/*
* Copyright (C) 2019 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* Authors: Mickey Sola
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#if HAVE_CONFIG_H
#include "clamav-config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <pthread.h>
#include <string.h>
#include <errno.h>
#include <stdbool.h>
#if defined(FANOTIFY)
#include <sys/fanotify.h>
#include <sys/inotify.h>
#endif
#include "../fanotif/fanotif.h"
#include "hash.h"
#include "inotif.h"
#include "../scan/thread.h"
#include "../scan/queue.h"
#include "../misc/utils.h"
#include "libclamav/clamav.h"
#include "libclamav/scanners.h"
#include "shared/optparser.h"
#include "shared/output.h"
#include "clamd/server.h"
#include "clamd/others.h"
#include "clamd/scanner.h"
#if defined(FANOTIFY)
static int onas_ddd_init_ht(uint32_t ht_size);
static int onas_ddd_init_wdlt(uint64_t nwatches);
static int onas_ddd_grow_wdlt();
static int onas_ddd_watch(const char *pathname, int fan_fd, uint64_t fan_mask, int in_fd, uint64_t in_mask);
static int onas_ddd_watch_hierarchy(const char *pathname, size_t len, int fd, uint64_t mask, uint32_t type);
static int onas_ddd_unwatch(const char *pathname, int fan_fd, int in_fd);
static int onas_ddd_unwatch_hierarchy(const char *pathname, size_t len, int fd, uint32_t type);
static void onas_ddd_handle_in_moved_to(struct onas_context *ctx, const char *path, const char *child_path, const struct inotify_event *event, int wd, uint64_t in_mask);
static void onas_ddd_handle_in_create(struct onas_context *ctx, const char *path, const char *child_path, const struct inotify_event *event, int wd, uint64_t in_mask);
static void onas_ddd_handle_in_moved_from(struct onas_context *ctx, const char *path, const char *child_path, const struct inotify_event *event, int wd);
static void onas_ddd_handle_in_delete(struct onas_context *ctx, const char *path, const char *child_path, const struct inotify_event *event, int wd);
static void onas_ddd_handle_extra_scanning(struct onas_context *ctx, const char *pathname, int extra_options);
static void onas_ddd_exit(void *arg);
/* TODO: Unglobalize these. */
static struct onas_ht *ddd_ht;
static char **wdlt;
static uint32_t wdlt_len;
static int onas_in_fd;
extern pthread_t ddd_pid;
static int onas_ddd_init_ht(uint32_t ht_size)
{
if (ht_size <= 0)
ht_size = ONAS_DEFAULT_HT_SIZE;
return onas_ht_init(&ddd_ht, ht_size);
}
/**
* @brief Initialize watch descriptor lookup table which we use alongside inotify to keep track of which open watchpoints correspond to which objects
*/
static int onas_ddd_init_wdlt(uint64_t nwatches)
{
if (nwatches <= 0) return CL_EARG;
wdlt = (char **)cli_calloc(nwatches << 1, sizeof(char *));
if (!wdlt) return CL_EMEM;
wdlt_len = nwatches << 1;
return CL_SUCCESS;
}
/**
* @brief Initialize watch descriptor lookup table which we use alongside inotify to keep track of which open watchpoints correspond to which objects
*/
static int onas_ddd_grow_wdlt()
{
char **ptr = NULL;
ptr = (char **)cli_realloc(wdlt, wdlt_len << 1);
if (ptr) {
wdlt = ptr;
memset(&ptr[wdlt_len], 0, sizeof(char *) * (wdlt_len - 1));
} else {
return CL_EMEM;
}
wdlt_len <<= 1;
return CL_SUCCESS;
}
/* TODO: Support configuration for changing/setting number of inotify watches. */
int onas_ddd_init(uint64_t nwatches, size_t ht_size)
{
const char *nwatch_file = "/proc/sys/fs/inotify/max_user_watches";
int nwfd = 0;
int ret = 0;
char nwatch_str[MAX_WATCH_LEN];
char *p = NULL;
nwatches = 0;
nwfd = open(nwatch_file, O_RDONLY);
if (nwfd < 0) return CL_EOPEN;
ret = read(nwfd, nwatch_str, MAX_WATCH_LEN);
close(nwfd);
if (ret < 0) return CL_EREAD;
nwatches = strtol(nwatch_str, &p, 10);
ret = onas_ddd_init_wdlt(nwatches);
if (ret) return ret;
ret = onas_ddd_init_ht(ht_size);
if (ret) return ret;
return CL_SUCCESS;
}
/**
* @brief convenience function for adding both inotify and fanotify watchpoints for a single path in one go
*/
static int onas_ddd_watch(const char *pathname, int fan_fd, uint64_t fan_mask, int in_fd, uint64_t in_mask)
{
if (!pathname || fan_fd <= 0 || in_fd <= 0) return CL_ENULLARG;
int ret = CL_SUCCESS;
size_t len = strlen(pathname);
ret = onas_ddd_watch_hierarchy(pathname, len, in_fd, in_mask, ONAS_IN);
if (ret) return ret;
ret = onas_ddd_watch_hierarchy(pathname, len, fan_fd, fan_mask, ONAS_FAN);
if (ret) return ret;
return CL_SUCCESS;
}
/**
* @brief recursively adds a hierarchy from the hash table and all watches of a single type to specified object
*
* @param pathname the directory to start watching
* @param len the size of pathname in bytes
* @param fd the fanotify or inotify file descriptor
* @param mask options for watching the path
* @param type specifies whether or not to add inotify or fanotify watchpoints and the type of fd passed
*/
static int onas_ddd_watch_hierarchy(const char *pathname, size_t len, int fd, uint64_t mask, uint32_t type)
{
if (!pathname || fd <= 0 || !type) return CL_ENULLARG;
if (type == (ONAS_IN | ONAS_FAN)) return CL_EARG;
struct onas_hnode *hnode = NULL;
struct onas_element *elem = NULL;
int wd = 0;
if (onas_ht_get(ddd_ht, pathname, len, &elem) != CL_SUCCESS) return CL_EARG;
hnode = elem->data;
if (type & ONAS_IN) {
wd = inotify_add_watch(fd, pathname, (uint32_t)mask);
if (wd < 0) return CL_EARG;
if ((uint32_t)wd >= wdlt_len) {
onas_ddd_grow_wdlt();
}
/* Link the hash node to the watch descriptor lookup table */
hnode->wd = wd;
wdlt[wd] = hnode->pathname;
hnode->watched |= ONAS_INWATCH;
} else if (type & ONAS_FAN) {
if (fanotify_mark(fd, FAN_MARK_ADD, mask, AT_FDCWD, hnode->pathname) < 0) return CL_EARG;
hnode->watched |= ONAS_FANWATCH;
} else {
return CL_EARG;
}
/* recursively watch all children */
struct onas_lnode *curr = hnode->childhead;
while (curr->next != hnode->childtail) {
curr = curr->next;
size_t size = len + strlen(curr->dirname) + 2;
char *child_path = (char *)cli_malloc(size);
if (child_path == NULL)
return CL_EMEM;
if (hnode->pathname[len - 1] == '/')
snprintf(child_path, --size, "%s%s", hnode->pathname, curr->dirname);
else
snprintf(child_path, size, "%s/%s", hnode->pathname, curr->dirname);
if (onas_ddd_watch_hierarchy(child_path, strlen(child_path), fd, mask, type)) {
return CL_EARG;
}
free(child_path);
}
return CL_SUCCESS;
}
/**
* @brief convenience function for removing both inotify and fanotify watchpoints for a single path in one go
*/
static int onas_ddd_unwatch(const char *pathname, int fan_fd, int in_fd)
{
if (!pathname || fan_fd <= 0 || in_fd <= 0) return CL_ENULLARG;
int ret = CL_SUCCESS;
size_t len = strlen(pathname);
ret = onas_ddd_unwatch_hierarchy(pathname, len, in_fd, ONAS_IN);
if (ret) return ret;
ret = onas_ddd_unwatch_hierarchy(pathname, len, fan_fd, ONAS_FAN);
if (ret) return ret;
return CL_SUCCESS;
}
/**
* @brief recursively removes a hierarchy from the hash table and drops all watches of a single type from linked objects
*
* @param pathname the directory to stop watching
* @param len the size of pathname in bytes
* @param fd the fanotify or inotify file descriptor
