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Functions |
static void | explain_buffer_errno_sprintf_system_call (explain_string_buffer_t *sb, int errnum, char *data, const char *format, va_list ap) |
void | explain_buffer_errno_sprintf_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, char *data, const char *format, va_list ap) |
void | explain_buffer_errno_sprintf (explain_string_buffer_t *sb, int errnum, char *data, const char *format, va_list ap) |
Function Documentation
The explain_buffer_errno_sprintf function is used to obtain an explanation of an error returned by the sprintf(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. |
data | The original data, exactly as passed to the sprintf(3) system call. |
format | The original format, exactly as passed to the sprintf(3) system call. |
ap | The rest of the arguments. |
Definition at line 70 of file sprintf.c.
The explain_buffer_errno_sprintf_explanation function is used to obtain the explanation (the part after "because") of an error returned by the sprintf(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. |
data | The original data, exactly as passed to the sprintf(3) system call. |
format | The original format, exactly as passed to the sprintf(3) system call. |
ap | The rest of the arguments. |
Definition at line 49 of file sprintf.c.