/* We need to rewrite the root path so it is based at /sysroot. */
int
do_aug_init (const char *root, int flags)
{
#ifdef HAVE_AUGEAS
char *buf;
if (aug) {
aug_close (aug);
aug = NULL;
}
buf = sysroot_path (root);
if (!buf) {
reply_with_perror ("malloc");
return -1;
}
aug = aug_init (buf, NULL, flags);
free (buf);
if (!aug) {
reply_with_error ("Augeas initialization failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int64_t
do_inotify_add_watch (const char *path, int mask)
{
#ifdef HAVE_SYS_INOTIFY_H
int64_t r;
char *buf;
NEED_INOTIFY (-1);
buf = sysroot_path (path);
if (!buf) {
reply_with_perror ("malloc");
return -1;
}
r = inotify_add_watch (inotify_fd, buf, mask);
free (buf);
if (r == -1) {
reply_with_perror ("%s", path);
return -1;
}
return r;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_inotify_init (int max_events)
{
#ifdef HAVE_SYS_INOTIFY_H
FILE *fp;
NEED_ROOT (, return -1);
if (max_events < 0) {
reply_with_error ("max_events < 0");
return -1;
}
if (max_events > 0) {
fp = fopen (MQE_PATH, "w");
if (fp == NULL) {
reply_with_perror (MQE_PATH);
return -1;
}
fprintf (fp, "%d\n", max_events);
fclose (fp);
}
if (inotify_fd >= 0)
if (do_inotify_close () == -1)
return -1;
#ifdef HAVE_INOTIFY_INIT1
inotify_fd = inotify_init1 (IN_NONBLOCK | IN_CLOEXEC);
if (inotify_fd == -1) {
reply_with_perror ("inotify_init1");
return -1;
}
#else
inotify_fd = inotify_init ();
if (inotify_fd == -1) {
reply_with_perror ("inotify_init");
return -1;
}
if (fcntl (inotify_fd, F_SETFL, O_NONBLOCK) == -1) {
reply_with_perror ("fcntl: O_NONBLOCK");
close (inotify_fd);
inotify_fd = -1;
return -1;
}
if (fcntl (inotify_fd, F_SETFD, FD_CLOEXEC) == -1) {
reply_with_perror ("fcntl: FD_CLOEXEC");
close (inotify_fd);
inotify_fd = -1;
return -1;
}
#endif
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_close (void)
{
#ifdef HAVE_AUGEAS
NEED_AUG(-1);
aug_close (aug);
aug = NULL;
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_load (void)
{
#ifdef HAVE_AUG_LOAD
NEED_AUG (-1);
if (aug_load (aug) == -1) {
reply_with_error ("Augeas load failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_inotify_rm_watch (int wd)
{
#ifdef HAVE_SYS_INOTIFY_H
NEED_INOTIFY (-1);
if (inotify_rm_watch (inotify_fd, wd) == -1) {
reply_with_perror ("%d", wd);
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_save (void)
{
#ifdef HAVE_AUGEAS
NEED_AUG (-1);
if (aug_save (aug) == -1) {
reply_with_error ("Augeas save failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_defvar (const char *name, const char *expr)
{
#ifdef HAVE_AUG_DEFVAR
int r;
NEED_AUG (-1);
r = aug_defvar (aug, name, expr);
if (r == -1) {
reply_with_error ("Augeas defvar failed");
return -1;
}
return r;
#else
NOT_AVAILABLE (-1);
#endif
}
char *
do_realpath (const char *path)
{
#ifdef HAVE_REALPATH
char *ret;
CHROOT_IN;
ret = realpath (path, NULL);
CHROOT_OUT;
if (ret == NULL) {
reply_with_perror ("%s", path);
return NULL;
}
return ret; /* caller frees */
#else
NOT_AVAILABLE (NULL);
#endif
}
int
do_aug_clear (const char *path)
{
#ifdef HAVE_AUGEAS
int r;
NEED_AUG (-1);
r = aug_set (aug, path, NULL);
if (r == -1) {
reply_with_error ("Augeas clear failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_insert (const char *path, const char *label, int before)
{
#ifdef HAVE_AUGEAS
int r;
NEED_AUG (-1);
r = aug_insert (aug, path, label, before);
if (r == -1) {
reply_with_error ("Augeas insert failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_mv (const char *src, const char *dest)
{
#ifdef HAVE_AUGEAS
int r;
NEED_AUG (-1);
r = aug_mv (aug, src, dest);
if (r == -1) {
reply_with_error ("Augeas mv failed");
return -1;
}
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
int
do_aug_rm (const char *path)
{
#ifdef HAVE_AUGEAS
int r;
NEED_AUG (-1);
r = aug_rm (aug, path);
if (r == -1) {
reply_with_error ("Augeas rm failed");
return -1;
}
return r;
#else
NOT_AVAILABLE (-1);
#endif
}
guestfs_int_int_bool *
do_aug_defnode (const char *name, const char *expr, const char *val)
{
#ifdef HAVE_AUG_DEFNODE
static guestfs_int_int_bool r;
int created;
NEED_AUG (NULL);
r.i = aug_defnode (aug, name, expr, val, &created);
if (r.i == -1) {
reply_with_error ("Augeas defnode failed");
return NULL;
}
r.b = created;
return &r;
#else
NOT_AVAILABLE (NULL);
#endif
}
char *
do_aug_get (const char *path)
{
#ifdef HAVE_AUGEAS
const char *value = NULL;
char *v;
int r;
NEED_AUG (NULL);
r = aug_get (aug, path, &value);
if (r == 0) {
reply_with_error ("no matching node");
return NULL;
}
if (r != 1) {
reply_with_error ("Augeas get failed");
return NULL;
}
/* value can still be NULL here, eg. try with path == "/augeas".