* @param type specifies whether or not to remove inotify or fanotify watchpoints and the type of fd passed
*/
static int onas_ddd_unwatch_hierarchy(const char *pathname, size_t len, int fd, uint32_t type)
{
if (!pathname || fd <= 0 || !type) return CL_ENULLARG;
if (type == (ONAS_IN | ONAS_FAN)) return CL_EARG;
struct onas_hnode *hnode = NULL;
struct onas_element *elem = NULL;
int wd = 0;
if (onas_ht_get(ddd_ht, pathname, len, &elem)) return CL_EARG;
hnode = elem->data;
if (type & ONAS_IN) {
wd = hnode->wd;
if (!inotify_rm_watch(fd, wd)) return CL_EARG;
/* Unlink the hash node from the watch descriptor lookup table */
hnode->wd = 0;
wdlt[wd] = NULL;
hnode->watched = ONAS_STOPWATCH;
} else if (type & ONAS_FAN) {
if (fanotify_mark(fd, FAN_MARK_REMOVE, 0, AT_FDCWD, hnode->pathname) < 0) return CL_EARG;
hnode->watched = ONAS_STOPWATCH;
} else {
return CL_EARG;
}
/* free all children recursively */
struct onas_lnode *curr = hnode->childhead;
while (curr->next != hnode->childtail) {
curr = curr->next;
size_t size = len + strlen(curr->dirname) + 2;
char *child_path = (char *)cli_malloc(size);
if (child_path == NULL)
return CL_EMEM;
if (hnode->pathname[len - 1] == '/')
snprintf(child_path, --size, "%s%s", hnode->pathname, curr->dirname);
else
snprintf(child_path, size, "%s/%s", hnode->pathname, curr->dirname);
onas_ddd_unwatch_hierarchy(child_path, strlen(child_path), fd, type);
free(child_path);
}
return CL_SUCCESS;
}
cl_error_t onas_enable_inotif_ddd(struct onas_context **ctx)
{
pthread_attr_t ddd_attr;
int32_t thread_started = 1;
if (!ctx || !*ctx) {
logg("!ClamInotif: unable to start clamonacc. (bad context)\n");
return CL_EARG;
}
if ((*ctx)->ddd_enabled) {
do {
if (pthread_attr_init(&ddd_attr)) break;
pthread_attr_setdetachstate(&ddd_attr, PTHREAD_CREATE_JOINABLE);
thread_started = pthread_create(&ddd_pid, &ddd_attr, onas_ddd_th, *ctx);
} while (0);
}
if (0 != thread_started) {
/* Failed to create thread */
logg("!ClamInotif: Unable to start dynamic directory determination ... \n");
return CL_ECREAT;
}
return CL_SUCCESS;
}
void *onas_ddd_th(void *arg)
{
struct onas_context *ctx = (struct onas_context *)arg;
sigset_t sigset;
struct sigaction act;
const struct optstruct *pt;
uint64_t in_mask = IN_ONLYDIR | IN_MOVE | IN_DELETE | IN_CREATE;
fd_set rfds;
char buf[4096];
ssize_t bread;
const struct inotify_event *event;
int ret, len, idx;
char **include_list = NULL;
char **exclude_list = NULL;
int num_exdirs, num_indirs;
cl_error_t err;
/* ignore all signals */
sigfillset(&sigset);
sigdelset(&sigset, SIGUSR1);
sigdelset(&sigset, SIGUSR2);
/* The behavior of a process is undefined after it ignores a
* SIGFPE, SIGILL, SIGSEGV, or SIGBUS signal */
sigdelset(&sigset, SIGFPE);
sigdelset(&sigset, SIGILL);
sigdelset(&sigset, SIGTERM);
sigdelset(&sigset, SIGINT);
#ifdef SIGBUS
sigdelset(&sigset, SIGBUS);
#endif
logg("*ClamInotif: starting inotify event loop ...\n");
onas_in_fd = inotify_init1(IN_NONBLOCK);
if (onas_in_fd == -1) {
logg("!ClamInotif: could not init inotify\n");
return NULL;
}
ret = onas_ddd_init(0, ONAS_DEFAULT_HT_SIZE);
if (ret) {
logg("!ClamInotif: failed to initialize DDD system\n");
return NULL;
}
logg("*ClamInotif: dynamically determining directory hierarchy...\n");
/* Add provided paths recursively. */
if (!optget(ctx->opts, "watch-list")->enabled && !optget(ctx->clamdopts, "OnAccessIncludePath")->enabled) {
logg("!ClamInotif: Please specify at least one path with OnAccessIncludePath\n");
return NULL;
}
if ((pt = optget(ctx->clamdopts, "OnAccessIncludePath"))->enabled) {
while (pt) {
