Merge commit '536dea9d61a032e64bbe584a97463c6638ead009' into HEAD

Change-Id: I5c469a4b738629d99d721cad7ded02d6c35f56d5

11 files changed, 366 insertions, 82 deletions

diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index c7646902c..75ce53f0a 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -16,7 +16,6 @@ TOOLS := \
 	rm \
 	mkdir \
 	rmdir \
-	reboot \
 	getevent \
 	sendevent \
 	date \
@@ -66,7 +65,11 @@ TOOLS := \
 	runcon \
 	getsebool \
 	setsebool \
-	load_policy
+	load_policy \
+	swapon \
+	swapoff \
+	mkswap \
+	readlink
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
 TOOLS += r
diff --git a/toolbox/log.c b/toolbox/log.c
index f30e6a782..2f020a8a4 100644
--- a/toolbox/log.c
+++ b/toolbox/log.c
@@ -30,7 +30,7 @@
  */
 
 #include <stdio.h>
-#include <cutils/logd.h>
+#include <log/logd.h>
 #include <ctype.h>
 #include <sys/socket.h>
 #include <sys/types.h>
@@ -130,8 +130,8 @@ int log_main(int argc, char *argv[])
     buffer[0] = '\0';
     
     for (i = optind ; i < argc ; i++) {
-        strncat(buffer, argv[i], sizeof(buffer)-1);
-        strncat(buffer, " ", sizeof(buffer)-1);
+        strlcat(buffer, argv[i], sizeof(buffer)-1);
+        strlcat(buffer, " ", sizeof(buffer)-1);
     }
 
     if(buffer[0] == 0) {
diff --git a/toolbox/lsof.c b/toolbox/lsof.c
index 376a642e7..113c120fc 100644
--- a/toolbox/lsof.c
+++ b/toolbox/lsof.c
@@ -54,7 +54,7 @@ struct pid_info_t {
     ssize_t parent_length;
 };
 
-void print_header()
+static void print_header()
 {
     printf("%-9s %5s %10s %4s %9s %18s %9s %10s %s\n",
             "COMMAND",
@@ -68,12 +68,12 @@ void print_header()
             "NAME");
 }
 
-void print_type(char *type, struct pid_info_t* info)
+static void print_type(char *type, struct pid_info_t* info)
 {
     static ssize_t link_dest_size;
     static char link_dest[PATH_MAX];
 
-    strncat(info->path, type, sizeof(info->path));
+    strlcat(info->path, type, sizeof(info->path));
     if ((link_dest_size = readlink(info->path, link_dest, sizeof(link_dest)-1)) < 0) {
         if (errno == ENOENT)
             goto out;
@@ -96,7 +96,7 @@ out:
 }
 
 // Prints out all file that have been memory mapped
-void print_maps(struct pid_info_t* info)
+static void print_maps(struct pid_info_t* info)
 {
     FILE *maps;
     char buffer[PATH_MAX + 100];
@@ -107,7 +107,7 @@ void print_maps(struct pid_info_t* info)
     long int inode;
     char file[PATH_MAX];
 
-    strncat(info->path, "maps", sizeof(info->path));
+    strlcat(info->path, "maps", sizeof(info->path));
 
     maps = fopen(info->path, "r");
     if (!maps)
@@ -131,10 +131,10 @@ out:
 }
 
 // Prints out all open file descriptors
-void print_fds(struct pid_info_t* info)
+static void print_fds(struct pid_info_t* info)
 {
     static char* fd_path = "fd/";
-    strncat(info->path, fd_path, sizeof(info->path));
+    strlcat(info->path, fd_path, sizeof(info->path));
 
     int previous_length = info->parent_length;
     info->parent_length += strlen(fd_path);
@@ -163,7 +163,7 @@ out:
     info->path[info->parent_length] = '\0';
 }
 
-void lsof_dumpinfo(pid_t pid)
+static void lsof_dumpinfo(pid_t pid)
 {
     int fd;
     struct pid_info_t info;
@@ -187,7 +187,7 @@ void lsof_dumpinfo(pid_t pid)
     }
 
