staging: Remove the Android logger driver
authorJohn Stultz <john.stultz@linaro.org>
Mon, 26 Jan 2015 20:07:32 +0000 (12:07 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 28 Jan 2015 19:31:26 +0000 (11:31 -0800)
With the relase of Lollipop, Android no longer
requires the logger driver.

There are three patches which the android dev's
still need before they drop logger on all their
devices:

[PATCH v4 1/5] pstores: use scnprintf
[PATCH v2 2/5] pstore: remove superfluous memory size check
[PATCH 3/5] pstore: handle zero-sized prz in series
[PATCH v4 4/5] pstore: add pmsg
[PATCH 5/5] pstore: selinux: add security in-core xattr support for pstore and debugfs

But these seem to have been acked and are hopefully
queued for upstream.

So this patch removes the logger driver from staging.

Cc: Rom Lemarchand <romlem@google.com>,
Cc: Mark Salyzyn <salyzyn@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/android/Kconfig
drivers/staging/android/logger.c [deleted file]
drivers/staging/android/logger.h [deleted file]

index 2ac0b6147ef536c7a0158f0a8e33f751c4520339..8feb9048e62ffa45cf601b5deeb392c5be4486e3 100644 (file)
@@ -14,23 +14,6 @@ config ASHMEM
          It is, in theory, a good memory allocator for low-memory devices,
          because it can discard shared memory units when under memory pressure.
 
-config ANDROID_LOGGER
-       tristate "Android log driver"
-       default n
-       ---help---
-         This adds support for system-wide logging using four log buffers.
-
-         These are:
-
-             1: main
-             2: events
-             3: radio
-             4: system
-
-         Log reading and writing is performed via normal Linux reads and
-         optimized writes. This optimization avoids logging having too
-         much overhead in the system.
-
 config ANDROID_TIMED_OUTPUT
        bool "Timed output class driver"
        default y
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
deleted file mode 100644 (file)
index 59ea1a7..0000000
+++ /dev/null
@@ -1,807 +0,0 @@
-/*
- * drivers/misc/logger.c
- *
- * A Logging Subsystem
- *
- * Copyright (C) 2007-2008 Google, Inc.
- *
- * Robert Love <rlove@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#define pr_fmt(fmt) "logger: " fmt
-
-#include <linux/sched.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/uaccess.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/vmalloc.h>
-#include <linux/aio.h>
-#include "logger.h"
-
-#include <asm/ioctls.h>
-
-/**
- * struct logger_log - represents a specific log, such as 'main' or 'radio'
- * @buffer:    The actual ring buffer
- * @misc:      The "misc" device representing the log
- * @wq:                The wait queue for @readers
- * @readers:   This log's readers
- * @mutex:     The mutex that protects the @buffer
- * @w_off:     The current write head offset
- * @head:      The head, or location that readers start reading at.
- * @size:      The size of the log
- * @logs:      The list of log channels
- *
- * This structure lives from module insertion until module removal, so it does
- * not need additional reference counting. The structure is protected by the
- * mutex 'mutex'.
- */
-struct logger_log {
-       unsigned char           *buffer;
-       struct miscdevice       misc;
-       wait_queue_head_t       wq;
-       struct list_head        readers;
-       struct mutex            mutex;
-       size_t                  w_off;
-       size_t                  head;
-       size_t                  size;
-       struct list_head        logs;
-};
-
-static LIST_HEAD(log_list);
-
-/**
- * struct logger_reader - a logging device open for reading
- * @log:       The associated log
- * @list:      The associated entry in @logger_log's list
- * @r_off:     The current read head offset.
- * @r_all:     Reader can read all entries
- * @r_ver:     Reader ABI version
- *
- * This object lives from open to release, so we don't need additional
- * reference counting. The structure is protected by log->mutex.
- */
-struct logger_reader {
-       struct logger_log       *log;
-       struct list_head        list;
-       size_t                  r_off;
-       bool                    r_all;
-       int                     r_ver;
-};
-
-/* logger_offset - returns index 'n' into the log via (optimized) modulus */
-static size_t logger_offset(struct logger_log *log, size_t n)
-{
-       return n & (log->size - 1);
-}
-
-/*
- * file_get_log - Given a file structure, return the associated log
- *
- * This isn't aesthetic. We have several goals:
- *
- *     1) Need to quickly obtain the associated log during an I/O operation
- *     2) Readers need to maintain state (logger_reader)
- *     3) Writers need to be very fast (open() should be a near no-op)
- *
- * In the reader case, we can trivially go file->logger_reader->logger_log.
- * For a writer, we don't want to maintain a logger_reader, so we just go
- * file->logger_log. Thus what file->private_data points at depends on whether
- * or not the file was opened for reading. This function hides that dirtiness.
- */
-static inline struct logger_log *file_get_log(struct file *file)
-{
-       if (file->f_mode & FMODE_READ) {
-               struct logger_reader *reader = file->private_data;
-
-               return reader->log;
-       }
-       return file->private_data;
-}
-
-/*
- * get_entry_header - returns a pointer to the logger_entry header within
- * 'log' starting at offset 'off'. A temporary logger_entry 'scratch' must
- * be provided. Typically the return value will be a pointer within
- * 'logger->buf'.  However, a pointer to 'scratch' may be returned if
- * the log entry spans the end and beginning of the circular buffer.
- */
-static struct logger_entry *get_entry_header(struct logger_log *log,
-                                            size_t off,
-                                            struct logger_entry *scratch)
-{
-       size_t len = min(sizeof(struct logger_entry), log->size - off);
-
-       if (len != sizeof(struct logger_entry)) {
-               memcpy(((void *)scratch), log->buffer + off, len);
-               memcpy(((void *)scratch) + len, log->buffer,
-                      sizeof(struct logger_entry) - len);
-               return scratch;
-       }
-
-       return (struct logger_entry *) (log->buffer + off);
-}
-
-/*
- * get_entry_msg_len - Grabs the length of the message of the entry
- * starting from from 'off'.
- *
- * An entry length is 2 bytes (16 bits) in host endian order.
- * In the log, the length does not include the size of the log entry structure.
- * This function returns the size including the log entry structure.
- *
- * Caller needs to hold log->mutex.
- */
-static __u32 get_entry_msg_len(struct logger_log *log, size_t off)
-{
-       struct logger_entry scratch;
-       struct logger_entry *entry;
-
-       entry = get_entry_header(log, off, &scratch);
-       return entry->len;
-}
-
-static size_t get_user_hdr_len(int ver)
-{
-       if (ver < 2)
-               return sizeof(struct user_logger_entry_compat);
-       return sizeof(struct logger_entry);
-}
-
-static ssize_t copy_header_to_user(int ver, struct logger_entry *entry,
-                                  char __user *buf)
-{
-       void *hdr;
-       size_t hdr_len;
-       struct user_logger_entry_compat v1;
-
-       if (ver < 2) {
-               v1.len      = entry->len;
-               v1.__pad    = 0;
-               v1.pid      = entry->pid;
-               v1.tid      = entry->tid;
-               v1.sec      = entry->sec;
-               v1.nsec     = entry->nsec;
-               hdr         = &v1;
-               hdr_len     = sizeof(struct user_logger_entry_compat);
-       } else {
-               hdr         = entry;
-               hdr_len     = sizeof(struct logger_entry);
-       }
-
-       return copy_to_user(buf, hdr, hdr_len);
-}
-
-/*
- * do_read_log_to_user - reads exactly 'count' bytes from 'log' into the
- * user-space buffer 'buf'. Returns 'count' on success.
- *
- * Caller must hold log->mutex.
- */
-static ssize_t do_read_log_to_user(struct logger_log *log,
-                                  struct logger_reader *reader,
-                                  char __user *buf,
-                                  size_t count)
-{
-       struct logger_entry scratch;
-       struct logger_entry *entry;
-       size_t len;
-       size_t msg_start;
-
-       /*
-        * First, copy the header to userspace, using the version of
-        * the header requested
-        */
-       entry = get_entry_header(log, reader->r_off, &scratch);
-       if (copy_header_to_user(reader->r_ver, entry, buf))
-               return -EFAULT;
-
-       count -= get_user_hdr_len(reader->r_ver);
-       buf += get_user_hdr_len(reader->r_ver);
-       msg_start = logger_offset(log,
-                                 reader->r_off + sizeof(struct logger_entry));
-
-       /*
-        * We read from the msg in two disjoint operations. First, we read from
-        * the current msg head offset up to 'count' bytes or to the end of
-        * the log, whichever comes first.
