mirror of
https://github.com/Ed94/Odin.git
synced 2026-06-14 18:02:22 -07:00
gingerBill
746 lines
20 KiB
Odin
746 lines
20 KiB
Odin
package os
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foreign import dl "system:dl"
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foreign import libc "system:c"
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import "core:runtime"
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import "core:strings"
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import "core:c"
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Handle :: distinct i32
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File_Time :: distinct u64
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Errno :: distinct i32
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INVALID_HANDLE :: ~Handle(0)
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ERROR_NONE: Errno : 0
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EPERM: Errno : 1
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ENOENT: Errno : 2
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ESRCH: Errno : 3
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EINTR: Errno : 4
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EIO: Errno : 5
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ENXIO: Errno : 6
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E2BIG: Errno : 7
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ENOEXEC: Errno : 8
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EBADF: Errno : 9
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ECHILD: Errno : 10
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EBEADLK: Errno : 11
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ENOMEM: Errno : 12
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EACCESS: Errno : 13
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EFAULT: Errno : 14
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ENOTBLK: Errno : 15
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EBUSY: Errno : 16
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EEXIST: Errno : 17
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EXDEV: Errno : 18
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ENODEV: Errno : 19
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ENOTDIR: Errno : 20
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EISDIR: Errno : 21
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EINVAL: Errno : 22
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ENFILE: Errno : 23
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EMFILE: Errno : 24
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ENOTTY: Errno : 25
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ETXTBSY: Errno : 26
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EFBIG: Errno : 27
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ENOSPC: Errno : 28
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ESPIPE: Errno : 29
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EROFS: Errno : 30
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EMLINK: Errno : 31
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EPIPE: Errno : 32
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EDOM: Errno : 33
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ERANGE: Errno : 34 /* Result too large */
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EAGAIN: Errno : 35
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EINPROGRESS: Errno : 36
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EALREADY: Errno : 37
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ENOTSOCK: Errno : 38
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EDESTADDRREQ: Errno : 39
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EMSGSIZE: Errno : 40
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EPROTOTYPE: Errno : 41
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ENOPROTOOPT: Errno : 42
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EPROTONOSUPPORT: Errno : 43
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ESOCKTNOSUPPORT: Errno : 44
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EOPNOTSUPP: Errno : 45
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EPFNOSUPPORT: Errno : 46
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EAFNOSUPPORT: Errno : 47
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EADDRINUSE: Errno : 48
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EADDRNOTAVAIL: Errno : 49
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ENETDOWN: Errno : 50
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ENETUNREACH: Errno : 51
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ENETRESET: Errno : 52
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ECONNABORTED: Errno : 53
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ECONNRESET: Errno : 54
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ENOBUFS: Errno : 55
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EISCONN: Errno : 56
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ENOTCONN: Errno : 57
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ESHUTDOWN: Errno : 58
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ETIMEDOUT: Errno : 60
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ECONNREFUSED: Errno : 61
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ELOOP: Errno : 62
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ENAMETOOLING: Errno : 63
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EHOSTDOWN: Errno : 64
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EHOSTUNREACH: Errno : 65
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ENOTEMPTY: Errno : 66
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EPROCLIM: Errno : 67
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EUSERS: Errno : 68
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EDQUOT: Errno : 69
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ESTALE: Errno : 70
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EBADRPC: Errno : 72
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ERPCMISMATCH: Errno : 73
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EPROGUNAVAIL: Errno : 74
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EPROGMISMATCH: Errno : 75
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EPROCUNAVAIL: Errno : 76
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ENOLCK: Errno : 77
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ENOSYS: Errno : 78
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EFTYPE: Errno : 79
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EAUTH: Errno : 80
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ENEEDAUTH: Errno : 81
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EIDRM: Errno : 82
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ENOMSG: Errno : 83
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EOVERFLOW: Errno : 84
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ECANCELED: Errno : 85
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EILSEQ: Errno : 86
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ENOATTR: Errno : 87
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EDOOFUS: Errno : 88
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EBADMSG: Errno : 89
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EMULTIHOP: Errno : 90
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ENOLINK: Errno : 91
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EPROTO: Errno : 92
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ENOTCAPABLE: Errno : 93
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ECAPMODE: Errno : 94
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ENOTRECOVERABLE: Errno : 95
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EOWNERDEAD: Errno : 96
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O_RDONLY :: 0x00000
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O_WRONLY :: 0x00001
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O_RDWR :: 0x00002
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O_CREATE :: 0x00040
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O_EXCL :: 0x00080
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O_NOCTTY :: 0x00100
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O_TRUNC :: 0x00200
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O_NONBLOCK :: 0x00800
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O_APPEND :: 0x00400
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O_SYNC :: 0x01000
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O_ASYNC :: 0x02000
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O_CLOEXEC :: 0x80000
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SEEK_DATA :: 3
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SEEK_HOLE :: 4
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SEEK_MAX :: SEEK_HOLE
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// NOTE: These are OS specific!
