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-rw-r--r--src/sys/include/compat/unix/syscall.h9
-rw-r--r--src/sys/include/os/filedesc.h24
-rw-r--r--src/sys/include/os/ucred.h61
-rw-r--r--src/sys/include/os/vnode.h5
-rw-r--r--src/sys/include/sys/mman.h5
-rw-r--r--src/sys/include/sys/proc.h2
-rw-r--r--src/sys/include/sys/socket.h83
-rw-r--r--src/sys/include/sys/syscall.h4
-rw-r--r--src/sys/include/sys/types.h1
-rw-r--r--src/sys/include/sys/ucred.h48
-rw-r--r--src/sys/include/vm/map.h6
11 files changed, 245 insertions, 3 deletions
diff --git a/src/sys/include/compat/unix/syscall.h b/src/sys/include/compat/unix/syscall.h
index 42dc4c0..5df3c51 100644
--- a/src/sys/include/compat/unix/syscall.h
+++ b/src/sys/include/compat/unix/syscall.h
@@ -31,12 +31,15 @@
#define _UNIX_SYSCALL_H_ 1
#include <sys/proc.h>
+#include <sys/socket.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/syscall.h>
+#include <os/ucred.h>
#include <os/iotap.h>
#include <os/reboot.h>
#include <dms/dms.h>
+#include <vm/map.h>
/*
* Exit the current process - exit(2) syscall
@@ -95,7 +98,11 @@ scret_t(*g_unix_sctab[])(struct syscall_args *) = {
[SYS_dmsio] = sys_dmsio,
[SYS_read] = sys_read,
[SYS_close] = sys_close,
- [SYS_lseek] = sys_lseek
+ [SYS_lseek] = sys_lseek,
+ [SYS_socket] = sys_socket,
+ [SYS_listen] = sys_listen,
+ [SYS_seteuid] = sys_seteuid,
+ [SYS_mmap] = sys_mmap
};
#endif /* !_NEED_UNIX_SCTAB */
diff --git a/src/sys/include/os/filedesc.h b/src/sys/include/os/filedesc.h
index b773de9..95400ed 100644
--- a/src/sys/include/os/filedesc.h
+++ b/src/sys/include/os/filedesc.h
@@ -52,6 +52,18 @@ struct filedesc {
};
/*
+ * Allocate a file descriptor from a specific process's
+ * file descriptor table
+ *
+ * @procp: Process to allocate fd from
+ * @fd_res: Result pointer is written here
+ *
+ * Returns zero on success, otherwise a less than
+ * zero value upon failure
+ */
+int fd_alloc(struct proc *procp, struct filedesc **fd_res);
+
+/*
* Duplicate a file descriptor
*
* @procp: Process to duplicate from
@@ -63,6 +75,18 @@ struct filedesc {
struct filedesc *fd_dup(struct proc *procp, int fd);
/*
+ * Look up a file descriptor that belongs to a specific
+ * process by using its fd number
+ *
+ * @procp: Process to look up
+ * @fd: File descriptor number
+ *
+ * Returns the file descriptor pointer on success,
+ * otherwise a less than zero value on failure
+ */
+struct filedesc *fd_get(struct proc *procp, int fd);
+
+/*
* Initialize a process file descriptor table
* and set up standard streams
*
diff --git a/src/sys/include/os/ucred.h b/src/sys/include/os/ucred.h
new file mode 100644
index 0000000..6e3e4b4
--- /dev/null
+++ b/src/sys/include/os/ucred.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and L5 engineers
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _OS_UCRED_H_
+#define _OS_UCRED_H_ 1
+
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/ucred.h>
+#include <sys/proc.h>
+
+/*
+ * Initialize user credientials
+ *
+ * @proc: Current process
+ * @cred: credientials to initialize
+ *
+ * XXX: 'proc' being NULL drops the creds to root
+ *
+ * Returns zero on success, otherwise a less
+ * than zero value on failure.
+ */
+int ucred_init(struct proc *proc, struct ucred *cred);
+
+/*
+ * Set effective user ID
+ */
+int seteuid(uid_t euid);
+
+/*
+ * Set EUID system call
+ */
+scret_t sys_seteuid(struct syscall_args *scargs);
+
+#endif /* !_OS_UCRED_H_ */
diff --git a/src/sys/include/os/vnode.h b/src/sys/include/os/vnode.h
index 1fd164d..8cdcded 100644
--- a/src/sys/include/os/vnode.h
+++ b/src/sys/include/os/vnode.h
@@ -44,12 +44,14 @@ struct vop;
* @VTYPE_NONE: Vnode is yet to be assigned a type
* @VTYPE_FILE: Vnode references a file
* @VTYPE_DIR: Vnode references a directory
+ * @VTYPE_SOCK: Vnode references a socket
* @__N_VTYPE: Number of valid nodes on the system
*/
typedef enum {
VTYPE_NONE,
VTYPE_FILE,
VTYPE_DIR,
+ VTYPE_SOCK,
__N_VTYPE
} vtype_t;
@@ -206,11 +208,12 @@ int vop_reclaim(struct vnode *vp, int flags);
*
* @vp: Vnode of parent directory
* @ndp: Namei descriptor of path component
+ * @type: Vnode type to create with
*
* Returns zero on success, otherwise a less than zero
* value on failure.