-        */
-       len = min(count, log->size - msg_start);
-       if (copy_to_user(buf, log->buffer + msg_start, len))
-               return -EFAULT;
-
-       /*
-        * Second, we read any remaining bytes, starting back at the head of
-        * the log.
-        */
-       if (count != len)
-               if (copy_to_user(buf + len, log->buffer, count - len))
-                       return -EFAULT;
-
-       reader->r_off = logger_offset(log, reader->r_off +
-               sizeof(struct logger_entry) + count);
-
-       return count + get_user_hdr_len(reader->r_ver);
-}
-
-/*
- * get_next_entry_by_uid - Starting at 'off', returns an offset into
- * 'log->buffer' which contains the first entry readable by 'euid'
- */
-static size_t get_next_entry_by_uid(struct logger_log *log,
-                                   size_t off, kuid_t euid)
-{
-       while (off != log->w_off) {
-               struct logger_entry *entry;
-               struct logger_entry scratch;
-               size_t next_len;
-
-               entry = get_entry_header(log, off, &scratch);
-
-               if (uid_eq(entry->euid, euid))
-                       return off;
-
-               next_len = sizeof(struct logger_entry) + entry->len;
-               off = logger_offset(log, off + next_len);
-       }
-
-       return off;
-}
-
-/*
- * logger_read - our log's read() method
- *
- * Behavior:
- *
- *     - O_NONBLOCK works
- *     - If there are no log entries to read, blocks until log is written to
- *     - Atomically reads exactly one log entry
- *
- * Will set errno to EINVAL if read
- * buffer is insufficient to hold next entry.
- */
-static ssize_t logger_read(struct file *file, char __user *buf,
-                          size_t count, loff_t *pos)
-{
-       struct logger_reader *reader = file->private_data;
-       struct logger_log *log = reader->log;
-       ssize_t ret;
-       DEFINE_WAIT(wait);
-
-start:
-       while (1) {
-               mutex_lock(&log->mutex);
-
-               prepare_to_wait(&log->wq, &wait, TASK_INTERRUPTIBLE);
-
-               ret = (log->w_off == reader->r_off);
-               mutex_unlock(&log->mutex);
-               if (!ret)
-                       break;
-
-               if (file->f_flags & O_NONBLOCK) {
-                       ret = -EAGAIN;
-                       break;
-               }
-
-               if (signal_pending(current)) {
-                       ret = -EINTR;
-                       break;
-               }
-
-               schedule();
-       }
-
-       finish_wait(&log->wq, &wait);
-       if (ret)
-               return ret;
-
-       mutex_lock(&log->mutex);
-
-       if (!reader->r_all)
-               reader->r_off = get_next_entry_by_uid(log,
-                       reader->r_off, current_euid());
-
-       /* is there still something to read or did we race? */
-       if (unlikely(log->w_off == reader->r_off)) {
-               mutex_unlock(&log->mutex);
-               goto start;
-       }
-
-       /* get the size of the next entry */
-       ret = get_user_hdr_len(reader->r_ver) +
-               get_entry_msg_len(log, reader->r_off);
-       if (count < ret) {
-               ret = -EINVAL;
-               goto out;
-       }
-
-       /* get exactly one entry from the log */
-       ret = do_read_log_to_user(log, reader, buf, ret);
-
-out:
-       mutex_unlock(&log->mutex);
-
-       return ret;
-}
-
-/*
- * get_next_entry - return the offset of the first valid entry at least 'len'
- * bytes after 'off'.
- *
- * Caller must hold log->mutex.
