Release 4.7 arch/um/kernel/skas/syscall.c

/*
 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#include <linux/kernel.h>
#include <linux/ptrace.h>
#include <linux/seccomp.h>
#include <kern_util.h>
#include <sysdep/ptrace.h>
#include <sysdep/ptrace_user.h>
#include <sysdep/syscalls.h>



void handle_syscall(struct uml_pt_regs *r)
{
	struct pt_regs *regs = container_of(r, struct pt_regs, regs);
	int syscall;

	/* Initialize the syscall number and default return value. */
	UPT_SYSCALL_NR(r) = PT_SYSCALL_NR(r->gp);
	PT_REGS_SET_SYSCALL_RETURN(regs, -ENOSYS);

	/* Do the secure computing check first; failures should be fast. */
	if (secure_computing() == -1)
		return;

	if (syscall_trace_enter(regs))
		goto out;

	/* Update the syscall number after orig_ax has potentially been updated
         * with ptrace.
         */
	UPT_SYSCALL_NR(r) = PT_SYSCALL_NR(r->gp);
	syscall = UPT_SYSCALL_NR(r);

	if (syscall >= 0 && syscall <= __NR_syscall_max)
		PT_REGS_SET_SYSCALL_RETURN(regs,
				EXECUTE_SYSCALL(syscall, regs));

out:
	syscall_trace_leave(regs);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
mickael salaun
mickael salaun
55
46.61%
2
25.00%
jeff dike
jeff dike
47
39.83%
3
37.50%
richard weinberger
richard weinberger
8
6.78%
1
12.50%
al viro
al viro
4
3.39%
1
12.50%
paolo  giarrusso
paolo  giarrusso
4
3.39%
1
12.50%
Total
118
100.00%
8
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
mickael salaun
mickael salaun
60
42.86%
2
16.67%
jeff dike
jeff dike
58
41.43%
5
41.67%
richard weinberger
richard weinberger
10
7.14%
2
16.67%
al viro
al viro
8
5.71%
2
16.67%
paolo  giarrusso
paolo  giarrusso
4
2.86%
1
8.33%
Total
140
100.00%
12
100.00%
  
Directory: arch/um/kernel/skas

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