From 253368a0726120efa57664cdd1d088af099a3d81 Mon Sep 17 00:00:00 2001 From: Ethan Yonker Date: Tue, 25 Nov 2014 15:00:52 -0600 Subject: Reduce libs needed for decrypt and clean up old decypt files Trim cryptfs.c to remove functions that TWRP does not use for decrypt and remove the need for libfs_mgr from cryptfs.c by passing some items to cryptfs.c from the partition manager. Add support for new fstab flags: encryptable and forceencrypt=/path/to/cryptokey For example: flags=forceencrypt=/dev/block/platform/sdhci-tegra.3/by-name/MD1 Note that "footer" is the default, so you do not need to set this flag on devices that use the footer for the crypto key. Also add mounttodecrypt if you need to mount a partition during the decrypt cycle for firmware of proprietary libs. Clean up decrypt and only support one version Android 5.0 lollipop decrypt should be backwards compatible with older versions so we will only support one version, 1.3 that came with 5.0 lollipop. Remove support for Samsung TouchWiz decrypt. It does not work with the latest versions of Samsung encryption anyway and it has not been updated to work with any AOSP decryption higher than 1.1 Change-Id: I2d9c6e31df50268c91ee642c2fa090f901d9d5c9 --- crypto/logwrapper/Android.mk | 34 -- crypto/logwrapper/NOTICE | 190 ---------- crypto/logwrapper/include/logwrap/logwrap.h | 87 ----- crypto/logwrapper/logwrap.c | 569 ---------------------------- crypto/logwrapper/logwrapper.c | 96 ----- 5 files changed, 976 deletions(-) delete mode 100644 crypto/logwrapper/Android.mk delete mode 100644 crypto/logwrapper/NOTICE delete mode 100644 crypto/logwrapper/include/logwrap/logwrap.h delete mode 100644 crypto/logwrapper/logwrap.c delete mode 100644 crypto/logwrapper/logwrapper.c (limited to 'crypto/logwrapper') diff --git a/crypto/logwrapper/Android.mk b/crypto/logwrapper/Android.mk deleted file mode 100644 index 01b61930d..000000000 --- a/crypto/logwrapper/Android.mk +++ /dev/null @@ -1,34 +0,0 @@ -LOCAL_PATH:= $(call my-dir) - -include $(CLEAR_VARS) - -# ======================================================== -# Static library -# ======================================================== -include $(CLEAR_VARS) -LOCAL_MODULE := liblogwraptwrp -LOCAL_SRC_FILES := logwrap.c -LOCAL_SHARED_LIBRARIES := libcutils liblog -LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include -LOCAL_C_INCLUDES := $(LOCAL_PATH)/include -include $(BUILD_STATIC_LIBRARY) - -# ======================================================== -# Shared library -# ======================================================== -#include $(CLEAR_VARS) -#LOCAL_MODULE := liblogwrap -#LOCAL_SHARED_LIBRARIES := libcutils liblog -#LOCAL_WHOLE_STATIC_LIBRARIES := liblogwrap -#LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include -#LOCAL_C_INCLUDES := $(LOCAL_PATH)/include -#include $(BUILD_SHARED_LIBRARY) - -# ======================================================== -# Executable -# ======================================================== -#include $(CLEAR_VARS) -#LOCAL_SRC_FILES:= logwrapper.c -#LOCAL_MODULE := logwrapper -#LOCAL_STATIC_LIBRARIES := liblog liblogwrap libcutils -#include $(BUILD_EXECUTABLE) diff --git a/crypto/logwrapper/NOTICE b/crypto/logwrapper/NOTICE deleted file mode 100644 index c5b1efa7a..000000000 --- a/crypto/logwrapper/NOTICE +++ /dev/null @@ -1,190 +0,0 @@ - - Copyright (c) 2005-2008, The Android Open Source Project - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - - - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. 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For the purposes of this definition, "submitted" - means any form of electronic, verbal, or written communication sent - to the Licensor or its representatives, including but not limited to - communication on electronic mailing lists, source code control systems, - and issue tracking systems that are managed by, or on behalf of, the - Licensor for the purpose of discussing and improving the Work, but - excluding communication that is conspicuously marked or otherwise - designated in writing by the copyright owner as "Not a Contribution." - - "Contributor" shall mean Licensor and any individual or Legal Entity - on behalf of whom a Contribution has been received by Licensor and - subsequently incorporated within the Work. - - 2. Grant of Copyright License. Subject to the terms and conditions of - this License, each Contributor hereby grants to You a perpetual, - worldwide, non-exclusive, no-charge, royalty-free, irrevocable - copyright license to reproduce, prepare Derivative Works of, - publicly display, publicly perform, sublicense, and distribute the - Work and such Derivative Works in Source or Object form. - - 3. Grant of Patent License. Subject to the terms and conditions of - this License, each Contributor hereby grants to You a perpetual, - worldwide, non-exclusive, no-charge, royalty-free, irrevocable - (except as stated in this section) patent license to make, have made, - use, offer to sell, sell, import, and otherwise transfer the Work, - where such license applies only to those patent claims licensable - by such Contributor that are necessarily infringed by their - Contribution(s) alone or by combination of their Contribution(s) - with the Work to which such Contribution(s) was submitted. If You - institute patent litigation against any entity (including a - cross-claim or counterclaim in a lawsuit) alleging that the Work - or a Contribution incorporated within the Work constitutes direct - or contributory patent infringement, then any patent licenses - granted to You under this License for that Work shall terminate - as of the date such litigation is filed. - - 4. Redistribution. You may reproduce and distribute copies of the - Work or Derivative Works thereof in any medium, with or without - modifications, and in Source or Object form, provided that You - meet the following conditions: - - (a) You must give any other recipients of the Work or - Derivative Works a copy of this License; and - - (b) You must cause any modified files to carry prominent notices - stating that You changed the files; and - - (c) You must retain, in the Source form of any Derivative Works - that You distribute, all copyright, patent, trademark, and - attribution notices from the Source form of the Work, - excluding those notices that do not pertain to any part of - the Derivative Works; and - - (d) If the Work includes a "NOTICE" text file as part of its - distribution, then any Derivative Works that You distribute must - include a readable copy of the attribution notices contained - within such NOTICE file, excluding those notices that do not - pertain to any part of the Derivative Works, in at least one - of the following places: within a NOTICE text file distributed - as part of the Derivative Works; within the Source form or - documentation, if provided along with the Derivative Works; or, - within a display generated by the Derivative Works, if and - wherever such third-party notices normally appear. The contents - of the NOTICE file are for informational purposes only and - do not modify the License. You may add Your own attribution - notices within Derivative Works that You distribute, alongside - or as an addendum to the NOTICE text from the Work, provided - that such additional attribution notices cannot be construed - as modifying the License. - - You may add Your own copyright statement to Your modifications and - may provide additional or different license terms and conditions - for use, reproduction, or distribution of Your modifications, or - for any such Derivative Works as a whole, provided Your use, - reproduction, and distribution of the Work otherwise complies with - the conditions stated in this License. - - 5. Submission of Contributions. 