include/asm/syscall.h

14  * syscall_get_nr - find what system call a task is executing
18  * If @task is executing a system call or is at system call
19  * tracing about to attempt one, returns the system call number.
20  * If @task is not executing a system call, i.e. it's blocked
24  * system call number can be meaningful.  If the actual arch value
36  * syscall_rollback - roll back registers after an aborted system call
37  * @task:	task of interest, must be in system call exit tracing
40  * It's only valid to call this when @task is stopped for system
43  * the system call from taking place.
46  * system call instruction was a no-op.  The registers containing
47  * the system call number and arguments are as they were before the
48  * system call instruction.  This may not be the same as what the
49  * register state looked like at system call entry tracing.
58  * syscall_get_error - check result of traced system call
62  * Returns 0 if the system call succeeded, or -ERRORCODE if it failed.
65  * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
75  * syscall_get_return_value - get the return value of a traced system call
79  * Returns the return value of the successful system call.
83  * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
92  * syscall_set_return_value - change the return value of a traced system call
98  * This changes the results of the system call that user mode will see.
99  * If @error is zero, the user sees a successful system call with a
101  * code; the user sees a failed system call with this errno code.
104  * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
114  * syscall_get_arguments - extract system call parameter values
119  * Fetches 6 arguments to the system call (from 0 through 5). The first
123  * entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
136  * syscall_set_arguments - change system call parameter value
137  * @task:	task of interest, must be in system call entry tracing
141  * Changes 6 arguments to the system call. The first argument gets value
145  * entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.