sysdeps/ironclad: Miscellaneous sysdeps updates

sysdeps/ironclad/generic/mac.cpp

@@ -6,30 +6,26 @@
 extern "C" {
 
 unsigned long get_mac_capabilities(void) {
-	int ret, errn;
+	int ret;
 	SYSCALL0(SYSCALL_GET_MAC_CAPABILITIES);
-	errno = errn;
 	return ret;
 }
 
 int set_mac_capabilities(unsigned long request) {
-	int ret, errn;
+	int ret;
 	SYSCALL1(SYSCALL_SET_MAC_CAPABILITIES, request);
-	errno = errn;
 	return ret;
 }
 
 int add_mac_permissions(const char *path, int flags) {
-	int ret, errn;
+	int ret;
 	SYSCALL3(SYSCALL_ADD_MAC_PERMISSIONS, path, strlen(path), flags);
-	errno = errn;
 	return ret;
 }
 
 int set_mac_enforcement(unsigned long enforcement) {
-	int ret, errn;
+	int ret;
 	SYSCALL1(SYSCALL_SET_MAC_ENFORCEMENT, enforcement);
-	errno = errn;
 	return ret;
 }
 

sysdeps/ironclad/generic/mount.cpp

@@ -4,31 +4,17 @@
 #include <sys/syscall.h>
 #include <string.h>
 
-int mount(const char *source, const char *target,
-		const char *fstype, unsigned long flags, const void *data) {
-	int ret, errno;
+int mount(const char *source, const char *target, int type, int flags) {
+	int ret;
 	size_t source_len = strlen(source);
 	size_t target_len = strlen(target);
-	int val;
-	if (!strcmp(fstype, "ext")) {
-		val = 1;
-	} else if (!strcmp(fstype, "fat32")) {
-		val = 2;
-	} else {
-		return EINVAL;
-	}
-
-	SYSCALL6(SYSCALL_MOUNT, source, source_len, target, target_len, val, flags);
-	return errno;
-}
-
-int umount(const char *target) {
-	return umount2(target, 0);
+	SYSCALL6(SYSCALL_MOUNT, source, source_len, target, target_len, type, flags);
+	return ret;
 }
 
-int umount2(const char *target, int flags) {
-	int ret, errno;
+int umount(const char *target, int flags) {
+	int ret;
 	size_t target_len = strlen(target);
 	SYSCALL3(SYSCALL_UMOUNT, target, target_len, flags);
-	return errno;
+	return ret;
 }

sysdeps/ironclad/generic/pty.cpp

@@ -7,12 +7,35 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include <sys/syscall.h>
+#include <sys/ioctl.h>
 
 int openpty(int *mfd, int *sfd, char *name, const struct termios *ios, const struct winsize *win) {
-	int errno, ret;
+	int ret;
 	int fds[2];
-	SYSCALL3(SYSCALL_OPENPTY, fds, ios, win);
+	SYSCALL1(SYSCALL_OPENPTY, fds);
+	if (errno) {
+		return -1;
+	}
 	*mfd = fds[0];
 	*sfd = fds[1];
+
+	if (name != NULL) {
+		ret = ttyname_r(*mfd, name, (size_t)-1);
+		if (ret) {
+			return -1;
+		}
+	}
+	if (ios != NULL) {
+		ret = tcsetattr(*mfd, TCSANOW, ios);
+		if (ret) {
+			return -1;
+		}
+	}
+	if (win != NULL) {
+		ret = ioctl(*mfd, TIOCGWINSZ, win);
+		if (ret) {
+			return -1;
+		}
+	}
 	return ret;
 }

sysdeps/ironclad/generic/utmpx.cpp

@@ -0,0 +1,76 @@
+#include <bits/ensure.h>
+#include <stddef.h>
+#include <errno.h>
+#include <utmpx.h>
+#include <stdio.h>
+#include <time.h>
+#include <paths.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int utmpx_file = -1;
+
+void updwtmpx(const char *, const struct utmpx *) {
+	// Empty as musl does
+}
+
+void endutxent(void) {
+	if (utmpx_file >= 0) {
+		close(utmpx_file);
+	}
+}
+
+void setutxent(void) {
+	if (utmpx_file < 0) {
+		utmpx_file = open(UTMPX_FILE, O_RDWR | O_CREAT, 0755);
+	} else {
+		lseek(utmpx_file, 0, SEEK_SET);
+	}
+}
+
+struct utmpx returned;
+
+struct utmpx *getutxent(void) {
+	if (utmpx_file < 0) {
+		setutxent();
+		if (utmpx_file < 0) {
+			return NULL;
+		}
+	}
+
+	if (read(utmpx_file, &returned, sizeof(struct utmpx)) != sizeof(struct utmpx)) {
+		return NULL;
+	}
+
+	return &returned;
+}
+
+struct utmpx *pututxline(const struct utmpx *added) {
+	if (utmpx_file < 0) {
+		setutxent();
+		if (utmpx_file < 0) {
+			return NULL;
+		}
+	}
+
+	lseek(utmpx_file, 0, SEEK_END);
+	if (write(utmpx_file, added, sizeof(struct utmpx)) != sizeof(struct utmpx)) {
+		return NULL;
+	}
+
+	return (struct utmpx *)added;
+}
+
+int utmpxname(const char *path) {
+	if (utmpx_file > 0) {
+		close(utmpx_file);
+	}
+
+	utmpx_file = open(path, O_RDWR | O_CREAT, 0755);
+	if (utmpx_file > 0) {
+		lseek(utmpx_file, 0, SEEK_END);
+		return 1;
+	} else {
+		return 0;
+	}
+}

