xmsg.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 54 行

#ifndef lint
static	char	*sccsid = "@(#)xmsg.c	4.1	(ULTRIX)	7/17/90";
#endif lint

/*
	Call fatal with an appropriate error message
	based on errno.  If no good message can be made up, it makes
	up a simple message.
	The second argument is a pointer to the calling functions
	name (a string); it's used in the manufactured message.
*/

# include	"errno.h"
# include	"sys/types.h"
# include	"macros.h"

xmsg(file,func)
char *file, *func;
{
	register char *str;
	extern int errno;
	extern char Error[];
	extern void free();
	extern char *malloc();

	switch (errno) {
	case ENFILE:
		str = "no file (ut3)";
		break;
	case ENOENT:
		sprintf(str = Error,"`%s' nonexistent (ut4)",file);
		break;
	case EACCES:
		str = (char *)malloc(size(file));
		copy(file,str);
		file = str;
		sprintf(str = Error,"directory `%s' unwritable (ut2)",
			dname(file));
		free(str);
		break;
	case ENOSPC:
		str = "no space! (ut10)";
		break;
	case EFBIG:
		str = "write error (ut8)";
		break;
	default:
		sprintf(str = Error,"errno = %d, function = `%s' (ut11)",errno,
			func);
		break;
	}
	return(fatal(str));
}