mirror of
https://github.com/odin-lang/Odin.git
synced 2025-12-29 17:34:34 +00:00
856 lines
26 KiB
Odin
856 lines
26 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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import "core:strconv"
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import "core:intrinsics"
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import "core:sys/unix"
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Handle :: distinct i32
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Pid :: 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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EBADF: Errno : 9
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EAGAIN: Errno : 11
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ENOMEM: Errno : 12
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EACCES: Errno : 13
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EFAULT: Errno : 14
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EEXIST: Errno : 17
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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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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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EPIPE: Errno : 32
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ERANGE: Errno : 34 /* Result too large */
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EDEADLK: Errno : 35 /* Resource deadlock would occur */
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ENAMETOOLONG: Errno : 36 /* File name too long */
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ENOLCK: Errno : 37 /* No record locks available */
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ENOSYS: Errno : 38 /* Invalid system call number */
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ENOTEMPTY: Errno : 39 /* Directory not empty */
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ELOOP: Errno : 40 /* Too many symbolic links encountered */
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EWOULDBLOCK: Errno : EAGAIN /* Operation would block */
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ENOMSG: Errno : 42 /* No message of desired type */
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EIDRM: Errno : 43 /* Identifier removed */
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ECHRNG: Errno : 44 /* Channel number out of range */
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EL2NSYNC: Errno : 45 /* Level 2 not synchronized */
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EL3HLT: Errno : 46 /* Level 3 halted */
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EL3RST: Errno : 47 /* Level 3 reset */
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ELNRNG: Errno : 48 /* Link number out of range */
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EUNATCH: Errno : 49 /* Protocol driver not attached */
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ENOCSI: Errno : 50 /* No CSI structure available */
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EL2HLT: Errno : 51 /* Level 2 halted */
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EBADE: Errno : 52 /* Invalid exchange */
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EBADR: Errno : 53 /* Invalid request descriptor */
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EXFULL: Errno : 54 /* Exchange full */
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ENOANO: Errno : 55 /* No anode */
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EBADRQC: Errno : 56 /* Invalid request code */
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EBADSLT: Errno : 57 /* Invalid slot */
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EDEADLOCK: Errno : EDEADLK
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EBFONT: Errno : 59 /* Bad font file format */
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ENOSTR: Errno : 60 /* Device not a stream */
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ENODATA: Errno : 61 /* No data available */
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ETIME: Errno : 62 /* Timer expired */
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ENOSR: Errno : 63 /* Out of streams resources */
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ENONET: Errno : 64 /* Machine is not on the network */
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ENOPKG: Errno : 65 /* Package not installed */
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EREMOTE: Errno : 66 /* Object is remote */
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ENOLINK: Errno : 67 /* Link has been severed */
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EADV: Errno : 68 /* Advertise error */
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ESRMNT: Errno : 69 /* Srmount error */
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ECOMM: Errno : 70 /* Communication error on send */
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EPROTO: Errno : 71 /* Protocol error */
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EMULTIHOP: Errno : 72 /* Multihop attempted */
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EDOTDOT: Errno : 73 /* RFS specific error */
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EBADMSG: Errno : 74 /* Not a data message */
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EOVERFLOW: Errno : 75 /* Value too large for defined data type */
