1 use num_traits::{FromPrimitive, ToPrimitive}; 2 3 #[repr(i32)] 4 #[derive(Debug, FromPrimitive, ToPrimitive, PartialEq, Eq, Clone)] 5 #[allow(dead_code)] 6 pub enum SystemError { 7 /// 参数列表过长，或者在输出buffer中缺少空间 或者参数比系统内建的最大值要大 Argument list too long. 8 E2BIG = 1, 9 /// 访问被拒绝 Permission denied 10 EACCES = 2, 11 /// 地址正在被使用 Address in use. 12 EADDRINUSE = 3, 13 /// 地址不可用 Address not available. 14 EADDRNOTAVAIL = 4, 15 /// 地址family不支持 Address family not supported. 16 EAFNOSUPPORT = 5, 17 /// 资源不可用，请重试。 Resource unavailable, try again (may be the same value as [EWOULDBLOCK]) 18 EAGAIN = 6, 19 /// 连接已经在处理 Connection already in progress. 20 EALREADY = 7, 21 /// 错误的文件描述符 Bad file descriptor. 22 EBADF = 8, 23 /// 错误的消息 Bad message. 24 EBADMSG = 9, 25 /// 设备或资源忙 Device or resource busy. 26 EBUSY = 10, 27 /// 操作被取消 Operation canceled. 28 ECANCELED = 11, 29 /// 没有子进程 No child processes. 30 ECHILD = 12, 31 /// 连接已断开 Connection aborted. 32 ECONNABORTED = 13, 33 /// 连接被拒绝 Connection refused. 34 ECONNREFUSED = 14, 35 /// 连接被重置 Connection reset. 36 ECONNRESET = 15, 37 /// 资源死锁将要发生 Resource deadlock would occur. 38 EDEADLK = 16, 39 /// 需要目标地址 Destination address required. 40 EDESTADDRREQ = 17, 41 /// 数学参数超出作用域 Mathematics argument out of domain of function. 42 EDOM = 18, 43 /// 保留使用 Reserved 44 EDQUOT = 19, 45 /// 文件已存在 File exists. 46 EEXIST = 20, 47 /// 错误的地址 Bad address 48 EFAULT = 21, 49 /// 文件太大 File too large. 50 EFBIG = 22, 51 /// 主机不可达 Host is unreachable. 52 EHOSTUNREACH = 23, 53 /// 标志符被移除 Identifier removed. 54 EIDRM = 24, 55 /// 不合法的字符序列 Illegal byte sequence. 56 EILSEQ = 25, 57 /// 操作正在处理 Operation in progress. 58 EINPROGRESS = 26, 59 /// 被中断的函数 Interrupted function. 60 EINTR = 27, 61 /// 不可用的参数 Invalid argument. 62 EINVAL = 28, 63 /// I/O错误 I/O error. 64 EIO = 29, 65 /// 套接字已连接 Socket is connected. 66 EISCONN = 30, 67 /// 是一个目录 Is a directory 68 EISDIR = 31, 69 /// 符号链接级别过多 Too many levels of symbolic links. 70 ELOOP = 32, 71 /// 文件描述符的值过大 File descriptor value too large. 72 EMFILE = 33, 73 /// 链接数过多 Too many links. 74 EMLINK = 34, 75 /// 消息过大 Message too large. 76 EMSGSIZE = 35, 77 /// 保留使用 Reserved. 78 EMULTIHOP = 36, 79 /// 文件名过长 Filename too long. 80 ENAMETOOLONG = 37, 81 /// 网络已关闭 Network is down. 82 ENETDOWN = 38, 83 /// 网络连接已断开 Connection aborted by network. 84 ENETRESET = 39, 85 /// 网络不可达 Network unreachable. 86 ENETUNREACH = 40, 87 /// 系统中打开的文件过多 Too many files open in system. 88 ENFILE = 41, 89 /// 缓冲区空间不足 No buffer space available. 90 ENOBUFS = 42, 91 /// 队列头没有可读取的消息 No message is available on the STREAM head read queue. 92 ENODATA = 43, 93 /// 没有指定的设备 No such device. 