Путеводитель по Руководству Linux
  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |


   ptrace    ( 2 )

трассировка процесса (process trace)
  Name  |  Synopsis  |  Description  |  Return value  |    Error    |  Conforming to  |  Note  |  Bugs  |  See also  |

Ошибки (Error)

EBUSY (i386 only) There was an error with allocating or freeing a debug register.

EFAULT There was an attempt to read from or write to an invalid area in the tracer's or the tracee's memory, probably because the area wasn't mapped or accessible. Unfortunately, under Linux, different variations of this fault will return EIO or EFAULT more or less arbitrarily.

EINVAL An attempt was made to set an invalid option.

EIO request is invalid, or an attempt was made to read from or write to an invalid area in the tracer's or the tracee's memory, or there was a word-alignment violation, or an invalid signal was specified during a restart request.

EPERM The specified process cannot be traced. This could be because the tracer has insufficient privileges (the required capability is CAP_SYS_PTRACE); unprivileged processes cannot trace processes that they cannot send signals to or those running set-user-ID/set-group-ID programs, for obvious reasons. Alternatively, the process may already be being traced, or (on kernels before 2.6.26) be init(1) (PID 1).

ESRCH The specified process does not exist, or is not currently being traced by the caller, or is not stopped (for requests that require a stopped tracee).