fusefs: support VOP_MKNOD
PR: 236236 Sponsored by: The FreeBSD Foundation
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parent
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commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/projects/fuse2/; revision=345422
@ -1134,9 +1134,20 @@ static int
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fuse_vnop_mknod(struct vop_mknod_args *ap)
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{
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return (EINVAL);
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}
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struct vnode *dvp = ap->a_dvp;
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struct vnode **vpp = ap->a_vpp;
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struct componentname *cnp = ap->a_cnp;
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struct vattr *vap = ap->a_vap;
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struct fuse_mknod_in fmni;
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if (fuse_isdeadfs(dvp))
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return ENXIO;
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fmni.mode = MAKEIMODE(vap->va_type, vap->va_mode);
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fmni.rdev = vap->va_rdev;
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return (fuse_internal_newentry(dvp, vpp, cnp, FUSE_MKNOD, &fmni,
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sizeof(fmni), vap->va_type));
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}
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/*
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struct vnop_open_args {
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@ -1161,9 +1172,10 @@ fuse_vnop_open(struct vop_open_args *ap)
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int error, isdir = 0;
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int32_t fuse_open_flags;
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if (fuse_isdeadfs(vp)) {
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if (fuse_isdeadfs(vp))
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return ENXIO;
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}
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if (vp->v_type == VCHR || vp->v_type == VBLK || vp->v_type == VFIFO)
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return (EOPNOTSUPP);
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if ((mode & (FREAD | FWRITE)) == 0)
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return EINVAL;
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@ -37,6 +37,13 @@ extern "C" {
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using namespace testing;
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#ifndef VNOVAL
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#define VNOVAL (-1) /* Defined in sys/vnode.h */
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#endif
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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class Mknod: public FuseTest {
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public:
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@ -50,9 +57,7 @@ virtual void SetUp() {
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}
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/* Test an OK creation of a file with the given mode and device number */
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void test_ok(mode_t mode, dev_t dev) {
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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void expect_mknod(mode_t mode, dev_t dev) {
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uint64_t ino = 42;
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EXPECT_LOOKUP(1, RELPATH).WillOnce(Invoke(ReturnErrno(ENOENT)));
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@ -63,19 +68,18 @@ void test_ok(mode_t mode, dev_t dev) {
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sizeof(fuse_mknod_in);
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return (in->header.opcode == FUSE_MKNOD &&
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in->body.mknod.mode == mode &&
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in->body.mknod.rdev == dev &&
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in->body.mknod.rdev == (uint32_t)dev &&
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(0 == strcmp(RELPATH, name)));
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}, Eq(true)),
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_)
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).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto out) {
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SET_OUT_HEADER_LEN(out, create);
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out->body.create.entry.attr.mode = mode;
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out->body.create.entry.nodeid = ino;
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out->body.create.entry.entry_valid = UINT64_MAX;
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out->body.create.entry.attr_valid = UINT64_MAX;
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out->body.create.entry.attr.rdev = dev;
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SET_OUT_HEADER_LEN(out, entry);
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out->body.entry.attr.mode = mode;
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out->body.entry.nodeid = ino;
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out->body.entry.entry_valid = UINT64_MAX;
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out->body.entry.attr_valid = UINT64_MAX;
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out->body.entry.attr.rdev = dev;
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})));
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EXPECT_EQ(0, mknod(FULLPATH, mode, dev)) << strerror(errno);
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}
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};
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@ -85,27 +89,28 @@ void test_ok(mode_t mode, dev_t dev) {
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* though FreeBSD doesn't use block devices, this is useful when copying media
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* from or preparing media for other operating systems.