if (!strcmp(pt->strarg, "/")) {
logg("!ClamInotif: not including path '%s' while DDD is enabled\n", pt->strarg);
logg("!ClamInotif: please use the OnAccessMountPath option to watch '%s'\n", pt->strarg);
pt = (struct optstruct *)pt->nextarg;
continue;
}
if (onas_ht_get(ddd_ht, pt->strarg, strlen(pt->strarg), NULL) != CL_SUCCESS) {
if (onas_ht_add_hierarchy(ddd_ht, pt->strarg)) {
logg("!ClamInotif: can't include '%s'\n", pt->strarg);
return NULL;
} else {
logg("ClamInotif: watching '%s' (and all sub-directories)\n", pt->strarg);
}
}
pt = (struct optstruct *)pt->nextarg;
}
}
if ((pt = optget(ctx->opts, "watch-list"))->enabled) {
num_indirs = 0;
err = CL_SUCCESS;
include_list = onas_get_opt_list(pt->strarg, &num_indirs, &err);
if (NULL == include_list) {
logg("!ClamInotif: could not parse include list (%d)\n", err);
return NULL;
}
idx = 0;
while (NULL != include_list[idx]) {
if (onas_ht_get(ddd_ht, include_list[idx], strlen(include_list[idx]), NULL) != CL_SUCCESS) {
if (onas_ht_add_hierarchy(ddd_ht, include_list[idx])) {
logg("!ClamInotif: can't include '%s'\n", include_list[idx]);
return NULL;
} else {
logg("ClamInotif: watching '%s' (and all sub-directories)\n", include_list[idx]);
}
}
idx++;
}
}
/* Remove provided paths recursively. */
if ((pt = optget(ctx->clamdopts, "OnAccessExcludePath"))->enabled) {
while (pt) {
size_t ptlen = strlen(pt->strarg);
if (onas_ht_get(ddd_ht, pt->strarg, ptlen, NULL) == CL_SUCCESS) {
if (onas_ht_rm_hierarchy(ddd_ht, pt->strarg, ptlen, 0)) {
logg("!ClamInotif: can't exclude '%s'\n", pt->strarg);
return NULL;
} else
logg("ClamInotif: excluding '%s' (and all sub-directories)\n", pt->strarg);
}
pt = (struct optstruct *)pt->nextarg;
}
}
if ((pt = optget(ctx->opts, "exclude-list"))->enabled) {
num_exdirs = 0;
err = CL_SUCCESS;
exclude_list = onas_get_opt_list(pt->strarg, &num_exdirs, &err);
if (NULL == exclude_list) {
logg("!ClamInotif: could not parse exclude list (%d)\n", err);
return NULL;
}
idx = 0;
while (exclude_list[idx] != NULL) {
if (onas_ht_get(ddd_ht, exclude_list[idx], strlen(exclude_list[idx]), NULL) == CL_SUCCESS) {
if (onas_ht_rm_hierarchy(ddd_ht, exclude_list[idx], strlen(exclude_list[idx]), 0)) {
logg("!ClamInotif: can't exclude '%s'\n", exclude_list[idx]);
return NULL;
} else {
logg("ClamInotif: excluding '%s' (and all sub-directories)\n", exclude_list[idx]);
}
}
idx++;
}
}
/* Watch provided paths recursively */
if ((pt = optget(ctx->clamdopts, "OnAccessIncludePath"))->enabled) {
while (pt) {
errno = 0;
size_t ptlen = strlen(pt->strarg);
if (onas_ht_get(ddd_ht, pt->strarg, ptlen, NULL) == CL_SUCCESS) {
if (err = onas_ddd_watch(pt->strarg, ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask)) {
if (0 == errno) {
logg("!ClamInotif: could not watch path '%s', %d\n ", pt->strarg, err);
} else {
logg("!ClamInotif: could not watch path '%s', %s\n", pt->strarg, strerror(errno));
if (errno == EINVAL && optget(ctx->clamdopts, "OnAccessPrevention")->enabled) {
logg("*ClamInotif: when using the OnAccessPrevention option, please ensure your kernel\n\t\t\twas compiled with CONFIG_FANOTIFY_ACCESS_PERMISSIONS set to Y\n");
kill(getpid(), SIGTERM);
}
if (errno == ENOSPC) {
logg("*ClamInotif: you likely do not have enough inotify watchpoints available ... run the follow command to increase available watchpoints and try again ...\n");
logg("*\t $ echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p\n");
kill(getpid(), SIGTERM);
}
}
}
pt = (struct optstruct *)pt->nextarg;
}
}
}
if (NULL != include_list) {
idx = 0;
