libexplain
1.4.D001
|
00001 /* 00002 * libexplain - Explain errno values returned by libc functions 00003 * Copyright (C) 2009, 2013 Peter Miller 00004 * 00005 * This program is free software; you can redistribute it and/or modify it 00006 * under the terms of the GNU Lesser General Public License as published by 00007 * the Free Software Foundation; either version 3 of the License, or (at 00008 * your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful,but 00011 * WITHOUT ANY WARRANTY; without even the implied warranty 00012 * ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNULesser 00013 * General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU Lesser General Public License 00016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 */ 00018 00019 #include <libexplain/ac/errno.h> 00020 00021 #include <libexplain/buffer/ebadf.h> 00022 #include <libexplain/buffer/efault.h> 00023 #include <libexplain/buffer/enosys.h> 00024 #include <libexplain/buffer/errno/generic.h> 00025 #include <libexplain/buffer/errno/tcgetattr.h> 00026 #include <libexplain/buffer/fildes.h> 00027 #include <libexplain/buffer/is_the_null_pointer.h> 00028 #include <libexplain/buffer/pointer.h> 00029 #include <libexplain/explanation.h> 00030 00031 00032 static void 00033 explain_buffer_errno_tcgetattr_system_call(explain_string_buffer_t *sb, int 00034 errnum, int fildes, struct termios *data) 00035 { 00036 (void)errnum; 00037 explain_string_buffer_puts(sb, "tcgetattr(fildes = "); 00038 explain_buffer_fildes(sb, fildes); 00039 explain_string_buffer_puts(sb, ", data = "); 00040 explain_buffer_pointer(sb, data); 00041 explain_string_buffer_putc(sb, ')'); 00042 } 00043 00044 00045 void 00046 explain_buffer_errno_tcgetattr_explanation(explain_string_buffer_t *sb, int 00047 errnum, const char *syscall_name, int fildes, struct termios *data) 00048 { 00049 /* 00050 * http://www.opengroup.org/onlinepubs/009695399/functions/tcgetattr.html 00051 */ 00052 switch (errnum) 00053 { 00054 case EBADF: 00055 explain_buffer_ebadf(sb, fildes, "fildes"); 00056 break; 00057 00058 case EINVAL: 00059 if (!data) 00060 { 00061 explain_buffer_is_the_null_pointer(sb, "data"); 00062 break; 00063 } 00064 goto generic; 00065 00066 case EFAULT: 00067 explain_buffer_efault(sb, "data"); 00068 break; 00069 00070 case ENOTTY: 00071 case ENOSYS: 00072 #if defined(EOPNOTSUPP) && EOPNOTSUPP != ENOSYS 00073 case EOPNOTSUPP: 00074 #endif 00075 #ifdef ENOIOCTLCMD 00076 case ENOIOCTLCMD: 00077 #endif 00078 #ifdef ENOIOCTL 00079 case ENONOIOCTL: 00080 #endif 00081 explain_buffer_enosys_fildes(sb, fildes, "fildes", syscall_name); 00082 break; 00083 00084 default: 00085 generic: 00086 explain_buffer_errno_generic(sb, errnum, syscall_name); 00087 break; 00088 } 00089 } 00090 00091 00092 void 00093 explain_buffer_errno_tcgetattr(explain_string_buffer_t *sb, int errnum, int 00094 fildes, struct termios *data) 00095 { 00096 explain_explanation_t exp; 00097 00098 explain_explanation_init(&exp, errnum); 00099 explain_buffer_errno_tcgetattr_system_call(&exp.system_call_sb, errnum, 00100 fildes, data); 00101 explain_buffer_errno_tcgetattr_explanation(&exp.explanation_sb, errnum, 00102 "tcgetattr", fildes, data); 00103 explain_explanation_assemble(&exp, sb); 00104 } 00105 00106 00107 /* vim: set ts=8 sw=4 et : */