FBFILE *
fbopen(const char *filename, const char *mode)
{
int openmode = 0;
int pmode = 0;
FBFILE *fb = NULL;
int fd;
s_assert(filename);
s_assert(mode);
if(filename == NULL || mode == NULL)
{
errno = EINVAL;
return NULL;
}
while (*mode)
{
switch (*mode)
{
case 'r':
openmode = O_RDONLY;
break;
case 'w':
openmode = O_WRONLY | O_CREAT | O_TRUNC;
pmode = 0644;
break;
case 'a':
openmode = O_WRONLY | O_CREAT | O_APPEND;
pmode = 0644;
break;
case '+':
openmode &= ~(O_RDONLY | O_WRONLY);
openmode |= O_RDWR;
break;
default:
break;
}
++mode;
}
if((fd = file_open(filename, openmode, pmode)) == -1)
{
return fb;
}
if(NULL == (fb = fdbopen(fd, NULL)))
file_close(fd);
return fb;
}
/** Open a new FBFILE.
* @param[in] filename Name of file to open.
* @param[in] mode fopen()-style mode string.
* @return Pointer to newly allocated FBFILE.
*/
FBFILE* fbopen(const char *filename, const char *mode)
{
int openmode = 0;
int pmode = 0;
FBFILE *fb = NULL;
int fd;
assert(filename);
assert(mode);
while (*mode) {
switch (*mode) {
case 'r':
openmode = O_RDONLY;
break;
case 'w':
openmode = O_WRONLY | O_CREAT | O_TRUNC;
pmode = S_IRUSR | S_IWUSR;
break;
case 'a':
openmode = O_WRONLY | O_CREAT | O_APPEND;
pmode = S_IRUSR | S_IWUSR;
break;
case '+':
openmode &= ~(O_RDONLY | O_WRONLY);
openmode |= O_RDWR;
break;
default:
break;
}
++mode;
}
/*
* stop NFS hangs...most systems should be able to open a file in
* 3 seconds. -avalon (courtesy of wumpus)
*/
alarm(3);
if ((fd = open(filename, openmode, pmode)) == -1) {
alarm(0);
return fb;
}
alarm(0);
if (NULL == (fb = fdbopen(fd, NULL)))
close(fd);
return fb;
}