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Resolve bit set differences between linux and other platforms in posix/fcntl
This commit is contained in:
Isaac Andrade
@@ -95,56 +95,116 @@ Lock_Type :: enum c.short {
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// Assertions made to unify this bit set.
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#assert(O_RDONLY == 0)
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O_Flag_Bits :: enum c.int {
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// Sets FD_CLOEXEC on the file descriptor.
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CLOEXEC = log2(O_CLOEXEC),
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// If not exists, combined with DIRECTORY will cause creation of a directory, otherwise a regular file.
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CREAT = log2(O_CREAT),
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// Fails if the opened descriptor would not be a directory.
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DIRECTORY = log2(O_DIRECTORY),
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// If combined with CREAT, causes a failure if the file already exists.
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EXCL = log2(O_EXCL),
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// If terminal device, do not make it the controlling terminal for the process.
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NOCTTY = log2(O_NOCTTY),
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// Don't follow symbolic links, fail with errno ELOOP.
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NOFOLLOW = log2(O_NOFOLLOW),
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// If exists and regular, truncate the length to 0.
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TRUNC = log2(O_TRUNC),
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when ODIN_OS == .Linux {
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// NOTE: use with `posix.O_TTY_INIT + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// TTY_INIT = O_TTY_INIT,
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O_Flag_Bits :: enum c.int {
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// Sets FD_CLOEXEC on the file descriptor.
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CLOEXEC = log2(O_CLOEXEC),
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// If not exists, combined with DIRECTORY will cause creation of a directory, otherwise a regular file.
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CREAT = log2(O_CREAT),
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// Fails if the opened descriptor would not be a directory.
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DIRECTORY = log2(O_DIRECTORY),
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// If combined with CREAT, causes a failure if the file already exists.
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EXCL = log2(O_EXCL),
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// If terminal device, do not make it the controlling terminal for the process.
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NOCTTY = log2(O_NOCTTY),
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// Don't follow symbolic links, fail with errno ELOOP.
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NOFOLLOW = log2(O_NOFOLLOW),
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// If exists and regular, truncate the length to 0.
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TRUNC = log2(O_TRUNC),
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// Set file offset to end of file prior to each write.
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APPEND = log2(O_APPEND),
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// Write I/O shall complete as defined by synchronized I/O data integrity completion.
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DSYNC = log2(O_DSYNC),
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// Causes nonblocking behaviour in various situations.
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NONBLOCK = log2(O_NONBLOCK),
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// Write I/O shall complete as defined by synchronized I/O file integrity completion.
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SYNC = log2(O_SYNC),
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// NOTE: use with `posix.O_TTY_INIT + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// TTY_INIT = O_TTY_INIT,
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// NOTE: use with `posix.O_RSYNC + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// RSYNC = O_RSYNC,
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// Set file offset to end of file prior to each write.
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APPEND = log2(O_APPEND),
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// Write I/O shall complete as defined by synchronized I/O data integrity completion.
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DSYNC = log2(O_DSYNC),
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// Causes nonblocking behaviour in various situations.
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NONBLOCK = log2(O_NONBLOCK),
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// Write I/O shall complete as defined by synchronized I/O file integrity completion.
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SYNC = log2(O_SYNC),
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// Execute only.
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// NOTE: use with `posix.O_ENTER + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// EXEC = O_EXEC
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// NOTE: use with `posix.O_RSYNC + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// RSYNC = O_RSYNC,
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// Reading and writing.
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RDWR = log2(O_RDWR),
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// Writing only.
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WRONLY = log2(O_WRONLY),
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// Reading only.
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// RDONLY = 0, // Default
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// Execute only.
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// NOTE: use with `posix.O_ENTER + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// EXEC = O_EXEC
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// Reading and writing.
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RDWR = log2(O_RDWR),
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// Writing only.
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WRONLY = log2(O_WRONLY),
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// Reading only.
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// RDONLY = 0, // Default
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}
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} else {
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O_Flag_Bits :: enum c.int {
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// Sets FD_CLOEXEC on the file descriptor.
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CLOEXEC = log2(O_CLOEXEC),
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// If not exists, combined with DIRECTORY will cause creation of a directory, otherwise a regular file.
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CREAT = log2(O_CREAT),
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// Fails if the opened descriptor would not be a directory.
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DIRECTORY = log2(O_DIRECTORY),
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// If combined with CREAT, causes a failure if the file already exists.
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EXCL = log2(O_EXCL),
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// If terminal device, do not make it the controlling terminal for the process.
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NOCTTY = log2(O_NOCTTY),
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// Don't follow symbolic links, fail with errno ELOOP.
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NOFOLLOW = log2(O_NOFOLLOW),
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// If exists and regular, truncate the length to 0.
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TRUNC = log2(O_TRUNC),
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// NOTE: use with `posix.O_TTY_INIT + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// TTY_INIT = O_TTY_INIT,
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// Set file offset to end of file prior to each write.
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APPEND = log2(O_APPEND),
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// Write I/O shall complete as defined by synchronized I/O data integrity completion.
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DSYNC = log2(O_DSYNC),
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// Causes nonblocking behaviour in various situations.
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NONBLOCK = log2(O_NONBLOCK),
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// Write I/O shall complete as defined by synchronized I/O file integrity completion.
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SYNC = log2(O_SYNC),
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// NOTE: use with `posix.O_RSYNC + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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// RSYNC = O_RSYNC,
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// Execute only.
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// NOTE: use with `posix.O_ENTER + { .OTHER_FLAG, .OTHER_FLAG }`, unfortunately can't be in
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// this bit set enum because it is 0 on some platforms and a value on others.
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EXEC = O_EXEC,
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// Reading and writing.
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RDWR = log2(O_RDWR),
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// Writing only.
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WRONLY = log2(O_WRONLY),
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// Reading only.
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// RDONLY = 0, // Default
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}
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}
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O_Flags :: bit_set[O_Flag_Bits; c.int]
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// A mask of all the access mode bits.
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// NOTE: .EXEC and .RDONLY also belong here, but they are 0 on some platforms.
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O_ACCMODE :: O_Flags{ .RDWR, .WRONLY }
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when ODIN_OS == .Linux {
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// NOTE: .EXEC and .RDONLY also belong here, but they are 0 on some platforms.
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O_ACCMODE :: O_Flags{ .RDWR, .WRONLY }
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} else {
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// NOTE: .RDONLY also belong here, but they are 0 on some platforms.
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O_ACCMODE :: O_Flags{ .EXEC, .RDWR, .WRONLY }
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}
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AT_Flag_Bits :: enum c.int {
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EACCESS = log2(AT_EACCESS),
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