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cleanup, free memory

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cathugger 2021-12-10 13:27:01 +02:00
parent 1679e51e1b
commit 67868f4126
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GPG key ID: 9BADDA2DAF6F01A8
1 changed files with 85 additions and 54 deletions
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139
ioutil.c
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@ -1,5 +1,6 @@
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include "types.h"
#include "ioutil.h"
#include "vec.h"
@ -61,28 +62,14 @@ int createdir(const char *path,int secret)
return mkdir(path,secret ? 0700 : 0777);
}
int syncwrite(const char *filename,int secret,const u8 *data,size_t datalen)
static int syncwritefile(const char *filename,const char *tmpname,int secret,const u8 *data,size_t datalen)
{
//fprintf(stderr,"filename = %s\n",filename);
VEC_STRUCT(,char) tmpname;
size_t fnlen = strlen(filename);
VEC_INIT(tmpname);
VEC_ADDN(tmpname,fnlen + 4 /* ".tmp" */ + 1 /* "\0" */);
memcpy(&VEC_BUF(tmpname,0),filename,fnlen);
strcpy(&VEC_BUF(tmpname,fnlen),".tmp");
const char *tmpnamestr = &VEC_BUF(tmpname,0);
//fprintf(stderr,"tmpnamestr = %s\n",tmpnamestr);
FH f = createfile(tmpnamestr,secret);
FH f = createfile(tmpname,secret);
if (f == FH_invalid)
return -1;
if (writeall(f,data,datalen) < 0) {
closefile(f);
remove(tmpnamestr);
return -1;
goto failclose;
}
int sret;
@ -92,48 +79,76 @@ int syncwrite(const char *filename,int secret,const u8 *data,size_t datalen)
if (errno == EINTR)
continue;
closefile(f);
remove(tmpnamestr);
return -1;
goto failclose;
}
} while (0);
if (closefile(f) < 0) {
remove(tmpnamestr);
return -1;
goto failrm;
}
if (rename(tmpnamestr,filename) < 0) {
remove(tmpnamestr);
return -1;
if (rename(tmpname,filename) < 0) {
goto failrm;
}
VEC_STRUCT(,char) dirname;
const char *dirnamestr;
return 0;
failclose:
(void) closefile(f);
failrm:
remove(tmpname);
return -1;
}
int syncwrite(const char *filename,int secret,const u8 *data,size_t datalen)
{
//fprintf(stderr,"filename = %s\n",filename);
size_t fnlen = strlen(filename);
VEC_STRUCT(,char) tmpnamebuf;
VEC_INIT(tmpnamebuf);
VEC_ADDN(tmpnamebuf,fnlen + 4 /* ".tmp" */ + 1 /* "\0" */);
memcpy(&VEC_BUF(tmpnamebuf,0),filename,fnlen);
strcpy(&VEC_BUF(tmpnamebuf,fnlen),".tmp");
const char *tmpname = &VEC_BUF(tmpnamebuf,0);
//fprintf(stderr,"tmpname = %s\n",tmpname);
int r = syncwritefile(filename,tmpname,secret,data,datalen);
VEC_FREE(tmpnamebuf);
if (r < 0)
return r;
VEC_STRUCT(,char) dirnamebuf;
VEC_INIT(dirnamebuf);
const char *dirname;
for (ssize_t x = ((ssize_t)fnlen) - 1;x >= 0;--x) {
if (filename[x] == '/') {
if (x)
--x;
++x;
VEC_INIT(dirname);
VEC_ADDN(dirname,x + 1);
memcpy(&VEC_BUF(dirname,0),filename,x);
VEC_BUF(dirname,x) = '\0';
dirnamestr = &VEC_BUF(dirname,0);
VEC_ADDN(dirnamebuf,x + 1);
memcpy(&VEC_BUF(dirnamebuf,0),filename,x);
VEC_BUF(dirnamebuf,x) = '\0';
dirname = &VEC_BUF(dirnamebuf,0);
goto foundslash;
}
}
/* not found slash, fall back to "." */
dirnamestr = ".";
dirname = ".";
foundslash:
//fprintf(stderr,"dirnamestr = %s\n",dirnamestr);
//fprintf(stderr,"dirname = %s\n",dirname);
;
int dirf;
do {
dirf = open(dirnamestr,O_RDONLY);
dirf = open(dirname,O_RDONLY);
if (dirf < 0) {
if (errno == EINTR)
continue;
@ -143,6 +158,7 @@ foundslash:
}
} while (0);
int sret;
do {
sret = fsync(dirf);
if (sret < 0) {
@ -157,6 +173,7 @@ foundslash:
(void) closefile(dirf); // don't care
skipdsync:
VEC_FREE(dirnamebuf);
return 0;
}
@ -201,42 +218,56 @@ int createdir(const char *path,int secret)
return CreateDirectoryA(path,0) ? 0 : -1;
}
int syncwrite(const char *filename,int secret,const char *data,size_t datalen)
static int syncwritefile(const char *filename,const char *tmpname,int secret,const char *data,size_t datalen)
{
VEC_STRUCT(,char) tmpname;
size_t fnlen = strlen(filename);
VEC_INIT(tmpname);
VEC_ADDN(tmpname,fnlen + 4 /* ".tmp" */ + 1 /* "\0" */);
memcpy(&VEC_BUF(tmpname,0),filename,fnlen);
strcpy(&VEC_BUF(tmpname,fnlen),".tmp");
const char *tmpnamestr = &VEC_BUF(tmpname,0);
FH f = createfile(tmpnamestr,secret)
if (f == FH_invalid)
return -1;
if (writeall(f,data,datalen) < 0) {
closefile(f);
remove(tmpnamestr);
return -1;
goto failclose;
}
if (FlushFileBuffers(f) == 0) {
closefile(f);
remove(tmpnamestr);
return -1;
goto failclose;
}
if (closefile(f) < 0) {
remove(tmpnamestr);
return -1;
goto failrm;
}
if (MoveFileA(tmpnamestr,filename) == 0) {
remove(tmpnamestr);
return -1;
goto failrm;
}
return 0;
failclose:
(void) closefile(f);
failrm:
remove(tmpnamestr);
return -1;
}
int syncwrite(const char *filename,int secret,const char *data,size_t datalen)
{
size_t fnlen = strlen(filename);
VEC_STRUCT(,char) tmpnamebuf;
VEC_INIT(tmpnamebuf);
VEC_ADDN(tmpnamebuf,fnlen + 4 /* ".tmp" */ + 1 /* "\0" */);
memcpy(&VEC_BUF(tmpnamebuf,0),filename,fnlen);
strcpy(&VEC_BUF(tmpnamebuf,fnlen),".tmp");
const char *tmpname = &VEC_BUF(tmpnamebuf,0);
int r = syncwritefile(filename,tmpname,secret,data,datalen);
VEC_FREE(tmpnamebuf);
if (r < 0)
return r;
// can't fsync parent dir on windows so just end here
return 0;