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ENOTUNIQ: Errno : 76 /* Name not unique on network */
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EBADFD: Errno : 77 /* File descriptor in bad state */
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EREMCHG: Errno : 78 /* Remote address changed */
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ELIBACC: Errno : 79 /* Can not access a needed shared library */
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ELIBBAD: Errno : 80 /* Accessing a corrupted shared library */
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ELIBSCN: Errno : 81 /* .lib section in a.out corrupted */
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ELIBMAX: Errno : 82 /* Attempting to link in too many shared libraries */
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ELIBEXEC: Errno : 83 /* Cannot exec a shared library directly */
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EILSEQ: Errno : 84 /* Illegal byte sequence */
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ERESTART: Errno : 85 /* Interrupted system call should be restarted */
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ESTRPIPE: Errno : 86 /* Streams pipe error */
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EUSERS: Errno : 87 /* Too many users */
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ENOTSOCK: Errno : 88 /* Socket operation on non-socket */
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EDESTADDRREQ: Errno : 89 /* Destination address required */
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EMSGSIZE: Errno : 90 /* Message too long */
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EPROTOTYPE: Errno : 91 /* Protocol wrong type for socket */
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ENOPROTOOPT: Errno : 92 /* Protocol not available */
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EPROTONOSUPPORT:Errno : 93 /* Protocol not supported */
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ESOCKTNOSUPPORT:Errno : 94 /* Socket type not supported */
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EOPNOTSUPP: Errno : 95 /* Operation not supported on transport endpoint */
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EPFNOSUPPORT: Errno : 96 /* Protocol family not supported */
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EAFNOSUPPORT: Errno : 97 /* Address family not supported by protocol */
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EADDRINUSE: Errno : 98 /* Address already in use */
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EADDRNOTAVAIL: Errno : 99 /* Cannot assign requested address */
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ENETDOWN: Errno : 100 /* Network is down */
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ENETUNREACH: Errno : 101 /* Network is unreachable */
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ENETRESET: Errno : 102 /* Network dropped connection because of reset */
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ECONNABORTED: Errno : 103 /* Software caused connection abort */
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ECONNRESET: Errno : 104 /* Connection reset by peer */
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ENOBUFS: Errno : 105 /* No buffer space available */
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EISCONN: Errno : 106 /* Transport endpoint is already connected */
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ENOTCONN: Errno : 107 /* Transport endpoint is not connected */
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ESHUTDOWN: Errno : 108 /* Cannot send after transport endpoint shutdown */
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ETOOMANYREFS: Errno : 109 /* Too many references: cannot splice */
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ETIMEDOUT: Errno : 110 /* Connection timed out */
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ECONNREFUSED: Errno : 111 /* Connection refused */
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EHOSTDOWN: Errno : 112 /* Host is down */
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EHOSTUNREACH: Errno : 113 /* No route to host */
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EALREADY: Errno : 114 /* Operation already in progress */
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EINPROGRESS: Errno : 115 /* Operation now in progress */
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ESTALE: Errno : 116 /* Stale file handle */
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EUCLEAN: Errno : 117 /* Structure needs cleaning */
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ENOTNAM: Errno : 118 /* Not a XENIX named type file */
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ENAVAIL: Errno : 119 /* No XENIX semaphores available */
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EISNAM: Errno : 120 /* Is a named type file */
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EREMOTEIO: Errno : 121 /* Remote I/O error */
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EDQUOT: Errno : 122 /* Quota exceeded */
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ENOMEDIUM: Errno : 123 /* No medium found */
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EMEDIUMTYPE: Errno : 124 /* Wrong medium type */
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ECANCELED: Errno : 125 /* Operation Canceled */
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ENOKEY: Errno : 126 /* Required key not available */
