[LTP] [PATCH 1/2] kernel/fs/fs-notify: fsnotify stress tests
Murphy Zhou
jencce.kernel@gmail.com
Tue Jan 25 09:30:49 CET 2022
Hi Amir,
On Tue, Jan 25, 2022 at 09:29:47AM +0200, Amir Goldstein wrote:
> On Tue, Jan 25, 2022 at 4:47 AM Murphy Zhou <jencce.kernel@gmail.com> wrote:
> >
> > Exercise fsnotify and inotify interfaces while IO going on.
>
> Hi Murphy,
>
> It's worth documenting in main test script that this test
> was created as a regression test for commit
> 4396a73115fc fsnotify: fix sb_connectors leak
Ah, the tests were created for the goal of stress test. This leak
was one of the bugs that this test found.
>
> Can you elaborate a bit more about the expectation from this test.
> I do not see any error checking in the main script.
Sure. Will explain more.
> Is any perror supposed to fail the test?
No.
> Is its purpose to catch kernel dmesg splats of all sorts?
Not needed.
My intend is to use these interfaces insanely a while, if kernel
does not panic or hang, pass. This test is not checking *notify
function which has already been covered.
>
> In your original post you wrote that bug makes the test hang:
> https://lore.kernel.org/linux-fsdevel/20210907063338.ycaw6wvhzrfsfdlp@xzhoux.usersys.redhat.com/
>
> If that is the case, better mention this to the LTP maintainers.
Sure. Thanks for reviewing!
Murphy
>
> Thanks,
> Amir.
>
>
>
>
> >
> > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > ---
> > testcases/kernel/fs/fs-notify/Makefile | 18 ++
> > .../fs/fs-notify/fanotify_flush_stress.c | 52 ++++
> > .../fs/fs-notify/fanotify_init_stress.c | 32 +++
> > .../fs/fs-notify/fanotify_mark_stress.c | 58 +++++
> > .../kernel/fs/fs-notify/fanotify_watch.c | 244 ++++++++++++++++++
> > testcases/kernel/fs/fs-notify/freadfile.c | 27 ++
> > .../kernel/fs/fs-notify/fsnotify-stress.sh | 64 +++++
> > testcases/kernel/fs/fs-notify/fwritefile.c | 27 ++
> > .../fs/fs-notify/inotify_add_rm_stress.c | 36 +++
> > .../kernel/fs/fs-notify/inotify_init_stress.c | 22 ++
> > .../fs/fs-notify/inotify_inmodify_stress.c | 17 ++
> > testcases/kernel/fs/fs-notify/inotify_watch.c | 98 +++++++
> > testcases/kernel/fs/fs-notify/readfile.c | 28 ++
> > testcases/kernel/fs/fs-notify/rw_files.sh | 90 +++++++
> > testcases/kernel/fs/fs-notify/writefile.c | 28 ++
> > 15 files changed, 841 insertions(+)
> > create mode 100644 testcases/kernel/fs/fs-notify/Makefile
> > create mode 100644 testcases/kernel/fs/fs-notify/fanotify_flush_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/fanotify_init_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/fanotify_mark_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/fanotify_watch.c
> > create mode 100644 testcases/kernel/fs/fs-notify/freadfile.c
> > create mode 100755 testcases/kernel/fs/fs-notify/fsnotify-stress.sh
> > create mode 100644 testcases/kernel/fs/fs-notify/fwritefile.c
> > create mode 100644 testcases/kernel/fs/fs-notify/inotify_add_rm_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/inotify_init_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/inotify_inmodify_stress.c
> > create mode 100644 testcases/kernel/fs/fs-notify/inotify_watch.c
> > create mode 100644 testcases/kernel/fs/fs-notify/readfile.c
> > create mode 100755 testcases/kernel/fs/fs-notify/rw_files.sh
> > create mode 100644 testcases/kernel/fs/fs-notify/writefile.c
> >
> > diff --git a/testcases/kernel/fs/fs-notify/Makefile b/testcases/kernel/fs/fs-notify/Makefile
> > new file mode 100644
> > index 000000000..328783942
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/Makefile
> > @@ -0,0 +1,18 @@
> > +#
> > +# kernel/fs/fs-notify testcases Makefile.
> > +#
> > +
> > +top_srcdir ?= ../../../..
