75 #define	VFS_MOUNTARG_SIZE_MAX	(1024 * 64)
80 static void	free_mntarg(struct mntarg *ma);
438 	 * Mount flags are now 64-bits. On 32-bit archtectures only  in sys_nmount()
440 	 * 64-bit flags correctly.  in sys_nmount()
1055 	struct mntarg *ma = NULL;  in sys_mount()  local
1060 	 * Mount flags are now 64-bits. On 32-bit architectures only  in sys_mount()
1062 	 * 64-bit flags correctly.  in sys_mount()
1095 	ma = mount_argsu(ma, "fstype", uap->type, MFSNAMELEN);  in sys_mount()
1096 	ma = mount_argsu(ma, "fspath", uap->path, MNAMELEN);  in sys_mount()
1097 	ma = mount_argb(ma, flags & MNT_RDONLY, "noro");  in sys_mount()
1098 	ma = mount_argb(ma, !(flags & MNT_NOSUID), "nosuid");  in sys_mount()
1099 	ma = mount_argb(ma, !(flags & MNT_NOEXEC), "noexec");  in sys_mount()
1102 		return (vfsp->vfc_vfsops_sd->vfs_cmount(ma, uap->data, flags));  in sys_mount()
1103 	return (vfsp->vfc_vfsops->vfs_cmount(ma, uap->data, flags));  in sys_mount()
2811 mount_argb(struct mntarg *ma, int flag, const char *name)  in mount_argb()  argument
2817 	return (mount_arg(ma, name + (flag ? 2 : 0), NULL, 0));  in mount_argb()
2824 mount_argf(struct mntarg *ma, const char *name, const char *fmt, ...)  in mount_argf()  argument
2831 	if (ma == NULL) {  in mount_argf()
2832 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);  in mount_argf()
2833 		SLIST_INIT(&ma->list);  in mount_argf()
2835 	if (ma->error)  in mount_argf()
2836 		return (ma);  in mount_argf()
2838 	ma->v = realloc(ma->v, sizeof *ma->v * (ma->len + 2),  in mount_argf()
2840 	ma->v[ma->len].iov_base = (void *)(uintptr_t)name;  in mount_argf()
2841 	ma->v[ma->len].iov_len = strlen(name) + 1;  in mount_argf()
2842 	ma->len++;  in mount_argf()
2851 	SLIST_INSERT_HEAD(&ma->list, maa, next);  in mount_argf()
2855 	ma->v[ma->len].iov_base = maa + 1;  in mount_argf()
2856 	ma->v[ma->len].iov_len = len;  in mount_argf()
2857 	ma->len++;  in mount_argf()
2859 	return (ma);  in mount_argf()
2866 mount_argsu(struct mntarg *ma, const char *name, const void *val, int len)  in mount_argsu()  argument
2872 		return (ma);  in mount_argsu()
2873 	if (ma == NULL) {  in mount_argsu()
2874 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);  in mount_argsu()
2875 		SLIST_INIT(&ma->list);  in mount_argsu()
2877 	if (ma->error)  in mount_argsu()
2878 		return (ma);  in mount_argsu()
2880 	SLIST_INSERT_HEAD(&ma->list, maa, next);  in mount_argsu()
2882 	ma->error = copyinstr(val, tbuf, len, NULL);  in mount_argsu()
2883 	return (mount_arg(ma, name, tbuf, -1));  in mount_argsu()
2892 mount_arg(struct mntarg *ma, const char *name, const void *val, int len)  in mount_arg()  argument
2895 	if (ma == NULL) {  in mount_arg()
2896 		ma = malloc(sizeof *ma, M_MOUNT, M_WAITOK | M_ZERO);  in mount_arg()
2897 		SLIST_INIT(&ma->list);  in mount_arg()
2899 	if (ma->error)  in mount_arg()
2900 		return (ma);  in mount_arg()
2902 	ma->v = realloc(ma->v, sizeof *ma->v * (ma->len + 2),  in mount_arg()
2904 	ma->v[ma->len].iov_base = (void *)(uintptr_t)name;  in mount_arg()
2905 	ma->v[ma->len].iov_len = strlen(name) + 1;  in mount_arg()
2906 	ma->len++;  in mount_arg()
2908 	ma->v[ma->len].iov_base = (void *)(uintptr_t)val;  in mount_arg()
2910 		ma->v[ma->len].iov_len = strlen(val) + 1;  in mount_arg()
2912 		ma->v[ma->len].iov_len = len;  in mount_arg()
2913 	ma->len++;  in mount_arg()
2914 	return (ma);  in mount_arg()
2921 free_mntarg(struct mntarg *ma)  in free_mntarg()  argument
2925 	while (!SLIST_EMPTY(&ma->list)) {  in free_mntarg()
2926 		maa = SLIST_FIRST(&ma->list);  in free_mntarg()
2927 		SLIST_REMOVE_HEAD(&ma->list, next);  in free_mntarg()
2930 	free(ma->v, M_MOUNT);  in free_mntarg()
2931 	free(ma, M_MOUNT);  in free_mntarg()
2938 kernel_mount(struct mntarg *ma, uint64_t flags)  in kernel_mount()  argument
2943 	KASSERT(ma != NULL, ("kernel_mount NULL ma"));  in kernel_mount()
2944 	KASSERT(ma->error != 0 || ma->v != NULL, ("kernel_mount NULL ma->v"));  in kernel_mount()
2945 	KASSERT(!(ma->len & 1), ("kernel_mount odd ma->len (%d)", ma->len));  in kernel_mount()
2947 	error = ma->error;  in kernel_mount()
2949 		auio.uio_iov = ma->v;  in kernel_mount()
2950 		auio.uio_iovcnt = ma->len;  in kernel_mount()
2954 	free_mntarg(ma);  in kernel_mount()