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In no event and under no legal theory, - whether in tort (including negligence), contract, or otherwise, - unless required by applicable law (such as deliberate and grossly - negligent acts) or agreed to in writing, shall any Contributor be - liable to You for damages, including any direct, indirect, special, - incidental, or consequential damages of any character arising as a - result of this License or out of the use or inability to use the - Work (including but not limited to damages for loss of goodwill, - work stoppage, computer failure or malfunction, or any and all - other commercial damages or losses), even if such Contributor - has been advised of the possibility of such damages. - - 9. Accepting Warranty or Additional Liability. While redistributing - the Work or Derivative Works thereof, You may choose to offer, - and charge a fee for, acceptance of support, warranty, indemnity, - or other liability obligations and/or rights consistent with this - License. However, in accepting such obligations, You may act only - on Your own behalf and on Your sole responsibility, not on behalf - of any other Contributor, and only if You agree to indemnify, - defend, and hold each Contributor harmless for any liability - incurred by, or claims asserted against, such Contributor by reason - of your accepting any such warranty or additional liability. - - END OF TERMS AND CONDITIONS - diff --git a/crypto/logwrapper/include/logwrap/logwrap.h b/crypto/logwrapper/include/logwrap/logwrap.h deleted file mode 100644 index 4307a3055..000000000 --- a/crypto/logwrapper/include/logwrap/logwrap.h +++ /dev/null @@ -1,87 +0,0 @@ -/* system/core/include/logwrap/logwrap.h - * - * Copyright 2013, The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __LIBS_LOGWRAP_H -#define __LIBS_LOGWRAP_H - -#include - -__BEGIN_DECLS - -/* - * Run a command while logging its stdout and stderr - * - * WARNING: while this function is running it will clear all SIGCHLD handlers - * if you rely on SIGCHLD in the caller there is a chance zombies will be - * created if you're not calling waitpid after calling this. This function will - * log a warning when it clears SIGCHLD for processes other than the child it - * created. - * - * Arguments: - * argc: the number of elements in argv - * argv: an array of strings containing the command to be executed and its - * arguments as separate strings. argv does not need to be - * NULL-terminated - * status: the equivalent child status as populated by wait(status). This - * value is only valid when logwrap successfully completes. If NULL - * the return value of the child will be the function's return value. - * ignore_int_quit: set to true if you want to completely ignore SIGINT and - * SIGQUIT while logwrap is running. This may force the end-user to - * send a signal twice to signal the caller (once for the child, and - * once for the caller) - * log_target: Specify where to log the output of the child, either LOG_NONE, - * LOG_ALOG (for the Android system log), LOG_KLOG (for the kernel - * log), or LOG_FILE (and you need to specify a pathname in the - * file_path argument, otherwise pass NULL). These are bit fields, - * and can be OR'ed together to log to multiple places. - * abbreviated: If true, capture up to the first 100 lines and last 4K of - * output from the child. The abbreviated output is not dumped to - * the specified log until the child has exited. - * file_path: if log_target has the LOG_FILE bit set, then this parameter - * must be set to the pathname of the file to log to. - * - * Return value: - * 0 when logwrap successfully run the child process and captured its status - * -1 when an internal error occurred - * -ECHILD if status is NULL and the child didn't exit properly - * the return value of the child if it exited properly and status is NULL - * - */ - -/* Values for the log_target parameter android_fork_execvp_ext() */ -#define LOG_NONE 0 -#define LOG_ALOG 1 -#define LOG_KLOG 2 -#define LOG_FILE 4 - -int android_fork_execvp_ext(int argc, char* argv[], int *status, bool ignore_int_quit, - int log_target, bool abbreviated, char *file_path); - -/* Similar to above, except abbreviated logging is not available, and if logwrap - * is true, logging is to the Android system log, and if