feat(kernel/syscalls): implement uname syscall

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Drivers/include/syscalls.h

@@ -624,6 +624,14 @@ typedef struct FramebufferScreenInfo
  */
 #define FBIOGET_SCREEN_INFO 0xf0
 
+struct kutsname
+{
+	char sysname[65];
+	char release[65];
+	char version[65];
+	char machine[65];
+};
+
 /**
  * @brief List of syscalls
  *
@@ -1601,6 +1609,22 @@ typedef enum
 	 * - #EACCES if permission is denied
 	 */
 	SYS_RENAME,
+	/**
+	 * @brief Get unix name information
+	 *
+	 * @code
+	 * int uname(struct kutsname *buf);
+	 * @endcode
+	 *
+	 * @details Retrieves information about the operating system.
+	 *
+	 * @param buf Pointer to `kutsname` structure to store information
+	 *
+	 * @return
+	 * - #EOK on success
+	 * - #EFAULT if `buf` is outside accessible address space
+	 */
+	SYS_UNAME,
 
 	/**
 	 * @brief Max number of syscalls
@@ -1782,4 +1806,7 @@ typedef enum
 /** @copydoc SYS_RENAME */
 #define call_rename(oldpath, newpath) syscall2(SYS_RENAME, (scarg)oldpath, (scarg)newpath)
 
+/** @copydoc SYS_UNAME */
+#define call_uname(buf) syscall1(SYS_UNAME, (scarg)buf)
+
 #endif // !__FENNIX_API_SYSCALLS_LIST_H__

Kernel/.vscode/preinclude.h

@@ -9,6 +9,6 @@
 #define __kernel__ 1
 #define KERNEL_NAME "Fennix"
 #define KERNEL_ARCH "amd64"
-#define KERNEL_VERSION "1.0"
+#define KERNEL_VERSION "1.0.0"
 #define GIT_COMMIT "0000000000000000000000000000000000000000"
 #define GIT_COMMIT_SHORT "0000000"

Kernel/include/interface/syscalls.h

@@ -624,6 +624,14 @@ typedef struct FramebufferScreenInfo
  */
 #define FBIOGET_SCREEN_INFO 0xf0
 
+struct kutsname
+{
+	char sysname[65];
+	char release[65];
+	char version[65];
+	char machine[65];
+};
+
 /**
  * @brief List of syscalls
  *
@@ -1601,6 +1609,22 @@ typedef enum
 	 * - #EACCES if permission is denied
 	 */
 	SYS_RENAME,
+	/**
+	 * @brief Get unix name information
+	 *
+	 * @code
+	 * int uname(struct kutsname *buf);
+	 * @endcode
+	 *
+	 * @details Retrieves information about the operating system.
+	 *
+	 * @param buf Pointer to `kutsname` structure to store information
+	 *
+	 * @return
+	 * - #EOK on success
+	 * - #EFAULT if `buf` is outside accessible address space
+	 */
+	SYS_UNAME,
 
 	/**
 	 * @brief Max number of syscalls
@@ -1782,4 +1806,7 @@ typedef enum
 /** @copydoc SYS_RENAME */
 #define call_rename(oldpath, newpath) syscall2(SYS_RENAME, (scarg)oldpath, (scarg)newpath)
 
+/** @copydoc SYS_UNAME */
+#define call_uname(buf) syscall1(SYS_UNAME, (scarg)buf)
+
 #endif // !__FENNIX_API_SYSCALLS_LIST_H__

Kernel/syscalls/native.cpp

@@ -212,6 +212,54 @@ static int sys_rmdir(SysFrm *Frame, const char *path) { return -ENOSYS; }
 static int sys_unlink(SysFrm *Frame, const char *pathname) { return -ENOSYS; }
 static int sys_rename(SysFrm *Frame, const char *oldpath, const char *newpath) { return -ENOSYS; }
 
