WasiHostFunction

Read command-line argument data.

Return command-line argument data sizes.

Read environment variable data. The sizes of the buffers should match that returned by environ_sizes_get. Key/value pairs are expected to be joined with =s, and terminated with \0s.

Return environment variable data sizes.

Return the resolution of a clock. Implementations are required to provide a non-zero value for supported clocks. For unsupported clocks, return errno::inval.

Return the time value of a clock. Note: This is similar to clock_gettime in POSIX.

Provide file advisory information on a file descriptor. Note: This is similar to posix_fadvise in POSIX.

Force the allocation of space in a file. Note: This is similar to posix_fallocate in POSIX.

Close a file descriptor. Note: This is similar to close in POSIX.

Get the attributes of a file descriptor.

Adjust the flags associated with a file descriptor.

Adjust the rights associated with a file descriptor. This can only be used to remove rights, and returns errno::notcapable if called in a way that would attempt to add rights

Return the attributes of an open file.

Adjust the size of an open file. If this increases the file's size, the extra bytes are filled with zeros. Note: This is similar to ftruncate in POSIX.

Adjust the timestamps of an open file or directory. Note: This is similar to futimens in POSIX.

Read from a file descriptor, without using and updating the file descriptor's offset. Note: This is similar to preadv in Linux (and other Unix-es).

Return a description of the given preopened file descriptor.

Return a description of the given preopened file descriptor.

Write to a file descriptor, without using and updating the file descriptor's offset. Note: This is similar to pwritev in Linux (and other Unix-es).

Read from a file descriptor. Note: This is similar to readv in POSIX.

Read directory entries from a directory. When successful, the contents of the output buffer consist of a sequence of directory entries. Each directory entry consists of a dirent object, followed by dirent::d_namlen bytes holding the name of the directory entry.

Atomically replace a file descriptor by renumbering another file descriptor.

Move the offset of a file descriptor. Note: This is similar to lseek in POSIX.

Synchronize the data and metadata of a file to disk. Note: This is similar to fsync in POSIX.

Return the current offset of a file descriptor. Note: This is similar to lseek(fd, 0, SEEK_CUR) in POSIX.

Write to a file descriptor. Note: This is similar to writev in POSIX.

Create a directory. Note: This is similar to mkdirat in POSIX.

Return the attributes of a file or directory. Note: This is similar to stat in POSIX.

Adjust the timestamps of a file or directory. Note: This is similar to utimensat in POSIX.

Create a hard link. Note: This is similar to linkat in POSIX.

Open a file or directory.

Read the contents of a symbolic link.

Remove a directory.

Rename a file or directory. Note: This is similar to renameat in POSIX.

Create a symbolic link. Note: This is similar to symlinkat in POSIX.

Unlink a file.

Concurrently poll for the occurrence of a set of events.

Terminate the process normally. An exit code of 0 indicates successful termination of the program. The meanings of other values is dependent on the environment.

Send a signal to the process of the calling thread. Note: This is similar to raise in POSIX.

Temporarily yield execution of the calling thread. Note: This is similar to sched_yield in POSIX.

Write high-quality random data into a buffer. This function blocks when the implementation is unable to immediately provide sufficient high-quality random data. This function may execute slowly, so when large mounts of random data are required, it's advisable to use this function to seed a pseudo-random number generator, rather than to provide the random data directly.

Accept a new incoming connection. Note: This is similar to accept in POSIX.

Receive a message from a socket.

Send a message on a socket. Note: This is similar to send in POSIX, though it also supports writing the data from multiple buffers in the manner of writev.

Shut down socket send and receive channels. Note: This is similar to shutdown in POSIX.

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared.