static void post_socketpair(struct syscallrecord *rec)
{
//TODO: on success we should put the fd's that
// were created into a child-local fd array.
freeptr(&rec->a4);
}
static void post_sendmsg(__unused__ struct syscallrecord *rec)
{
struct msghdr *msg = (struct msghdr *) rec->a2;
if (msg != NULL) {
free(msg->msg_name); // free sockaddr
freeptr(&rec->a2);
}
}
static void post_bpf(struct syscallrecord *rec)
{
union bpf_attr *attr = (union bpf_attr *) rec->a2;
switch (rec->a1) {
case BPF_MAP_CREATE:
//TODO: add fd to local object cache
break;
case BPF_PROG_LOAD:
//TODO: add fd to local object cache
if (attr->prog_type == BPF_PROG_TYPE_SOCKET_FILTER) {
void *ptr = (void *) attr->insns;
free(ptr);
}
break;
default:
break;
}
freeptr(&rec->a2);
}
static void post_send(struct syscallrecord *rec)
{
freeptr(&rec->a2);
}
static void post_poll(struct syscallrecord *rec)
{
freeptr(&rec->a1);
}
static void post_mincore(struct syscallrecord *rec)
{
freeptr(&rec->a3);
}
long moveFile(char* filename){
/* Validate input */
if(filename==NULL || strlen(filename)<=0){
fprintf(stderr, "ERROR: No filename provided for a move thread.\n");
return -1;
}
/* Ensure desination directory global variable exists */
if(destDirectoryName==NULL || strlen(destDirectoryName)<=0){
fprintf(stderr, "ERROR: No desination directory provided for a move thread.\n");
return -1;
}
/* Determine the if 'filename' is path. If so, find the start of the actual filename */
int filenameStart = 0; //Index of the start of the acutally filename in the 'filename' variable
int a; //Iterator
/* Start at the end of the string to find the last / (assume not the last character) */
for(a=strlen(filename)-2; a>=0; a--){
if(filename[a]=='/'){
filenameStart=a+1;
break;
}
}
/* The file's actual name is the filepath offet but the path's length */
char* actualFilename = filename+filenameStart;
/* Output details if debug */
if(verbose>=3){
printf("filenameStart: %d - filename: %s - actualFilename: %s\n",filenameStart,filename,actualFilename);
}
/* Validate actualFilename doesn't end with '/' or '\' */
int actualFilename_lastCharIndex = strlen(actualFilename)-1;
char actualFilename_lastChar = actualFilename[actualFilename_lastCharIndex];
if(actualFilename_lastChar=='/' || actualFilename_lastChar=='\\'){
printf("Source file '%s' may not end with a slash.\n",actualFilename);
return -1;
}
/* Determine the new file's filepath; allocate memory and confirm malloc worked. */
/* New filepath will be the string length of destDirectoryName, actualFilename, a '/', and a null terminator */
long newPathSize = ((long)strlen(destDirectoryName) + (long)strlen(actualFilename) + 1 + 1)*(long)sizeof(char);
char* tofilename = malloc(newPathSize);
if(tofilename==NULL){
fprintf(stderr, "ERROR: Could allocate memory for the destination filename for '%s'\n",filename);
return -1;
}
/* Add the filename to the directory to get the final path */
strcpy(tofilename,destDirectoryName);
int destDirectoryName_lastCharIndex = strlen(destDirectoryName)-1;
if(destDirectoryName[destDirectoryName_lastCharIndex]!='/'){
/* If the desination does not inlude a '/', add it */
strcat(tofilename,"/");
}
strcat(tofilename,actualFilename);
/* Ensure 'tofilename' was created */
if(tofilename==NULL || strlen(tofilename)<=0){
fprintf(stderr, "ERROR: Could not determine destination filename for '%s'\n",filename);
return -1;
}
/* Check for source file existance; print and return on error */
if(access(filename, F_OK)==-1){
printf("Source file '%s' not found.\n",filename);
freeptr(tofilename);
return -1;
}
/* Check for desination file existance; print and return on error */
if(access(tofilename, F_OK)!=-1){
printf("Destination file for '%s' ('%s') already exists.\n",filename,tofilename);
freeptr(tofilename);
return -1;
}
/* Print status message */
if(verbose>=1){
printf("Moving '%s' \t-->\t '%s'\n",filename,tofilename);
}
/* Setup the buffer and file pointers */
int f_dest, f_source;
int errornum;
char buffer[bufferSize];
ssize_t bRead;
ssize_t bWritten;
long totalSize=0;
/* Open the source file to read from it; print and return on error */
f_source = open(filename, O_RDONLY);
if(f_source<0){
fprintf(stderr,"ERROR: Could not read from file '%s'\n",filename);
freeptr(tofilename);
return -1;
}
/* Open the destination file to wrtie to it; print and return on error */
f_dest = open(tofilename, O_WRONLY | O_CREAT | O_EXCL, 0666);
if(f_dest<0){
fprintf(stderr,"ERROR: Could create the destination file '%s'\n",tofilename);
closeIfPossible(f_source, 0);
freeptr(tofilename);
return -1;
}
size_t bufferBytes = sizeof buffer;
/* Read from the source file in increments without exceding the buffer's size */
while(bRead=read(f_source, buffer, bufferBytes) ){
/* Break the loop if read() returned -1 (an error) */
if(bRead<=0){ break; }
/* Keep track of the file's total size */
totalSize+=(long)bRead;
/* Create a pointer to move along the buffer as it is written out */
char* cBufferPtr = buffer;
/* Write to the destination file while there are still bytes in the buffer */
while(bRead>0){
/* Write out data to the destination file */
bWritten = write(f_dest, cBufferPtr, bRead);
/* Ensure bytes were output and write did not return -1 (error) */
if(bWritten>0){
bRead -= bWritten; //Decrease the number of bytes remaining in the buffer
cBufferPtr += bWritten; //Move the buffer pointer along for the next write
}else if(errno!=EINTR){
/* write() returned 0 or -1, and was not interupted, there was an error */
fprintf(stderr,"ERROR: Could not write to destination file '%s'\n",tofilename);
closeIfPossible(f_dest, 0);
closeIfPossible(f_source, 0);
freeptr(tofilename);
return -1;
}
}
}
/* Ensure read() in the loop above did not return -1 (error) */
if(bRead!=0){
fprintf(stderr,"ERROR: Could not read from source file '%s'\n",filename);
closeIfPossible(f_dest, 0);
closeIfPossible(f_source, 0);
freeptr(tofilename);
return -1;
}
/* Else, arrived at end of file because read() returned 0; copy was successfull; close file pointers */
closeIfPossible(f_dest, 1);
closeIfPossible(f_source, 1);
/* Remove the orginal file */
if(unlink(filename)!=0){
/* unlink() returned -1 (error); print an error message */
fprintf(stderr,"ERROR: Desination file successfully created, but the \
source file '%s' could not be removed.\n",filename);
freeptr(tofilename);
return -1;
}
