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| author | Valaris <Valaris@54d463be-8e91-2dee-dedb-b68131a5f0ec> | 2006-01-29 16:10:48 +0000 |
|---|---|---|
| committer | Valaris <Valaris@54d463be-8e91-2dee-dedb-b68131a5f0ec> | 2006-01-29 16:10:48 +0000 |
| commit | 620e60eebce2c1f35c5c9a82f6ca365b316587f5 (patch) | |
| tree | 38a39e0415f419d9a49ae456ed0e26654c23d559 /src/common/lock.c | |
| parent | a2675f07d7da22a7c6ae11f545bf8f671e785a82 (diff) | |
| download | hercules-620e60eebce2c1f35c5c9a82f6ca365b316587f5.tar.gz hercules-620e60eebce2c1f35c5c9a82f6ca365b316587f5.tar.bz2 hercules-620e60eebce2c1f35c5c9a82f6ca365b316587f5.tar.xz hercules-620e60eebce2c1f35c5c9a82f6ca365b316587f5.zip | |
AS OF SVN REV. 5901, WE ARE NOW USING TRUNK. ALL UNTESTED BUGFIXES/FEATURES GO INTO TRUNK.
IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK. EVERYTHING ELSE
GOES INTO TRUNK AND WILL BE MERGED INTO STABLE BY VALARIS AND WIZPUTER. -- VALARIS
git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@5094 54d463be-8e91-2dee-dedb-b68131a5f0ec
Diffstat (limited to 'src/common/lock.c')
| -rw-r--r-- | src/common/lock.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/common/lock.c b/src/common/lock.c new file mode 100644 index 000000000..c7bf623e5 --- /dev/null +++ b/src/common/lock.c @@ -0,0 +1,71 @@ +// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// For more information, see LICENCE in the main folder
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#ifndef WIN32
+#include <unistd.h>
+#else
+#include <windows.h>
+#define F_OK 0x0
+#define R_OK 0x4
+#endif
+#include "lock.h"
+#include "showmsg.h"
+
+#ifndef _WIN32
+ #define exists(filename) (!access(filename, F_OK))
+#else
+// could be speed up maybe?
+int exists(char *file) {
+ FILE *fp;
+ if ((fp = fopen(file,"r")) && fclose(fp) == 0) return 1;
+ return 0;
+}
+#endif
+
+// 書き込みファイルの保護処理
+// （書き込みが終わるまで、旧ファイルを保管しておく）
+
+// 新しいファイルの書き込み開始
+FILE* lock_fopen (const char* filename, int *info) {
+ char newfile[512];
+ FILE *fp;
+ int no = 0;
+
+ // 安全なファイル名を得る（手抜き）
+ do {
+ sprintf(newfile, "%s_%04d.tmp", filename, ++no);
+ } while((fp = fopen(newfile,"r")) && (fclose(fp), no < 9999));
+ *info = no;
+ return fopen(newfile,"w");
+}
+
+// 旧ファイルを削除＆新ファイルをリネーム
+int lock_fclose (FILE *fp, const char* filename, int *info) {
+ int ret = 1;
+ char newfile[512];
+ char oldfile[512];
+ if (fp != NULL) {
+ ret = fclose(fp);
+ sprintf(newfile, "%s_%04d.tmp", filename, *info);
+ sprintf(oldfile, "%s.bak", filename); // old backup file
+
+ if (exists(oldfile)) remove(oldfile); // remove backup file if it already exists
+ rename (filename, oldfile); // backup our older data instead of deleting it
+
+ // このタイミングで落ちると最悪。
+ if ((ret = rename(newfile,filename)) != 0) { // rename our temporary file to its correct name
+#if defined(__NETBSD__) || defined(_WIN32) || defined(sun) || defined (_sun) || defined (__sun__)
+ ShowError("%s - '"CL_WHITE"%s"CL_RESET"'\n", strerror(errno), newfile);
+#else
+ char ebuf[255];
+ ShowError("%s - '"CL_WHITE"%s"CL_RESET"'\n", strerror_r(errno, ebuf, sizeof(ebuf)), newfile);
+#endif
+ }
+ }
+
+ return ret;
+}
+
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