> > +
> > +include $(top_srcdir)/include/mk/testcases.mk
> > +
> > +BINARIES:=fanotify_flush_stress fanotify_init_stress \
> > +fanotify_mark_stress fanotify_watch inotify_watch \
> > +inotify_add_rm_stress inotify_init_stress inotify_inmodify_stress\
> > +writefile freadfile fwritefile readfile
> > +
> > +INSTALL_TARGETS := fsnotify-stress.sh $(BINARIES) rw_files.sh
> > +
> > +MAKE_TARGETS := $(BINARIES)
> > +
> > +include $(top_srcdir)/include/mk/generic_leaf_target.mk
> > diff --git a/testcases/kernel/fs/fs-notify/fanotify_flush_stress.c b/testcases/kernel/fs/fs-notify/fanotify_flush_stress.c
> > new file mode 100644
> > index 000000000..493acfb56
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fanotify_flush_stress.c
> > @@ -0,0 +1,52 @@
> > +#define _GNU_SOURCE /* Needed to get O_LARGEFILE definition */
> > +#include <errno.h>
> > +#include <fcntl.h>
> > +#include <limits.h>
> > +#include <poll.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <sys/fanotify.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + char buf;
> > + int fd;
> > +
> > + /* Create the file descriptor for accessing the fanotify API */
> > + fd = fanotify_init(FAN_CLOEXEC | FAN_CLASS_CONTENT | FAN_NONBLOCK,
> > + O_RDONLY | O_LARGEFILE);
> > + if (fd == -1) {
> > + perror("fanotify_init");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Loop marking all kinds of events and flush */
> > + while (1) {
> > +
> > + if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
> > + FAN_ACCESS | FAN_MODIFY | FAN_OPEN_PERM | FAN_CLOSE |
> > + FAN_OPEN | FAN_ACCESS_PERM | FAN_ONDIR |
> > + FAN_EVENT_ON_CHILD, -1, argv[1]) == -1)
> > +
> > + perror("fanotify_mark add");
> > +
> > + if (fanotify_mark(fd, FAN_MARK_FLUSH | FAN_MARK_MOUNT,
> > + 0, -1, argv[1]) == -1)
> > + perror("fanotify_mark flush mount");
> > +
> > + if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
> > + FAN_ACCESS | FAN_MODIFY | FAN_OPEN_PERM | FAN_CLOSE |
> > + FAN_OPEN | FAN_ACCESS_PERM | FAN_ONDIR |
> > + FAN_EVENT_ON_CHILD, -1, argv[1]) == -1)
> > +
> > + perror("fanotify_mark add");
> > +
> > + if (fanotify_mark(fd, FAN_MARK_FLUSH, 0, -1, argv[1]) == -1)
> > + perror("fanotify_mark flush");
> > + }
> > +
> > + close(fd);
> > + exit(EXIT_SUCCESS);
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/fanotify_init_stress.c b/testcases/kernel/fs/fs-notify/fanotify_init_stress.c
> > new file mode 100644
> > index 000000000..d11924b57
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fanotify_init_stress.c
> > @@ -0,0 +1,32 @@
> > +#define _GNU_SOURCE /* Needed to get O_LARGEFILE definition */
> > +#include <errno.h>
> > +#include <stdio.h>
> > +#include <unistd.h>
> > +#include <fcntl.h>
> > +#include <stdlib.h>
> > +#include <sys/fanotify.h>
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + char buf;
> > + int fd;
> > + while (1) {
> > +
> > + /* Create the file descriptor for accessing the fanotify API */
> > + fd = fanotify_init(FAN_CLOEXEC | FAN_CLASS_CONTENT |
> > + FAN_NONBLOCK, O_RDONLY | O_LARGEFILE);
> > + if (fd == -1)
> > + perror("fanotify_init");
> > +
> > + if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
> > + FAN_ACCESS | FAN_MODIFY | FAN_OPEN_PERM |
> > + FAN_CLOSE | FAN_OPEN | FAN_ACCESS_PERM |
> > + FAN_ONDIR | FAN_EVENT_ON_CHILD, -1,
> > + argv[1]) == -1)
> > + perror("fanotify_mark");
> > +
> > + close(fd);
> > + }
> > +
> > + exit(EXIT_SUCCESS);
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/fanotify_mark_stress.c b/testcases/kernel/fs/fs-notify/fanotify_mark_stress.c
> > new file mode 100644
> > index 000000000..7f648e103