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// Do not mix these up!
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RTLD_LAZY :: 0x001
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RTLD_NOW :: 0x002
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//RTLD_BINDING_MASK :: 0x3 // Called MODEMASK in dlfcn.h
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RTLD_GLOBAL :: 0x100
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RTLD_LOCAL :: 0x000
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RTLD_TRACE :: 0x200
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RTLD_NODELETE :: 0x01000
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RTLD_NOLOAD :: 0x02000
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MAX_PATH :: 1024
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args := _alloc_command_line_arguments()
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Unix_File_Time :: struct {
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seconds: time_t,
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nanoseconds: c.long,
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}
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dev_t :: u64
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ino_t :: u64
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nlink_t :: u64
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off_t :: i64
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mode_t :: u16
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pid_t :: u32
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uid_t :: u32
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gid_t :: u32
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blkcnt_t :: i64
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blksize_t :: i32
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fflags_t :: u32
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when ODIN_ARCH == .amd64 /* LP64 */ {
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time_t :: i64
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} else {
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time_t :: i32
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}
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OS_Stat :: struct {
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device_id: dev_t,
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serial: ino_t,
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nlink: nlink_t,
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mode: mode_t,
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_padding0: i16,
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uid: uid_t,
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gid: gid_t,
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_padding1: i32,
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rdev: dev_t,
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last_access: Unix_File_Time,
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modified: Unix_File_Time,
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status_change: Unix_File_Time,
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birthtime: Unix_File_Time,
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size: off_t,
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blocks: blkcnt_t,
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block_size: blksize_t,
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flags: fflags_t,
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gen: u64,
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lspare: [10]u64,
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}
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// since FreeBSD v12
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Dirent :: struct {
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ino: ino_t,
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off: off_t,
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reclen: u16,
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type: u8,
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_pad0: u8,
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namlen: u16,
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_pad1: u16,
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name: [256]byte,
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}
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Dir :: distinct rawptr // DIR*
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// File type
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S_IFMT :: 0o170000 // Type of file mask
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S_IFIFO :: 0o010000 // Named pipe (fifo)
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S_IFCHR :: 0o020000 // Character special
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S_IFDIR :: 0o040000 // Directory
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S_IFBLK :: 0o060000 // Block special
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S_IFREG :: 0o100000 // Regular
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S_IFLNK :: 0o120000 // Symbolic link
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S_IFSOCK :: 0o140000 // Socket
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//S_ISVTX :: 0o001000 // Save swapped text even after use
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// File mode
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// Read, write, execute/search by owner
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S_IRWXU :: 0o0700 // RWX mask for owner
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S_IRUSR :: 0o0400 // R for owner
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S_IWUSR :: 0o0200 // W for owner
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S_IXUSR :: 0o0100 // X for owner
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// Read, write, execute/search by group
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S_IRWXG :: 0o0070 // RWX mask for group
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S_IRGRP :: 0o0040 // R for group
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S_IWGRP :: 0o0020 // W for group
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S_IXGRP :: 0o0010 // X for group
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// Read, write, execute/search by others
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S_IRWXO :: 0o0007 // RWX mask for other
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S_IROTH :: 0o0004 // R for other
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S_IWOTH :: 0o0002 // W for other
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S_IXOTH :: 0o0001 // X for other
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S_ISUID :: 0o4000 // Set user id on execution
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S_ISGID :: 0o2000 // Set group id on execution
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S_ISVTX :: 0o1000 // Directory restrcted delete
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S_ISLNK :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFLNK }
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S_ISREG :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFREG }
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S_ISDIR :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFDIR }
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S_ISCHR :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFCHR }
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S_ISBLK :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFBLK }
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S_ISFIFO :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFIFO }
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S_ISSOCK :: #force_inline proc(m: mode_t) -> bool { return (m & S_IFMT) == S_IFSOCK }