*/
-int vop_create(struct vnode *vp, struct nameidata *ndp);
+int vop_create(struct vnode *vp, struct nameidata *ndp, vtype_t type);
/*
* Get the attributes of a file
diff --git a/src/sys/include/sys/mman.h b/src/sys/include/sys/mman.h
index 7ae1ed2..b688fdd 100644
--- a/src/sys/include/sys/mman.h
+++ b/src/sys/include/sys/mman.h
@@ -39,4 +39,9 @@
#define PROT_USER BIT(3)
#endif /* _KERNEL */
+/*
+ * Map memory pages
+ */
+void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
+
#endif /* !_SYS_MMAN_H_ */
diff --git a/src/sys/include/sys/proc.h b/src/sys/include/sys/proc.h
index a547233..b188d50 100644
--- a/src/sys/include/sys/proc.h
+++ b/src/sys/include/sys/proc.h
@@ -30,6 +30,7 @@
#ifndef _SYS_PROC_H_
#define _SYS_PROC_H_
+#include <sys/ucred.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <sys/cdefs.h>
@@ -91,6 +92,7 @@ struct proc {
struct penv_blk *envblk;
struct ptrbox *envblk_box;
struct proc *parent;
+ struct ucred cred;
mac_level_t level;
struct spinlock maplist_lock;
sigtab_t sigtab;
diff --git a/src/sys/include/sys/socket.h b/src/sys/include/sys/socket.h
new file mode 100644
index 0000000..0ca041f
--- /dev/null
+++ b/src/sys/include/sys/socket.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and L5 engineers
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_SOCKET_H_
+#define _SYS_SOCKET_H_ 1
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+/* Address family defines */
+#define AF_UNIX 0x00 /* Local comms / IPC */
+#define AF_LOCAL AF_UNIX /* AF_UNIX alias */
+
+/* Socket type defines */
+#define SOCK_STREAM 0x00
+#define SOCK_DGRAM 0x01
+
+/*
+ * Get a socket as a file descriptor
+ *
+ * @domain: Socket domain (AF_*)
+ * @type: Socket type SOCK_*
+ *
+ * Returns file descriptor on success, otherwise
+ * a less than zero value on failure
+ */
+int socket(int domain, int type, int protocol);
+
+/*
+ * @socket: Socket to listen on
+ * @backlog: Max connections
+ */
+int listen(int socket, int backlog);
+
+#if defined(_KERNEL)
+
+/*
+ * Kernel representation of a socket
+ *
+ * @backlog: Maximum connections (< 0 means socket not active)
+ */
+struct ksocket {
+ int backlog;
+};
+
+/*
+ * Socket syscall
+ */
+scret_t sys_socket(struct syscall_args *scargs);
+
+/*
+ * Listen syscall
+ */
+scret_t sys_listen(struct syscall_args *scargs);
+
+#endif /* _KERNEL */
+#endif /* !_SYS_SOCKET_H_ */
diff --git a/src/sys/include/sys/syscall.h b/src/sys/include/sys/syscall.h
index c97d5ea..ee6ef48 100644
--- a/src/sys/include/sys/syscall.h
+++ b/src/sys/include/sys/syscall.h
@@ -59,6 +59,10 @@
#define SYS_read 0x0E /* read a file descriptor */
#define SYS_close 0x0F /* close a file */
#define SYS_lseek 0x10 /* seek to end of file */
+#define SYS_socket 0x11 /* get a socket fd */
+#define SYS_listen 0x12 /* listen on a socket */
+#define SYS_seteuid 0x13 /* set effective UID */
+#define SYS_mmap 0x14 /* map a virtual address */
typedef __ssize_t scret_t;
typedef __ssize_t scarg_t;
diff --git a/src/sys/include/sys/types.h b/src/sys/include/sys/types.h
index b1d5994..745eed7 100644
--- a/src/sys/include/sys/types.h
+++ b/src/sys/include/sys/types.h
@@ -96,7 +96,6 @@ typedef __size_t uintptr_t;
typedef __size_t off_t;
typedef int pid_t;
typedef int dev_t;
-typedef __uint32_t uid_t;
typedef __uint32_t mode_t;
typedef __uint32_t ino_t;
typedef __uint32_t nlink_t;
diff --git a/src/sys/include/sys/ucred.h b/src/sys/include/sys/ucred.h
new file mode 100644
index 0000000..ab44b6c
--- /dev/null
+++ b/src/sys/include/sys/ucred.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and L5 engineers
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_UCRED_H_
+#define _SYS_UCRED_H_ 1
+
+#include <sys/types.h>
+
+/*
+ * Represents current user credientials
+ *
+ * @euid: Effective user ID
+ * @ruid: Real user ID
+ * @suid: Saved UID
+ */
+struct ucred {
+ uid_t euid;
+ uid_t ruid;
+ uid_t suid;
+};
+
+#endif /* !_SYS_UCRED_H_ */
diff --git a/src/sys/include/vm/map.h b/src/sys/include/vm/map.h
index 69d7d73..8183b62 100644
--- a/src/sys/include/vm/map.h
+++ b/src/sys/include/vm/map.h
@@ -31,6 +31,7 @@
#define _VM_MAP_H_ 1
#include <sys/types.h>
+#include <sys/syscall.h>
#include <sys/mman.h>
#include <machine/vas.h> /* standard */
#include <vm/mmu.h>
@@ -52,4 +53,9 @@
*/
int vm_map(struct vm_vas *vas, struct mmu_map *spec, size_t len, int prot);
+/*
+ * POSIX mmap syscall
+ */
+scret_t sys_mmap(struct syscall_args *scargs);
+
#endif /* !_VM_MAP_H_ */
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-20 08:02:58 +0000