libexplain
1.4.D001
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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/dev_t.h> 00022 #include <libexplain/buffer/eacces.h> 00023 #include <libexplain/buffer/eexist.h> 00024 #include <libexplain/buffer/eexist.h> 00025 #include <libexplain/buffer/efault.h> 00026 #include <libexplain/buffer/einval.h> 00027 #include <libexplain/buffer/eloop.h> 00028 #include <libexplain/buffer/enametoolong.h> 00029 #include <libexplain/buffer/enoent.h> 00030 #include <libexplain/buffer/enomem.h> 00031 #include <libexplain/buffer/enospc.h> 00032 #include <libexplain/buffer/enotdir.h> 00033 #include <libexplain/buffer/eperm.h> 00034 #include <libexplain/buffer/erofs.h> 00035 #include <libexplain/buffer/errno/generic.h> 00036 #include <libexplain/buffer/errno/mknod.h> 00037 #include <libexplain/buffer/errno/path_resolution.h> 00038 #include <libexplain/buffer/pathname.h> 00039 #include <libexplain/buffer/stat_mode.h> 00040 #include <libexplain/explanation.h> 00041 00042 00043 static void 00044 explain_buffer_errno_mknod_system_call(explain_string_buffer_t *sb, int errnum, 00045 const char *pathname, mode_t mode, dev_t dev) 00046 { 00047 (void)errnum; 00048 explain_string_buffer_puts(sb, "mknod(pathname = "); 00049 explain_buffer_pathname(sb, pathname); 00050 explain_string_buffer_puts(sb, ", mode = "); 00051 explain_buffer_stat_mode(sb, mode); 00052 explain_string_buffer_puts(sb, ", dev = "); 00053 explain_buffer_dev_t(sb, dev); 00054 explain_string_buffer_putc(sb, ')'); 00055 } 00056 00057 00058 void 00059 explain_buffer_errno_mknod_explanation(explain_string_buffer_t *sb, int errnum, 00060 const char *syscall_name, const char *pathname, mode_t mode, dev_t dev) 00061 { 00062 explain_final_t fc; 00063 00064 (void)dev; 00065 explain_final_init(&fc); 00066 fc.must_exist = 0; 00067 fc.must_not_exist = 1; 00068 fc.want_to_create = 1; 00069 fc.follow_symlink = 0; 00070 fc.st_mode = mode; 00071 00072 /* 00073 * http://www.opengroup.org/onlinepubs/009695399/functions/mknod.html 00074 */ 00075 switch (errnum) 00076 { 00077 case EEXIST: 00078 explain_buffer_eexist(sb, pathname); 00079 break; 00080 00081 case EACCES: 00082 explain_buffer_eacces(sb, pathname, "pathname", &fc); 00083 break; 00084 00085 case EFAULT: 00086 explain_buffer_efault(sb, "pathname"); 00087 break; 00088 00089 case ELOOP: 00090 explain_buffer_eloop(sb, pathname, "pathname", &fc); 00091 break; 00092 00093 case ENAMETOOLONG: 00094 explain_buffer_enametoolong(sb, pathname, "pathname", &fc); 00095 break; 00096 00097 case ENOENT: 00098 explain_buffer_enoent(sb, pathname, "pathname", &fc); 00099 break; 00100 00101 case ENOMEM: 00102 explain_buffer_enomem_kernel(sb); 00103 break; 00104 00105 case ENOSPC: 00106 explain_buffer_enospc(sb, pathname, "pathname"); 00107 break; 00108 00109 case ENOTDIR: 00110 explain_buffer_enotdir(sb, pathname, "pathname", &fc); 00111 break; 00112 00113 case EPERM: 00114 explain_buffer_eperm_mknod(sb, pathname, "pathname", mode); 00115 break; 00116 00117 case EROFS: 00118 explain_buffer_erofs(sb, pathname, "pathname"); 00119 break; 00120 00121 case EINVAL: 00122 explain_buffer_einval_mknod(sb, mode, "mode", syscall_name); 00123 break; 00124 00125 default: 00126 explain_buffer_errno_generic(sb, errnum, syscall_name); 00127 break; 00128 } 00129 } 00130 00131 00132 void 00133 explain_buffer_errno_mknod(explain_string_buffer_t *sb, int errnum, 00134 const char *pathname, mode_t mode, dev_t dev) 00135 { 00136 explain_explanation_t exp; 00137 00138 explain_explanation_init(&exp, errnum); 00139 explain_buffer_errno_mknod_system_call(&exp.system_call_sb, errnum, 00140 pathname, mode, dev); 00141 explain_buffer_errno_mknod_explanation(&exp.explanation_sb, errnum, "mknod", 00142 pathname, mode, dev); 00143 explain_explanation_assemble(&exp, sb); 00144 } 00145 00146 00147 /* vim: set ts=8 sw=4 et : */