cpp/openttd-patchpack/source Changeset - r11331:1af5419c9807

Changeset - r11331:1af5419c9807

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rubidium - 15 years ago 2009-03-12 14:22:17
rubidium@openttd.org

(svn r15686) -Codechange: make it a bit harder for crashes to trash your config file.

1 file changed with 30 insertions and 1 deletions:

src/ini.cpp

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src/ini.cpp

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@@ @@ -10,6 +10,12 @@ @@
 #include "string_func.h"
 #include "fileio_func.h"
 #if (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309L) || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500)
 # define WITH_FDATASYNC
 # include <unistd.h>
 #endif
 IniItem::IniItem(IniGroup *parent, const char *name, size_t len) : next(NULL), value(NULL), comment(NULL)
+{
 	if (len == 0) len = strlen(name);
@@ @@ -253,7 +259,16 @@ void IniFile::LoadFromDisk(const char *f @@
 bool IniFile::SaveToDisk(const char *filename)
+{
 	FILE *f = fopen(filename, "w");
 	/*
 	 * First write the configuration to a (temporary) file and then rename
 	 * that file. This to prevent that when OpenTTD crashes during the save
 	 * you end up with a truncated configuration file.
 	 */
 	char file_new[MAX_PATH];
 	strecpy(file_new, filename, lastof(file_new));
 	strecat(file_new, ".new", lastof(file_new));
 	FILE *f = fopen(file_new, "w");
 	if (f == NULL) return false;
 	for (const IniGroup *group = this->group; group != NULL; group = group->next) {
@@ @@ -275,6 +290,20 @@ bool IniFile::SaveToDisk(const char *fil @@
+	}
 	if (this->comment) fputs(this->comment, f);
 /*
  * POSIX (and friends) do not guarantee that when a file is closed it is
  * flushed to the disk. So we manually flush it do disk if we have the
  * APIs to do so. We only need to flush the data as the metadata itself
  * (modification date etc.) is not important to us; only the real data is.
  */
 #ifdef WITH_FDATASYNC
 	int ret = fdatasync(fileno(f));
 	fclose(f);
 	if (ret != 0) return false;
 #else
 	fclose(f);
 #endif
 	rename(file_new, filename);
 	return true;
+}

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