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EKEYEXPIRED: Errno : 127 /* Key has expired */
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EKEYREVOKED: Errno : 128 /* Key has been revoked */
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EKEYREJECTED: Errno : 129 /* Key was rejected by service */
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/* for robust mutexes */
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EOWNERDEAD: Errno : 130 /* Owner died */
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ENOTRECOVERABLE: Errno : 131 /* State not recoverable */
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ERFKILL: Errno : 132 /* Operation not possible due to RF-kill */
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EHWPOISON: Errno : 133 /* Memory page has hardware error */
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ADDR_NO_RANDOMIZE :: 0x40000
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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_SET :: 0
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SEEK_CUR :: 1
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SEEK_END :: 2
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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(zangent): 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
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RTLD_GLOBAL :: 0x100
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// "Argv" arguments converted to Odin strings
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args := _alloc_command_line_arguments()
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Unix_File_Time :: struct {
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seconds: i64,
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nanoseconds: i64,
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}
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OS_Stat :: struct {
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device_id: u64, // ID of device containing file
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serial: u64, // File serial number
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nlink: u64, // Number of hard links
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mode: u32, // Mode of the file
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uid: u32, // User ID of the file's owner
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gid: u32, // Group ID of the file's group
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_padding: i32, // 32 bits of padding
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rdev: u64, // Device ID, if device
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size: i64, // Size of the file, in bytes
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block_size: i64, // Optimal bllocksize for I/O
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blocks: i64, // Number of 512-byte blocks allocated
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last_access: Unix_File_Time, // Time of last access
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modified: Unix_File_Time, // Time of last modification
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status_change: Unix_File_Time, // Time of last status change
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_reserve1,
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_reserve2,
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_reserve3: i64,
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}
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// NOTE(laleksic, 2021-01-21): Comment and rename these to match OS_Stat above
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Dirent :: struct {
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ino: u64,
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off: u64,
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reclen: u16,
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type: u8,
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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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// 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: u32) -> bool { return (m & S_IFMT) == S_IFLNK }
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S_ISREG :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFREG }
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S_ISDIR :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFDIR }
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S_ISCHR :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFCHR }
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S_ISBLK :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFBLK }
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S_ISFIFO :: #force_inline proc(m: u32) -> bool { return (m & S_IFMT) == S_IFIFO }
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S_ISSOCK :: #force_inline proc(m: u32) -> 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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AT_FDCWD :: ~uintptr(99) /* -100 */
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AT_REMOVEDIR :: uintptr(0x200)
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AT_SYMLINK_NOFOLLOW :: uintptr(0x100)
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_unix_personality :: proc(persona: u64) -> int {
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return int(intrinsics.syscall(unix.SYS_personality, uintptr(persona)))