false, there is no - * logging. - */ -static inline int android_fork_execvp(int argc, char* argv[], int *status, - bool ignore_int_quit, bool logwrap) -{ - return android_fork_execvp_ext(argc, argv, status, ignore_int_quit, - (logwrap ? LOG_ALOG : LOG_NONE), false, NULL); -} - -__END_DECLS - -#endif /* __LIBS_LOGWRAP_H */ diff --git a/crypto/logwrapper/logwrap.c b/crypto/logwrapper/logwrap.c deleted file mode 100644 index 4ca1db4c8..000000000 --- a/crypto/logwrapper/logwrap.c +++ /dev/null @@ -1,569 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include "private/android_filesystem_config.h" -#include "cutils/log.h" -#include - -#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x))) -#define MIN(a,b) (((a)<(b))?(a):(b)) - -static pthread_mutex_t fd_mutex = PTHREAD_MUTEX_INITIALIZER; - -#define ERROR(fmt, args...) \ -do { \ - fprintf(stderr, fmt, ## args); \ - ALOG(LOG_ERROR, "logwrapper", fmt, ## args); \ -} while(0) - -#define FATAL_CHILD(fmt, args...) \ -do { \ - ERROR(fmt, ## args); \ - _exit(-1); \ -} while(0) - -#define MAX_KLOG_TAG 16 - -/* This is a simple buffer that holds up to the first beginning_buf->buf_size - * bytes of output from a command. - */ -#define BEGINNING_BUF_SIZE 0x1000 -struct beginning_buf { - char *buf; - size_t alloc_len; - /* buf_size is the usable space, which is one less than the allocated size */ - size_t buf_size; - size_t used_len; -}; - -/* This is a circular buf that holds up to the last ending_buf->buf_size bytes - * of output from a command after the first beginning_buf->buf_size bytes - * (which are held in beginning_buf above). - */ -#define ENDING_BUF_SIZE 0x1000 -struct ending_buf { - char *buf; - ssize_t alloc_len; - /* buf_size is the usable space, which is one less than the allocated size */ - ssize_t buf_size; - ssize_t used_len; - /* read and write offsets into the circular buffer */ - int read; - int write; -}; - - /* A structure to hold all the abbreviated buf data */ -struct abbr_buf { - struct beginning_buf b_buf; - struct ending_buf e_buf; - int beginning_buf_full; -}; - -/* Collect all the various bits of info needed for logging in one place. */ -struct log_info { - int log_target; - char klog_fmt[MAX_KLOG_TAG * 2]; - char *btag; - bool abbreviated; - FILE *fp; - struct abbr_buf a_buf; -}; - -/* Forware declaration */ -static void add_line_to_abbr_buf(struct abbr_buf *a_buf, char *linebuf, int linelen); - -/* Return 0 on success, and 1 when full */ -static int add_line_to_linear_buf(struct beginning_buf *b_buf, - char *line, ssize_t line_len) -{ - size_t new_len; - char *new_buf; - int full = 0; - - if ((line_len + b_buf->used_len) > b_buf->buf_size) { - full = 1; - } else { - /* Add to the end of the buf */ - memcpy(b_buf->buf + b_buf->used_len, line, line_len); - b_buf->used_len += line_len; - } - - return full; -} - -static void add_line_to_circular_buf(struct ending_buf *e_buf, - char *line, ssize_t line_len) -{ - ssize_t free_len; - ssize_t needed_space; - char *new_buf; - int cnt; - - if (e_buf->buf == NULL) { - return; - } - - if (line_len > e_buf->buf_size) { - return; - } - - free_len = e_buf->buf_size - e_buf->used_len; - - if (line_len > free_len) { - /* remove oldest entries at read, and move read to make - * room for the new string */ - needed_space = line_len - free_len; - e_buf->read = (e_buf->read + needed_space) % e_buf->buf_size; - e_buf->used_len -= needed_space; - } - - /* Copy the line into the circular buffer, dealing with possible - * wraparound. - */ - cnt = MIN(line_len, e_buf->buf_size - e_buf->write); - memcpy(e_buf->buf + e_buf->write, line, cnt); - if (cnt < line_len) { - memcpy(e_buf->buf, line + cnt, line_len - cnt); - } - e_buf->used_len += line_len; - e_buf->write = (e_buf->write + line_len) % e_buf->buf_size; -} - -/* Log directly to the specified log */ -static void do_log_line(struct log_info *log_info, char *line) { - if (log_info->log_target & LOG_KLOG) { - klog_write(6, log_info->klog_fmt, line); - } - if (log_info->log_target & LOG_ALOG) { - ALOG(LOG_INFO, log_info->btag, "%s", line); - } - if (log_info->log_target & LOG_FILE) { - fprintf(log_info->fp, "%s\n", line); - } -} - -/* Log to either the abbreviated buf, or directly to the specified log - * via do_log_line() above. - */ -static void log_line(struct log_info *log_info, char *line, int len) { - if (log_info->abbreviated) { - add_line_to_abbr_buf(&log_info->a_buf, line, len); - } else { - do_log_line(log_info, line); - } -} - -/* - * The kernel will take a maximum of 1024 bytes in any single write to - * the kernel logging device file, so find and print each line one at - * a time. The allocated size for buf should be at least 1 byte larger - * than buf_size (the usable size of the buffer) to make sure there is - * room to temporarily stuff a null byte to terminate a line for logging. - */ -static void print_buf_lines(struct log_info *log_info, char *buf, int buf_size) -{ - char *line_start; - char c; - int line_len; - int i; - - line_start = buf; - for (i = 0; i < buf_size; i++) { - if (*(buf + i) == '\n') { - /* Found a line ending, print the line and compute new line_start */ - /* Save the next char and replace with \0 */ - c = *(buf + i + 1); - *(buf + i + 1) = '\0'; - do_log_line(log_info, line_start); - /* Restore the saved char */ - *(buf + i + 1) = c; - line_start = buf + i + 1; - } else if (*(buf + i) == '\0') { - /* The end of the buffer, print the last bit */ - do_log_line(log_info, line_start); - break; - } - } - /* If the buffer was completely full, and didn't end with a newline, just - * ignore the partial last line. - */ -} - -static void init_abbr_buf(struct abbr_buf *a_buf) { - char *new_buf; - - memset(a_buf, 0, sizeof(struct abbr_buf)); - new_buf = malloc(BEGINNING_BUF_SIZE); - if (new_buf) { - a_buf->b_buf.buf = new_buf; - a_buf->b_buf.alloc_len = BEGINNING_BUF_SIZE; - a_buf->b_buf.buf_size = BEGINNING_BUF_SIZE - 1; - } - new_buf = malloc(ENDING_BUF_SIZE); - if (new_buf) { - a_buf->e_buf.buf = new_buf; - a_buf->e_buf.alloc_len = ENDING_BUF_SIZE; - a_buf->e_buf.buf_size = ENDING_BUF_SIZE - 1; - } -} - -static void free_abbr_buf(struct abbr_buf *a_buf) { - free(a_buf->b_buf.buf); - free(a_buf->e_buf.buf); -} - -static void add_line_to_abbr_buf(struct abbr_buf *a_buf, char *linebuf, int linelen) { - if (!a_buf->beginning_buf_full) { - a_buf->beginning_buf_full = - add_line_to_linear_buf(&a_buf->b_buf, linebuf, linelen); - } - if (a_buf->beginning_buf_full) { - add_line_to_circular_buf(&a_buf->e_buf, linebuf, linelen); - } -} - -static void print_abbr_buf(struct log_info *log_info) { - struct abbr_buf *a_buf = &log_info->a_buf; - - /* Add the abbreviated output to the kernel log */ - if (a_buf->b_buf.alloc_len) { - print_buf_lines(log_info, a_buf->b_buf.buf, a_buf->b_buf.used_len); - } - - /* Print an ellipsis to indicate that the buffer has wrapped or - * is full, and some data was not logged. - */ - if (a_buf->e_buf.used_len == a_buf->e_buf.buf_size) { - do_log_line(log_info, "...\n"); - } - - if (a_buf->e_buf.used_len == 0) { - return; - } - - /* Simplest way to print the circular buffer is allocate a second buf - * of the same size, and memcpy it so it's a simple linear buffer, - * and then cal print_buf_lines on it */ - if (a_buf->e_buf.read < a_buf->e_buf.write) { - /* no wrap around, just print it */ - print_buf_lines(log_info, a_buf->e_buf.buf + a_buf->e_buf.read, - a_buf->e_buf.used_len); - } else { - /* The circular buffer will always have at least 1 byte unused, - * so by allocating alloc_len here we will have at least - * 1 byte of space available as required by print_buf_lines(). - */ - char * nbuf = malloc(a_buf->e_buf.alloc_len); - if (!nbuf) { - return; - } - int first_chunk_len = a_buf->e_buf.buf_size - a_buf->e_buf.read; - memcpy(nbuf, a_buf->e_buf.buf + a_buf->e_buf.read, first_chunk_len); - /* copy second chunk */ - memcpy(nbuf + first_chunk_len, a_buf->e_buf.buf, a_buf->e_buf.write); - print_buf_lines(log_info, nbuf, first_chunk_len + a_buf->e_buf.write); - free(nbuf); - } -} - -static int parent(const char *tag, int parent_read, pid_t pid, - int *chld_sts, int log_target, bool abbreviated, char *file_path) { - int status = 0; - char buffer[4096]; - struct pollfd poll_fds[] = { - [0] = { - .fd = parent_read, - .events = POLLIN, - }, - }; - int rc = 0; - int fd; - - struct log_info log_info; - - int a = 0; // start index of unprocessed data - int b = 0; // end index of unprocessed data - int sz; - bool found_child = false; - char tmpbuf[256]; - - log_info.btag = basename(tag); - if (!log_info.btag) { - log_info.btag = (char*) tag; - } - - if (abbreviated && (log_target == LOG_NONE)) { - abbreviated = 0; - } - if (abbreviated) { - init_abbr_buf(&log_info.a_buf); - } - - if (log_target & LOG_KLOG) { - snprintf(log_info.klog_fmt, sizeof(log_info.klog_fmt), - "<6>%.*s: %%s", MAX_KLOG_TAG, log_info.btag); - } - - if ((log_target & LOG_FILE) && !file_path) { - /* No file_path specified, clear the LOG_FILE bit */ - log_target &= ~LOG_FILE; - } - - if (log_target & LOG_FILE) { - fd = open(file_path, O_WRONLY | O_CREAT, 0664); - if (fd < 0) { - ERROR("Cannot log to file %s\n", file_path); - log_target &= ~LOG_FILE; - } else { - lseek(fd, 0, SEEK_END); - log_info.fp = fdopen(fd, "a"); - } - } - - log_info.log_target = log_target; - log_info.abbreviated = abbreviated; - - while (!found_child) { - if (TEMP_FAILURE_RETRY(poll(poll_fds, ARRAY_SIZE(poll_fds), -1)) < 0) { - ERROR("poll failed\n"); - rc = -1; - goto err_poll; - } - - if (poll_fds[0].revents & POLLIN) { - sz = read(parent_read, &buffer[b], sizeof(buffer) - 1 - b); - - sz += b; - // Log one line at a time - for (b = 0; b < sz; b++) { - if (buffer[b] == '\r') { - if (abbreviated) { - /* The abbreviated logging code uses newline as - * the line separator. Lucikly, the pty layer - * helpfully cooks the output of the command - * being run and inserts a CR before NL. So - * I just change it to NL here when doing - * abbreviated logging. - */ - buffer[b] = '\n'; - } else { - buffer[b] = '\0'; - } - } else if (buffer[b] == '\n') { - buffer[b] = '\0'; - log_line(&log_info, &buffer[a], b - a); - a = b + 1; - } - } - - if (a == 0 && b == sizeof(buffer) - 1) { - // buffer is full, flush - buffer[b] = '\0'; - log_line(&log_info, &buffer[a], b - a); - b = 0; - } else if (a != b) { - // Keep left-overs - b -= a; - memmove(buffer, &buffer[a], b); - a = 0; - } else { - a = 0; - b = 0; - } - } - - if (poll_fds[0].revents & POLLHUP) { - int ret; - - ret = waitpid(pid, &status, WNOHANG); - if (ret < 0) { - rc = errno; - ALOG(LOG_ERROR, "logwrap", "waitpid failed with %s\n", strerror(errno)); - goto err_waitpid; - } - if (ret > 0) { - found_child = true; - } - } - } - - if (chld_sts != NULL) { - *chld_sts = status; - } else { - if (WIFEXITED(status)) - rc = WEXITSTATUS(status); - else - rc = -ECHILD; - } - - // Flush remaining data - if (a != b) { - buffer[b] = '\0'; - log_line(&log_info, &buffer[a], b - a); - } - - /* All the output has been processed, time to dump the abbreviated output */ - if (abbreviated) { - print_abbr_buf(&log_info); - } - - if (WIFEXITED(status)) { - if (WEXITSTATUS(status)) { - snprintf(tmpbuf, sizeof(tmpbuf), - "%s terminated by exit(%d)\n", log_info.btag, WEXITSTATUS(status)); - do_log_line(&log_info, tmpbuf); - } - } else { - if (WIFSIGNALED(status)) { - snprintf(tmpbuf, sizeof(tmpbuf), - "%s terminated by signal %d\n", log_info.btag, WTERMSIG(status)); - do_log_line(&log_info, tmpbuf); - } else if (WIFSTOPPED(status)) { - snprintf(tmpbuf, sizeof(tmpbuf), - "%s stopped by signal %d\n", log_info.btag, WSTOPSIG(status)); - do_log_line(&log_info, tmpbuf); - } - } - -err_waitpid: -err_poll: - if (log_target & LOG_FILE) { - fclose(log_info.fp); /* Also closes underlying fd */ - } - if (abbreviated) { - free_abbr_buf(&log_info.a_buf); - } - return rc; -} - -static void child(int argc, char* argv[]) { - // create null terminated argv_child array - char* argv_child[argc + 1]; - memcpy(argv_child, argv, argc * sizeof(char *)); - argv_child[argc] = NULL; - - if (execvp(argv_child[0], argv_child)) { - FATAL_CHILD("executing %s failed: %s\n", argv_child[0], - strerror(errno)); - } -} - -int