sys/kern/vfs_mount.c

75 static void	free_mntarg(struct mntarg *ma);
709 	struct mntarg *ma = NULL;
751 	ma = mount_argsu(ma, "fstype", uap->type, MFSNAMELEN);
752 	ma = mount_argsu(ma, "fspath", uap->path, MNAMELEN);
753 	ma = mount_argb(ma, flags & MNT_RDONLY, "noro");
754 	ma = mount_argb(ma, !(flags & MNT_NOSUID), "nosuid");
755 	ma = mount_argb(ma, !(flags & MNT_NOEXEC), "noexec");
757 	error = vfsp->vfc_vfsops->vfs_cmount(ma, uap->data, flags);
1819 mount_argb(struct mntarg *ma, int flag, const char *name)
1825 	return (mount_arg(ma, name + (flag ? 2 : 0), NULL, 0));
1832 mount_argf(struct mntarg *ma, const char *name, const char *fmt, ...)
1839 	if (ma == NULL) {
1840 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);
1841 		SLIST_INIT(&ma->list);
1843 	if (ma->error)
1844 		return (ma);
1846 	ma->v = realloc(ma->v, sizeof *ma->v * (ma->len + 2),
1848 	ma->v[ma->len].iov_base = (void *)(uintptr_t)name;
1849 	ma->v[ma->len].iov_len = strlen(name) + 1;
1850 	ma->len++;
1859 	SLIST_INSERT_HEAD(&ma->list, maa, next);
1863 	ma->v[ma->len].iov_base = maa + 1;
1864 	ma->v[ma->len].iov_len = len;
1865 	ma->len++;
1867 	return (ma);
1874 mount_argsu(struct mntarg *ma, const char *name, const void *val, int len)
1880 		return (ma);
1881 	if (ma == NULL) {
1882 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);
1883 		SLIST_INIT(&ma->list);
1885 	if (ma->error)
1886 		return (ma);
1888 	SLIST_INSERT_HEAD(&ma->list, maa, next);
1890 	ma->error = copyinstr(val, tbuf, len, NULL);
1891 	return (mount_arg(ma, name, tbuf, -1));
1900 mount_arg(struct mntarg *ma, const char *name, const void *val, int len)
1903 	if (ma == NULL) {
1904 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);
1905 		SLIST_INIT(&ma->list);
1907 	if (ma->error)
1908 		return (ma);
1910 	ma->v = realloc(ma->v, sizeof *ma->v * (ma->len + 2),
1912 	ma->v[ma->len].iov_base = (void *)(uintptr_t)name;
1913 	ma->v[ma->len].iov_len = strlen(name) + 1;
1914 	ma->len++;
1916 	ma->v[ma->len].iov_base = (void *)(uintptr_t)val;
1918 		ma->v[ma->len].iov_len = strlen(val) + 1;
1920 		ma->v[ma->len].iov_len = len;
1921 	ma->len++;
1922 	return (ma);
1929 free_mntarg(struct mntarg *ma)
1933 	while (!SLIST_EMPTY(&ma->list)) {
1934 		maa = SLIST_FIRST(&ma->list);
1935 		SLIST_REMOVE_HEAD(&ma->list, next);
1938 	free(ma->v, M_MOUNT);
1939 	free(ma, M_MOUNT);
1946 kernel_mount(struct mntarg *ma, uint64_t flags)
1951 	KASSERT(ma != NULL, ("kernel_mount NULL ma"));
1952 	KASSERT(ma->v != NULL, ("kernel_mount NULL ma->v"));
1953 	KASSERT(!(ma->len & 1), ("kernel_mount odd ma->len (%d)", ma->len));
1955 	auio.uio_iov = ma->v;
1956 	auio.uio_iovcnt = ma->len;
1959 	error = ma->error;
1962 	free_mntarg(ma);
1972 	struct mntarg *ma = NULL;
1984 		ma = mount_arg(ma, cp, vp, (vp != NULL ? -1 : 0));
1988 	error = kernel_mount(ma, flags);