- */
-static size_t get_next_entry(struct logger_log *log, size_t off, size_t len)
-{
-       size_t count = 0;
-
-       do {
-               size_t nr = sizeof(struct logger_entry) +
-                       get_entry_msg_len(log, off);
-               off = logger_offset(log, off + nr);
-               count += nr;
-       } while (count < len);
-
-       return off;
-}
-
-/*
- * is_between - is a < c < b, accounting for wrapping of a, b, and c
- *    positions in the buffer
- *
- * That is, if a<b, check for c between a and b
- * and if a>b, check for c outside (not between) a and b
- *
- * |------- a xxxxxxxx b --------|
- *               c^
- *
- * |xxxxx b --------- a xxxxxxxxx|
- *    c^
- *  or                    c^
- */
-static inline int is_between(size_t a, size_t b, size_t c)
-{
-       if (a < b) {
-               /* is c between a and b? */
-               if (a < c && c <= b)
-                       return 1;
-       } else {
-               /* is c outside of b through a? */
-               if (c <= b || a < c)
-                       return 1;
-       }
-
-       return 0;
-}
-
-/*
- * fix_up_readers - walk the list of all readers and "fix up" any who were
- * lapped by the writer; also do the same for the default "start head".
- * We do this by "pulling forward" the readers and start head to the first
- * entry after the new write head.
- *
- * The caller needs to hold log->mutex.
- */
-static void fix_up_readers(struct logger_log *log, size_t len)
-{
-       size_t old = log->w_off;
-       size_t new = logger_offset(log, old + len);
-       struct logger_reader *reader;
-
-       if (is_between(old, new, log->head))
-               log->head = get_next_entry(log, log->head, len);
-
-       list_for_each_entry(reader, &log->readers, list)
-               if (is_between(old, new, reader->r_off))
-                       reader->r_off = get_next_entry(log, reader->r_off, len);
-}
-
-/*
- * logger_write_iter - our write method, implementing support for write(),
- * writev(), and aio_write(). Writes are our fast path, and we try to optimize
- * them above all else.
- */
-static ssize_t logger_write_iter(struct kiocb *iocb, struct iov_iter *from)
-{
-       struct logger_log *log = file_get_log(iocb->ki_filp);
-       struct logger_entry header;
-       struct timespec now;
-       size_t len, count, w_off;
-
-       count = min_t(size_t, iocb->ki_nbytes, LOGGER_ENTRY_MAX_PAYLOAD);
-
-       now = current_kernel_time();
-
-       header.pid = current->tgid;
-       header.tid = current->pid;
-       header.sec = now.tv_sec;
-       header.nsec = now.tv_nsec;
-       header.euid = current_euid();
-       header.len = count;
-       header.hdr_size = sizeof(struct logger_entry);
-
-       /* null writes succeed, return zero */
-       if (unlikely(!header.len))
-               return 0;
-
-       mutex_lock(&log->mutex);
-
-       /*
-        * Fix up any readers, pulling them forward to the first readable
-        * entry after (what will be) the new write offset. We do this now
-        * because if we partially fail, we can end up with clobbered log
-        * entries that encroach on readable buffer.
-        */
-       fix_up_readers(log, sizeof(struct logger_entry) + header.len);
-
-       len = min(sizeof(header), log->size - log->w_off);
-       memcpy(log->buffer + log->w_off, &header, len);
-       memcpy(log->buffer, (char *)&header + len, sizeof(header) - len);
-
-       /* Work with a copy until we are ready to commit the whole entry */
-       w_off =  logger_offset(log, log->w_off + sizeof(struct logger_entry));
-
-       len = min(count, log->size - w_off);
-
-       if (copy_from_iter(log->buffer + w_off, len, from) != len) {
-               /*
-                * Note that by not updating log->w_off, this abandons the
-                * portion of the new entry that *was* successfully
-                * copied, just above.  This is intentional to avoid
-                * message corruption from missing fragments.
-                */
-               mutex_unlock(&log->mutex);
-               return -EFAULT;
-       }
-
-       if (copy_from_iter(log->buffer, count - len, from) != count - len) {
-               mutex_unlock(&log->mutex);
-               return -EFAULT;
-       }
-
-       log->w_off = logger_offset(log, w_off + count);
-       mutex_unlock(&log->mutex);
-
-       /* wake up any blocked readers */
-       wake_up_interruptible(&log->wq);
-
-       return len;
-}
-
-static struct logger_log *get_log_from_minor(int minor)
-{
-       struct logger_log *log;
-
-       list_for_each_entry(log, &log_list, logs)
-               if (log->misc.minor == minor)
-                       return log;
-       return NULL;
-}
-
-/*
- * logger_open - the log's open() file operation
- *
- * Note how near a no-op this is in the write-only case. Keep it that way!
