |
| 599 | if (old_d) { |
| 600 | if (put_user(NULL, old_d)) |
| 601 | return -EFAULT; |
| 602 | } |
| 603 | current_thread_info()->utraps[type] = (long)new_p; |
| 604 | |
| 605 | return 0; |
| 606 | } |
| 607 | |
David S. Miller | 207ddd0 | 2008-03-26 01:43:29 -0700 | [diff] [blame] | 608 | asmlinkage long sparc_memory_ordering(unsigned long model, |
| 609 | struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
| 611 | if (model >= 3) |
| 612 | return -EINVAL; |
| 613 | regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14); |
| 614 | return 0; |
| 615 | } |
| 616 | |
David S. Miller | e426501 | 2009-01-19 21:11:27 -0800 | [diff] [blame] | 617 | SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act, |
| 618 | struct sigaction __user *, oact, void __user *, restorer, |
| 619 | size_t, sigsetsize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
| 621 | struct k_sigaction new_ka, old_ka; |
| 622 | int ret; |
| 623 | |
| 624 | /* XXX: Don't preclude handling different sized sigset_t's. */ |
| 625 | if (sigsetsize != sizeof(sigset_t)) |
| 626 | return -EINVAL; |
| 627 | |
| 628 | if (act) { |
| 629 | new_ka.ka_restorer = restorer; |
| 630 | if (copy_from_user(&new_ka.sa, act, sizeof(*act))) |
| 631 | return -EFAULT; |
| 632 | } |
| 633 | |
| 634 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
| 635 | |
| 636 | if (!ret && oact) { |
| 637 | if (copy_to_user(oact, &old_ka.sa, sizeof(*oact))) |
| 638 | return -EFAULT; |
| 639 | } |
| 640 | |
| 641 | return ret; |
| 642 | } |
| 643 | |
David S. Miller | 517ffce | 2012-10-26 15:18:37 -0700 | [diff] [blame] | 644 | asmlinkage long sys_kern_features(void) |
| 645 | { |
| 646 | return KERN_FEATURE_MIXED_MODE_STACK; |
| 647 | } |