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fanotify_mark_stress.c
> > @@ -0,0 +1,58 @@
> > +#define _GNU_SOURCE /* Needed to get O_LARGEFILE definition */
> > +#include <errno.h>
> > +#include <fcntl.h>
> > +#include <limits.h>
> > +#include <poll.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <sys/fanotify.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +
> > +void add_mark(int fd, uint64_t mask, char *path)
> > +{
> > + if (fanotify_mark(fd, FAN_MARK_ADD, mask, -1, path) == -1)
> > + perror("fanotify_mark add");
> > +}
> > +
> > +void remove_mark(int fd, uint64_t mask, char *path)
> > +{
> > + if (fanotify_mark(fd, FAN_MARK_REMOVE, mask, -1, path) == -1)
> > + perror("fanotify_mark remove");
> > +}
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + char buf;
> > + int fd;
> > + /* Create the file descriptor for accessing the fanotify API */
> > + fd = fanotify_init(FAN_CLOEXEC | FAN_CLASS_CONTENT | FAN_NONBLOCK,
> > + O_RDONLY | O_LARGEFILE);
> > + if (fd == -1) {
> > + perror("fanotify_init");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Loop marking all kinds of events */
> > + while (1) {
> > + add_mark(fd, FAN_ACCESS, argv[1]);
> > + remove_mark(fd, FAN_ACCESS, argv[1]);
> > + add_mark(fd, FAN_MODIFY, argv[1]);
> > + remove_mark(fd, FAN_MODIFY, argv[1]);
> > + add_mark(fd, FAN_OPEN_PERM, argv[1]);
> > + remove_mark(fd, FAN_OPEN_PERM, argv[1]);
> > + add_mark(fd, FAN_CLOSE, argv[1]);
> > + remove_mark(fd, FAN_CLOSE, argv[1]);
> > + add_mark(fd, FAN_OPEN, argv[1]);
> > + remove_mark(fd, FAN_OPEN, argv[1]);
> > + add_mark(fd, FAN_ACCESS_PERM, argv[1]);
> > + remove_mark(fd, FAN_ACCESS_PERM, argv[1]);
> > + add_mark(fd, FAN_ONDIR, argv[1]);
> > + remove_mark(fd, FAN_ONDIR, argv[1]);
> > + add_mark(fd, FAN_EVENT_ON_CHILD, argv[1]);
> > + remove_mark(fd, FAN_EVENT_ON_CHILD, argv[1]);
> > + }
> > +
> > + close(fd);
> > + exit(EXIT_SUCCESS);
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/fanotify_watch.c b/testcases/kernel/fs/fs-notify/fanotify_watch.c
> > new file mode 100644
> > index 000000000..1028e0e30
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fanotify_watch.c
> > @@ -0,0 +1,244 @@
> > +/* Example in man 7 fanotify */
> > +
> > +#define _GNU_SOURCE /* Needed to get O_LARGEFILE definition */
> > +#include <errno.h>
> > +#include <fcntl.h>
> > +#include <limits.h>
> > +#include <poll.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <sys/fanotify.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +
> > +/* get comm for pid from /proc/pid/comm */
> > +static char * get_comm_pid(unsigned int pid)
> > +{
> > + char * proc_name;
> > + char * comm;
> > + int comm_fd, cnt;
> > +
> > + proc_name = (char *)malloc(50);
> > + if (proc_name != NULL)
> > + sprintf(proc_name, "/proc/%u/comm\0", pid);
> > + else
> > + return NULL;
> > +
> > + comm = (char *)malloc(50);
> > + if (comm != NULL)
> > + memset(comm, 0, 50);
> > + else
> > + return NULL;
> > +
> > + comm_fd = open(proc_name, O_RDONLY);
> > + if (comm_fd != -1) {
> > + cnt = read(comm_fd, comm, 50);
> > + if (cnt != -1) {
> > + comm[cnt] = '\0';
> > + close(comm_fd);
> > + return comm;
> > + }
> > + close(comm_fd);
> > + }
> > +
> > + return NULL;
> > +}
> > +
> > +/* Read all available fanotify events from the file descriptor 'fd' */
> > +
> > +static void handle_events(int fd)
> > +{
> > + const struct fanotify_event_metadata *metadata;
> > + struct fanotify_event_metadata buf[200];
> > + ssize_t len;
> > + char path[PATH_MAX];
> > + ssize_t path_len;
> > + char procfd_path[PATH_MAX];
> > + struct fanotify_response response;
> > +
> > + /* Loop while events can be read from fanotify file descriptor */
