1SYSCALL_GET_ERROR(9) Machine State SYSCALL_GET_ERROR(9)
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6 syscall_get_error - check result of traced system call
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9 long syscall_get_error(struct task_struct * task,
10 struct pt_regs * regs);
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13 task
14 task of interest, must be blocked
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16 regs
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18 task_pt_regs of task
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21 Returns 0 if the system call succeeded, or -ERRORCODE if it failed.
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23 It´s only valid to call this when task is stopped for tracing on exit
24 from a system call, due to TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT.
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28Kernel Hackers Manual 2.6. June 2019 SYSCALL_GET_ERROR(9)