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*/
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236236 */
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TEST_F(Mknod, DISABLED_blk)
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TEST_F(Mknod, blk)
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{
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test_ok(S_IFBLK | 0755, 0xfe00); /* /dev/vda's device number on Linux */
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mode_t mode = S_IFBLK | 0755;
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dev_t rdev = 0xfe00; /* /dev/vda's device number on Linux */
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expect_mknod(mode, rdev);
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EXPECT_EQ(0, mknod(FULLPATH, mode, rdev)) << strerror(errno);
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}
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236236 */
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TEST_F(Mknod, DISABLED_chr)
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TEST_F(Mknod, chr)
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{
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test_ok(S_IFCHR | 0755, 0x64); /* /dev/fuse's device number */
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mode_t mode = S_IFCHR | 0755;
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dev_t rdev = 54; /* /dev/fuse's device number */
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expect_mknod(mode, rdev);
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EXPECT_EQ(0, mknod(FULLPATH, mode, rdev)) << strerror(errno);
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}
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/*
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* The daemon is responsible for checking file permissions (unless the
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* default_permissions mount option was used)
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*/
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236236 */
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TEST_F(Mknod, DISABLED_eperm)
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TEST_F(Mknod, eperm)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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mode_t mode = S_IFIFO | 0755;
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EXPECT_LOOKUP(1, RELPATH).WillOnce(Invoke(ReturnErrno(ENOENT)));
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@ -120,19 +125,26 @@ TEST_F(Mknod, DISABLED_eperm)
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}, Eq(true)),
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_)
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).WillOnce(Invoke(ReturnErrno(EPERM)));
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EXPECT_NE(0, mknod(FULLPATH, mode, 0));
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EXPECT_NE(0, mkfifo(FULLPATH, mode));
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EXPECT_EQ(EPERM, errno);
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}
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236236 */
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TEST_F(Mknod, DISABLED_fifo)
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TEST_F(Mknod, fifo)
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{
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test_ok(S_IFIFO | 0755, 0);
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mode_t mode = S_IFIFO | 0755;
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dev_t rdev = VNOVAL; /* Fifos don't have device numbers */
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expect_mknod(mode, rdev);
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EXPECT_EQ(0, mkfifo(FULLPATH, mode)) << strerror(errno);
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}
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236236 */
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/*
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* fusefs(5) lacks VOP_WHITEOUT support. No bugzilla entry, because that's a
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* feature, not a bug
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*/
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TEST_F(Mknod, DISABLED_whiteout)
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{
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test_ok(S_IFWHT | 0755, 0);
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mode_t mode = S_IFWHT | 0755;
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dev_t rdev = VNOVAL; /* whiteouts don't have device numbers */
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expect_mknod(mode, rdev);
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EXPECT_EQ(0, mknod(FULLPATH, mode, 0)) << strerror(errno);
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}
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@ -175,6 +175,10 @@ void debug_fuseop(const mockfs_buf_in *in)
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case FUSE_LOOKUP:
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printf(" %s", in->body.lookup);
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break;
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case FUSE_MKNOD:
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printf(" mode=%#o rdev=%x", in->body.mknod.mode,
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in->body.mknod.rdev);
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break;
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case FUSE_OPEN:
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printf(" flags=%#x mode=%#o",
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in->body.open.flags, in->body.open.mode);
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@ -81,6 +81,30 @@ void test_ok(int os_flags, int fuse_flags) {
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};
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/*
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* fusefs(5) does not support I/O on device nodes (neither does UFS). But it
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* shouldn't crash
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*/
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TEST_F(Open, chr)
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{
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const char FULLPATH[] = "mountpoint/zero";
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const char RELPATH[] = "zero";
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uint64_t ino = 42;
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EXPECT_LOOKUP(1, RELPATH)
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.WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto out) {
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SET_OUT_HEADER_LEN(out, entry);
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out->body.entry.attr.mode = S_IFCHR | 0644;
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out->body.entry.nodeid = ino;
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out->body.entry.attr.nlink = 1;
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out->body.entry.attr_valid = UINT64_MAX;
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out->body.entry.attr.rdev = 44; /* /dev/zero's rdev */
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})));
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ASSERT_EQ(-1, open(FULLPATH, O_RDONLY));
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EXPECT_EQ(EOPNOTSUPP, errno);
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}
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/*
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* The fuse daemon fails the request with enoent. This usually indicates a
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* race condition: some other FUSE client removed the file in between when the
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@ -126,6 +150,26 @@ TEST_F(Open, eperm)
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EXPECT_EQ(EPERM, errno);
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}
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/* fusefs(5) does not yet support I/O on fifos. But it shouldn't crash. */
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TEST_F(Open, fifo)
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{
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const char FULLPATH[] = "mountpoint/zero";
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const char RELPATH[] = "zero";
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uint64_t ino = 42;
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EXPECT_LOOKUP(1, RELPATH)
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.WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto out) {
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SET_OUT_HEADER_LEN(out, entry);
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out->body.entry.attr.mode = S_IFIFO | 0644;
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out->body.entry.nodeid = ino;
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out->body.entry.attr.nlink = 1;
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out->body.entry.attr_valid = UINT64_MAX;
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})));
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ASSERT_EQ(-1, open(FULLPATH, O_RDONLY));
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EXPECT_EQ(EOPNOTSUPP, errno);
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}
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236340 */
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TEST_F(Open, DISABLED_o_append)
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{
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