> > + for(;;) {
> > +
> > + /* Read some events */
> > + len = read(fd, (void *) &buf, sizeof(buf));
> > + if (len == -1 && errno != EAGAIN) {
> > + perror("read");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Check if end of available data reached */
> > + if (len <= 0)
> > + break;
> > +
> > + /* Point to the first event in the buffer */
> > + metadata = buf;
> > +
> > + /* Loop over all events in the buffer */
> > + while (FAN_EVENT_OK(metadata, len)) {
> > +
> > + /* Check that run-time and compile-time structures match */
> > +
> > + if (metadata->vers != FANOTIFY_METADATA_VERSION) {
> > + fprintf(stderr,
> > + "Mismatch of fanotify metadata version.\n");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* metadata->fd contains either FAN_NOFD, indicating a
> > + queue overflow, or a file descriptor (a nonnegative
> > + integer). Here, we simply ignore queue overflow. */
> > +
> > + if (metadata->fd >= 0) {
> > +
> > + /* Handle open permission event */
> > + if (metadata->mask & FAN_OPEN_PERM) {
> > + printf("FAN_OPEN_PERM: ");
> > +
> > + /* Allow file to be opened */
> > + response.fd = metadata->fd;
> > + response.response = FAN_ALLOW;
> > + write(fd, &response,
> > + sizeof(struct fanotify_response));
> > + }
> > +
> > + /* Handle access permission event */
> > + if (metadata->mask & FAN_ACCESS_PERM) {
> > + printf("FAN_ACCESS_PERM: ");
> > +
> > + /* Allow file to be accessed */
> > + response.fd = metadata->fd;
> > + response.response = FAN_ALLOW;
> > + write(fd, &response,
> > + sizeof(struct fanotify_response));
> > + }
> > +
> > + /* Handle closing of writable file event */
> > + if (metadata->mask & FAN_CLOSE_WRITE)
> > + printf("FAN_CLOSE_WRITE: ");
> > +
> > + /* Handle closing of not writable file event */
> > + if (metadata->mask & FAN_CLOSE_NOWRITE)
> > + printf("FAN_CLOSE_NOWRITE: ");
> > +
> > + /* Handle modify file event */
> > + if (metadata->mask & FAN_MODIFY)
> > + printf("FAN_MODIFY: ");
> > +
> > + /* Handle open event */
> > + if (metadata->mask & FAN_OPEN)
> > + printf("FAN_OPEN: ");
> > +
> > + /* Handle access event */
> > + if (metadata->mask & FAN_ACCESS)
> > + printf("FAN_ACCESS: ");
> > +
> > + /* Handle access event */
> > + if (metadata->mask & FAN_ONDIR)
> > + printf("FAN_ONDIR: ");
> > +
> > + /* Handle access event */
> > + if (metadata->mask & FAN_EVENT_ON_CHILD)
> > + printf("FAN_EVENT_ON_CHILD: ");
> > +
> > + /* Retrieve/print the accessed file path*/
> > + snprintf(procfd_path, sizeof(procfd_path),
> > + "/proc/self/fd/%d", metadata->fd);
> > + path_len = readlink(procfd_path, path,
> > + sizeof(path) - 1);
> > + if (path_len == -1) {
> > + perror("readlink");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + path[path_len] = '\0';
> > + printf("File %s.\t\t Comm %s", path,
> > + get_comm_pid(metadata->pid));
> > +
> > + /* Close the file descriptor of the event */
> > +
> > + close(metadata->fd);
> > + }
> > +
> > + /* Advance to next event */
> > + metadata = FAN_EVENT_NEXT(metadata, len);
> > + }
> > + }
> > +}
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + char buf;
> > + int fd, poll_num;
> > + nfds_t nfds;
> > + struct pollfd fds[2];
> > + FILE *f;
> > +#if 0
> > + /* Check mount point is supplied */
> > + if (argc != 2) {
> > + fprintf(stderr, "Usage: %s MOUNT\n", argv[0]);
> > + exit(EXIT_FAILURE);
> > + }
> > +#endif
> > + printf("%s on %s\n", argv[0], argv[1]);
> > + fflush(stdout);
> > + f = freopen("fanotify.log", "w+", stdout);
> > + if (f == NULL) {
> > + perror("freopen");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Create the file descriptor for accessing the fanotify API */
