Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

5 files changed, 191 insertions, 0 deletions

diff --git a/system_cmds/dynamic_pager.tproj/com.apple.dynamic_pager.plist b/system_cmds/dynamic_pager.tproj/com.apple.dynamic_pager.plist
new file mode 100644
index 0000000..4214037
--- /dev/null
+++ b/system_cmds/dynamic_pager.tproj/com.apple.dynamic_pager.plist
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>EnableTransactions</key>
+	<true/>
+	<key>Label</key>
+	<string>com.apple.dynamic_pager</string>
+	<key>KeepAlive</key>
+	<dict>
+		<key>SuccessfulExit</key>
+		<false/>
+	</dict>
+	<key>POSIXSpawnType</key>
+	<string>Interactive</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>/sbin/dynamic_pager</string>
+	</array>
+</dict>
+</plist>
diff --git a/system_cmds/dynamic_pager.tproj/dynamic_pager.8 b/system_cmds/dynamic_pager.tproj/dynamic_pager.8
new file mode 100644
index 0000000..7d5bfc2
--- /dev/null
+++ b/system_cmds/dynamic_pager.tproj/dynamic_pager.8
@@ -0,0 +1,32 @@
+.\" Copyright (c) 2003 Apple Computer, Inc.  All rights reserved.
+.\"
+.Dd July 8, 2003
+.Dt dynamic_pager 8
+.Os "Mac OS X"
+.Sh NAME
+.Nm dynamic_pager
+.Nd swap configuration daemon
+.Sh SYNOPSIS
+.Nm dynamic_pager
+.Op Fl F Ar filename
+.Sh DESCRIPTION
+The
+.Nm dynamic_pager
+daemon can be used to specify a base name for swapfile names using the "-F" command line option or by modifying the configuration plist file.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.\" ==========
+.It Fl F
+The base name of the
+.Ar filename
+to use for the swapfiles.  By default this is
+.Pa /private/var/vm/swapfile .
+.\" ==========
+.Sh FILES
+.Bl -tag -width /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist -compact
+.It Pa /private/var/vm/swapfile*
+Swapfiles.
+
+.It Pa /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist
+Configuration file.
+.El
diff --git a/system_cmds/dynamic_pager.tproj/dynamic_pager.c b/system_cmds/dynamic_pager.tproj/dynamic_pager.c
new file mode 100644
index 0000000..deb9379
--- /dev/null
+++ b/system_cmds/dynamic_pager.tproj/dynamic_pager.c
@@ -0,0 +1,114 @@
+#define mig_external
+
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h> 
+#include <dirent.h>
+
+/*
+ * We don't exit with a non-zero status anywhere here for 2 reasons:
+ * - the kernel can continue to create swapfiles in "/private/var/vm/swapfile<index>"
+ * - we want this job to run only once at boot and exit regardless of whether:
+ *	-- it could clean up the swap directory
+ *	-- it could set the prefix for the swapfile name.
+ */
+
+static void
+clean_swap_directory(const char *path)
+{
+	DIR *dir;
+	struct dirent *entry;
+	char buf[1024];
+
+	dir = opendir(path);
+	if (dir == NULL) {
+		fprintf(stderr,"dynamic_pager: cannot open swap directory %s\n", path);
+		exit(0);
+	}
+
+	while ((entry = readdir(dir)) != NULL) {
+		if (entry->d_namlen>= 4 && strncmp(entry->d_name, "swap", 4) == 0) {
+			snprintf(buf, sizeof buf, "%s/%s", path, entry->d_name);
+			unlink(buf);
+		}
+	}
+
+	closedir(dir);
+}
+
+int
+main(int argc, char **argv)
+{
+	int ch;
+	static char tmp[1024];
+	struct statfs sfs;
+	char *q;
+	char fileroot[512];
+
+	seteuid(getuid());
+	fileroot[0] = '\0';
+
+	while ((ch = getopt(argc, argv, "F:")) != EOF) {
+		switch((char)ch) {
+
+		case 'F':
+			strncpy(fileroot, optarg, 500);
+			break;
+
+		default:
+			(void)fprintf(stderr,
+			    "usage: dynamic_pager [-F filename]\n");
+			exit(0);
+		}
+	}
+
+	/*
+	 * set vm.swapfileprefix if a fileroot was passed from the command
+	 * line, otherwise get the value from the kernel
+	 */
+	if (fileroot[0] != '\0') {
+		if (sysctlbyname("vm.swapfileprefix", NULL, 0, fileroot, sizeof(fileroot)) == -1) {
+			perror("Failed to set swapfile name prefix");
+		}
+	} else {
+		size_t fileroot_len = sizeof(fileroot);
+		if (sysctlbyname("vm.swapfileprefix", fileroot, &fileroot_len, NULL, 0) == -1) {
+			perror("Failed to get swapfile name prefix");
+			/*
+			 * can't continue without a fileroot
+			 */
+			return (0);
+		}
+	}
+
+	/*
+	 * get rid of the filename at the end of the swap file specification
+	 * we only want the portion of the pathname that should already exist
+	 */
+	strcpy(tmp, fileroot);
+	if ((q = strrchr(tmp, '/')))
+	        *q = 0;
+
+	/*
+	 * Remove all files in the swap directory.
+	 */
+	clean_swap_directory(tmp);
+
+	if (statfs(tmp, &sfs) == -1) {
+		/*
+		 * Setup the swap directory.
+		 */
+
+		if (mkdir(tmp, 0755) == -1) {
+			(void)fprintf(stderr, "dynamic_pager: cannot create swap directory %s\n", tmp);
+		}
+	}
+
+	chown(tmp, 0, 0);
+
+	return (0);
+}
diff --git a/system_cmds/dynamic_pager.tproj/entitlements.plist b/system_cmds/dynamic_pager.tproj/entitlements.plist
new file mode 100644
index 0000000..2e0c44d
--- /dev/null
+++ b/system_cmds/dynamic_pager.tproj/entitlements.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.rootless.volume.VM</key>
+	<true/>
+</dict>
+</plist>
diff --git a/system_cmds/dynamic_pager.tproj/generate_plist.sh b/system_cmds/dynamic_pager.tproj/generate_plist.sh
new file mode 100644
index 0000000..290a550
--- /dev/null
+++ b/system_cmds/dynamic_pager.tproj/generate_plist.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+set -e
+set -x
+
+cp "${SCRIPT_INPUT_FILE_0}" "${SCRIPT_OUTPUT_FILE_0}"
+case "$PLATFORM_NAME" in
+iphone*|appletv*|watch*|bridge*)
+    /usr/libexec/PlistBuddy -c "Add :LaunchOnlyOnce bool true" "${SCRIPT_OUTPUT_FILE_0}"
+    ;;
+macosx)
+    ;;
+*)
+    echo "Unsupported platform: $PLATFORM_NAME"
+    exit 1
+    ;;
+esac