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}
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_unix_fork :: proc() -> Pid {
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when ODIN_ARCH != .arm64 {
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res := int(intrinsics.syscall(unix.SYS_fork))
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} else {
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res := int(intrinsics.syscall(unix.SYS_clone, unix.SIGCHLD))
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}
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return -1 if res < 0 else Pid(res)
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}
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_unix_open :: proc(path: cstring, flags: int, mode: int = 0o000) -> Handle {
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when ODIN_ARCH != .arm64 {
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res := int(intrinsics.syscall(unix.SYS_open, uintptr(rawptr(path)), uintptr(flags), uintptr(mode)))
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} else { // NOTE: arm64 does not have open
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res := int(intrinsics.syscall(unix.SYS_openat, AT_FDCWD, uintptr(rawptr(path)), uintptr(flags), uintptr(mode)))
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}
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return -1 if res < 0 else Handle(res)
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}
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_unix_close :: proc(fd: Handle) -> int {
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return int(intrinsics.syscall(unix.SYS_close, uintptr(fd)))
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}
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_unix_read :: proc(fd: Handle, buf: rawptr, size: uint) -> int {
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return int(intrinsics.syscall(unix.SYS_read, uintptr(fd), uintptr(buf), uintptr(size)))
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}
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_unix_write :: proc(fd: Handle, buf: rawptr, size: uint) -> int {
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return int(intrinsics.syscall(unix.SYS_write, uintptr(fd), uintptr(buf), uintptr(size)))
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}
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_unix_seek :: proc(fd: Handle, offset: i64, whence: int) -> i64 {
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when ODIN_ARCH == .amd64 || ODIN_ARCH == .arm64 {
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return i64(intrinsics.syscall(unix.SYS_lseek, uintptr(fd), uintptr(offset), uintptr(whence)))
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} else {
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low := uintptr(offset & 0xFFFFFFFF)
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high := uintptr(offset >> 32)
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result: i64
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res := i64(intrinsics.syscall(unix.SYS__llseek, uintptr(fd), high, low, &result, uintptr(whence)))
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return -1 if res < 0 else result
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}
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}
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_unix_stat :: proc(path: cstring, stat: ^OS_Stat) -> int {
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when ODIN_ARCH == .amd64 {
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return int(intrinsics.syscall(unix.SYS_stat, uintptr(rawptr(path)), uintptr(stat)))
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} else when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_stat64, uintptr(rawptr(path)), uintptr(stat)))
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} else { // NOTE: arm64 does not have stat
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return int(intrinsics.syscall(unix.SYS_fstatat, AT_FDCWD, uintptr(rawptr(path)), uintptr(stat), 0))
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}
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}
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_unix_fstat :: proc(fd: Handle, stat: ^OS_Stat) -> int {
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when ODIN_ARCH == .amd64 || ODIN_ARCH == .arm64 {
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return int(intrinsics.syscall(unix.SYS_fstat, uintptr(fd), uintptr(stat)))
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} else {
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return int(intrinsics.syscall(unix.SYS_fstat64, uintptr(fd), uintptr(stat)))
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}
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}
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_unix_lstat :: proc(path: cstring, stat: ^OS_Stat) -> int {
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when ODIN_ARCH == .amd64 {
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return int(intrinsics.syscall(unix.SYS_lstat, uintptr(rawptr(path)), uintptr(stat)))
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} else when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_lstat64, uintptr(rawptr(path)), uintptr(stat)))
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} else { // NOTE: arm64 does not have any lstat