> > + fd = fanotify_init(FAN_CLOEXEC | FAN_CLASS_CONTENT | FAN_NONBLOCK,
> > + O_RDONLY | O_LARGEFILE);
> > + if (fd == -1) {
> > + perror("fanotify_init");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Mark the mount for:
> > + - permission events before opening files
> > + - notification events after closing a write-enabled
> > + file descriptor */
> > + if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
> > + FAN_ACCESS | FAN_MODIFY | FAN_OPEN_PERM |
> > + FAN_CLOSE | FAN_OPEN | FAN_ACCESS_PERM |
> > + FAN_ONDIR | FAN_EVENT_ON_CHILD,
> > + -1, argv[1]) == -1) {
> > +
> > + perror("fanotify_mark");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + /* Prepare for polling */
> > + nfds = 1;
> > +
> > + /* Fanotify input */
> > + fds[0].fd = fd;
> > + fds[0].events = POLLIN;
> > +
> > + /* This is the loop to wait for incoming events */
> > + printf("Listening for events.\n");
> > + while (1) {
> > + poll_num = poll(fds, nfds, -1);
> > + if (poll_num == -1) {
> > + if (errno == EINTR) /* Interrupted by a signal */
> > + continue; /* Restart poll() */
> > +
> > + perror("poll"); /* Unexpected error */
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + if (poll_num > 0) {
> > +
> > + if (fds[0].revents & POLLIN) {
> > +
> > + /* Fanotify events are available */
> > + handle_events(fd);
> > + }
> > + }
> > + }
> > +
> > + fclose(f);
> > + printf("Listening for events stopped.\n");
> > + exit(EXIT_SUCCESS);
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/freadfile.c b/testcases/kernel/fs/fs-notify/freadfile.c
> > new file mode 100644
> > index 000000000..24bf76bcd
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/freadfile.c
> > @@ -0,0 +1,27 @@
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +
> > +int main(int argc, char **argv)
> > +{
> > + int fd;
> > + char buf[BUFSIZ];
> > + FILE *f;
> > +
> > + memset(buf, 1, BUFSIZ);
> > + while(1) {
> > + f = fopen(argv[1], "r+");
> > + if (f == NULL) {
> > + perror("freadfile fopen");
> > + exit(EXIT_FAILURE);
> > + }
> > + fread(buf, sizeof(char), BUFSIZ, f);
> > + usleep(1);
> > + }
> > + fclose(f);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/fsnotify-stress.sh b/testcases/kernel/fs/fs-notify/fsnotify-stress.sh
> > new file mode 100755
> > index 000000000..d6fd5482b
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fsnotify-stress.sh
> > @@ -0,0 +1,64 @@
> > +#!/bin/bash
> > +
> > +export TIMEOUT=10
> > +
> > +STRESSES="fanotify_flush_stress fanotify_init_stress \
> > +fanotify_mark_stress fanotify_watch inotify_watch \
> > +inotify_add_rm_stress inotify_init_stress inotify_inmodify_stress"
> > +IO_OPES="writefile freadfile fwritefile readfile"
> > +
> > +NR_CPUS=$(grep -c processor /proc/cpuinfo)
> > +[ $NR_CPUS -lt 4 ] && NR_CPUS=4
> > +
> > +function cleanup_processes()
> > +{
> > + while ps -eo pid,comm | \
> > + grep -q -E "fanotify|inotify|rw_files|readfile|writefile" ; do
> > + killall rw_files.sh $STRESSES $IO_OPES > /dev/null 2>&1
> > + sleep 1
> > + done
> > +}
> > +
> > +function cleanup()
> > +{
> > + sleep 3 # waiting possible unfinished processes
> > + cleanup_processes
> > + rm -f $STRESSES $IO_OPES fanotify.log inotify.log tmp
> > + cd /
> > + sync
> > +}
> > +
> > +function run_stress()
> > +{
> > + local i j rcnt=0
> > + echo -e "* CPU count: $NR_CPUS"
> > + echo -e "* TIMEOUT for each subcase: $TIMEOUT"
> > +
> > + echo -e "* Starting fsnotify stress on directory and regular file"
> > + touch $TMPDIR/testfile
> > + >tmp
> > + for i in $STRESSES $IO_OPES rw_files.sh; do
> > + for j in $STRESSES ; do