     // Read the command line information; each argument is terminated with NULL.
-    strncat(info.path, "cmdline", sizeof(info.path));
+    strlcat(info.path, "cmdline", sizeof(info.path));
     fd = open(info.path, O_RDONLY);
     if (fd < 0) {
         fprintf(stderr, "Couldn't read %s\n", info.path);
diff --git a/toolbox/mkswap.c b/toolbox/mkswap.c
new file mode 100644
index 000000000..1710ef6f8
--- /dev/null
+++ b/toolbox/mkswap.c
@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <asm/page.h>
+#include <sys/swap.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+/* XXX This needs to be obtained from kernel headers. See b/9336527 */
+struct linux_swap_header {
+    char            bootbits[1024]; /* Space for disklabel etc. */
+    uint32_t        version;
+    uint32_t        last_page;
+    uint32_t        nr_badpages;
+    unsigned char   sws_uuid[16];
+    unsigned char   sws_volume[16];
+    uint32_t        padding[117];
+    uint32_t        badpages[1];
+};
+
+#define MAGIC_SWAP_HEADER     "SWAPSPACE2"
+#define MAGIC_SWAP_HEADER_LEN 10
+#define MIN_PAGES             10
+
+int mkswap_main(int argc, char **argv)
+{
+    int err = 0;
+    int fd;
+    ssize_t len;
+    off_t swap_size;
+    int pagesize;
+    struct linux_swap_header sw_hdr;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
+        return -EINVAL;
+    }
+
+    fd = open(argv[1], O_WRONLY);
+    if (fd < 0) {
+        err = errno;
+        fprintf(stderr, "Cannot open %s\n", argv[1]);
+        return err;
+    }
+
+    pagesize = getpagesize();
+    /* Determine the length of the swap file */
+    swap_size = lseek(fd, 0, SEEK_END);
+    if (swap_size < MIN_PAGES * pagesize) {
+        fprintf(stderr, "Swap file needs to be at least %dkB\n",
+            (MIN_PAGES * pagesize) >> 10);
+        err = -ENOSPC;
+        goto err;
+    }
+    if (lseek(fd, 0, SEEK_SET)) {
+        err = errno;
+        fprintf(stderr, "Can't seek to the beginning of the file\n");
+        goto err;
+    }
+
+    memset(&sw_hdr, 0, sizeof(sw_hdr));
+    sw_hdr.version = 1;
+    sw_hdr.last_page = (swap_size / pagesize) - 1;
+
+    len = write(fd, &sw_hdr, sizeof(sw_hdr));
+    if (len != sizeof(sw_hdr)) {
+        err = errno;
+        fprintf(stderr, "Failed to write swap header into %s\n", argv[1]);
+        goto err;
+    }
+
+    /* Write the magic header */
+    if (lseek(fd, pagesize - MAGIC_SWAP_HEADER_LEN, SEEK_SET) < 0) {
+        err = errno;
+        fprintf(stderr, "Failed to seek into %s\n", argv[1]);
+        goto err;
+    }
+
+    len = write(fd, MAGIC_SWAP_HEADER, MAGIC_SWAP_HEADER_LEN);
+    if (len != MAGIC_SWAP_HEADER_LEN) {
+        err = errno;
+        fprintf(stderr, "Failed to write magic swap header into %s\n", argv[1]);
+        goto err;
+    }
+
+    if (fsync(fd) < 0) {
+        err = errno;
+        fprintf(stderr, "Failed to sync %s\n", argv[1]);
+        goto err;
+    }
+err:
+    close(fd);
+    return err;
+}
diff --git a/toolbox/mount.c b/toolbox/mount.c
index bcda2a284..66ae8b115 100644
--- a/toolbox/mount.c
+++ b/toolbox/mount.c
@@ -138,6 +138,24 @@ parse_mount_options(char *arg, unsigned long rwflag, struct extra_opts *extra, i
 	return rwflag;
 }
 
+/*
+ * Mark the given block device as read-write, using the BLKROSET ioctl.
+ */
+static void fs_set_blk_rw(const char *blockdev)
+{
+    int fd;
+    int OFF = 0;
+
+    fd = open(blockdev, O_RDONLY);
+    if (fd < 0) {
+        // should never happen
+        return;
+    }
+
+    ioctl(fd, BLKROSET, &OFF);
+    close(fd);
+}
+
 static char *progname;
 
 static struct extra_opts extra;
@@ -179,6 +197,10 @@ do_mount(char *dev, char *dir, char *type, unsigned long rwflag, void *data, int
         dev = loopdev;
     }
 