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F_OK :: 0 // Test for file existance
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X_OK :: 1 // Test for execute permission
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W_OK :: 2 // Test for write permission
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R_OK :: 4 // Test for read permission
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foreign libc {
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@(link_name="__error") __errno_location :: proc() -> ^int ---
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@(link_name="open") _unix_open :: proc(path: cstring, flags: c.int, mode: c.int) -> Handle ---
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@(link_name="close") _unix_close :: proc(fd: Handle) -> c.int ---
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@(link_name="read") _unix_read :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t ---
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@(link_name="write") _unix_write :: proc(fd: Handle, buf: rawptr, size: c.size_t) -> c.ssize_t ---
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@(link_name="lseek") _unix_seek :: proc(fd: Handle, offset: i64, whence: c.int) -> i64 ---
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@(link_name="getpagesize") _unix_getpagesize :: proc() -> c.int ---
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@(link_name="stat") _unix_stat :: proc(path: cstring, stat: ^OS_Stat) -> c.int ---
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@(link_name="lstat") _unix_lstat :: proc(path: cstring, sb: ^OS_Stat) -> c.int ---
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@(link_name="fstat") _unix_fstat :: proc(fd: Handle, stat: ^OS_Stat) -> c.int ---
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@(link_name="readlink") _unix_readlink :: proc(path: cstring, buf: ^byte, bufsiz: c.size_t) -> c.ssize_t ---
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@(link_name="access") _unix_access :: proc(path: cstring, mask: c.int) -> c.int ---
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@(link_name="getcwd") _unix_getcwd :: proc(buf: cstring, len: c.size_t) -> cstring ---
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@(link_name="chdir") _unix_chdir :: proc(buf: cstring) -> c.int ---
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@(link_name="rename") _unix_rename :: proc(old, new: cstring) -> c.int ---
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@(link_name="unlink") _unix_unlink :: proc(path: cstring) -> c.int ---
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@(link_name="rmdir") _unix_rmdir :: proc(path: cstring) -> c.int ---
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@(link_name="mkdir") _unix_mkdir :: proc(path: cstring, mode: mode_t) -> c.int ---
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@(link_name="fdopendir") _unix_fdopendir :: proc(fd: Handle) -> Dir ---
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@(link_name="closedir") _unix_closedir :: proc(dirp: Dir) -> c.int ---
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@(link_name="rewinddir") _unix_rewinddir :: proc(dirp: Dir) ---
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@(link_name="readdir_r") _unix_readdir_r :: proc(dirp: Dir, entry: ^Dirent, result: ^^Dirent) -> c.int ---
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@(link_name="malloc") _unix_malloc :: proc(size: c.size_t) -> rawptr ---
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@(link_name="calloc") _unix_calloc :: proc(num, size: c.size_t) -> rawptr ---
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@(link_name="free") _unix_free :: proc(ptr: rawptr) ---
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@(link_name="realloc") _unix_realloc :: proc(ptr: rawptr, size: c.size_t) -> rawptr ---
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@(link_name="getenv") _unix_getenv :: proc(cstring) -> cstring ---
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@(link_name="realpath") _unix_realpath :: proc(path: cstring, resolved_path: rawptr) -> rawptr ---
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@(link_name="sysctlbyname") _sysctlbyname :: proc(path: cstring, oldp: rawptr, oldlenp: rawptr, newp: rawptr, newlen: int) -> c.int ---
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@(link_name="exit") _unix_exit :: proc(status: c.int) -> ! ---
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}
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foreign dl {
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@(link_name="dlopen") _unix_dlopen :: proc(filename: cstring, flags: c.int) -> rawptr ---
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@(link_name="dlsym") _unix_dlsym :: proc(handle: rawptr, symbol: cstring) -> rawptr ---
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@(link_name="dlclose") _unix_dlclose :: proc(handle: rawptr) -> c.int ---
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@(link_name="dlerror") _unix_dlerror :: proc() -> cstring ---
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@(link_name="pthread_getthreadid_np") pthread_getthreadid_np :: proc() -> c.int ---
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}
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is_path_separator :: proc(r: rune) -> bool {
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return r == '/'
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}
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get_last_error :: proc "contextless" () -> int {
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return __errno_location()^
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}
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open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Errno) {
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runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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cstr := strings.clone_to_cstring(path, context.temp_allocator)
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handle := _unix_open(cstr, c.int(flags), c.int(mode))
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if handle == -1 {
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return INVALID_HANDLE, Errno(get_last_error())
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}
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return handle, ERROR_NONE
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}
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close :: proc(fd: Handle) -> Errno {
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result := _unix_close(fd)
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if result == -1 {
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return Errno(get_last_error())
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}
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return ERROR_NONE
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}
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read :: proc(fd: Handle, data: []byte) -> (int, Errno) {
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bytes_read := _unix_read(fd, &data[0], c.size_t(len(data)))
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if bytes_read == -1 {
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return -1, Errno(get_last_error())
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}
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return int(bytes_read), ERROR_NONE
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}
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write :: proc(fd: Handle, data: []byte) -> (int, Errno) {
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if len(data) == 0 {
