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Steven Rostedt (Red Hat)
631b7abacd
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/[email protected] Cc: Andy Lutomirski <[email protected]> Cc: Alexey Dobriyan <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Kees Cook <[email protected]> Cc: Al Viro <[email protected]> Cc: [email protected] Reviewed-by: Thomas Gleixner <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>