Move hooklib from src/Hooks to lib/Utils

3 files changed, 145 insertions, 1 deletions

diff --git a/lib/Utils/Makefile.am b/lib/Utils/Makefile.am
index 13144f68..f9979ec0 100644
--- a/lib/Utils/Makefile.am
+++ b/lib/Utils/Makefile.am
@@ -26,7 +26,8 @@ libABRTUtils_la_SOURCES = \
     ABRTException.cpp \
     backtrace.h backtrace.c \
     backtrace_parser.y \
-    strbuf.h strbuf.c
+    strbuf.h strbuf.c \
+    hooklib.h hooklib.cpp
 libABRTUtils_la_CPPFLAGS = \
     -Wall -Werror \
     -I$(srcdir)/../../inc \
diff --git a/lib/Utils/hooklib.cpp b/lib/Utils/hooklib.cpp
new file mode 100644
index 00000000..a722ef5f
--- /dev/null
+++ b/lib/Utils/hooklib.cpp
@@ -0,0 +1,122 @@
+/*
+    Copyright (C) 2009	RedHat inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    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.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "abrtlib.h"
+#include "hooklib.h"
+#include "DebugDump.h"
+#include <sys/statvfs.h>
+
+using namespace std;
+
+void parse_conf(const char *additional_conf, unsigned *setting_MaxCrashReportsSize, bool *setting_MakeCompatCore)
+{
+    FILE *fp = fopen(CONF_DIR"/abrt.conf", "r");
+    if (!fp)
+        return;
+
+    char line[256];
+    while (1)
+    {
+        if (fgets(line, sizeof(line), fp) == NULL)
+        {
+            fclose(fp);
+            if (additional_conf)
+            {
+                /* Next .conf file plz */
+                fp = fopen(additional_conf, "r");
+                if (fp)
+                {
+                    additional_conf = NULL;
+                    continue;
+                }
+            }
+            break;
+        }
+
+        strchrnul(line, '\n')[0] = '\0';
+        const char *p = skip_whitespace(line);
+#undef DIRECTIVE
+#define DIRECTIVE "MaxCrashReportsSize"
+        if (setting_MaxCrashReportsSize && strncmp(p, DIRECTIVE, sizeof(DIRECTIVE)-1) == 0)
+        {
+            p = skip_whitespace(p + sizeof(DIRECTIVE)-1);
+            if (*p != '=')
+                continue;
+            p = skip_whitespace(p + 1);
+            if (isdigit(*p))
+            {
+                /* x1.25: go a bit up, so that usual in-daemon trimming
+                 * kicks in first, and we don't "fight" with it. */
+                *setting_MaxCrashReportsSize = (unsigned long)xatou(p) * 5 / 4;
+            }
+            continue;
+        }
+#undef DIRECTIVE
+#define DIRECTIVE "MakeCompatCore"
+        if (setting_MakeCompatCore && strncmp(p, DIRECTIVE, sizeof(DIRECTIVE)-1) == 0)
+        {
+            p = skip_whitespace(p + sizeof(DIRECTIVE)-1);
+            if (*p != '=')
+                continue;
+            p = skip_whitespace(p + 1);
+            *setting_MakeCompatCore = string_to_bool(p);
+            continue;
+        }
+#undef DIRECTIVE
+        /* add more 'if (strncmp(p, DIRECTIVE, sizeof(DIRECTIVE)-1) == 0)' here... */
+    }
+}
+
+void check_free_space(unsigned setting_MaxCrashReportsSize)
+{
+    struct statvfs vfs;
+    if (statvfs(DEBUG_DUMPS_DIR, &vfs) != 0)
+    {
+        perror_msg_and_die("statvfs('%s')", DEBUG_DUMPS_DIR);
+    }
+
+    /* Check that at least MaxCrashReportsSize/4 MBs are free */
+
+    /* fs_free_mb_x4 ~= vfs.f_bfree * vfs.f_bsize * 4, expressed in MBytes.
+     * Need to neither overflow nor round f_bfree down too much. */
+    unsigned long fs_free_mb_x4 = ((unsigned long long)vfs.f_bfree / (1024/4)) * vfs.f_bsize / 1024;
+    if (fs_free_mb_x4 < setting_MaxCrashReportsSize)
+    {
+        error_msg_and_die("aborting dump: only %luMiB is available on %s\n", fs_free_mb_x4 / 4, DEBUG_DUMPS_DIR);
+    }
+}
+
+/* rhbz#539551: "abrt going crazy when crashing process is respawned".
+ * Check total size of dump dir, if it overflows,
+ * delete oldest/biggest dumps.
+ */
+void trim_debug_dumps(unsigned setting_MaxCrashReportsSize, const char *exclude_path)
+{
+    int count = 10;
+    string worst_dir;
+    while (--count >= 0)
+    {
+        const char *base_dirname = strrchr(exclude_path, '/') + 1; /* never NULL */
+        /* We exclude our own dump from candidates for deletion (3rd param): */
+        double dirsize = get_dirsize_find_largest_dir(DEBUG_DUMPS_DIR, &worst_dir, base_dirname);
+        if (dirsize / (1024*1024) < setting_MaxCrashReportsSize || worst_dir == "")
+            break;
+        log("size of '%s' >= %u MB, deleting '%s'", DEBUG_DUMPS_DIR, setting_MaxCrashReportsSize, worst_dir.c_str());
+        delete_debug_dump_dir(concat_path_file(DEBUG_DUMPS_DIR, worst_dir.c_str()).c_str());
+        worst_dir = "";
+    }
+}
diff --git a/lib/Utils/hooklib.h b/lib/Utils/hooklib.h
new file mode 100644
index 00000000..0794ff60
--- /dev/null
+++ b/lib/Utils/hooklib.h
@@ -0,0 +1,21 @@
+/*
+    Copyright (C) 2009	RedHat inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    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.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+void parse_conf(const char *additional_conf, unsigned *setting_MaxCrashReportsSize, bool *setting_MakeCompatCore);
+void check_free_space(unsigned setting_MaxCrashReportsSize);
+void trim_debug_dumps(unsigned setting_MaxCrashReportsSize, const char *exclude_path);