- */
-static int logger_open(struct inode *inode, struct file *file)
-{
-       struct logger_log *log;
-       int ret;
-
-       ret = nonseekable_open(inode, file);
-       if (ret)
-               return ret;
-
-       log = get_log_from_minor(MINOR(inode->i_rdev));
-       if (!log)
-               return -ENODEV;
-
-       if (file->f_mode & FMODE_READ) {
-               struct logger_reader *reader;
-
-               reader = kmalloc(sizeof(struct logger_reader), GFP_KERNEL);
-               if (!reader)
-                       return -ENOMEM;
-
-               reader->log = log;
-               reader->r_ver = 1;
-               reader->r_all = in_egroup_p(inode->i_gid) ||
-                       capable(CAP_SYSLOG);
-
-               INIT_LIST_HEAD(&reader->list);
-
-               mutex_lock(&log->mutex);
-               reader->r_off = log->head;
-               list_add_tail(&reader->list, &log->readers);
-               mutex_unlock(&log->mutex);
-
-               file->private_data = reader;
-       } else {
-               file->private_data = log;
-       }
-
-       return 0;
-}
-
-/*
- * logger_release - the log's release file operation
- *
- * Note this is a total no-op in the write-only case. Keep it that way!
- */
-static int logger_release(struct inode *ignored, struct file *file)
-{
-       if (file->f_mode & FMODE_READ) {
-               struct logger_reader *reader = file->private_data;
-               struct logger_log *log = reader->log;
-
-               mutex_lock(&log->mutex);
-               list_del(&reader->list);
-               mutex_unlock(&log->mutex);
-
-               kfree(reader);
-       }
-
-       return 0;
-}
-
-/*
- * logger_poll - the log's poll file operation, for poll/select/epoll
- *
- * Note we always return POLLOUT, because you can always write() to the log.
- * Note also that, strictly speaking, a return value of POLLIN does not
- * guarantee that the log is readable without blocking, as there is a small
- * chance that the writer can lap the reader in the interim between poll()
- * returning and the read() request.
- */
-static unsigned int logger_poll(struct file *file, poll_table *wait)
-{
-       struct logger_reader *reader;
-       struct logger_log *log;
-       unsigned int ret = POLLOUT | POLLWRNORM;
-
-       if (!(file->f_mode & FMODE_READ))
-               return ret;
-
-       reader = file->private_data;
-       log = reader->log;
-
-       poll_wait(file, &log->wq, wait);
-
-       mutex_lock(&log->mutex);
-       if (!reader->r_all)
-               reader->r_off = get_next_entry_by_uid(log,
-                       reader->r_off, current_euid());
-
-       if (log->w_off != reader->r_off)
-               ret |= POLLIN | POLLRDNORM;
-       mutex_unlock(&log->mutex);
-
-       return ret;
-}
-
-static long logger_set_version(struct logger_reader *reader, void __user *arg)
-{
-       int version;
-
-       if (copy_from_user(&version, arg, sizeof(int)))
-               return -EFAULT;
-
-       if ((version < 1) || (version > 2))
-               return -EINVAL;
-
-       reader->r_ver = version;
-       return 0;
-}
-
-static long logger_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-       struct logger_log *log = file_get_log(file);
-       struct logger_reader *reader;
-       long ret = -EINVAL;
-       void __user *argp = (void __user *)arg;
-
-       mutex_lock(&log->mutex);
-
-       switch (cmd) {
-       case LOGGER_GET_LOG_BUF_SIZE:
-               ret = log->size;
-               break;
-       case LOGGER_GET_LOG_LEN:
-               if (!(file->f_mode & FMODE_READ)) {
-                       ret = -EBADF;
-                       break;
-               }
-               reader = file->private_data;
-               if (log->w_off >= reader->r_off)
-                       ret = log->w_off - reader->r_off;
-               else
-                       ret = (log->size - reader->r_off) + log->w_off;
-               break;
-       case LOGGER_GET_NEXT_ENTRY_LEN:
-               if (!(file->f_mode & FMODE_READ)) {
