summaryrefslogtreecommitdiff
path: root/arch/sparc/kernel/sys_sparc_32.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/kernel/sys_sparc_32.c')
-rw-r--r--arch/sparc/kernel/sys_sparc_32.c98
1 files changed, 54 insertions, 44 deletions
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index 3a8d1844402e..fb31bc0c5b48 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* linux/arch/sparc/kernel/sys_sparc.c
*
* This file contains various random system calls that
@@ -7,7 +8,9 @@
#include <linux/errno.h>
#include <linux/types.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
+#include <linux/sched/mm.h>
+#include <linux/sched/debug.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/file.h>
@@ -20,29 +23,36 @@
#include <linux/utsname.h>
#include <linux/smp.h>
#include <linux/ipc.h>
+#include <linux/hugetlb.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/unistd.h>
+#include "systbls.h"
+
/* #define DEBUG_UNIMP_SYSCALL */
/* XXX Make this per-binary type, this way we can detect the type of
* XXX a binary. Every Sparc executable calls this very early on.
*/
-asmlinkage unsigned long sys_getpagesize(void)
+SYSCALL_DEFINE0(getpagesize)
{
return PAGE_SIZE; /* Possibly older binaries want 8192 on sun4's? */
}
-unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags, vm_flags_t vm_flags)
{
- struct vm_unmapped_area_info info;
+ struct vm_unmapped_area_info info = {};
+ bool file_hugepage = false;
+
+ if (filp && is_file_hugepages(filp))
+ file_hugepage = true;
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
*/
- if ((flags & MAP_SHARED) &&
+ if (!file_hugepage && (flags & MAP_SHARED) &&
((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
return -EINVAL;
return addr;
@@ -54,13 +64,16 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
if (!addr)
addr = TASK_UNMAPPED_BASE;
- info.flags = 0;
info.length = len;
info.low_limit = addr;
info.high_limit = TASK_SIZE;
- info.align_mask = (flags & MAP_SHARED) ?
- (PAGE_MASK & (SHMLBA - 1)) : 0;
- info.align_offset = pgoff << PAGE_SHIFT;
+ if (!file_hugepage) {
+ info.align_mask = (flags & MAP_SHARED) ?
+ (PAGE_MASK & (SHMLBA - 1)) : 0;
+ info.align_offset = pgoff << PAGE_SHIFT;
+ } else {
+ info.align_mask = huge_page_mask_align(filp);
+ }
return vm_unmapped_area(&info);
}
@@ -68,7 +81,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way unix traditionally does this, though.
*/
-asmlinkage int sparc_pipe(struct pt_regs *regs)
+SYSCALL_DEFINE0(sparc_pipe)
{
int fd[2];
int error;
@@ -76,7 +89,7 @@ asmlinkage int sparc_pipe(struct pt_regs *regs)
error = do_pipe_flags(fd, 0);
if (error)
goto out;
- regs->u_regs[UREG_I1] = fd[1];
+ current_pt_regs()->u_regs[UREG_I1] = fd[1];
error = fd[0];
out:
return error;
@@ -93,27 +106,27 @@ int sparc_mmap_check(unsigned long addr, unsigned long len)
/* Linux version of mmap */
-asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags, unsigned long fd,
- unsigned long pgoff)
+SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
+ unsigned long, prot, unsigned long, flags, unsigned long, fd,
+ unsigned long, pgoff)
{
/* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE
we have. */
- return sys_mmap_pgoff(addr, len, prot, flags, fd,
- pgoff >> (PAGE_SHIFT - 12));
+ return ksys_mmap_pgoff(addr, len, prot, flags, fd,
+ pgoff >> (PAGE_SHIFT - 12));
}
-asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags, unsigned long fd,
- unsigned long off)
+SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
+ unsigned long, prot, unsigned long, flags, unsigned long, fd,
+ unsigned long, off)
{
/* no alignment check? */
- return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
+ return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
}
-long sparc_remap_file_pages(unsigned long start, unsigned long size,
- unsigned long prot, unsigned long pgoff,
- unsigned long flags)
+SYSCALL_DEFINE5(sparc_remap_file_pages, unsigned long, start, unsigned long, size,
+ unsigned long, prot, unsigned long, pgoff,
+ unsigned long, flags)
{
/* This works on an existing mmap so we don't need to validate
* the range as that was done at the original mmap call.
@@ -122,11 +135,10 @@ long sparc_remap_file_pages(unsigned long start, unsigned long size,
(pgoff >> (PAGE_SHIFT - 12)), flags);
}
-/* we come to here via sys_nis_syscall so it can setup the regs argument */
-asmlinkage unsigned long
-c_sys_nis_syscall (struct pt_regs *regs)
+SYSCALL_DEFINE0(nis_syscall)
{
static int count = 0;
+ struct pt_regs *regs = current_pt_regs();
if (count++ > 5)
return -ENOSYS;
@@ -143,17 +155,11 @@ c_sys_nis_syscall (struct pt_regs *regs)
asmlinkage void
sparc_breakpoint (struct pt_regs *regs)
{
- siginfo_t info;
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Entering kernel PC=%x, nPC=%x\n", regs->pc, regs->npc);
#endif
- info.si_signo = SIGTRAP;
- info.si_errno = 0;
- info.si_code = TRAP_BRKPT;
- info.si_addr = (void __user *)regs->pc;
- info.si_trapno = 0;
- force_sig_info(SIGTRAP, &info, current);
+ force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%x nPC=%x\n", regs->pc, regs->npc);
@@ -197,25 +203,29 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig,
return ret;
}
-asmlinkage int sys_getdomainname(char __user *name, int len)
+SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
{
- int nlen, err;
-
+ int nlen, err;
+ char tmp[__NEW_UTS_LEN + 1];
+
if (len < 0)
return -EINVAL;
- down_read(&uts_sem);
-
+ down_read(&uts_sem);
+
nlen = strlen(utsname()->domainname) + 1;
err = -EINVAL;
if (nlen > len)
- goto out;
+ goto out_unlock;
+ memcpy(tmp, utsname()->domainname, nlen);
- err = -EFAULT;
- if (!copy_to_user(name, utsname()->domainname, nlen))
- err = 0;
+ up_read(&uts_sem);
-out:
+ if (copy_to_user(name, tmp, nlen))
+ return -EFAULT;
+ return 0;
+
+out_unlock:
up_read(&uts_sem);
return err;
}
generated by cgit (git 2.34.1) at 2025-12-25 05:21:01 +0000