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mbox: bad return from function would result in wrong (always first) message being previewed if the cache did not exist

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This commit is contained in:
Jean-Francois Dockes 2019-08-27 14:42:14 +02:00
parent e4576fc12f
commit 85a3291fd7
1 changed files with 11 additions and 9 deletions
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20
src/internfile/mh_mbox.cpp
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@ -16,6 +16,8 @@
*/
#include "autoconfig.h"
#define LOGGER_LOCAL_LOGINC 3
#define _FILE_OFFSET_BITS 64
#include <errno.h>
@ -132,23 +134,23 @@ public:
~MboxCache() {}
int64_t get_offset(RclConfig *config, const string& udi, int msgnum) {
LOGDEB0("MboxCache::get_offsets: udi [" << udi << "] msgnum "
LOGDEB0("MboxCache::get_offset: udi [" << udi << "] msgnum "
<< msgnum << "\n");
if (!ok(config)) {
LOGDEB("MboxCache::get_offsets: init failed\n");
LOGDEB("MboxCache::get_offset: init failed\n");
return -1;
}
std::unique_lock<std::mutex> locker(o_mcache_mutex);
string fn = makefilename(udi);
ifstream instream(fn.c_str(), std::ifstream::binary);
if (!instream.good()) {
LOGSYSERR("MboxCache::get_offsets", "open", fn);
return false;
LOGSYSERR("MboxCache::get_offset", "open", fn);
return -1;
}
char blk1[M_o_b1size];
instream.read(blk1, M_o_b1size);
if (!instream.good()) {
LOGSYSERR("MboxCache::get_offsets", "read blk1", "");
LOGSYSERR("MboxCache::get_offset", "read blk1", "");
return -1;
}
ConfSimple cf(string(blk1, M_o_b1size));
@ -158,21 +160,21 @@ public:
<< udi << "], fudi [" << fudi << "]\n");
return -1;
}
LOGDEB1("MboxCache::get_offsets: reading offsets file at offs "
LOGDEB1("MboxCache::get_offset: reading offsets file at offs "
<< cacheoffset(msgnum) << "\n");
instream.seekg(cacheoffset(msgnum));
if (!instream.good()) {
LOGSYSERR("MboxCache::get_offsets", "seek",
LOGSYSERR("MboxCache::get_offset", "seek",
lltodecstr(cacheoffset(msgnum)));
return -1;
}
int64_t offset = -1;
instream.read((char*)&offset, sizeof(int64_t));
if (!instream.good()) {
LOGSYSERR("MboxCache::get_offsets", "read", "");
LOGSYSERR("MboxCache::get_offset", "read", "");
return -1;
}
LOGDEB0("MboxCache::get_offsets: ret " << offset << "\n");
LOGDEB0("MboxCache::get_offset: ret " << offset << "\n");
return offset;
}