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return 0, ERROR_NONE
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}
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bytes_written := _unix_write(fd, &data[0], c.size_t(len(data)))
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if bytes_written == -1 {
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return -1, Errno(get_last_error())
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}
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return int(bytes_written), ERROR_NONE
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}
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seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Errno) {
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res := _unix_seek(fd, offset, c.int(whence))
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if res == -1 {
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return -1, Errno(get_last_error())
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}
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return res, ERROR_NONE
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}
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file_size :: proc(fd: Handle) -> (i64, Errno) {
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s, err := fstat(fd)
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if err != ERROR_NONE {
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return -1, err
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}
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return s.size, ERROR_NONE
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}
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rename :: proc(old_path, new_path: string) -> Errno {
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runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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old_path_cstr := strings.clone_to_cstring(old_path, context.temp_allocator)
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new_path_cstr := strings.clone_to_cstring(new_path, context.temp_allocator)
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res := _unix_rename(old_path_cstr, new_path_cstr)
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if res == -1 {
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return Errno(get_last_error())
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}
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return ERROR_NONE
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}
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remove :: proc(path: string) -> Errno {
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runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
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res := _unix_unlink(path_cstr)
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if res == -1 {
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return Errno(get_last_error())
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}
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return ERROR_NONE
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}
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make_directory :: proc(path: string, mode: mode_t = 0o775) -> Errno {
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runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
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res := _unix_mkdir(path_cstr, mode)
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if res == -1 {
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return Errno(get_last_error())
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}
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return ERROR_NONE
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}
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remove_directory :: proc(path: string) -> Errno {
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runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
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res := _unix_rmdir(path_cstr)
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if res == -1 {
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return Errno(get_last_error())
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}
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return ERROR_NONE
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}
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is_file_handle :: proc(fd: Handle) -> bool {
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s, err := _fstat(fd)
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if err != ERROR_NONE {
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return false
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}
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return S_ISREG(s.mode)
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}
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is_file_path :: proc(path: string, follow_links: bool = true) -> bool {
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s: OS_Stat
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err: Errno
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if follow_links {
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s, err = _stat(path)
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} else {
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s, err = _lstat(path)
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}
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if err != ERROR_NONE {
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return false
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}
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return S_ISREG(s.mode)
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}
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is_dir_handle :: proc(fd: Handle) -> bool {
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s, err := _fstat(fd)
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if err != ERROR_NONE {
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return false
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}
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return S_ISDIR(s.mode)
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}
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is_dir_path :: proc(path: string, follow_links: bool = true) -> bool {
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s: OS_Stat
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err: Errno
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if follow_links {
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s, err = _stat(path)
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} else {
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s, err = _lstat(path)
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}
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if err != ERROR_NONE {
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return false
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}
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return S_ISDIR(s.mode)
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}
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is_file :: proc {is_file_path, is_file_handle}
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is_dir :: proc {is_dir_path, is_dir_handle}
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// NOTE(bill): Uses startup to initialize it
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stdin: Handle = 0
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stdout: Handle = 1
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stderr: Handle = 2
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/* TODO(zangent): Implement these!