while (NULL != include_list[idx]) {
errno = 0;
uint64_t ptlen = strlen(include_list[idx]);
if (onas_ht_get(ddd_ht, include_list[idx], ptlen, NULL) == CL_SUCCESS) {
if (err = onas_ddd_watch(include_list[idx], ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask)) {
if (0 == errno) {
logg("!ClamInotif: could not watch path '%s', %d\n ", include_list[idx], err);
} else {
logg("!ClamInotif: could not watch path '%s', %s\n", include_list[idx], strerror(errno));
if (errno == EINVAL && optget(ctx->clamdopts, "OnAccessPrevention")->enabled) {
logg("*ClamInotif: when using the OnAccessPrevention option, please ensure your kernel\n\t\t\twas compiled with CONFIG_FANOTIFY_ACCESS_PERMISSIONS set to Y\n");
kill(getpid(), SIGTERM);
}
if (errno == ENOSPC) {
logg("*ClamInotif: you likely do not have enough inotify watchpoints available ... run the follow command to increase available watchpoints and try again ...\n");
logg("*\t $ echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p\n");
kill(getpid(), SIGTERM);
}
}
}
}
idx++;
}
}
if (optget(ctx->clamdopts, "OnAccessExtraScanning")->enabled) {
logg("ClamInotif: extra scanning on inotify events enabled\n");
}
FD_ZERO(&rfds);
FD_SET(onas_in_fd, &rfds);
pthread_cleanup_push(onas_ddd_exit, NULL);
while (1) {
do {
ret = select(onas_in_fd + 1, &rfds, NULL, NULL, NULL);
} while (ret == -1 && errno == EINTR);
while ((bread = read(onas_in_fd, buf, sizeof(buf))) > 0) {
pthread_testcancel();
/* Handle events. */
int wd;
char *p = buf;
const char *path = NULL;
const char *child = NULL;
for (; p < buf + bread; p += sizeof(struct inotify_event) + event->len) {
event = (const struct inotify_event *)p;
wd = event->wd;
path = wdlt[wd];
child = event->name;
if (path == NULL) {
logg("*ClamInotif: watch descriptor not found in lookup table ... skipping\n");
continue;
}
len = strlen(path);
size_t size = strlen(child) + len + 2;
char *child_path = (char *)cli_malloc(size);
if (child_path == NULL) {
logg("*ClamInotif: could not allocate space for child path ... aborting\n");
return NULL;
}
if (path[len - 1] == '/') {
snprintf(child_path, --size, "%s%s", path, child);
} else {
snprintf(child_path, size, "%s/%s", path, child);
}
if (event->mask & IN_DELETE) {
onas_ddd_handle_in_delete(ctx, path, child_path, event, wd);
} else if (event->mask & IN_MOVED_FROM) {
onas_ddd_handle_in_moved_from(ctx, path, child_path, event, wd);
} else if (event->mask & IN_CREATE) {
onas_ddd_handle_in_create(ctx, path, child_path, event, wd, in_mask);
} else if (event->mask & IN_MOVED_TO) {
onas_ddd_handle_in_moved_to(ctx, path, child_path, event, wd, in_mask);
}
free(child_path);
child_path = NULL;
}
}
}
logg("*ClamInotif: exiting inotify event thread\n");
pthread_cleanup_pop(1);
return NULL;
}
static void onas_ddd_handle_in_delete(struct onas_context *ctx,
const char *path, const char *child_path, const struct inotify_event *event, int wd)
{
struct stat s;
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) return;
if (!(event->mask & IN_ISDIR)) return;
logg("*ClamInotif: DELETE - removing %s from %s with wd:%d\n", child_path, path, wd);
onas_ddd_unwatch(child_path, ctx->fan_fd, onas_in_fd);
onas_ht_rm_hierarchy(ddd_ht, child_path, strlen(child_path), 0);
return;
}
static void onas_ddd_handle_in_moved_from(struct onas_context *ctx,
const char *path, const char *child_path, const struct inotify_event *event, int wd)
{
struct stat s;
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) return;
if (!(event->mask & IN_ISDIR)) return;
