471c32bee4
This moves the x86 syscall table into thread_info to allow for per-thread syscall tables. Native 32-bit, 64-bit, and 32-bit emulation are handled. The feature is enabled with CONFIG_ALT_SYSCALL. Based on proof-of-concept from Will Drewry. BUG=brillo:384 TEST=gizmo build & boot, manual testing Suggested-by: Will Drewry <wad@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Change-Id: I2adb4742e284e8555621ccd78e487d8e4be73f6c Reviewed-on: https://chromium-review.googlesource.com/253230 Reviewed-by: Aaron Durbin <adurbin@chromium.org>
28 lines
753 B
C
28 lines
753 B
C
#include <linux/init_task.h>
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#include <linux/export.h>
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#include <linux/mqueue.h>
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#include <linux/sched.h>
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#include <linux/sched/sysctl.h>
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#include <linux/sched/rt.h>
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#include <linux/init.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <asm/pgtable.h>
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#include <asm/syscall.h>
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#include <asm/uaccess.h>
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static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
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static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
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/* Initial task structure */
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struct task_struct init_task = INIT_TASK(init_task);
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EXPORT_SYMBOL(init_task);
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/*
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* Initial thread structure. Alignment of this is handled by a special
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* linker map entry.
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*/
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union thread_union init_thread_union __init_task_data =
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{ INIT_THREAD_INFO(init_task) };
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