android_fork_execvp_ext(int argc, char* argv[], int *status, bool ignore_int_quit, - int log_target, bool abbreviated, char *file_path) { - pid_t pid; - int parent_ptty; - int child_ptty; - char *child_devname = NULL; - struct sigaction intact; - struct sigaction quitact; - sigset_t blockset; - sigset_t oldset; - int rc = 0; - - rc = pthread_mutex_lock(&fd_mutex); - if (rc) { - ERROR("failed to lock signal_fd mutex\n"); - goto err_lock; - } - - /* Use ptty instead of socketpair so that STDOUT is not buffered */ - parent_ptty = open("/dev/ptmx", O_RDWR); - if (parent_ptty < 0) { - ERROR("Cannot create parent ptty\n"); - rc = -1; - goto err_open; - } - - if (grantpt(parent_ptty) || unlockpt(parent_ptty) || - ((child_devname = (char*)ptsname(parent_ptty)) == 0)) { - ERROR("Problem with /dev/ptmx\n"); - rc = -1; - goto err_ptty; - } - - child_ptty = open(child_devname, O_RDWR); - if (child_ptty < 0) { - ERROR("Cannot open child_ptty\n"); - rc = -1; - goto err_child_ptty; - } - - sigemptyset(&blockset); - sigaddset(&blockset, SIGINT); - sigaddset(&blockset, SIGQUIT); - pthread_sigmask(SIG_BLOCK, &blockset, &oldset); - - pid = fork(); - if (pid < 0) { - close(child_ptty); - ERROR("Failed to fork\n"); - rc = -1; - goto err_fork; - } else if (pid == 0) { - pthread_mutex_unlock(&fd_mutex); - pthread_sigmask(SIG_SETMASK, &oldset, NULL); - close(parent_ptty); - - // redirect stdout and stderr - dup2(child_ptty, 1); - dup2(child_ptty, 2); - close(child_ptty); - - child(argc, argv); - } else { - close(child_ptty); - if (ignore_int_quit) { - struct sigaction ignact; - - memset(&ignact, 0, sizeof(ignact)); - ignact.sa_handler = SIG_IGN; - sigaction(SIGINT, &ignact, &intact); - sigaction(SIGQUIT, &ignact, &quitact); - } - - rc = parent(argv[0], parent_ptty, pid, status, log_target, - abbreviated, file_path); - } - - if (ignore_int_quit) { - sigaction(SIGINT, &intact, NULL); - sigaction(SIGQUIT, &quitact, NULL); - } -err_fork: - pthread_sigmask(SIG_SETMASK, &oldset, NULL); -err_child_ptty: -err_ptty: - close(parent_ptty); -err_open: - pthread_mutex_unlock(&fd_mutex); -err_lock: - return rc; -} diff --git a/crypto/logwrapper/logwrapper.c b/crypto/logwrapper/logwrapper.c deleted file mode 100644 index d0d8d1471..000000000 --- a/crypto/logwrapper/logwrapper.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include -#include -#include -#include - -#include -#include - -#include "cutils/log.h" - -void fatal(const char *msg) { - fprintf(stderr, "%s", msg); - ALOG(LOG_ERROR, "logwrapper", "%s", msg); - exit(-1); -} - -void usage() { - fatal( - "Usage: logwrapper [-a] [-d] [-k] BINARY [ARGS ...]\n" - "\n" - "Forks and executes BINARY ARGS, redirecting stdout and stderr to\n" - "the Android logging system. Tag is set to BINARY, priority is\n" - "always LOG_INFO.\n" - "\n" - "-a: Causes logwrapper to do abbreviated logging.\n" - " This logs up to the first 4K and last 4K of the command\n" - " being run, and logs the output when the command exits\n" - "-d: Causes logwrapper to SIGSEGV when BINARY terminates\n" - " fault address is set to the status of wait()\n" - "-k: Causes logwrapper to log to the kernel log instead of\n" - " the Android system log\n"); -} - -int main(int argc, char* argv[]) { - int seg_fault_on_exit = 0; - int log_target = LOG_ALOG; - bool abbreviated = false; - int ch; - int status = 0xAAAA; - int rc; - - while ((ch = getopt(argc, argv, "adk")) != -1) { - switch (ch) { - case 'a': - abbreviated = true; - break; - case 'd': - seg_fault_on_exit = 1; - break; - case 'k': - log_target = LOG_KLOG; - klog_set_level(6); - break; - case '?': - default: - usage(); - } - } - argc -= optind; - argv += optind; - - if (argc < 1) { - usage(); - } - - rc = android_fork_execvp_ext(argc, &argv[0], &status, true, - log_target, abbreviated, NULL); - if (!rc) { - if (WIFEXITED(status)) - rc = WEXITSTATUS(status); - else - rc = -ECHILD; - } - - if (seg_fault_on_exit) { - *(int *)status = 0; // causes SIGSEGV with fault_address = status - } - - return rc; -} -- cgit v1.2.3