logg("*ClamInotif: MOVED_FROM - removing %s from %s with wd:%d\n", child_path, path, wd);
onas_ddd_unwatch(child_path, ctx->fan_fd, onas_in_fd);
onas_ht_rm_hierarchy(ddd_ht, child_path, strlen(child_path), 0);
return;
}
static void onas_ddd_handle_in_create(struct onas_context *ctx,
const char *path, const char *child_path, const struct inotify_event *event, int wd, uint64_t in_mask)
{
struct stat s;
if (optget(ctx->clamdopts, "OnAccessExtraScanning")->enabled) {
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) {
onas_ddd_handle_extra_scanning(ctx, child_path, ONAS_SCTH_B_FILE);
} else if (event->mask & IN_ISDIR) {
logg("*ClamInotif: CREATE - adding %s to %s with wd:%d\n", child_path, path, wd);
onas_ddd_handle_extra_scanning(ctx, child_path, ONAS_SCTH_B_DIR);
onas_ht_add_hierarchy(ddd_ht, child_path);
onas_ddd_watch(child_path, ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask);
}
} else {
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) return;
if (!(event->mask & IN_ISDIR)) return;
logg("*ClamInotif: MOVED_TO - adding %s to %s with wd:%d\n", child_path, path, wd);
onas_ht_add_hierarchy(ddd_ht, child_path);
onas_ddd_watch(child_path, ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask);
}
return;
}
static void onas_ddd_handle_in_moved_to(struct onas_context *ctx,
const char *path, const char *child_path, const struct inotify_event *event, int wd, uint64_t in_mask)
{
struct stat s;
if (optget(ctx->clamdopts, "OnAccessExtraScanning")->enabled) {
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) {
onas_ddd_handle_extra_scanning(ctx, child_path, ONAS_SCTH_B_FILE);
} else if (event->mask & IN_ISDIR) {
logg("*ClamInotif: MOVED_TO - adding %s to %s with wd:%d\n", child_path, path, wd);
onas_ddd_handle_extra_scanning(ctx, child_path, ONAS_SCTH_B_DIR);
onas_ht_add_hierarchy(ddd_ht, child_path);
onas_ddd_watch(child_path, ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask);
}
} else {
if (stat(child_path, &s) == 0 && S_ISREG(s.st_mode)) return;
if (!(event->mask & IN_ISDIR)) return;
logg("*ClamInotif: MOVED_TO - adding %s to %s with wd:%d\n", child_path, path, wd);
onas_ht_add_hierarchy(ddd_ht, child_path);
onas_ddd_watch(child_path, ctx->fan_fd, ctx->fan_mask, onas_in_fd, in_mask);
}
return;
}
static void onas_ddd_handle_extra_scanning(struct onas_context *ctx, const char *pathname, int extra_options)
{
struct onas_scan_event *event_data;
event_data = (struct onas_scan_event *)cli_calloc(1, sizeof(struct onas_scan_event));
if (NULL == event_data) {
logg("!ClamInotif: could not allocate memory for event data struct\n");
}
/* general mapping */
onas_map_context_info_to_event_data(ctx, &event_data);
event_data->pathname = cli_strdup(pathname);
event_data->bool_opts |= ONAS_SCTH_B_SCAN;
/* inotify specific stuffs */
event_data->bool_opts |= ONAS_SCTH_B_INOTIFY;
extra_options &ONAS_SCTH_B_FILE ? event_data->bool_opts |= ONAS_SCTH_B_FILE : extra_options;
extra_options &ONAS_SCTH_B_DIR ? event_data->bool_opts |= ONAS_SCTH_B_DIR : extra_options;
logg("*ClamInotif: attempting to feed consumer queue\n");
/* feed consumer queue */
if (CL_SUCCESS != onas_queue_event(event_data)) {
logg("!ClamInotif: error occurred while feeding consumer queue extra event ... continuing ...\n");
return;
}
return;
}
static void onas_ddd_exit(void *arg)
{
logg("*ClamInotif: onas_ddd_exit()\n");
if (onas_in_fd) {
close(onas_in_fd);
}
onas_in_fd = 0;
if (ddd_ht) {
onas_free_ht(ddd_ht);
}
ddd_ht = NULL;
if (wdlt) {
free(wdlt);
}
wdlt = NULL;
logg("ClamInotif: stopped\n");
}
#endif