sysdeps/ironclad/include/sys/mount.h

@@ -5,12 +5,17 @@
 extern "C" {
 #endif
 
+#define MNT_EXT 1
+#define MNT_FAT 2
+
+#define MS_RDONLY   0b001
+#define MS_REMOUNT  0b010
+#define MS_RELATIME 0b100
+
 #define MNT_FORCE 1
 
-int mount(const char *source, const char *target,
-		const char *fstype, unsigned long flags, const void *data);
-int umount(const char *target);
-int umount2(const char *target, int flags);
+int mount(const char *source, const char *target, int type, int flags);
+int umount(const char *target, int flags);
 
 #ifdef __cplusplus
 }

sysdeps/ironclad/include/sys/syscall.h

@@ -166,5 +166,22 @@
 #define SYSCALL_ACTUALLY_KILL        79
 #define SYSCALL_SIGNALPOST           80
 #define SYSCALL_SEND_SIGNAL          81
+#define SYSCALL_GETPRIO              82
+#define SYSCALL_SETPRIO              83
+#define SYSCALL_GETGID               84
+#define SYSCALL_GETEGID              85
+#define SYSCALL_SETGIDS              86
+#define SYSCALL_GETGROUPS            87
+#define SYSCALL_SETGROUPS            88
+#define SYSCALL_TTYNAME              89
+#define SYSCALL_FADVISE              90
+#define SYSCALL_SHMAT                91
+#define SYSCALL_SHMCTL               92
+#define SYSCALL_SHMDT                93
+#define SYSCALL_SHMGET               94
+#define SYSCALL_GETSOCKOPT           95
+#define SYSCALL_SETSOCKOPT           96
+#define SYSCALL_GETTIDID             97
+#define SYSCALL_SETTIDID             98
 
 #endif // _SYS_SYSCALL_H

sysdeps/ironclad/include/utmpx.h

@@ -0,0 +1,63 @@
+
+#ifndef  _UTMPX_H
+#define  _UTMPX_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <abi-bits/pid_t.h>
+#include <bits/posix/timeval.h>
+
+#define UTMPX_FILE "/var/run/utmp"
+#define WTMPX_FILE "/var/run/wtmp"
+
+// Struct definition taken from musl
+struct utmpx {
+	short ut_type;
+	short __ut_pad1;
+	pid_t ut_pid;
+	char ut_line[32];
+	char ut_id[4];
+	char ut_user[32];
+	char ut_host[256];
+	struct {
+		short __e_termination;
+		short __e_exit;
+	} ut_exit;
+	int ut_session, __ut_pad2;
+	struct timeval ut_tv;
+	unsigned ut_addr_v6[4];
+	char __unused[20];
+};
+
+#ifndef __MLIBC_ABI_ONLY
+
+void updwtmpx(const char *, const struct utmpx *);
+int utmpxname(const char *);
+struct utmpx *pututxline(const struct utmpx *);
+struct utmpx *getutxent(void);
+void setutxent(void);
+void endutxent(void);
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#define EMPTY           0
+#define RUN_LVL         1
+#define BOOT_TIME       2
+#define NEW_TIME        3
+#define OLD_TIME        4
+#define INIT_PROCESS    5
+#define LOGIN_PROCESS   6
+#define USER_PROCESS    7
+#define DEAD_PROCESS    8
+
+#define __UT_HOSTSIZE 256
+#define __UT_NAMESIZE 32
+#define __UT_LINESIZE 32
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _UTMPX_H

sysdeps/ironclad/meson.build

@@ -14,7 +14,8 @@ libc_sources += files(
 	'generic/thread.cpp',
 	'generic/mac.cpp',
 	'generic/sched2.cpp',
-	'generic/thread.S'
+	'generic/thread.S',
+	'generic/utmpx.cpp'
 )
 
 if not no_headers
@@ -88,7 +89,8 @@ if not no_headers
 
 	install_headers(
 		'include/mntent.h',
-		'include/pty.h'
+		'include/pty.h',
+		'include/utmpx.h'
 	)
 endif