static int i2cdetect_dash_l(struct dirtree *node)
{
int suffix_len = strlen("/name");
int bus;
char *fname, *p;
unsigned long funcs;
if (!node->parent) return DIRTREE_RECURSE; // Skip the directory itself.
if (sscanf(node->name, "i2c-%d", &bus) != 1) return 0;
funcs = i2c_get_funcs(bus);
fname = dirtree_path(node, &suffix_len);
strcat(fname, "/name");
xreadfile(fname, toybuf, sizeof(toybuf));
free(fname);
if ((p = strchr(toybuf, '\n'))) *p = 0;
// "i2c-1 i2c Synopsys DesignWare I2C adapter I2C adapter"
printf("%s\t%-10s\t%-32s\t%s\n", node->name,
(funcs & I2C_FUNC_I2C) ? "i2c" : "?",
toybuf,
(funcs & I2C_FUNC_I2C) ? "I2C Adapter" : "?");
return 0;
}
// Get directory information.
static int retell_dir(struct dirtree *root)
{
char *fpath = NULL;
if (root->again) {
xputc('\n');
return 0;
}
if (S_ISDIR(root->st.st_mode) && !root->parent)
return (DIRTREE_RECURSE | DIRTREE_COMEAGAIN);
fpath = dirtree_path(root, NULL);
//Special case: with '-a' option and '.'/'..' also included in printing list.
if ((root->name[0] != '.') || (toys.optflags & FLAG_a)) {
print_file_attr(fpath);
if (S_ISDIR(root->st.st_mode) && (toys.optflags & FLAG_R)
&& dirtree_notdotdot(root)) {
xprintf("\n%s:\n", fpath);
free(fpath);
return (DIRTREE_RECURSE | DIRTREE_COMEAGAIN);
}
}
free(fpath);
return 0;
}
// Update attribute of given file.
static int update_attr(struct dirtree *root)
{
unsigned long fval = 0;
char *fpath = NULL;
int fd;
if (!dirtree_notdotdot(root)) return 0;
/*
* if file is a link and recursive is set or file is not regular+link+dir
* (like fifo or dev file) then escape the file.
*/
if ((S_ISLNK(root->st.st_mode) && chattr.recursive)
|| (!S_ISREG(root->st.st_mode) && !S_ISLNK(root->st.st_mode)
&& !S_ISDIR(root->st.st_mode)))
return 0;
fpath = dirtree_path(root, NULL);
if (-1 == (fd=open(fpath, O_RDONLY | O_NONBLOCK))) {
free(fpath);
return DIRTREE_ABORT;
}
// Get current attr of file.
if (ext2_getflag(fd, &(root->st), &fval) < 0) {
perror_msg("read flags of '%s'", fpath);
free(fpath);
xclose(fd);
return DIRTREE_ABORT;
}
if (chattr.set) { // for '=' operator.
if (ext2_setflag(fd, &(root->st), chattr.set) < 0)
perror_msg("setting flags '%s'", fpath);
} else { // for '-' / '+' operator.
fval &= ~(chattr.rm);
fval |= chattr.add;
if (!S_ISDIR(root->st.st_mode)) fval &= ~FS_DIRSYNC_FL;
if (ext2_setflag(fd, &(root->st), fval) < 0)
perror_msg("setting flags '%s'", fpath);
}
if (chattr.vflag) { // set file version
if (ioctl(fd, FS_IOC_SETVERSION, (void*)&chattr.version) < 0)
perror_msg("while setting version on '%s'", fpath);
}
free(fpath);
xclose(fd);
if (S_ISDIR(root->st.st_mode) && chattr.recursive) return DIRTREE_RECURSE;
return 0;
}
char *dirtree_path(struct dirtree *node, int *plen)
{
char *path;
int len;
if (!node) {
path = xmalloc(*plen);
*plen = 0;
return path;
}
len = (plen ? *plen : 0)+strlen(node->name)+1;
path = dirtree_path(node->parent, &len);
if (len && path[len-1] != '/') path[len++]='/';
len = (stpcpy(path+len, node->name) - path);
if (plen) *plen = len;
return path;
}
struct dirtree *dirtree_add_node(struct dirtree *parent, char *name, int flags)
{
struct dirtree *dt = NULL;
struct stat st;
int len = 0, linklen = 0;
if (name) {
// open code this because haven't got node to call dirtree_parentfd() on yet
int fd = parent ? parent->data : AT_FDCWD;
if (xfstatat(fd, name, &st, AT_SYMLINK_NOFOLLOW*!(flags&DIRTREE_SYMFOLLOW)))
goto error;
if (S_ISLNK(st.st_mode)) {
if (0>(linklen = xreadlinkat(fd, name, libbuf, 4095))) goto error;
libbuf[linklen++]=0;
}
len = strlen(name);
}
dt = xzalloc((len = sizeof(struct dirtree)+len+1)+linklen);
dt->parent = parent;
if (name) {
memcpy(&(dt->st), &st, sizeof(struct stat));
strcpy(dt->name, name);
if (linklen) {
dt->symlink = memcpy(len+(char *)dt, libbuf, linklen);
dt->data = --linklen;
}
}
return dt;
error:
if (!(flags&DIRTREE_SHUTUP) && notdotdot(name)) {
char *path = parent ? dirtree_path(parent, 0) : "";
perror_msg("%s%s%s", path, parent ? "/" : "", name);
if (parent) free(path);
}
if (parent) parent->symlink = (char *)1;
free(dt);
return 0;
}
static int callback(struct dirtree *node)
{
// Entries in /sys/class/block aren't char devices, so skip 'em. (We'll
// get block devices out of /sys/block.)
if(!strcmp(node->name, "block")) return 0;
// Does this directory have a "dev" entry in it?
// This is path based because the hotplug callbacks are
if (S_ISDIR(node->st.st_mode) || S_ISLNK(node->st.st_mode)) {
int len=4;
char *dev = dirtree_path(node, &len);
strcpy(dev+len, "/dev");
if (!access(dev, R_OK)) make_device(dev);
free(dev);
}
// Circa 2.6.25 the entries more than 2 deep are all either redundant
// (mouse#, event#) or unnamed (every usb_* entry is called "device").
return (node->parent && node->parent->parent) ? 0 : DIRTREE_RECURSE;
}