-                       ret = -EBADF;
-                       break;
-               }
-               reader = file->private_data;
-
-               if (!reader->r_all)
-                       reader->r_off = get_next_entry_by_uid(log,
-                               reader->r_off, current_euid());
-
-               if (log->w_off != reader->r_off)
-                       ret = get_user_hdr_len(reader->r_ver) +
-                               get_entry_msg_len(log, reader->r_off);
-               else
-                       ret = 0;
-               break;
-       case LOGGER_FLUSH_LOG:
-               if (!(file->f_mode & FMODE_WRITE)) {
-                       ret = -EBADF;
-                       break;
-               }
-               if (!(in_egroup_p(file_inode(file)->i_gid) ||
-                     capable(CAP_SYSLOG))) {
-                       ret = -EPERM;
-                       break;
-               }
-               list_for_each_entry(reader, &log->readers, list)
-                       reader->r_off = log->w_off;
-               log->head = log->w_off;
-               ret = 0;
-               break;
-       case LOGGER_GET_VERSION:
-               if (!(file->f_mode & FMODE_READ)) {
-                       ret = -EBADF;
-                       break;
-               }
-               reader = file->private_data;
-               ret = reader->r_ver;
-               break;
-       case LOGGER_SET_VERSION:
-               if (!(file->f_mode & FMODE_READ)) {
-                       ret = -EBADF;
-                       break;
-               }
-               reader = file->private_data;
-               ret = logger_set_version(reader, argp);
-               break;
-       }
-
-       mutex_unlock(&log->mutex);
-
-       return ret;
-}
-
-static const struct file_operations logger_fops = {
-       .owner = THIS_MODULE,
-       .read = logger_read,
-       .write_iter = logger_write_iter,
-       .poll = logger_poll,
-       .unlocked_ioctl = logger_ioctl,
-       .compat_ioctl = logger_ioctl,
-       .open = logger_open,
-       .release = logger_release,
-};
-
-/*
- * Log size must must be a power of two, and greater than
- * (LOGGER_ENTRY_MAX_PAYLOAD + sizeof(struct logger_entry)).
- */
-static int __init create_log(char *log_name, int size)
-{
-       int ret = 0;
-       struct logger_log *log;
-       unsigned char *buffer;
-
-       buffer = vmalloc(size);
-       if (buffer == NULL)
-               return -ENOMEM;
-
-       log = kzalloc(sizeof(struct logger_log), GFP_KERNEL);
-       if (log == NULL) {
-               ret = -ENOMEM;
-               goto out_free_buffer;
-       }
-       log->buffer = buffer;
-
-       log->misc.minor = MISC_DYNAMIC_MINOR;
-       log->misc.name = kstrdup(log_name, GFP_KERNEL);
-       if (log->misc.name == NULL) {
-               ret = -ENOMEM;
-               goto out_free_log;
-       }
-
-       log->misc.fops = &logger_fops;
-       log->misc.parent = NULL;
-
-       init_waitqueue_head(&log->wq);
-       INIT_LIST_HEAD(&log->readers);
-       mutex_init(&log->mutex);
-       log->w_off = 0;
-       log->head = 0;
-       log->size = size;
-
-       INIT_LIST_HEAD(&log->logs);
-       list_add_tail(&log->logs, &log_list);
-
-       /* finally, initialize the misc device for this log */
-       ret = misc_register(&log->misc);
-       if (unlikely(ret)) {
-               pr_err("failed to register misc device for log '%s'!\n",
-                      log->misc.name);
-               goto out_free_misc_name;
-       }
-
-       pr_info("created %luK log '%s'\n",
-               (unsigned long)log->size >> 10, log->misc.name);
-
-       return 0;
-
-out_free_misc_name:
-       kfree(log->misc.name);
-
-out_free_log:
-       kfree(log);
-
-out_free_buffer:
-       vfree(buffer);
-       return ret;
-}
-
-static int __init logger_init(void)
-{
-       int ret;
-
-       ret = create_log(LOGGER_LOG_MAIN, 256*1024);
-       if (unlikely(ret))
-               goto out;
-
-       ret = create_log(LOGGER_LOG_EVENTS, 256*1024);
-       if (unlikely(ret))
-               goto out;