> > + [ "$i" == "$j" ] && continue
> > + # skip duplicate combinations
> > + grep -w $j tmp | grep -qw $i && continue
> > + echo -e "* Starting $i and $j, rcnt $rcnt"
> > + ./$i $TMPDIR $TIMEOUT > /dev/null 2>&1 &
> > + ./$i $TMPDIR/testfile $TIMEOUT > /dev/null 2>&1 &
> > + ./$j $TMPDIR $TIMEOUT > /dev/null 2>&1 &
> > + ./$j $TMPDIR/testfile $TIMEOUT > /dev/null 2>&1 &
> > + sleep $TIMEOUT
> > + cleanup_processes
> > + echo -e "$i $j" >> tmp
> > + ((rcnt++))
> > + done
> > + done
> > +}
> > +
> > +trap "cleanup; exit;" 2
> > +
> > +echo "***** Starting tests *****"
> > +run_stress
> > +
> > +echo -e "\n***** Cleanup fanotify inotify device *****"
> > +cleanup
> > diff --git a/testcases/kernel/fs/fs-notify/fwritefile.c b/testcases/kernel/fs/fs-notify/fwritefile.c
> > new file mode 100644
> > index 000000000..a2956d60b
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/fwritefile.c
> > @@ -0,0 +1,27 @@
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +
> > +int main(int argc, char **argv)
> > +{
> > + int fd;
> > + char buf[BUFSIZ];
> > + FILE *f;
> > +
> > + memset(buf, 1, BUFSIZ);
> > + while(1) {
> > + f = fopen(argv[1], "w+");
> > + if (f == NULL) {
> > + perror("fwritefile fopen");
> > + exit(EXIT_FAILURE);
> > + }
> > + fwrite(buf, sizeof(char), BUFSIZ, f);
> > + usleep(1);
> > + }
> > + fclose(f);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/inotify_add_rm_stress.c b/testcases/kernel/fs/fs-notify/inotify_add_rm_stress.c
> > new file mode 100644
> > index 000000000..e88fc088e
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/inotify_add_rm_stress.c
> > @@ -0,0 +1,36 @@
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +#include <unistd.h>
> > +#include <stdlib.h>
> > +#include <dirent.h>
> > +#include <stdio.h>
> > +#include <sys/inotify.h>
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + int notify_fd;
> > + int wd, ret;
> > +
> > + notify_fd = inotify_init1(IN_CLOEXEC);
> > + if (notify_fd == -1) {
> > + perror("inotify_init1");
> > + return -1;
> > + }
> > +
> > + while (1) {
> > + wd = inotify_add_watch(notify_fd, argv[1],
> > + IN_ACCESS | IN_ATTRIB | IN_CLOSE_WRITE |
> > + IN_CLOSE_NOWRITE | IN_CREATE | IN_DELETE |
> > + IN_DELETE_SELF | IN_MODIFY | IN_MOVE_SELF |
> > + IN_MOVED_FROM | IN_MOVED_TO | IN_OPEN);
> > + if (wd < 0)
> > + perror("inotify_add_watch");
> > +
> > + ret = inotify_rm_watch(notify_fd, wd);
> > + if (ret < 0)
> > + perror("inotify_rm_watch");
> > + }
> > + close(notify_fd);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/inotify_init_stress.c b/testcases/kernel/fs/fs-notify/inotify_init_stress.c
> > new file mode 100644
> > index 000000000..62cb7c2e6
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/inotify_init_stress.c
> > @@ -0,0 +1,22 @@
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +#include <unistd.h>
> > +#include <stdlib.h>
> > +#include <dirent.h>
> > +#include <stdio.h>
> > +#include <sys/inotify.h>
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + int notify_fd;
> > + int wd;
> > +
> > + while (1) {
> > + notify_fd = inotify_init1(IN_CLOEXEC);
> > + if (notify_fd == -1)
> > + perror("inotify_init1");
> > + close(notify_fd);
> > + }
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/inotify_inmodify_stress.c b/testcases/kernel/fs/fs-notify/inotify_inmodify_stress.c
> > new file mode 100644
> > index 000000000..546ccb76f
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/inotify_inmodify_stress.c
> > @@ -0,0 +1,17 @@
> > +#include <sys/inotify.h>
> > +#include <stdio.h>
> > +#include <unistd.h>
> > +
> > +/*
> > + * Calls inotify_rm_watch in a loop.
