Low-level Unix wrapper types.
The Mono.Unix.Native namespace contains low-level wrapper classes, structures, and enumerations which are accessible from the Mono.Unix.Native.Syscall and Mono.Unix.Native.Stdlib classes, which are a low-level wrappers over ANSI C, POSIX and Unix system calls and library functions.
Note:Thread-safety wasn't handled in the original Unix API. While some degree of thread-safety is provided from managed code, it is impossible to provide full thread-safety for interactions between managed and unmanaged code. For example, if you DllImport into a C library which uses non-thread-safe Unix functions which are also exposed in Mono.Unix.Native, you may have threading issues including, but not limited to, memory corruption.
An effort is made to provide thread-safety from managed code, but it is impossible to know all dependencies for all potential Unix-like platforms. For example, is Mono.Unix.Native.Stdlib.fopen thread-safe? It appears to be under glibc, but isn't necessarily under all Unix platforms. Mono.Unix.Native.Stdlib assumes that it is. Only obviously unsafe exports are actually synchronized from managed code, such as Mono.Unix.Native.Stdlib.tmpnam and Mono.Unix.Native.Stdlib.strerror.
Documentation is based upon the FreeBSD man pages, which is under the following copyright:
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Type Reason CdeclFunction Permits calling a varargs (cdecl) function from a library. Dirent Information about a directory entry. FilePosition A wrapper for the platform-specific fpos_t. Fstab File system descriptor file entry. Group Group database entry. NativeConvert Performs conversions between managed and unmanaged enumeration values. Passwd Password database entry. Stdlib C Standard Library functions. Syscall The Syscall wrapper class makes it possible to execute the defined system calls. For more information on any of these system calls, the linux manual system (man) has exhaustive information on each syscall in section two: 'man 2 chdir' (or often chdir(2)) for example would give information related to chdir, including error codes, which are in general not listed here. Utsname Documentation for this section has not yet been entered.
Type Reason Flock Mono.Unix.Native.Syscall.fcntl(2) advisory file locking information. Pollfd Polling information for Mono.Unix.Native.Syscall.poll. Stat Every file has a unique INODE data structure. Mono's managed representation is the Stat struct. the Mono.Unix.Native.Syscall.stat and Mono.Unix.Native.Syscall.lstat methods return the Stat struct as an output parameter. Statvfs File system statistics. Timespec Documentation for this section has not yet been entered. Timeval Microsecond-precision time value. Timezone Timezone information. DO NOT USE. Utimbuf File time information.
Type Reason SignalHandler A delegate to handle POSIX signals.
Type Reason AccessModes Represents the access mode of a task: read, write, execute or test if the file exists. ConfstrName Documentation for this section has not yet been entered. DirectoryNotifyFlags File and directory change notification flags for Mono.Unix.Native.Syscall.fcntl. Errno Error values. FcntlCommand Possible Mono.Unix.Native.Syscall.fcntlcommand values. FilePermissions The FilePermissions enumeration describes file system modes (read,write,execute) as described in the POSIX standard. LockfCommand Possible Mono.Unix.Native.Syscall.lockfcmd values. LockType The type of lock to place on a file. MlockallFlags Documentation for this section has not yet been entered. MmapFlags Possible Mono.Unix.Native.Syscall.mmapflags values. MmapProts Possible Mono.Unix.Native.Syscall.mmapprot values. MountFlags Possible Mono.Unix.Native.Statvfs.f_flag values. MremapFlags Possible Mono.Unix.Native.Syscall.mremapflags values. MsyncFlags Possible Mono.Unix.Native.Syscall.msyncflags values. OpenFlags Possible Mono.Unix.Native.Syscall.openflags values. PathconfName Documentation for this section has not yet been entered. PollEvents Events which may be Mono.Unix.Native.Syscall.poll(2)ed for. PosixFadviseAdvice Possible Mono.Unix.Native.Syscall.posix_fadviseadvice values. PosixMadviseAdvice Possible Mono.Unix.Native.Syscall.posix_madviseadvice values. SeekFlags Where to interpret offsets from. SignalAction The set of actions to perform on receipt of a Unix signal. Signum List of available signals. SysconfName Documentation for this section has not yet been entered. SyslogFacility System logging facilities. SyslogLevel System logging levels. SyslogOptions System logging options. WaitOptions Wait options for the Mono.Unix.Native.Syscall.waitpid syscall method. XattrFlags Documentation for this section has not yet been entered.