Apple-2-HW
/
aiie
mirror of https://github.com/JorjBauer/aiie.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

basic improvement

This commit is contained in:
Jorj Bauer 2020-06-28 09:26:02 -04:00
parent fc47415592
commit 8591df2745
1 changed files with 50 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
nix/nix-filemanager.cpp
View File

@ -297,21 +297,63 @@ void NixFileManager::seekToEnd(int8_t fd)
int NixFileManager::write(int8_t fd, const void *buf, int nbyte)
{
uint8_t *p = (uint8_t *)buf;
for (int i=0; i<nbyte; i++) {
if (!writeByte(fd, p[i]))
if (fd < 0 || fd >= numCached)
return -1;
if (cachedNames[fd][0] == 0)
return -1;
uint32_t pos = fileSeekPositions[fd];
// open, seek, write, close.
bool ret = false;
int ffd = open(cachedNames[fd], O_WRONLY|O_CREAT, 0644);
if (ffd != -1) {
if (lseek(ffd, pos, SEEK_SET) == -1) {
close(ffd);
return -1;
}
ret = write(ffd, buf, nbyte);
if (ret != nbyte) {
printf("error writing: %d\n", errno);
}
close(ffd);
} else {
printf("Failed to open '%s' for writing: %d\n",
cachedNames[fd], errno);
}
return nbyte;
fileSeekPositions[fd]+=nbyte;
return ret;
};
int NixFileManager::read(int8_t fd, void *buf, int nbyte)
{
uint8_t *p = (uint8_t *)buf;
for (int i=0; i<nbyte; i++) {
p[i] = readByte(fd); // FIXME: no error handling
if (fd < 0 || fd >= numCached)
return -1; // FIXME: error handling?
if (cachedNames[fd][0] == 0)
return -1; // FIXME: error handling?
uint32_t pos = fileSeekPositions[fd];
// open, seek, read, close.
bool ret = false;
int ffd = open(cachedNames[fd], O_RDONLY);
if (ffd != -1) {
if (lseek(ffd, pos, SEEK_SET) == -1) {
close(ffd);
return -1;
}
ret = read(ffd, buf, nbyte);
close(ffd);
}
return nbyte;
fileSeekPositions[fd]+=nbyte;
if (ret != nbyte) {
printf("ERROR reading from pos %d: %d\n", pos, errno);
}
return ret;
};
int NixFileManager::lseek(int8_t fd, int offset, int whence)