> > + */
> > +int main(int argc, char **argv)
> > +{
> > + int fd = inotify_init();
> > + while (1) {
> > + int wd = inotify_add_watch(fd, argv[1], IN_MODIFY);
> > + inotify_rm_watch(fd, wd);
> > + }
> > + close(fd);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/inotify_watch.c b/testcases/kernel/fs/fs-notify/inotify_watch.c
> > new file mode 100644
> > index 000000000..b4b908b6b
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/inotify_watch.c
> > @@ -0,0 +1,98 @@
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +#include <unistd.h>
> > +#include <stdlib.h>
> > +#include <dirent.h>
> > +#include <stdio.h>
> > +#include <sys/inotify.h>
> > +
> > +int main(int argc, char *argv[])
> > +{
> > + int notify_fd;
> > + int wd, ret;
> > + char *buf;
> > + FILE *f;
> > +
> > + f = freopen("inotify.log", "w+", stdout);
> > + if (f == NULL) {
> > + perror("freopen");
> > + exit(EXIT_FAILURE);
> > + }
> > +
> > + buf = malloc(sizeof(struct inotify_event) + NAME_MAX + 1);
> > + if (buf == NULL) {
> > + perror("malloc");
> > + return -1;
> > + }
> > +
> > + notify_fd = inotify_init1(IN_CLOEXEC);
> > + if (notify_fd == -1) {
> > + perror("inotify_init1");
> > + return -1;
> > + }
> > +
> > + wd = inotify_add_watch(notify_fd, argv[1],
> > + IN_ACCESS | IN_ATTRIB | IN_CLOSE_WRITE | IN_CLOSE_NOWRITE |
> > + IN_CREATE | IN_DELETE | IN_DELETE_SELF | IN_MODIFY |
> > + IN_MOVE_SELF | IN_MOVED_FROM | IN_MOVED_TO | IN_OPEN);
> > +
> > + if (wd < 0) {
> > + perror("inotify_add_watch");
> > + return -1;
> > + }
> > +
> > + while (ret = read(notify_fd, buf, NAME_MAX) != -1) {
> > + struct inotify_event *ip = (struct inotify_event *)buf;
> > + printf("name %s event ", ip->name);
> > + switch (ip->mask) {
> > + case IN_ACCESS:
> > + printf("access\n");
> > + break;
> > + case IN_ATTRIB:
> > + printf("attrib\n");
> > + break;
> > + case IN_CLOSE_WRITE:
> > + printf("close write\n");
> > + break;
> > + case IN_CLOSE_NOWRITE:
> > + printf("close nowrite\n");
> > + break;
> > + case IN_CREATE:
> > + printf("create\n");
> > + break;
> > + case IN_DELETE:
> > + printf("delete\n");
> > + break;
> > + case IN_DELETE_SELF:
> > + printf("deleteself\n");
> > + break;
> > + case IN_MODIFY:
> > + printf("modify\n");
> > + break;
> > + case IN_MOVE_SELF:
> > + printf("move self\n");
> > + break;
> > + case IN_MOVED_FROM:
> > + printf("move from\n");
> > + break;
> > + case IN_MOVED_TO:
> > + printf("move to\n");
> > + break;
> > + case IN_OPEN:
> > + printf("open\n");
> > + break;
> > + default:
> > + printf("\n");
> > + break;
> > + };
> > + }
> > +
> > + ret = inotify_rm_watch(notify_fd, wd);
> > + if (ret < 0)
> > + perror("inotify_rm_watch");
> > +
> > + fclose(f);
> > + close(notify_fd);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/readfile.c b/testcases/kernel/fs/fs-notify/readfile.c
> > new file mode 100644
> > index 000000000..2ab1a3694
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/readfile.c
> > @@ -0,0 +1,28 @@
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +
> > +int main(int argc, char **argv)
> > +{
> > + int fd, ret;
> > + char buf[BUFSIZ];
> > +
> > + memset(buf, 1, BUFSIZ);
