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author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2016-11-07 16:26:35 -0500 |
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committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-04-04 09:17:15 -0400 |
commit | 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0 (patch) | |
tree | b014cc81ce32ca7e3fb05bf5d90d35737fa56cc2 /arch/powerpc/platforms/powermac/backlight.c | |
parent | 79a3aaa7b82e3106be97842dedfd8429248896e6 (diff) |
ptrace: Remove maxargs from task_current_syscall()
task_current_syscall() has a single user that passes in 6 for maxargs, which
is the maximum arguments that can be used to get system calls from
syscall_get_arguments(). Instead of passing in a number of arguments to
grab, just get 6 arguments. The args argument even specifies that it's an
array of 6 items.
This will also allow changing syscall_get_arguments() to not get a variable
number of arguments, but always grab 6.
Linus also suggested not passing in a bunch of arguments to
task_current_syscall() but to instead pass in a pointer to a structure, and
just fill the structure. struct seccomp_data has almost all the parameters
that is needed except for the stack pointer (sp). As seccomp_data is part of
uapi, and I'm afraid to change it, a new structure was created
"syscall_info", which includes seccomp_data and adds the "sp" field.
Link: http://lkml.kernel.org/r/20161107213233.466776454@goodmis.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch/powerpc/platforms/powermac/backlight.c')
0 files changed, 0 insertions, 0 deletions