mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-04 17:42:46 +00:00
71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
|
package sys
|
||
|
|
|
||
|
|
// Oflag are flags used for FS.OpenFile. Values, including zero, should not be
|
||
|
|
// interpreted numerically. Instead, use by constants prefixed with 'O_' with
|
||
|
|
// special casing noted below.
|
||
|
|
//
|
||
|
|
// # Notes
|
||
|
|
//
|
||
|
|
// - O_RDONLY, O_RDWR and O_WRONLY are mutually exclusive, while the other
|
||
|
|
// flags can coexist bitwise.
|
||
|
|
// - This is like `flag` in os.OpenFile and `oflag` in POSIX. See
|
||
|
|
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html
|
||
|
|
type Oflag uint32
|
||
|
|
|
||
|
|
// This is a subset of oflags to reduce implementation burden. `wasip1` splits
|
||
|
|
// these across `oflags` and `fdflags`. We can't rely on the Go `os` package,
|
||
|
|
// as it is missing some values. Any flags added will be defined in POSIX
|
||
|
|
// order, as needed by functions that explicitly document accepting them.
|
||
|
|
//
|
||
|
|
// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-oflags-flagsu16
|
||
|
|
// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-fdflags-flagsu16
|
||
|
|
const (
|
||
|
|
// O_RDONLY is like os.O_RDONLY
|
||
|
|
O_RDONLY Oflag = iota
|
||
|
|
|
||
|
|
// O_RDWR is like os.O_RDWR
|
||
|
|
O_RDWR
|
||
|
|
|
||
|
|
// O_WRONLY is like os.O_WRONLY
|
||
|
|
O_WRONLY
|
||
|
|
|
||
|
|
// Define bitflags as they are in POSIX `open`: alphabetically
|
||
|
|
|
||
|
|
// O_APPEND is like os.O_APPEND
|
||
|
|
O_APPEND Oflag = 1 << iota
|
||
|
|
|
||
|
|
// O_CREAT is link os.O_CREATE
|
||
|
|
O_CREAT
|
||
|
|
|
||
|
|
// O_DIRECTORY is defined on some platforms as syscall.O_DIRECTORY.
|
||
|
|
//
|
||
|
|
// Note: This ensures that the opened file is a directory. Those emulating
|
||
|
|
// on platforms that don't support the O_DIRECTORY, can double-check the
|
||
|
|
// result with File.IsDir (or stat) and err if not a directory.
|
||
|
|
O_DIRECTORY
|
||
|
|
|
||
|
|
// O_DSYNC is defined on some platforms as syscall.O_DSYNC.
|
||
|
|
O_DSYNC
|
||
|
|
|
||
|
|
// O_EXCL is defined on some platforms as syscall.O_EXCL.
|
||
|
|
O_EXCL
|
||
|
|
|
||
|
|
// O_NOFOLLOW is defined on some platforms as syscall.O_NOFOLLOW.
|
||
|
|
//
|
||
|
|
// Note: This allows programs to ensure that if the opened file is a
|
||
|
|
// symbolic link, the link itself is opened instead of its target.
|
||
|
|
O_NOFOLLOW
|
||
|
|
|
||
|
|
// O_NONBLOCK is defined on some platforms as syscall.O_NONBLOCK.
|
||
|
|
O_NONBLOCK
|
||
|
|
|
||
|
|
// O_RSYNC is defined on some platforms as syscall.O_RSYNC.
|
||
|
|
O_RSYNC
|
||
|
|
|
||
|
|
// O_SYNC is defined on some platforms as syscall.O_SYNC.
|
||
|
|
O_SYNC
|
||
|
|
|
||
|
|
// O_TRUNC is defined on some platforms as syscall.O_TRUNC.
|
||
|
|
O_TRUNC
|
||
|
|
)
|