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last_write_time :: proc(fd: Handle) -> File_Time {}
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last_write_time_by_name :: proc(name: string) -> File_Time {}
|
|
*/
|
|
last_write_time :: proc(fd: Handle) -> (File_Time, Errno) {
|
|
s, err := _fstat(fd)
|
|
if err != ERROR_NONE {
|
|
return 0, err
|
|
}
|
|
modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds
|
|
return File_Time(modified), ERROR_NONE
|
|
}
|
|
|
|
last_write_time_by_name :: proc(name: string) -> (File_Time, Errno) {
|
|
s, err := _stat(name)
|
|
if err != ERROR_NONE {
|
|
return 0, err
|
|
}
|
|
modified := s.modified.seconds * 1_000_000_000 + s.modified.nanoseconds
|
|
return File_Time(modified), ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_stat :: proc(path: string) -> (OS_Stat, Errno) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
s: OS_Stat = ---
|
|
result := _unix_lstat(cstr, &s)
|
|
if result == -1 {
|
|
return s, Errno(get_last_error())
|
|
}
|
|
return s, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_lstat :: proc(path: string) -> (OS_Stat, Errno) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
|
|
// deliberately uninitialized
|
|
s: OS_Stat = ---
|
|
res := _unix_lstat(cstr, &s)
|
|
if res == -1 {
|
|
return s, Errno(get_last_error())
|
|
}
|
|
return s, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_fstat :: proc(fd: Handle) -> (OS_Stat, Errno) {
|
|
s: OS_Stat = ---
|
|
result := _unix_fstat(fd, &s)
|
|
if result == -1 {
|
|
return s, Errno(get_last_error())
|
|
}
|
|
return s, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_fdopendir :: proc(fd: Handle) -> (Dir, Errno) {
|
|
dirp := _unix_fdopendir(fd)
|
|
if dirp == cast(Dir)nil {
|
|
return nil, Errno(get_last_error())
|
|
}
|
|
return dirp, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_closedir :: proc(dirp: Dir) -> Errno {
|
|
rc := _unix_closedir(dirp)
|
|
if rc != 0 {
|
|
return Errno(get_last_error())
|
|
}
|
|
return ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_rewinddir :: proc(dirp: Dir) {
|
|
_unix_rewinddir(dirp)
|
|
}
|
|
|
|
@private
|
|
_readdir :: proc(dirp: Dir) -> (entry: Dirent, err: Errno, end_of_stream: bool) {
|
|
result: ^Dirent
|
|
rc := _unix_readdir_r(dirp, &entry, &result)
|
|
|
|
if rc != 0 {
|
|
err = Errno(get_last_error())
|
|
return
|
|
}
|
|
err = ERROR_NONE
|
|
|
|
if result == nil {
|
|
end_of_stream = true
|
|
return
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
@private
|
|
_readlink :: proc(path: string) -> (string, Errno) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == context.allocator)
|
|
|
|
path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
|
|
bufsz : uint = MAX_PATH
|
|
buf := make([]byte, MAX_PATH)
|
|
for {
|
|
rc := _unix_readlink(path_cstr, &(buf[0]), bufsz)
|
|
if rc == -1 {
|
|
delete(buf)
|
|
return "", Errno(get_last_error())
|
|
} else if rc == int(bufsz) {
|
|
bufsz += MAX_PATH
|
|
delete(buf)
|
|
buf = make([]byte, bufsz)
|
|
} else {
|
|
return strings.string_from_ptr(&buf[0], rc), ERROR_NONE
|
|
}
|
|
}
|
|
|
|
return "", Errno{}
|
|
}
|
|
|
|
// XXX FreeBSD
|
|
absolute_path_from_handle :: proc(fd: Handle) -> (string, Errno) {
|
|
return "", Errno(ENOSYS)
|
|
}
|
|
|
|
absolute_path_from_relative :: proc(rel: string) -> (path: string, err: Errno) {
|
|
rel := rel
|
|
if rel == "" {
|
|
rel = "."
|
|
}
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == context.allocator)
|
|
|
|
rel_cstr := strings.clone_to_cstring(rel, context.temp_allocator)
|
|
|
|
path_ptr := _unix_realpath(rel_cstr, nil)
|
|
if path_ptr == nil {
|
|
return "", Errno(get_last_error())
|
|
}
|
|
defer _unix_free(path_ptr)
|
|
|
|
path_cstr := transmute(cstring)path_ptr
|
|
path = strings.clone( string(path_cstr) )
|
|
|
|
return path, ERROR_NONE
|
|
}
|
|
|
|
access :: proc(path: string, mask: int) -> (bool, Errno) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
result := _unix_access(cstr, c.int(mask))
|
|
if result == -1 {
|
|
return false, Errno(get_last_error())
|
|
}
|
|
return true, ERROR_NONE
|
|
}
|
|
|
|
heap_alloc :: proc(size: int, zero_memory := true) -> rawptr {
|
|
if size <= 0 {
|
|
return nil
|
|
}
|
|
if zero_memory {
|
|
return _unix_calloc(1, c.size_t(size))
|
|
} else {
|
|
return _unix_malloc(c.size_t(size))
|
|
}
|
|
}
|
|
|
|
heap_resize :: proc(ptr: rawptr, new_size: int) -> rawptr {
|
|
// NOTE: _unix_realloc doesn't guarantee new memory will be zeroed on
|
|
// POSIX platforms. Ensure your caller takes this into account.