-
-       ret = create_log(LOGGER_LOG_RADIO, 256*1024);
-       if (unlikely(ret))
-               goto out;
-
-       ret = create_log(LOGGER_LOG_SYSTEM, 256*1024);
-       if (unlikely(ret))
-               goto out;
-
-out:
-       return ret;
-}
-
-static void __exit logger_exit(void)
-{
-       struct logger_log *current_log, *next_log;
-
-       list_for_each_entry_safe(current_log, next_log, &log_list, logs) {
-               /* we have to delete all the entry inside log_list */
-               misc_deregister(&current_log->misc);
-               vfree(current_log->buffer);
-               kfree(current_log->misc.name);
-               list_del(&current_log->logs);
-               kfree(current_log);
-       }
-}
-
-device_initcall(logger_init);
-module_exit(logger_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Robert Love, <rlove@google.com>");
-MODULE_DESCRIPTION("Android Logger");
diff --git a/drivers/staging/android/logger.h b/drivers/staging/android/logger.h
deleted file mode 100644 (file)
index 70af7d8..0000000
+++ /dev/null
@@ -1,89 +0,0 @@
-/* include/linux/logger.h
- *
- * Copyright (C) 2007-2008 Google, Inc.
- * Author: Robert Love <rlove@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _LINUX_LOGGER_H
-#define _LINUX_LOGGER_H
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-
-/**
- * struct user_logger_entry_compat - defines a single entry that is given to a logger
- * @len:       The length of the payload
- * @__pad:     Two bytes of padding that appear to be required
- * @pid:       The generating process' process ID
- * @tid:       The generating process' thread ID
- * @sec:       The number of seconds that have elapsed since the Epoch
- * @nsec:      The number of nanoseconds that have elapsed since @sec
- * @msg:       The message that is to be logged
- *
- * The userspace structure for version 1 of the logger_entry ABI.
- * This structure is returned to userspace unless the caller requests
- * an upgrade to a newer ABI version.
- */
-struct user_logger_entry_compat {
-       __u16           len;
-       __u16           __pad;
-       __s32           pid;
-       __s32           tid;
-       __s32           sec;
-       __s32           nsec;
-       char            msg[0];
-};
-
-/**
- * struct logger_entry - defines a single entry that is given to a logger
- * @len:       The length of the payload
- * @hdr_size:  sizeof(struct logger_entry_v2)
- * @pid:       The generating process' process ID
- * @tid:       The generating process' thread ID
- * @sec:       The number of seconds that have elapsed since the Epoch
- * @nsec:      The number of nanoseconds that have elapsed since @sec
- * @euid:      Effective UID of logger
- * @msg:       The message that is to be logged
- *
- * The structure for version 2 of the logger_entry ABI.
- * This structure is returned to userspace if ioctl(LOGGER_SET_VERSION)
- * is called with version >= 2
- */
-struct logger_entry {
-       __u16           len;
-       __u16           hdr_size;
-       __s32           pid;
-       __s32           tid;
-       __s32           sec;
-       __s32           nsec;
-       kuid_t          euid;
-       char            msg[0];
-};
-
-#define LOGGER_LOG_RADIO       "log_radio"     /* radio-related messages */
-#define LOGGER_LOG_EVENTS      "log_events"    /* system/hardware events */
-#define LOGGER_LOG_SYSTEM      "log_system"    /* system/framework messages */
-#define LOGGER_LOG_MAIN                "log_main"      /* everything else */
-
-#define LOGGER_ENTRY_MAX_PAYLOAD       4076
-
-#define __LOGGERIO     0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE                _IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN             _IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN      _IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG               _IO(__LOGGERIO, 4) /* flush log */
-#define LOGGER_GET_VERSION             _IO(__LOGGERIO, 5) /* abi version */
-#define LOGGER_SET_VERSION             _IO(__LOGGERIO, 6) /* abi version */
-
-#endif /* _LINUX_LOGGER_H */