* I don't understand this case, and it seems to contradict the
* documentation.
*/
if (value == NULL) {
reply_with_error ("Augeas returned NULL match");
return NULL;
}
/* The value is an internal Augeas string, so we must copy it. GC FTW. */
v = strdup (value);
if (v == NULL) {
reply_with_perror ("strdup");
return NULL;
}
return v; /* Caller frees. */
#else
NOT_AVAILABLE (NULL);
#endif
}
int
do_inotify_close (void)
{
#ifdef HAVE_SYS_INOTIFY_H
NEED_INOTIFY (-1);
if (inotify_fd == -1) {
reply_with_error ("handle is not open");
return -1;
}
if (close (inotify_fd) == -1) {
reply_with_perror ("close");
return -1;
}
inotify_fd = -1;
inotify_posn = 0;
return 0;
#else
NOT_AVAILABLE (-1);
#endif
}
guestfs_int_inotify_event_list *
do_inotify_read (void)
{
#ifdef HAVE_SYS_INOTIFY_H
int space;
guestfs_int_inotify_event_list *ret;
NEED_INOTIFY (NULL);
ret = malloc (sizeof *ret);
if (ret == NULL) {
reply_with_perror ("malloc");
return NULL;
}
ret->guestfs_int_inotify_event_list_len = 0;
ret->guestfs_int_inotify_event_list_val = NULL;
/* Read events that are available, but make sure we won't exceed
* maximum message size. In order to achieve this we have to
* guesstimate the remaining space available.
*/
space = GUESTFS_MESSAGE_MAX / 2;
while (space > 0) {
struct inotify_event *event;
int r;
size_t n;
r = read (inotify_fd, inotify_buf + inotify_posn,
sizeof (inotify_buf) - inotify_posn);
if (r == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) /* End of list. */
break;
reply_with_perror ("read");
goto error;
}
if (r == 0) { /* End of file - we're not expecting it. */
reply_with_error ("unexpected end of file");
goto error;
}
inotify_posn += r;
/* Read complete events from the buffer and add them to the result. */
n = 0;
while (n < inotify_posn) {
guestfs_int_inotify_event *np;
guestfs_int_inotify_event *in;
event = (struct inotify_event *) &inotify_buf[n];
/* Have we got a complete event in the buffer? */
#ifdef __GNUC__
if (n + sizeof (struct inotify_event) > inotify_posn ||
n + sizeof (struct inotify_event) + event->len > inotify_posn)
break;
#else
#error "this code needs fixing so it works on non-GCC compilers"
#endif
np = realloc (ret->guestfs_int_inotify_event_list_val,
(ret->guestfs_int_inotify_event_list_len + 1) *
sizeof (guestfs_int_inotify_event));
if (np == NULL) {
reply_with_perror ("realloc");
goto error;
}
ret->guestfs_int_inotify_event_list_val = np;
in = &ret->guestfs_int_inotify_event_list_val[ret->guestfs_int_inotify_event_list_len];
ret->guestfs_int_inotify_event_list_len++;
in->in_wd = event->wd;
in->in_mask = event->mask;
in->in_cookie = event->cookie;
if (event->len > 0)
in->in_name = strdup (event->name);
else
in->in_name = strdup (""); /* Should have optional string fields XXX. */
if (in->in_name == NULL) {
reply_with_perror ("strdup");
goto error;
}
/* Estimate space used by this event in the message. */
space -= 16 + 4 + strlen (in->in_name) + 4;
/* Move pointer to next event. */
#ifdef __GNUC__
n += sizeof (struct inotify_event) + event->len;
#else
#error "this code needs fixing so it works on non-GCC compilers"
#endif
}
/* 'n' now points to the first unprocessed/incomplete
* message in the buffer. Copy that to offset 0 in the buffer.
*/
memmove (inotify_buf, &inotify_buf[n], inotify_posn - n);
inotify_posn -= n;
}
/* Return the messages. */
return ret;
error:
xdr_free ((xdrproc_t) xdr_guestfs_int_inotify_event_list, (char *) ret);
free (ret);
return NULL;
#else
NOT_AVAILABLE (NULL);
#endif
}