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return int(intrinsics.syscall(unix.SYS_fstatat, AT_FDCWD, uintptr(rawptr(path)), uintptr(stat), AT_SYMLINK_NOFOLLOW))
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}
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}
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_unix_readlink :: proc(path: cstring, buf: rawptr, bufsiz: uint) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_readlink, uintptr(rawptr(path)), uintptr(buf), uintptr(bufsiz)))
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} else { // NOTE: arm64 does not have readlink
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return int(intrinsics.syscall(unix.SYS_readlinkat, AT_FDCWD, uintptr(rawptr(path)), uintptr(buf), uintptr(bufsiz)))
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}
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}
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_unix_access :: proc(path: cstring, mask: int) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_access, uintptr(rawptr(path)), uintptr(mask)))
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} else { // NOTE: arm64 does not have access
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return int(intrinsics.syscall(unix.SYS_faccessat, AT_FDCWD, uintptr(rawptr(path)), uintptr(mask)))
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}
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}
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_unix_getcwd :: proc(buf: rawptr, size: uint) -> int {
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return int(intrinsics.syscall(unix.SYS_getcwd, uintptr(buf), uintptr(size)))
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}
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_unix_chdir :: proc(path: cstring) -> int {
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return int(intrinsics.syscall(unix.SYS_chdir, uintptr(rawptr(path))))
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}
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_unix_rename :: proc(old, new: cstring) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_rename, uintptr(rawptr(old)), uintptr(rawptr(new))))
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} else { // NOTE: arm64 does not have rename
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return int(intrinsics.syscall(unix.SYS_renameat, AT_FDCWD, uintptr(rawptr(old)), uintptr(rawptr(new))))
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}
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}
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_unix_unlink :: proc(path: cstring) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_unlink, uintptr(rawptr(path))))
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} else { // NOTE: arm64 does not have unlink
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return int(intrinsics.syscall(unix.SYS_unlinkat, AT_FDCWD, uintptr(rawptr(path)), 0))
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}
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}
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_unix_rmdir :: proc(path: cstring) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_rmdir, uintptr(rawptr(path))))
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} else { // NOTE: arm64 does not have rmdir
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return int(intrinsics.syscall(unix.SYS_unlinkat, AT_FDCWD, uintptr(rawptr(path)), AT_REMOVEDIR))
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}
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}
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_unix_mkdir :: proc(path: cstring, mode: u32) -> int {
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when ODIN_ARCH != .arm64 {
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return int(intrinsics.syscall(unix.SYS_mkdir, uintptr(rawptr(path)), uintptr(mode)))
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} else { // NOTE: arm64 does not have mkdir
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return int(intrinsics.syscall(unix.SYS_mkdirat, AT_FDCWD, uintptr(rawptr(path)), uintptr(mode)))
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}
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}
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foreign libc {
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@(link_name="__errno_location") __errno_location :: proc() -> ^int ---
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@(link_name="getpagesize") _unix_getpagesize :: proc() -> 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 ---
|
|
@(link_name="free") _unix_free :: proc(ptr: rawptr) ---
|
|
@(link_name="realloc") _unix_realloc :: proc(ptr: rawptr, size: c.size_t) -> rawptr ---
|
|
|
|
@(link_name="getenv") _unix_getenv :: proc(cstring) -> cstring ---
|
|
@(link_name="realpath") _unix_realpath :: proc(path: cstring, resolved_path: rawptr) -> rawptr ---
|
|
|
|
@(link_name="exit") _unix_exit :: proc(status: c.int) -> ! ---
|
|
}
|
|
foreign dl {
|
|
@(link_name="dlopen") _unix_dlopen :: proc(filename: cstring, flags: c.int) -> rawptr ---
|
|
@(link_name="dlsym") _unix_dlsym :: proc(handle: rawptr, symbol: cstring) -> rawptr ---
|
|
@(link_name="dlclose") _unix_dlclose :: proc(handle: rawptr) -> c.int ---
|
|
@(link_name="dlerror") _unix_dlerror :: proc() -> cstring ---
|
|
}
|
|
|
|
is_path_separator :: proc(r: rune) -> bool {
|
|
return r == '/'
|
|
}
|
|
|
|
// determine errno from syscall return value
