feat: userspace overhaul, Intel GPU driver, and more

programs/man/syscalls.2

@@ -3,7 +3,7 @@
     syscalls - overview of ZenithOS system calls
 
 .SH DESCRIPTION
-    ZenithOS provides 41 system calls (numbers 0-40) for userspace
+    ZenithOS provides 46 system calls (numbers 0-45) for userspace
     programs. Syscalls use the x86-64 SYSCALL instruction with the
     following register convention:
 
@@ -121,13 +121,22 @@
         int32_t zenith::ping(uint32_t ip, uint32_t timeoutMs);
 
 .B SYS_GETNETCFG (37)
-    Get the current network configuration (IP, mask, gateway, MAC).
+    Get the current network configuration (IP, mask, gateway, MAC,
+    DNS server).
         void zenith::get_netcfg(Zenith::NetCfg* out);
 
 .B SYS_SETNETCFG (38)
-    Set the network configuration (IP, mask, gateway).
+    Set the network configuration (IP, mask, gateway, DNS server).
         int zenith::set_netcfg(const Zenith::NetCfg* cfg);
 
+.B SYS_RESOLVE (44)
+    Resolve a hostname to an IPv4 address via DNS. Sends a UDP
+    query to the configured DNS server and waits up to 5 seconds
+    for a reply. Returns the IP in network byte order, or 0 on
+    failure. IP address strings (e.g. "10.0.0.1") are detected
+    and returned directly without a DNS query.
+        uint32_t zenith::resolve(const char* hostname);
+
 .SH SOCKETS
 .B SYS_SOCKET (29)
     Create a socket. type=SOCK_TCP (1) or SOCK_UDP (2).
@@ -174,6 +183,17 @@
         int zenith::recvfrom(int fd, void* buf, uint32_t maxLen,
                              uint32_t* srcIp, uint16_t* srcPort);
 
+.SH FILE WRITE
+.B SYS_FWRITE (41)
+    Write bytes to a file at a given offset.
+        int zenith::fwrite(int handle, const uint8_t* buf,
+                           uint64_t offset, uint64_t size);
+
+.B SYS_FCREATE (42)
+    Create a new file on the ramdisk. Returns a handle or negative
+    on error.
+        int zenith::fcreate(const char* path);
+
 .SH FRAMEBUFFER
 .B SYS_FBINFO (21)
     Get framebuffer dimensions and format.
@@ -188,11 +208,25 @@
     Get terminal dimensions (columns and rows).
         void zenith::termsize(int* cols, int* rows);
 
+.B SYS_TERMSCALE (43)
+    Get or set the terminal font scale factor. When scale_x is 0,
+    returns the current scale as (scale_y << 32 | scale_x). When
+    scale_x is non-zero, sets the font scale and returns the new
+    terminal dimensions as (rows << 32 | cols).
+        void zenith::termscale(int scale_x, int scale_y);
+        void zenith::get_termscale(int* scale_x, int* scale_y);
+
 .SH ARGUMENTS
 .B SYS_GETARGS (25)
     Get the argument string passed to this process at spawn time.
         int zenith::getargs(char* buf, uint64_t maxLen);
 
+.SH RANDOM
+.B SYS_GETRANDOM (45)
+    Fill a buffer with random bytes using RDTSC-seeded entropy.
+    Returns the number of bytes written.
+        int64_t zenith::getrandom(void* buf, uint32_t len);
+
 .SH POWER MANAGEMENT
 .B SYS_RESET (26)
     Reboot the system.