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libconfigfile: update config file atomically when saving

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Signed-off-by: Jacek Jendrzej <crashdvb@googlemail.com>
This commit is contained in:
Stefan Seyfried
2013-03-03 23:04:54 +01:00
committed by Jacek Jendrzej
parent b6df7de7f7
commit 2afc06a793
1 changed files with 6 additions and 2 deletions
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8
lib/libconfigfile/configfile.cpp
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@@ -91,7 +91,9 @@ bool CConfigFile::loadConfig(const std::string & filename)
bool CConfigFile::saveConfig(const char * const filename) bool CConfigFile::saveConfig(const char * const filename)
{ {
std::fstream configFile(filename); const char *tmpname = (std::string(filename) + ".tmp").c_str();
unlink(tmpname);
std::fstream configFile(tmpname, std::ios::out);
if (configFile != NULL) if (configFile != NULL)
{ {
@@ -104,7 +106,9 @@ bool CConfigFile::saveConfig(const char * const filename)
configFile.sync(); configFile.sync();
configFile.close(); configFile.close();
chmod(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); chmod(tmpname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
/* TODO: check available space? */
rename(tmpname, filename);
modifiedFlag = false; modifiedFlag = false;
return true; return true;