|
|
@private
|
|
_get_errno :: proc(res: int) -> Errno {
|
|
if res < 0 && res > -4096 {
|
|
return Errno(-res)
|
|
}
|
|
return 0
|
|
}
|
|
|
|
// get errno from libc
|
|
get_last_error :: proc() -> int {
|
|
return __errno_location()^
|
|
}
|
|
|
|
personality :: proc(persona: u64) -> (Errno) {
|
|
res := _unix_personality(persona)
|
|
if res == -1 {
|
|
return _get_errno(res)
|
|
}
|
|
return ERROR_NONE
|
|
}
|
|
|
|
fork :: proc() -> (Pid, Errno) {
|
|
pid := _unix_fork()
|
|
if pid == -1 {
|
|
return -1, _get_errno(int(pid))
|
|
}
|
|
return pid, ERROR_NONE
|
|
}
|
|
|
|
open :: proc(path: string, flags: int = O_RDONLY, mode: int = 0) -> (Handle, Errno) {
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
handle := _unix_open(cstr, flags, mode)
|
|
if handle < 0 {
|
|
return INVALID_HANDLE, _get_errno(int(handle))
|
|
}
|
|
return handle, ERROR_NONE
|
|
}
|
|
|
|
close :: proc(fd: Handle) -> Errno {
|
|
return _get_errno(_unix_close(fd))
|
|
}
|
|
|
|
read :: proc(fd: Handle, data: []byte) -> (int, Errno) {
|
|
bytes_read := _unix_read(fd, &data[0], c.size_t(len(data)))
|
|
if bytes_read < 0 {
|
|
return -1, _get_errno(bytes_read)
|
|
}
|
|
return bytes_read, ERROR_NONE
|
|
}
|
|
|
|
write :: proc(fd: Handle, data: []byte) -> (int, Errno) {
|
|
if len(data) == 0 {
|
|
return 0, ERROR_NONE
|
|
}
|
|
bytes_written := _unix_write(fd, &data[0], uint(len(data)))
|
|
if bytes_written < 0 {
|
|
return -1, _get_errno(bytes_written)
|
|
}
|
|
return int(bytes_written), ERROR_NONE
|
|
}
|
|
|
|
seek :: proc(fd: Handle, offset: i64, whence: int) -> (i64, Errno) {
|
|
res := _unix_seek(fd, offset, whence)
|
|
if res < 0 {
|
|
return -1, _get_errno(int(res))
|
|
}
|
|
return res, ERROR_NONE
|
|
}
|
|
|
|
file_size :: proc(fd: Handle) -> (i64, Errno) {
|
|
// deliberately uninitialized; the syscall fills this buffer for us
|
|
s: OS_Stat = ---
|
|
result := _unix_fstat(fd, &s)
|
|
if result < 0 {
|
|
return 0, _get_errno(result)
|
|
}
|
|
return max(s.size, 0), ERROR_NONE
|
|
}
|
|
|
|
rename :: proc(old_path, new_path: string) -> Errno {
|
|
old_path_cstr := strings.clone_to_cstring(old_path, context.temp_allocator)
|
|
new_path_cstr := strings.clone_to_cstring(new_path, context.temp_allocator)
|
|
return _get_errno(_unix_rename(old_path_cstr, new_path_cstr))
|
|
}
|
|
|
|
remove :: proc(path: string) -> Errno {
|
|
path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
return _get_errno(_unix_unlink(path_cstr))
|
|
}
|
|
|
|
make_directory :: proc(path: string, mode: u32 = 0o775) -> Errno {
|
|
path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
return _get_errno(_unix_mkdir(path_cstr, mode))
|
|
}
|
|
|
|
remove_directory :: proc(path: string) -> Errno {
|
|
path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
return _get_errno(_unix_rmdir(path_cstr))
|
|
}
|
|
|
|
is_file_handle :: proc(fd: Handle) -> bool {
|
|
s, err := _fstat(fd)
|
|
if err != ERROR_NONE {
|
|
return false
|
|
}
|
|
return S_ISREG(s.mode)
|
|
}
|
|
|
|
is_file_path :: proc(path: string, follow_links: bool = true) -> bool {
|
|
s: OS_Stat
|
|
err: Errno
|
|
if follow_links {
|
|
s, err = _stat(path)
|
|
} else {
|
|
s, err = _lstat(path)
|
|
}
|
|
if err != ERROR_NONE {
|
|
return false
|
|
}
|
|
return S_ISREG(s.mode)
|
|
}
|
|
|
|
|
|
is_dir_handle :: proc(fd: Handle) -> bool {
|
|
s, err := _fstat(fd)
|
|
if err != ERROR_NONE {
|
|
return false
|
|
}
|
|
return S_ISDIR(s.mode)
|
|
}
|
|
|
|
is_dir_path :: proc(path: string, follow_links: bool = true) -> bool {
|
|
s: OS_Stat
|
|
err: Errno
|
|
if follow_links {
|
|
s, err = _stat(path)
|
|
} else {
|
|
s, err = _lstat(path)
|
|
}
|
|
if err != ERROR_NONE {
|
|
return false
|
|
}
|
|
return S_ISDIR(s.mode)
|
|
}
|
|
|
|
is_file :: proc {is_file_path, is_file_handle}
|
|
is_dir :: proc {is_dir_path, is_dir_handle}
|
|
|
|
|
|
// NOTE(bill): Uses startup to initialize it
|
|
|
|
stdin: Handle = 0
|
|
stdout: Handle = 1
|
|
stderr: Handle = 2
|
|
|
|
/* TODO(zangent): Implement these!
|
|
last_write_time :: proc(fd: Handle) -> File_Time {}
|
|
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) {
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
|
|
// deliberately uninitialized; the syscall fills this buffer for us
|
|
s: OS_Stat = ---
|
|
result := _unix_stat(cstr, &s)
|
|
if result < 0 {
|
|
return s, _get_errno(result)
|
|
}
|
|
return s, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_lstat :: proc(path: string) -> (OS_Stat, Errno) {
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
|
|
// deliberately uninitialized; the syscall fills this buffer for us
|
|
s: OS_Stat = ---
|
|
result := _unix_lstat(cstr, &s)
|
|
if result < 0 {
|
|
return s, _get_errno(result)
|
|
}
|
|
return s, ERROR_NONE
|
|
}
|
|
|
|
@private
|
|
_fstat :: proc(fd: Handle) -> (OS_Stat, Errno) {
|
|
// deliberately uninitialized; the syscall fills this buffer for us
|
|
s: OS_Stat = ---
|
|
result := _unix_fstat(fd, &s)
|
|
if result < 0 {
|
|
return s, _get_errno(result)
|
|
}
|
|
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
|
|
}
|
|
end_of_stream = false
|
|
|
|
return
|
|
}
|
|
|
|
@private
|
|
_readlink :: proc(path: string) -> (string, Errno) {
|
|
path_cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
|
|
bufsz : uint = 256
|
|
buf := make([]byte, bufsz)
|
|
for {
|
|
rc := _unix_readlink(path_cstr, &(buf[0]), bufsz)
|
|
if rc < 0 {
|
|
delete(buf)
|
|
return "", _get_errno(rc)
|
|
} else if rc == int(bufsz) {
|
|
// NOTE(laleksic, 2021-01-21): Any cleaner way to resize the slice?