+    if ((rwflag & MS_RDONLY) == 0) {
+        fs_set_blk_rw(dev);
+    }
+
 	while ((s = strsep(&type, ",")) != NULL) {
 retry:
 		if (mount(dev, dir, s, rwflag, data) == -1) {
diff --git a/toolbox/readlink.c b/toolbox/readlink.c
new file mode 100644
index 000000000..d114e2098
--- /dev/null
+++ b/toolbox/readlink.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2013, The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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.
+ *  * Neither the name of Google, Inc. 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.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static int skip_newline, quiet_errors, canonicalize;
+
+static void usage(char* name) {
+    fprintf(stderr, "Usage: %s [OPTION]... FILE\n", name);
+}
+
+int readlink_main(int argc, char* argv[]) {
+    int c;
+    while ((c = getopt(argc, argv, "nfqs")) != -1) {
+        switch (c) {
+        case 'n':
+            skip_newline = 1;
+            break;
+        case 'f':
+            canonicalize = 1;
+            break;
+        case 'q':
+        case 's':
+            quiet_errors = 1;
+            break;
+        case '?':
+        default:
+            usage(argv[0]);
+            return EXIT_FAILURE;
+        }
+    }
+    int index = optind;
+    if (argc - index != 1) {
+        usage(argv[0]);
+        return EXIT_FAILURE;
+    }
+
+    char name[PATH_MAX+1];
+    if (canonicalize) {
+        if(!realpath(argv[optind], name)) {
+            if (!quiet_errors) {
+                perror("readlink");
+            }
+            return EXIT_FAILURE;
+        }
+    } else {
+        ssize_t len = readlink(argv[1], name, PATH_MAX);
+
+        if (len < 0) {
+            if (!quiet_errors) {
+                perror("readlink");
+            }
+            return EXIT_FAILURE;
+        }
+        name[len] = '\0';
+    }
+
+    fputs(name, stdout);
+    if (!skip_newline) {
+        fputs("\n", stdout);
+    }
+
+    return EXIT_SUCCESS;
+}
diff --git a/toolbox/reboot.c b/toolbox/reboot.c
deleted file mode 100644
index f8546de2d..000000000
--- a/toolbox/reboot.c
+++ /dev/null
@@ -1,58 +0,0 @@
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <cutils/android_reboot.h>
-#include <unistd.h>
-
-int reboot_main(int argc, char *argv[])
-{
-    int ret;
-    int nosync = 0;
-    int poweroff = 0;
-    int flags = 0;
-
-    opterr = 0;
-    do {
-        int c;
-
-        c = getopt(argc, argv, "np");
-        
-        if (c == EOF) {
-            break;
-        }
-        
-        switch (c) {
-        case 'n':
-            nosync = 1;
-            break;
-        case 'p':
-            poweroff = 1;
-            break;
-        case '?':
-            fprintf(stderr, "usage: %s [-n] [-p] [rebootcommand]\n", argv[0]);
-            exit(EXIT_FAILURE);
-        }
-    } while (1);
-
-    if(argc > optind + 1) {
-        fprintf(stderr, "%s: too many arguments\n", argv[0]);
-        exit(EXIT_FAILURE);
-    }
-
-    if(nosync)
-        /* also set NO_REMOUNT_RO as remount ro includes an implicit sync */
-        flags = ANDROID_RB_FLAG_NO_SYNC | ANDROID_RB_FLAG_NO_REMOUNT_RO;
-
-    if(poweroff)
-        ret = android_reboot(ANDROID_RB_POWEROFF, flags, 0);
-    else if(argc > optind)
-        ret = android_reboot(ANDROID_RB_RESTART2, flags, argv[optind]);
-    else
-        ret = android_reboot(ANDROID_RB_RESTART, flags, 0);
-    if(ret < 0) {
-        perror("reboot");
-        exit(EXIT_FAILURE);
-    }
-    fprintf(stderr, "reboot returned\n");
-    return 0;
-}
diff --git a/toolbox/rm.c b/toolbox/rm.c
index 3a24becb6..957b5867f 100644
--- a/toolbox/rm.c
+++ b/toolbox/rm.c
@@ -45,8 +45,10 @@ static int unlink_recursive(const char* name, int flags)
             continue;
         sprintf(dn, "%s/%s", name, de->d_name);
         if (unlink_recursive(dn, flags) < 0) {
-            fail = 1;
-            break;
+            if (!(flags & OPT_FORCE)) {
+                fail = 1;
+                break;
+            }
         }
         errno = 0;
     }
@@ -71,6 +73,7 @@ int rm_main(int argc, char *argv[])
     int ret;
     int i, c;
     int flags = 0;
+    int something_failed = 0;
 
     if (argc < 2)
         return usage();
@@ -103,17 +106,21 @@ int rm_main(int argc, char *argv[])
             ret = unlink_recursive(argv[i], flags);
         } else {
             ret = unlink(argv[i]);
-            if (errno == ENOENT && (flags & OPT_FORCE)) {
-                return 0;
+            if (ret < 0 && errno == ENOENT && (flags & OPT_FORCE)) {
+                continue;
             }
         }
 
         if (ret < 0) {
             fprintf(stderr, "rm failed for %s, %s\n", argv[i], strerror(errno));
-            return -1;
+            if (!(flags & OPT_FORCE)) {
+                return -1;
+            } else {
+                something_failed = 1;
+            }
         }
     }
 
