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| author |   Gabriel Krisman Bertazi <krisman@collabora.com> | 2021-02-05 13:43:21 -0500 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2021-02-06 00:21:42 +0100 |
| commit | 36a6c843fd0d8e02506681577e96dabd203dd8e8 (patch) | |
| tree | 5d235696ba455e2ad85d78592489ad818efdf851 /kernel/entry | |
| parent | entry: Ensure trap after single-step on system call return (diff) | |
| download | linux-dev-36a6c843fd0d8e02506681577e96dabd203dd8e8.tar.xz linux-dev-36a6c843fd0d8e02506681577e96dabd203dd8e8.zip | |
entry: Use different define for selector variable in SUD
Michael Kerrisk suggested that, from an API perspective, it is a bad
idea to share the PR_SYS_DISPATCH_ defines between the prctl operation
and the selector variable.
Therefore, define two new constants to be used by SUD's selector variable
and update the corresponding documentation and test cases.
While this changes the API syscall user dispatch has never been part of a
Linux release, it will show up for the first time in 5.11.
Suggested-by: Michael Kerrisk (man-pages) <mtk.manpages@gmail.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210205184321.2062251-1-krisman@collabora.com
Diffstat (limited to 'kernel/entry')
| -rw-r--r-- | kernel/entry/syscall_user_dispatch.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/entry/syscall_user_dispatch.c b/kernel/entry/syscall_user_dispatch.c index b0338a5625d9..c240302f56e2 100644 --- a/kernel/entry/syscall_user_dispatch.c +++ b/kernel/entry/syscall_user_dispatch.c @@ -50,10 +50,10 @@ bool syscall_user_dispatch(struct pt_regs *regs) if (unlikely(__get_user(state, sd->selector))) do_exit(SIGSEGV); - if (likely(state == PR_SYS_DISPATCH_OFF)) + if (likely(state == SYSCALL_DISPATCH_FILTER_ALLOW)) return false; - if (state != PR_SYS_DISPATCH_ON) + if (state != SYSCALL_DISPATCH_FILTER_BLOCK) do_exit(SIGSYS); } |