Low-level Unix wrapper types.

Remarks

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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Classes

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.

Structs

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.

Delegates

Type	Reason
SignalHandler	A delegate to handle POSIX signals.

Enumerations

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.