|
|
bufsz *= 2
|
|
delete(buf)
|
|
buf = make([]byte, bufsz)
|
|
} else {
|
|
return strings.string_from_ptr(&buf[0], rc), ERROR_NONE
|
|
}
|
|
}
|
|
}
|
|
|
|
absolute_path_from_handle :: proc(fd: Handle) -> (string, Errno) {
|
|
buf : [256]byte
|
|
fd_str := strconv.itoa( buf[:], cast(int)fd )
|
|
|
|
procfs_path := strings.concatenate( []string{ "/proc/self/fd/", fd_str } )
|
|
defer delete(procfs_path)
|
|
|
|
return _readlink(procfs_path)
|
|
}
|
|
|
|
absolute_path_from_relative :: proc(rel: string) -> (path: string, err: Errno) {
|
|
rel := rel
|
|
if rel == "" {
|
|
rel = "."
|
|
}
|
|
|
|
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) {
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
result := _unix_access(cstr, mask)
|
|
if result < 0 {
|
|
return false, _get_errno(result)
|
|
}
|
|
return true, ERROR_NONE
|
|
}
|
|
|
|
heap_alloc :: proc(size: int) -> rawptr {
|
|
assert(size >= 0)
|
|
return _unix_calloc(1, 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)
|
|
}
|
|
|
|
getenv :: proc(name: string) -> (string, bool) {
|
|
path_str := strings.clone_to_cstring(name, context.temp_allocator)
|
|
cstr := _unix_getenv(path_str)
|
|
if cstr == nil {
|
|
return "", false
|
|
}
|
|
return string(cstr), true
|
|
}
|
|
|
|
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)
|
|
for {
|
|
#no_bounds_check res := _unix_getcwd(&buf[0], uint(len(buf)))
|
|
|
|
if res >= 0 {
|
|
return strings.string_from_nul_terminated_ptr(&buf[0], len(buf))
|
|
}
|
|
if _get_errno(res) != ERANGE {
|
|
return ""
|
|
}
|
|
resize(&buf, len(buf)+page_size)
|
|
}
|
|
unreachable()
|
|
}
|
|
|
|
set_current_directory :: proc(path: string) -> (err: Errno) {
|
|
cstr := strings.clone_to_cstring(path, context.temp_allocator)
|
|
res := _unix_chdir(cstr)
|
|
if res < 0 {
|
|
return _get_errno(res)
|
|
}
|
|
return ERROR_NONE
|
|
}
|
|
|
|
exit :: proc "contextless" (code: int) -> ! {
|
|
runtime._cleanup_runtime_contextless()
|
|
_unix_exit(c.int(code))
|
|
}
|
|
|
|
current_thread_id :: proc "contextless" () -> int {
|
|
return unix.sys_gettid()
|
|
}
|
|
|
|
dlopen :: proc(filename: string, flags: int) -> rawptr {
|
|
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)
|
|
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 {
|
|
return page_size
|
|
}
|
|
|
|
page_size = int(_unix_getpagesize())
|
|
return page_size
|
|
}
|
|
|
|
|
|
_alloc_command_line_arguments :: proc() -> []string {
|
|
res := make([]string, len(runtime.args__))
|
|
for arg, i in runtime.args__ {
|
|
res[i] = string(arg)
|
|
}
|
|
return res
|
|
}
|