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Functions |
static void | explain_buffer_errno_tcflow_system_call (explain_string_buffer_t *sb, int errnum, int fildes, int action) |
void | explain_buffer_errno_tcflow_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, int fildes, int action) |
void | explain_buffer_errno_tcflow (explain_string_buffer_t *sb, int errnum, int fildes, int action) |
Function Documentation
The explain_buffer_errno_tcflow function is used to obtain an explanation of an error returned by the tcflow(3) system call. The least the message will contain is the value of strerror(errnum)
, but usually it will do much better, and indicate the underlying cause in more detail.
- Parameters:
-
sb | The string buffer to print the message into. If a suitable buffer is specified, this function is thread safe. |
errnum | The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno. |
fildes | The original fildes, exactly as passed to the tcflow(3) system call. |
action | The original action, exactly as passed to the tcflow(3) system call. |
Definition at line 84 of file tcflow.c.
The explain_buffer_errno_tcflow_explanation function is used to obtain the explanation (the part after "because") of an error returned by the tcflow(3) system call (and similar).
- Parameters:
-
sb | The string buffer to print the message into. If a suitable buffer is specified, this function is thread safe. |
errnum | The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno. |
syscall_name | The name of the offending system call. |
fildes | The original fildes, exactly as passed to the tcflow(3) system call. |
action | The original action, exactly as passed to the tcflow(3) system call. |
Definition at line 45 of file tcflow.c.