From ff4a4dc7e6e3ead12020b4dc17548d767a419dde Mon Sep 17 00:00:00 2001
From: Christopher Ferris <cferris@google.com>
Date: Mon, 9 Feb 2015 16:24:47 -0800
Subject: [PATCH] Remove -z option.

This option doesn't work with the current selinux protections and
doesn't serve much of a purpose. You can get the same results running
this:

dumpstate | gzip > /data/local/tmp/dump.txt.gz

Bug: 19271141
Change-Id: Icc76200df33dc708e30c556ec8a0f393f995fe7c
---
 cmds/dumpstate/dumpstate.c |  6 +----
 cmds/dumpstate/dumpstate.h |  4 ++--
 cmds/dumpstate/utils.c     | 47 ++++----------------------------------
 3 files changed, 8 insertions(+), 49 deletions(-)

diff --git a/cmds/dumpstate/dumpstate.c b/cmds/dumpstate/dumpstate.c
index dd8303eb8..1d33d7146 100644
--- a/cmds/dumpstate/dumpstate.c
+++ b/cmds/dumpstate/dumpstate.c
@@ -366,7 +366,6 @@ static void usage() {
     fprintf(stderr, "usage: dumpstate [-b soundfile] [-e soundfile] [-o file [-d] [-p] [-z]] [-s] [-q]\n"
             "  -o: write to file (instead of stdout)\n"
             "  -d: append date to filename (requires -o)\n"
-            "  -z: gzip output (requires -o)\n"
             "  -p: capture screenshot to filename.png (requires -o)\n"
             "  -s: write output to control socket (for init)\n"
             "  -b: play sound file instead of vibrate, at beginning of job\n"
@@ -389,7 +388,6 @@ static void vibrate(FILE* vibrator, int ms) {
 int main(int argc, char *argv[]) {
     struct sigaction sigact;
     int do_add_date = 0;
-    int do_compress = 0;
     int do_vibrate = 1;
     char* use_outfile = 0;
     int use_socket = 0;
@@ -429,7 +427,6 @@ int main(int argc, char *argv[]) {
             case 's': use_socket = 1;        break;
             case 'v': break;  // compatibility no-op
             case 'q': do_vibrate = 0;        break;
-            case 'z': do_compress = 6;       break;
             case 'p': do_fb = 1;             break;
             case 'B': do_broadcast = 1;      break;
             case '?': printf("\n");
@@ -524,10 +521,9 @@ int main(int argc, char *argv[]) {
             strlcat(screenshot_path, ".png", sizeof(screenshot_path));
         }
         strlcat(path, ".txt", sizeof(path));
-        if (do_compress) strlcat(path, ".gz", sizeof(path));
         strlcpy(tmp_path, path, sizeof(tmp_path));
         strlcat(tmp_path, ".tmp", sizeof(tmp_path));
-        gzip_pid = redirect_to_file(stdout, tmp_path, do_compress);
+        redirect_to_file(stdout, tmp_path);
     }
 
     dumpstate();
diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index 53bfff601..2be340b56 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -43,8 +43,8 @@ void print_properties();
 /* redirect output to a service control socket */
 void redirect_to_socket(FILE *redirect, const char *service);
 
-/* redirect output to a file, optionally gzipping; returns gzip pid */
-pid_t redirect_to_file(FILE *redirect, char *path, int gzip_level);
+/* redirect output to a file */
+void redirect_to_file(FILE *redirect, char *path);
 
 /* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
 const char *dump_traces();
diff --git a/cmds/dumpstate/utils.c b/cmds/dumpstate/utils.c
index 6beb5edb3..7ad9cf001 100644
--- a/cmds/dumpstate/utils.c
+++ b/cmds/dumpstate/utils.c
@@ -476,8 +476,8 @@ void redirect_to_socket(FILE *redirect, const char *service) {
     close(fd);
 }
 
-/* redirect output to a file, optionally gzipping; returns gzip pid (or -1) */
-pid_t redirect_to_file(FILE *redirect, char *path, int gzip_level) {
+/* redirect output to a file */
+void redirect_to_file(FILE *redirect, char *path) {
     char *chp = path;
 
     /* skip initial slash */
@@ -494,52 +494,15 @@ pid_t redirect_to_file(FILE *redirect, char *path, int gzip_level) {
         }
     }
 
-    int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+    int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC,
+                                     S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH));
     if (fd < 0) {
         fprintf(stderr, "%s: %s\n", path, strerror(errno));
         exit(1);
     }
 
-    pid_t gzip_pid = -1;
-    if (gzip_level > 0) {
-        int fds[2];
-        if (pipe(fds)) {
-            fprintf(stderr, "pipe: %s\n", strerror(errno));
-            exit(1);
-        }
-
-        fflush(redirect);
-        fflush(stdout);
-
-        gzip_pid = fork();
-        if (gzip_pid < 0) {
-            fprintf(stderr, "fork: %s\n", strerror(errno));
-            exit(1);
-        }
-
-        if (gzip_pid == 0) {
-            dup2(fds[0], STDIN_FILENO);
-            dup2(fd, STDOUT_FILENO);
-
-            close(fd);
-            close(fds[0]);
-            close(fds[1]);
-
-            char level[10];
-            snprintf(level, sizeof(level), "-%d", gzip_level);
-            execlp("gzip", "gzip", level, NULL);
-            fprintf(stderr, "exec(gzip): %s\n", strerror(errno));
-            _exit(-1);
-        }
-
-        close(fd);
-        close(fds[0]);
-        fd = fds[1];
-    }
-
-    dup2(fd, fileno(redirect));
+    TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect)));
     close(fd);
-    return gzip_pid;
 }
 
 static bool should_dump_native_traces(const char* path) {