|
|
return _unix_realloc(ptr, c.size_t(new_size))
|
|
}
|
|
|
|
heap_free :: proc(ptr: rawptr) {
|
|
_unix_free(ptr)
|
|
}
|
|
|
|
lookup_env :: proc(key: string, allocator := context.allocator) -> (value: string, found: bool) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = context.temp_allocator == allocator)
|
|
|
|
path_str := strings.clone_to_cstring(key, context.temp_allocator)
|
|
cstr := _unix_getenv(path_str)
|
|
if cstr == nil {
|
|
return "", false
|
|
}
|
|
return strings.clone(string(cstr), allocator), true
|
|
}
|
|
|
|
get_env :: proc(key: string, allocator := context.allocator) -> (value: string) {
|
|
value, _ = lookup_env(key, allocator)
|
|
return
|
|
}
|
|
|
|
get_current_directory :: proc() -> string {
|
|
// NOTE(tetra): I would use PATH_MAX here, but I was not able to find
|
|
// an authoritative value for it across all systems.
|
|
// The largest value I could find was 4096, so might as well use the page size.
|
|
page_size := get_page_size()
|
|
buf := make([dynamic]u8, page_size)
|
|
#no_bounds_check for {
|
|
cwd := _unix_getcwd(cstring(&buf[0]), c.size_t(len(buf)))
|
|
if cwd != nil {
|
|
return string(cwd)
|
|
}
|
|
if Errno(get_last_error()) != ERANGE {
|
|
delete(buf)
|
|
return ""
|
|
}
|
|
resize(&buf, len(buf)+page_size)
|
|
}
|
|
unreachable()
|
|
}
|
|
|
|
set_current_directory :: proc(path: string) -> (err: Errno) {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
res := _unix_chdir(cstr)
|
|
if res == -1 do return Errno(get_last_error())
|
|
return ERROR_NONE
|
|
}
|
|
|
|
exit :: proc "contextless" (code: int) -> ! {
|
|
runtime._cleanup_runtime_contextless()
|
|
_unix_exit(c.int(code))
|
|
}
|
|
|
|
current_thread_id :: proc "contextless" () -> int {
|
|
return cast(int) pthread_getthreadid_np()
|
|
}
|
|
|
|
dlopen :: proc(filename: string, flags: int) -> rawptr {
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
cstr := strings.clone_to_cstring(filename, context.temp_allocator)
|
|
handle := _unix_dlopen(cstr, c.int(flags))
|
|
return handle
|
|
}
|
|
dlsym :: proc(handle: rawptr, symbol: string) -> rawptr {
|
|
assert(handle != nil)
|
|
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
|
|
cstr := strings.clone_to_cstring(symbol, context.temp_allocator)
|
|
proc_handle := _unix_dlsym(handle, cstr)
|
|
return proc_handle
|
|
}
|
|
dlclose :: proc(handle: rawptr) -> bool {
|
|
assert(handle != nil)
|
|
return _unix_dlclose(handle) == 0
|
|
}
|
|
dlerror :: proc() -> string {
|
|
return string(_unix_dlerror())
|
|
}
|
|
|
|
get_page_size :: proc() -> int {
|
|
// NOTE(tetra): The page size never changes, so why do anything complicated
|
|
// if we don't have to.
|
|
@static page_size := -1
|
|
if page_size != -1 do return page_size
|
|
|
|
page_size = int(_unix_getpagesize())
|
|
return page_size
|
|
}
|
|
|
|
@(private)
|
|
_processor_core_count :: proc() -> int {
|
|
count : int = 0
|
|
count_size := size_of(count)
|
|
if _sysctlbyname("hw.logicalcpu", &count, &count_size, nil, 0) == 0 {
|
|
if count > 0 {
|
|
return count
|
|
}
|
|
}
|
|
|
|
return 1
|
|
}
|
|
|
|
|
|
_alloc_command_line_arguments :: proc() -> []string {
|
|
res := make([]string, len(runtime.args__))
|
|
for arg, i in runtime.args__ {
|
|
res[i] = string(arg)
|
|
}
|
|
return res
|
|
}
|