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SYSCALL_GET_ERROR(9) Machine State SYSCALL_GET_ERROR(9)

NAME

syscall_get_error - check result of traced system call

SYNOPSIS

long syscall_get_error(struct task_struct * task, struct pt_regs * regs);

ARGUMENTS

task

task of interest, must be blocked

regs

task_pt_regs of task

DESCRIPTION

Returns 0 if the system call succeeded, or -ERRORCODE if it failed.

It´s only valid to call this when task is stopped for tracing on exit from a system call, due to TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT.

April 2023 Kernel Hackers Manual 2.6.