libexplain  1.4.D001
Functions
libexplain/buffer/errno/getpgid.c File Reference
#include <libexplain/ac/errno.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/getpgid.h>
#include <libexplain/buffer/esrch.h>
#include <libexplain/buffer/pid_t_star.h>
#include <libexplain/explanation.h>

Go to the source code of this file.

Functions

static void explain_buffer_errno_getpgid_system_call (explain_string_buffer_t *sb, int errnum, pid_t pid)
void explain_buffer_errno_getpgid_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, pid_t pid)
void explain_buffer_errno_getpgid (explain_string_buffer_t *sb, int errnum, pid_t pid)

Function Documentation

void explain_buffer_errno_getpgid ( explain_string_buffer_t sb,
int  errnum,
pid_t  pid 
)

The explain_buffer_errno_getpgid function is used to obtain an explanation of an error returned by the getpgid(2) 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:
sbThe string buffer to print the message into. If a suitable buffer is specified, this function is thread safe.
errnumThe 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.
pidThe original pid, exactly as passed to the getpgid(2) system call.

Definition at line 68 of file getpgid.c.

void explain_buffer_errno_getpgid_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
pid_t  pid 
)

The explain_buffer_errno_getpgid_explanation function is used to obtain the explanation (the part after "because") of an error returned by the getpgid(2) system call (and similar).

Parameters:
sbThe string buffer to print the message into. If a suitable buffer is specified, this function is thread safe.
errnumThe 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_nameThe name of the offending system call.
pidThe original pid, exactly as passed to the getpgid(2) system call.

Definition at line 41 of file getpgid.c.

static void explain_buffer_errno_getpgid_system_call ( explain_string_buffer_t sb,
int  errnum,
pid_t  pid 
) [static]

Definition at line 30 of file getpgid.c.