-    return 0;
+    return something_failed;
 }
 
diff --git a/toolbox/swapoff.c b/toolbox/swapoff.c
new file mode 100644
index 000000000..8f1415850
--- /dev/null
+++ b/toolbox/swapoff.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <asm/page.h>
+#include <sys/swap.h>
+
+int swapoff_main(int argc, char **argv)
+{
+    int err = 0;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
+        return -EINVAL;
+    }
+
+    err = swapoff(argv[1]);
+    if (err) {
+        fprintf(stderr, "swapoff failed for %s\n", argv[1]);
+    }
+
+    return err;
+}
diff --git a/toolbox/swapon.c b/toolbox/swapon.c
new file mode 100644
index 000000000..afa686852
--- /dev/null
+++ b/toolbox/swapon.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <asm/page.h>
+#include <sys/swap.h>
+
+/* XXX These need to be obtained from kernel headers. See b/9336527 */
+#define SWAP_FLAG_PREFER        0x8000
+#define SWAP_FLAG_PRIO_MASK     0x7fff
+#define SWAP_FLAG_PRIO_SHIFT    0
+#define SWAP_FLAG_DISCARD       0x10000
+
+void usage(char *name)
+{
+    fprintf(stderr, "Usage: %s [-p prio] <filename>\n"
+        "        prio must be between 0 and %d\n", name, SWAP_FLAG_PRIO_MASK);
+}
+
+int parse_prio(char *prio_str)
+{
+    unsigned long p = strtoul(prio_str, NULL, 10);
+
+    return (p > SWAP_FLAG_PRIO_MASK)? -1 : (int)p;
+}
+
+int swapon_main(int argc, char **argv)
+{
+    int err = 0;
+    int flags = 0;
+    int prio;
+
+    opterr = 0;
+    do {
+        int c = getopt(argc, argv, "hp:");
+        if (c == -1)
+            break;
+
+        switch (c) {
+            case 'p':
+                if (optarg != NULL)
+                    prio = parse_prio(optarg);
+                else
+                    prio = -1;
+
+                if (prio < 0) {
+                    usage(argv[0]);
+                    return -EINVAL;
+                }
+                flags |= SWAP_FLAG_PREFER;
+                flags |= (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK;
+                break;
+            case 'h':
+                usage(argv[0]);
+                return 0;
+            case '?':
+                fprintf(stderr, "unknown option: %c\n", optopt);
+                return -EINVAL;
+        }
+    } while (1);
+
+    if (optind != argc - 1) {
+        usage(argv[0]);
+        return -EINVAL;
+    }
+
+    err = swapon(argv[argc - 1], flags);
+    if (err) {
+        fprintf(stderr, "swapon failed for %s\n", argv[argc - 1]);
+    }
+
+    return err;
+}
diff --git a/toolbox/touch.c b/toolbox/touch.c
index b8ab310d0..52ddf2a55 100644
--- a/toolbox/touch.c
+++ b/toolbox/touch.c
@@ -5,13 +5,40 @@
 #include <sys/stat.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <time.h>
 
 static void usage(void)
 {
-        fprintf(stderr, "touch: usage: touch [-alm] [-t time_t] <file>\n");
+        fprintf(stderr, "touch: usage: touch [-alm] [-t YYYYMMDD[.hhmmss]] <file>\n");
         exit(1);
 }
 
+static time_t parse_time(char *s)
+{
+    struct tm tm;
+    int day = atoi(s);
+    int hour = 0;
+
+    while (*s && *s != '.') {
+        s++;
+    }
+
+    if (*s) {
+        s++;
+        hour = atoi(s);
+    }
+
+    tm.tm_year = day / 10000 - 1900;
+    tm.tm_mon = (day % 10000) / 100 - 1;
+    tm.tm_mday = day % 100;
+    tm.tm_hour = hour / 10000;
+    tm.tm_min = (hour % 10000) / 100;
+    tm.tm_sec = hour % 100;
+    tm.tm_isdst = -1;
+
+    return mktime(&tm);
+}
+
 int touch_main(int argc, char *argv[])
 {
         int i, fd, aflag = 0, mflag = 0, debug = 0, flags = 0;
@@ -31,9 +58,9 @@ int touch_main(int argc, char *argv[])
                     case 't':
                         if ((i+1) >= argc)
                             usage();
-                        specified_time.tv_sec = atol(argv[++i]);
-                        if (specified_time.tv_sec == 0) {
-                            fprintf(stderr, "touch: invalid time_t\n");
+                        specified_time.tv_sec = parse_time(argv[++i]);
+                        if (specified_time.tv_sec == -1) {
+                            fprintf(stderr, "touch: invalid timestamp specified\n");
                             exit(1);
                         }
                         specified_time.tv_nsec = 0;