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.TH qlibs: error 3
.SH NAME
error \- syscall error codes and information
.SH SYNTAX
.B #include \(dqlogmsg.h\(dq
extern int \fBerrno\fP;
extern int \fBerror_intr\fP;
.br
extern int \fBerror_nomem\fP;
.br
extern int \fBerror_noent\fP;
.br
extern int \fBerror_txtbsy\fP;
.br
extern int \fBerror_io\fP;
.br
extern int \fBerror_exist\fP;
.br
extern int \fBerror_timeout\fP;
.br
extern int \fBerror_inprogress\fP;
.br
extern int \fBerror_wouldblock\fP;
.br
extern int \fBerror_again\fP;
.br
extern int \fBerror_pipe\fP;
.br
extern int \fBerror_perm\fP;
.br
extern int \fBerror_access\fP;
char *\fBerror_str\fP(int \fIe\fR);
int \fBerror_temp\fP(int \fIe\fR);
UNIX syscalls provide detailed error codes in the
.B errno
variable.
The
.B error
library provides portable names for a variety of possible
.B errno
values.
.B error_str
returns a printable string describing syscall error code
.IR e .
Normally
.I e
is
.BR errno .
.B error_temp
returns
.I 1
if syscall error code
.I e
is a soft error,
.I 0
if it is a hard error. Normally
.I e
is
.BR errno .
A hard error is persistent:
file not found, read-only file system, symbolic link loop, etc.
A soft error is usually transient:
out of memory, out of disk space, I/O error, disk quota exceeded,
connection refused, host unreachable, etc.
.SH "SEE ALSO"
sysmsg(3),
errno(2)
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