Implement more Linux syscalls (#5705)

* Implement some more Linux syscalls

* Fixed typo and removed stray comments

* Correct types for some syscalls

* Fix types and add variadic argument for prctl

* flag fixes

* when x86/amd64 only

* more fixes

---------

Co-authored-by: Laytan Laats <[email protected]>

Author: bc-universe

core/sys/linux/bits.odin

@@ -2226,3 +2226,46 @@ IO_Uring_Submission_Queue_Flags_Bits :: enum {
 	CQ_OVERFLOW,
 	TASKRUN,
 }
+
+Mount_Flags_Bits :: enum {
+	RDONLY      = log2(1),
+	NOSUID      = log2(2),
+	NODEV       = log2(4),
+	NOEXEC      = log2(8),
+	SYNCHRONOUS = log2(16),
+	REMOUNT     = log2(32),
+	MANDLOCK    = log2(64),
+	DIRSYNC     = log2(128),
+	NOATIME     = log2(1024),
+	NODIRATIME  = log2(2048),
+	BIND        = log2(4096),
+	MOVE        = log2(8192),
+	REC         = log2(16384),
+	SILENT      = log2(32768),
+	POSIXACL    = log2(1<<16),
+	UNBINDABLE  = log2(1<<17),
+	PRIVATE     = log2(1<<18),
+	SLAVE       = log2(1<<19),
+	SHARED      = log2(1<<20),
+	RELATIME    = log2(1<<21),
+	KERNMOUNT   = log2(1<<22),
+	I_VERSION   = log2(1<<23),
+	STRICTATIME = log2(1<<24),
+	LAZYTIME    = log2(1<<25),
+	ACTIVE      = log2(1<<30),
+	NOUSER      = log2(1<<31),
+	NOSYMFOLLOW = log2(256),
+}
+
+Umount2_Flags_Bits :: enum {
+	MNT_FORCE       = log2(0x00000001),
+	MNT_DETACH      = log2(0x00000002),
+	MNT_EXPIRE      = log2(0x00000004),
+	UMOUNT_NOFOLLOW = log2(0x00000008),
+	UMOUNT_UNUSED   = log2(0x80000000),
+}
+
+Swap_Flags_Bits :: enum {
+	PREFER  = log2(0x8000),
+	DISCARD = log2(0x10000),
+}

core/sys/linux/constants.odin

@@ -54,6 +54,8 @@ PRIO_MIN :: -20
 SIGRTMIN :: Signal(32)
 SIGRTMAX :: Signal(64)
 
+_NSIG :: 65
+
 S_IFMT   :: Mode{.IFREG, .IFDIR, .IFCHR, .IFIFO}
 S_IFSOCK :: Mode{.IFREG, .IFDIR}
 S_IFLNK  :: Mode{.IFREG, .IFCHR}
@@ -405,3 +407,6 @@ IORING_OFF_SQES       :: 0x10000000
 IORING_OFF_PBUF_RING  :: 0x80000000
 IORING_OFF_PBUF_SHIFT :: 16
 IORING_OFF_MMAP_MASK  :: 0xf8000000
+
+SWAP_FLAG_PRIO_SHIFT :: u32(0)
+SWAP_FLAG_PRIO_MASK  :: u32(0x7fff)