libexplain  1.4.D001
Functions
libexplain/buffer/errno/setgid.h File Reference
#include <libexplain/ac/unistd.h>
#include <libexplain/string_buffer.h>

Go to the source code of this file.

Functions

void explain_buffer_errno_setgid (explain_string_buffer_t *sb, int errnum, gid_t gid)
void explain_buffer_errno_setgid_explanation (explain_string_buffer_t *sb, int errnum, const char *syscall_name, gid_t gid)

Function Documentation

void explain_buffer_errno_setgid ( explain_string_buffer_t sb,
int  errnum,
gid_t  gid 
)

The explain_buffer_errno_setgid function is used to obtain an explanation of an error returned by the setgid(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.
gidThe original gid, exactly as passed to the setgid(2) system call.

Definition at line 127 of file setgid.c.

void explain_buffer_errno_setgid_explanation ( explain_string_buffer_t sb,
int  errnum,
const char *  syscall_name,
gid_t  gid 
)

The explain_buffer_errno_setgid_explanation function is used to obtain the explanation (the part after "because") of an error returned by the setgid(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.
gidThe original gid, exactly as passed to the setgid(2) system call.

Definition at line 41 of file setgid.c.