94 ENODEV = 44, 95 /// 没有指定的文件或目录 No such file or directory. 96 ENOENT = 45, 97 /// 可执行文件格式错误 Executable file format error 98 ENOEXEC = 46, 99 /// 没有可用的锁 No locks available. 100 ENOLCK = 47, 101 /// 保留 Reserved. 102 ENOLINK = 48, 103 /// 没有足够的空间 Not enough space. 104 ENOMEM = 49, 105 /// 没有期待类型的消息 No message of the desired type. 106 ENOMSG = 50, 107 /// 协议不可用 Protocol not available. 108 ENOPROTOOPT = 51, 109 /// 设备上没有空间 No space left on device. 110 ENOSPC = 52, 111 /// 没有STREAM资源 No STREAM resources. 112 ENOSR = 53, 113 /// 不是STREAM Not a STREAM 114 ENOSTR = 54, 115 /// 功能不支持 Function not supported. 116 ENOSYS = 55, 117 /// 套接字未连接 The socket is not connected. 118 ENOTCONN = 56, 119 /// 不是目录 Not a directory. 120 ENOTDIR = 57, 121 /// 目录非空 Directory not empty. 122 ENOTEMPTY = 58, 123 /// 状态不可恢复 State not recoverable. 124 ENOTRECOVERABLE = 59, 125 /// 不是一个套接字 Not a socket. 126 ENOTSOCK = 60, 127 /// 不被支持 Not supported (may be the same value as [EOPNOTSUPP]). 128 ENOTSUP = 61, 129 /// 不正确的I/O控制操作 Inappropriate I/O control operation. 130 ENOTTY = 62, 131 /// 没有这样的设备或地址 No such device or address. 132 ENXIO = 63, 133 /// 套接字不支持该操作 Operation not supported on socket (may be the same value as [ENOTSUP]). 134 EOPNOTSUPP = 64, 135 /// 数值过大，产生溢出 Value too large to be stored in data type. 136 EOVERFLOW = 65, 137 /// 之前的拥有者挂了 Previous owner died. 138 EOWNERDEAD = 66, 139 /// 操作不被允许 Operation not permitted. 140 EPERM = 67, 141 /// 断开的管道 Broken pipe. 142 EPIPE = 68, 143 /// 协议错误 Protocol error. 144 EPROTO = 69, 145 /// 协议不被支持 Protocol not supported. 146 EPROTONOSUPPORT = 70, 147 /// 对于套接字而言，错误的协议 Protocol wrong type for socket. 148 EPROTOTYPE = 71, 149 /// 结果过大 Result too large. 150 ERANGE = 72, 151 /// 只读的文件系统 Read-only file system. 152 EROFS = 73, 153 /// 错误的寻道.当前文件是pipe，不允许seek请求 Invalid seek. 154 ESPIPE = 74, 155 /// 没有这样的进程 No such process. 156 ESRCH = 75, 157 /// 保留 Reserved. 158 ESTALE = 76, 159 /// 流式ioctl()超时 Stream ioctl() timeout 160 ETIME = 77, 161 /// 连接超时 Connection timed out. 162 ETIMEDOUT = 78, 163 /// 文本文件忙 Text file busy. 164 ETXTBSY = 79, 165 /// 操作将被禁止 Operation would block (may be the same value as [EAGAIN]). 166 EWOULDBLOCK = 80, 167 /// 跨设备连接 Cross-device link. 168 EXDEV = 81, 169 } 170 171 impl SystemError { 172 /// @brief 把posix错误码转换为系统错误枚举类型。 173 pub fn from_posix_errno(errno: i32) -> Option<SystemError> { 174 // posix 错误码是小于0的 175 if errno >= 0 { 176 return None; 177 } 178 return <Self as FromPrimitive>::from_i32(-errno); 179 } 180 181 /// @brief 把系统错误枚举类型转换为负数posix错误码。 182 pub fn to_posix_errno(&self) -> i32 { 183 return -<Self as ToPrimitive>::to_i32(self).unwrap(); 184 } 185 }