+static int sys_uname(SysFrm *Frame, struct kutsname *buf)
+{
+	PCB *pcb = thisProcess;
+	Memory::VirtualMemoryArea *vma = pcb->vma;
+
+	struct kutsname *pBuf = vma->UserCheckAndGetAddress(buf, sizeof(struct kutsname));
+	if (pBuf == nullptr)
+		return -EFAULT;
+
+	strncpy(pBuf->sysname, KERNEL_NAME, sizeof(pBuf->sysname));
+
+	char release[sizeof(pBuf->release)];
+	sprintf(release, "%s", KERNEL_VERSION);
+	strncpy(pBuf->release, release, sizeof(pBuf->release));
+
+	char version[sizeof(pBuf->version)];
+
+	bool isDebug = false;
+#ifdef DEBUG
+	isDebug = true;
+#endif
+
+	sprintf(version, "FNX-v%s-%s %s %s %s %s",
+			KERNEL_VERSION, GIT_COMMIT_SHORT,
+			isDebug ? "DEBUG" : "RELEASE",
+			__DATE__, __TIME__, __VERSION__);
+	strncpy(pBuf->version, version, sizeof(pBuf->version));
+
+#if defined(__amd64__)
+	const char *osarch = "x86_64";
+#elif defined(__i386__)
+	const char *osarch = "i386";
+#elif defined(__aarch64__)
+	const char *osarch = "aarch64";
+#elif defined(__arm__)
+	const char *osarch = "arm";
+#else
+	const char *osarch = "unknown";
+#endif
+
+	strncpy(pBuf->machine, osarch, sizeof(pBuf->machine));
+
+	debug("%s %s %s %s", pBuf->sysname, pBuf->release,
+		  pBuf->version, pBuf->machine);
+
+	return 0;
+}
+
 static SyscallData scTbl[SYS_MAX] = {};
 __constructor void __init_native_syscalls(void)
 {
@@ -281,6 +329,7 @@ __constructor void __init_native_syscalls(void)
 	scTbl[SYS_RMDIR] = {"SYS_RMDIR", (void *)sys_rmdir};
 	scTbl[SYS_UNLINK] = {"SYS_UNLINK", (void *)sys_unlink};
 	scTbl[SYS_RENAME] = {"SYS_RENAME", (void *)sys_rename};
+	scTbl[SYS_UNAME] = {"SYS_UNAME", (void *)sys_uname};
 }
 
 uintptr_t HandleNativeSyscalls(SysFrm *Frame)

Userspace/libc/include/fennix/syscalls.h

@@ -624,6 +624,14 @@ typedef struct FramebufferScreenInfo
  */
 #define FBIOGET_SCREEN_INFO 0xf0
 
+struct kutsname
+{
+	char sysname[65];
+	char release[65];
+	char version[65];
+	char machine[65];
+};
+
 /**
  * @brief List of syscalls
  *
@@ -1601,6 +1609,22 @@ typedef enum
 	 * - #EACCES if permission is denied
 	 */
 	SYS_RENAME,
+	/**
+	 * @brief Get unix name information
+	 *
+	 * @code
+	 * int uname(struct kutsname *buf);
+	 * @endcode
+	 *
+	 * @details Retrieves information about the operating system.
+	 *
+	 * @param buf Pointer to `kutsname` structure to store information
+	 *
+	 * @return
+	 * - #EOK on success
+	 * - #EFAULT if `buf` is outside accessible address space
+	 */
+	SYS_UNAME,
 
 	/**
 	 * @brief Max number of syscalls
@@ -1782,4 +1806,7 @@ typedef enum
 /** @copydoc SYS_RENAME */
 #define call_rename(oldpath, newpath) syscall2(SYS_RENAME, (scarg)oldpath, (scarg)newpath)
 
+/** @copydoc SYS_UNAME */
+#define call_uname(buf) syscall1(SYS_UNAME, (scarg)buf)
+
 #endif // !__FENNIX_API_SYSCALLS_LIST_H__

config.mk

@@ -17,7 +17,7 @@ OSARCH = amd64
 BOARD_TYPE := raspi4
 
 # Kernel version.
-KERNEL_VERSION = dev
+KERNEL_VERSION = 0.0.1
 
 # Which bootloader to use.
 # Available bootloaders: