/*
* open_file_add -- add an open file to the lut
*/
static struct fd_lut *
open_file_add(struct fd_lut *root, int fdnum, const char *fdfile)
{
if (root == NULL) {
root = ZALLOC(sizeof (*root));
root->fdnum = fdnum;
root->fdfile = STRDUP(fdfile);
} else if (root->fdnum == fdnum)
FATAL("duplicate fdnum: %d", fdnum);
else if (root->fdnum < fdnum)
root->left = open_file_add(root->left, fdnum, fdfile);
else
root->right = open_file_add(root->right, fdnum, fdfile);
return root;
}
/*
* record_open_files -- make a list of open files (used at START() time)
*/
static void
record_open_files()
{
int dirfd;
DIR *dirp = NULL;
struct dirent *dp;
if ((dirfd = open("/proc/self/fd", O_RDONLY)) < 0 ||
(dirp = fdopendir(dirfd)) == NULL)
FATAL("!/proc/self/fd");
while ((dp = readdir(dirp)) != NULL) {
int fdnum;
char fdfile[PATH_MAX];
ssize_t cc;
if (*dp->d_name == '.')
continue;
if ((cc = readlinkat(dirfd, dp->d_name, fdfile, PATH_MAX)) < 0)
FATAL("!readlinkat: /proc/self/fd/%s", dp->d_name);
fdfile[cc] = '\0';
fdnum = atoi(dp->d_name);
if (dirfd == fdnum)
continue;
Fd_lut = open_file_add(Fd_lut, fdnum, fdfile);
}
closedir(dirp);
}
static struct fd_info *add_fd(struct file_info *file, int fd)
{
struct fd_info *fdi;
size_t sz;
sz = sizeof(struct fd_info);
fdi = (struct fd_info *) malloc(sz);
CHECK(fdi != NULL);
memset(fdi, 0, sz);
fdi->next = file->fds;
fdi->file = file;
fdi->fd = fd;
file->fds = fdi;
open_file_add(fdi);
return fdi;
}
int open_file(char *file_name,int flag)
{
int i,j;
if(openfile.length<=n)
{
return FAIL;
}
i=name_test(file_name);
j=file_exist(file_name);
if(i!=OK||j!=TRUE)
{
return FAIL;
}
file_t open_new;
open_new=get_file_from_name(file_name);
open_file_add(&openfile.file[openfile.length++],open_new,flag);
}