> > + while (1) {
> > + fd = open(argv[1], O_RDWR);
> > + if (fd == -1) {
> > + perror("readfile open");
> > + exit(EXIT_FAILURE);
> > + }
> > + ret = read(fd, buf, BUFSIZ);
> > + if (ret == -1)
> > + perror("readfile read");
> > + usleep(1);
> > + }
> > + close(fd);
> > + return 0;
> > +}
> > diff --git a/testcases/kernel/fs/fs-notify/rw_files.sh b/testcases/kernel/fs/fs-notify/rw_files.sh
> > new file mode 100755
> > index 000000000..bb3387160
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/rw_files.sh
> > @@ -0,0 +1,90 @@
> > +#!/bin/bash
> > +
> > +TDIR=$1
> > +TIMEO=$2
> > +
> > +[ -z "$TDIR" ] && TDIR=/tmp/
> > +[ -d $TDIR ] || TDIR=/tmp/
> > +[ -z "$TIMEO" ] && TIMEO=1m
> > +
> > +[ ! -d $TDIR ] && exit
> > +
> > +function add_files()
> > +{
> > + local i=0
> > +
> > + while true ; do
> > +
> > + touch f-$i
> > + ln -s f-$i f-$i-sym
> > + ln f-$i f-$i-hdl
> > +
> > + mkdir d-$i
> > +
> > + mknod c-$i c 1 2
> > + mknod b-$i b 1 2
> > + mknod p-$i p
> > +
> > + ((i++))
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > +}
> > +
> > +function mv_files()
> > +{
> > + local i=0
> > +
> > + while true ; do
> > +
> > + mv -f f-$i f-$i-rename
> > + mv -f f-$i-rename f-$i
> > + ((i++))
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > +}
> > +
> > +function read_files()
> > +{
> > + while true ; do
> > +
> > + find .
> > + cat f-*
> > + ls d-*
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > +}
> > +
> > +function write_files()
> > +{
> > + while true ; do
> > +
> > + for j in f-* d-* c-* b-* p-* ; do
> > + echo 1 > $j
> > + echo 2 >> $j
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > +}
> > +
> > +function rm_files()
> > +{
> > + while true ; do
> > +
> > + rm -rf d-* f-* c-* b-* p-*
> > + sleep 3
> > + [ -e stoptest ] && { echo $FUNCNAME; exit; }
> > + done
> > +}
> > +
> > +pushd $TDIR > /dev/null 2>&1
> > +rm -f stoptest
> > +add_files > /dev/null 2>&1 &
> > +mv_files > /dev/null 2>&1 &
> > +read_files > /dev/null 2>&1 &
> > +write_files > /dev/null 2>&1 &
> > +rm_files > /dev/null 2>&1 &
> > +popd > /dev/null 2>&1
> > +
> > +sleep $TIMEO
> > +touch $TDIR/stoptest
> > diff --git a/testcases/kernel/fs/fs-notify/writefile.c b/testcases/kernel/fs/fs-notify/writefile.c
> > new file mode 100644
> > index 000000000..9025b5d95
> > --- /dev/null
> > +++ b/testcases/kernel/fs/fs-notify/writefile.c
> > @@ -0,0 +1,28 @@
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <unistd.h>
> > +#include <string.h>
> > +#include <sys/types.h>
> > +#include <sys/stat.h>
> > +#include <fcntl.h>
> > +
> > +int main(int argc, char **argv)
> > +{
> > + int fd, ret;
> > + char buf[BUFSIZ];
> > +
> > + memset(buf, 1, BUFSIZ);
> > + while (1) {
> > + fd = open(argv[1], O_RDWR);
> > + if (fd == -1) {
> > + perror("writefile open");
> > + exit(EXIT_FAILURE);
> > + }
> > + ret = write(fd, buf, BUFSIZ);
> > + if (ret == -1)
> > + perror("writefile write");
> > + usleep(1);
> > + }
> > + close(fd);
> > + return 0;
> > +}
> > --
> > 2.31.1
> >
> >
> > --
> > Mailing list info: https://lists.linux.it/listinfo/ltp
--
Murphy
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