/* * * Coda: an Experimental Distributed File System * Release 3.1 * * Copyright (c) 1987-1998 Carnegie Mellon University * All Rights Reserved * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation, and * that credit is given to Carnegie Mellon University in all documents * and publicity pertaining to direct or indirect use of this code or its * derivatives. * * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF * ANY DERIVATIVE WORK. * * Carnegie Mellon encourages users of this software to return any * improvements or extensions that they make, and to grant Carnegie * Mellon the rights to redistribute these changes without encumbrance. * * @(#) src/sys/cfs/cfs_venus.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ * $Id: $ * */ #include #include #include #include #include #include #include #include #include #include #include #define DECL_NO_IN(name) \ struct cfs_in_hdr *inp; \ struct name ## _out *outp; \ int name ## _size = sizeof (struct cfs_in_hdr); \ int Isize = sizeof (struct cfs_in_hdr); \ int Osize = sizeof (struct name ## _out); \ int error #define DECL(name) \ struct name ## _in *inp; \ struct name ## _out *outp; \ int name ## _size = sizeof (struct name ## _in); \ int Isize = sizeof (struct name ## _in); \ int Osize = sizeof (struct name ## _out); \ int error #define DECL_NO_OUT(name) \ struct name ## _in *inp; \ struct cfs_out_hdr *outp; \ int name ## _size = sizeof (struct name ## _in); \ int Isize = sizeof (struct name ## _in); \ int Osize = sizeof (struct cfs_out_hdr); \ int error #define ALLOC_NO_IN(name) \ if (Osize > name ## _size) \ name ## _size = Osize; \ CFS_ALLOC(inp, struct cfs_in_hdr *, name ## _size);\ outp = (struct name ## _out *) inp #define ALLOC(name) \ if (Osize > name ## _size) \ name ## _size = Osize; \ CFS_ALLOC(inp, struct name ## _in *, name ## _size);\ outp = (struct name ## _out *) inp #define ALLOC_NO_OUT(name) \ if (Osize > name ## _size) \ name ## _size = Osize; \ CFS_ALLOC(inp, struct name ## _in *, name ## _size);\ outp = (struct cfs_out_hdr *) inp #define STRCPY(struc, name, len) \ bcopy(name, (char *)inp + (int)inp->struc, len); \ ((char*)inp + (int)inp->struc)[len++] = 0; \ Isize += len #define INIT_IN(in, op, ident, p) \ (in)->opcode = (op); \ (in)->pid = p ? p->p_pid : -1; \ (in)->pgid = p ? p->p_pgid : -1; \ (in)->sid = (p && p->p_session && p->p_session->s_leader) ? (p->p_session->s_leader->p_pid) : -1; \ if (ident != NOCRED) { \ (in)->cred.cr_uid = ident->cr_uid; \ (in)->cred.cr_groupid = ident->cr_gid; \ } else { \ bzero(&((in)->cred),sizeof(struct coda_cred)); \ (in)->cred.cr_uid = -1; \ (in)->cred.cr_groupid = -1; \ } \ #define CNV_OFLAG(to, from) \ do { \ to = 0; \ if (from & FREAD) to |= C_O_READ; \ if (from & FWRITE) to |= C_O_WRITE; \ if (from & O_TRUNC) to |= C_O_TRUNC; \ if (from & O_EXCL) to |= C_O_EXCL; \ } while (0) #define CNV_VV2V_ATTR(top, fromp) \ do { \ (top)->va_type = (fromp)->va_type; \ (top)->va_mode = (fromp)->va_mode; \ (top)->va_nlink = (fromp)->va_nlink; \ (top)->va_uid = (fromp)->va_uid; \ (top)->va_gid = (fromp)->va_gid; \ (top)->va_fsid = VNOVAL; \ (top)->va_fileid = (fromp)->va_fileid; \ (top)->va_size = (fromp)->va_size; \ (top)->va_blocksize = (fromp)->va_blocksize; \ (top)->va_atime = (fromp)->va_atime; \ (top)->va_mtime = (fromp)->va_mtime; \ (top)->va_ctime = (fromp)->va_ctime; \ (top)->va_gen = (fromp)->va_gen; \ (top)->va_flags = (fromp)->va_flags; \ (top)->va_rdev = (fromp)->va_rdev; \ (top)->va_bytes = (fromp)->va_bytes; \ (top)->va_filerev = (fromp)->va_filerev; \ (top)->va_vaflags = VNOVAL; \ (top)->va_spare = VNOVAL; \ } while (0) #define CNV_V2VV_ATTR(top, fromp) \ do { \ (top)->va_type = (fromp)->va_type; \ (top)->va_mode = (fromp)->va_mode; \ (top)->va_nlink = (fromp)->va_nlink; \ (top)->va_uid = (fromp)->va_uid; \ (top)->va_gid = (fromp)->va_gid; \ (top)->va_fileid = (fromp)->va_fileid; \ (top)->va_size = (fromp)->va_size; \ (top)->va_blocksize = (fromp)->va_blocksize; \ (top)->va_atime = (fromp)->va_atime; \ (top)->va_mtime = (fromp)->va_mtime; \ (top)->va_ctime = (fromp)->va_ctime; \ (top)->va_gen = (fromp)->va_gen; \ (top)->va_flags = (fromp)->va_flags; \ (top)->va_rdev = (fromp)->va_rdev; \ (top)->va_bytes = (fromp)->va_bytes; \ (top)->va_filerev = (fromp)->va_filerev; \ } while (0) int venus_root(void *mdp, struct ucred *cred, struct proc *p, /*out*/ ViceFid *VFid) { DECL_NO_IN(cfs_root); /* sets Isize & Osize */ ALLOC_NO_IN(cfs_root); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(inp, CFS_ROOT, cred, p); error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) *VFid = outp->VFid; CFS_FREE(inp, cfs_root_size); return error; } int venus_open(void *mdp, ViceFid *fid, int flag, struct ucred *cred, struct proc *p, /*out*/ dev_t *dev, ino_t *inode) { int cflag; DECL(cfs_open); /* sets Isize & Osize */ ALLOC(cfs_open); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_OPEN, cred, p); inp->VFid = *fid; CNV_OFLAG(cflag, flag); inp->flags = cflag; error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { *dev = outp->dev; *inode = outp->inode; } CFS_FREE(inp, cfs_open_size); return error; } int venus_close(void *mdp, ViceFid *fid, int flag, struct ucred *cred, struct proc *p) { int cflag; DECL_NO_OUT(cfs_close); /* sets Isize & Osize */ ALLOC_NO_OUT(cfs_close); /* sets inp & outp */ INIT_IN(&inp->ih, CFS_CLOSE, cred, p); inp->VFid = *fid; CNV_OFLAG(cflag, flag); inp->flags = cflag; error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_close_size); return error; } /* * these two calls will not exist!!! the container file is read/written * directly. */ void venus_read(void) { } void venus_write(void) { } /* * this is a bit sad too. the ioctl's are for the control file, not for * normal files. */ int venus_ioctl(void *mdp, ViceFid *fid, int com, int flag, caddr_t data, struct ucred *cred, struct proc *p) { DECL(cfs_ioctl); /* sets Isize & Osize */ struct PioctlData *iap = (struct PioctlData *)data; int tmp; cfs_ioctl_size = VC_MAXMSGSIZE; ALLOC(cfs_ioctl); /* sets inp & outp */ INIT_IN(&inp->ih, CFS_IOCTL, cred, p); inp->VFid = *fid; /* command was mutated by increasing its size field to reflect the * path and follow args. we need to subtract that out before sending * the command to venus. */ inp->cmd = (com & ~(IOCPARM_MASK << 16)); tmp = ((com >> 16) & IOCPARM_MASK) - sizeof (char *) - sizeof (int); inp->cmd |= (tmp & IOCPARM_MASK) << 16; inp->rwflag = flag; inp->len = iap->vi.in_size; inp->data = (char *)(sizeof (struct cfs_ioctl_in)); error = copyin(iap->vi.in, (char*)inp + (int)inp->data, iap->vi.in_size); if (error) { CFS_FREE(inp, cfs_ioctl_size); return(error); } Osize = VC_MAXMSGSIZE; error = cfscall(mdp, Isize + iap->vi.in_size, &Osize, (char *)inp); /* copy out the out buffer. */ if (!error) { if (outp->len > iap->vi.out_size) { error = EINVAL; } else { error = copyout((char *)outp + (int)outp->data, iap->vi.out, iap->vi.out_size); } } CFS_FREE(inp, cfs_ioctl_size); return error; } int venus_getattr(void *mdp, ViceFid *fid, struct ucred *cred, struct proc *p, /*out*/ struct vattr *vap) { DECL(cfs_getattr); /* sets Isize & Osize */ ALLOC(cfs_getattr); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_GETATTR, cred, p); inp->VFid = *fid; error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { CNV_VV2V_ATTR(vap, &outp->attr); } CFS_FREE(inp, cfs_getattr_size); return error; } int venus_setattr(void *mdp, ViceFid *fid, struct vattr *vap, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_setattr); /* sets Isize & Osize */ ALLOC_NO_OUT(cfs_setattr); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_SETATTR, cred, p); inp->VFid = *fid; CNV_V2VV_ATTR(&inp->attr, vap); error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_setattr_size); return error; } int venus_access(void *mdp, ViceFid *fid, int mode, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_access); /* sets Isize & Osize */ ALLOC_NO_OUT(cfs_access); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_ACCESS, cred, p); inp->VFid = *fid; /* NOTE: * NetBSD and Venus internals use the "data" in the low 3 bits. * Hence, the conversion. */ inp->flags = mode>>6; error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_access_size); return error; } int venus_readlink(void *mdp, ViceFid *fid, struct ucred *cred, struct proc *p, /*out*/ char **str, int *len) { DECL(cfs_readlink); /* sets Isize & Osize */ cfs_readlink_size += CFS_MAXPATHLEN; ALLOC(cfs_readlink); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_READLINK, cred, p); inp->VFid = *fid; Osize += CFS_MAXPATHLEN; error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { CFS_ALLOC(*str, char *, outp->count); *len = outp->count; bcopy((char *)outp + (int)outp->data, *str, *len); } CFS_FREE(inp, cfs_readlink_size); return error; } int venus_fsync(void *mdp, ViceFid *fid, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_fsync); /* sets Isize & Osize */ ALLOC_NO_OUT(cfs_fsync); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_FSYNC, cred, p); inp->VFid = *fid; error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_fsync_size); return error; } int venus_lookup(void *mdp, ViceFid *fid, const char *nm, int len, struct ucred *cred, struct proc *p, /*out*/ ViceFid *VFid, int *vtype) { DECL(cfs_lookup); /* sets Isize & Osize */ cfs_lookup_size += len + 1; ALLOC(cfs_lookup); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_LOOKUP, cred, p); inp->VFid = *fid; inp->name = Isize; STRCPY(name, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { *VFid = outp->VFid; *vtype = outp->vtype; } CFS_FREE(inp, cfs_lookup_size); return error; } int venus_create(void *mdp, ViceFid *fid, const char *nm, int len, int exclusive, int mode, struct vattr *va, struct ucred *cred, struct proc *p, /*out*/ ViceFid *VFid, struct vattr *attr) { DECL(cfs_create); /* sets Isize & Osize */ cfs_create_size += len + 1; ALLOC(cfs_create); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_CREATE, cred, p); inp->VFid = *fid; inp->excl = exclusive ? C_O_EXCL : 0; inp->mode = mode; CNV_V2VV_ATTR(&inp->attr, va); inp->name = Isize; STRCPY(name, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { *VFid = outp->VFid; CNV_VV2V_ATTR(attr, &outp->attr); } CFS_FREE(inp, cfs_create_size); return error; } int venus_remove(void *mdp, ViceFid *fid, const char *nm, int len, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_remove); /* sets Isize & Osize */ cfs_remove_size += len + 1; ALLOC_NO_OUT(cfs_remove); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_REMOVE, cred, p); inp->VFid = *fid; inp->name = Isize; STRCPY(name, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_remove_size); return error; } int venus_link(void *mdp, ViceFid *fid, ViceFid *tfid, const char *nm, int len, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_link); /* sets Isize & Osize */ cfs_link_size += len + 1; ALLOC_NO_OUT(cfs_link); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_LINK, cred, p); inp->sourceFid = *fid; inp->destFid = *tfid; inp->tname = Isize; STRCPY(tname, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_link_size); return error; } int venus_rename(void *mdp, ViceFid *fid, ViceFid *tfid, const char *nm, int len, const char *tnm, int tlen, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_rename); /* sets Isize & Osize */ cfs_rename_size += len + 1 + tlen + 1; ALLOC_NO_OUT(cfs_rename); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_RENAME, cred, p); inp->sourceFid = *fid; inp->destFid = *tfid; inp->srcname = Isize; STRCPY(srcname, nm, len); /* increments Isize */ inp->destname = Isize; STRCPY(destname, tnm, tlen); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_rename_size); return error; } int venus_mkdir(void *mdp, ViceFid *fid, const char *nm, int len, struct vattr *va, struct ucred *cred, struct proc *p, /*out*/ ViceFid *VFid, struct vattr *ova) { DECL(cfs_mkdir); /* sets Isize & Osize */ cfs_mkdir_size += len + 1; ALLOC(cfs_mkdir); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_MKDIR, cred, p); inp->VFid = *fid; CNV_V2VV_ATTR(&inp->attr, va); inp->name = Isize; STRCPY(name, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { *VFid = outp->VFid; CNV_VV2V_ATTR(ova, &outp->attr); } CFS_FREE(inp, cfs_mkdir_size); return error; } int venus_rmdir(void *mdp, ViceFid *fid, const char *nm, int len, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_rmdir); /* sets Isize & Osize */ cfs_rmdir_size += len + 1; ALLOC_NO_OUT(cfs_rmdir); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_RMDIR, cred, p); inp->VFid = *fid; inp->name = Isize; STRCPY(name, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_rmdir_size); return error; } int venus_symlink(void *mdp, ViceFid *fid, const char *lnm, int llen, const char *nm, int len, struct vattr *va, struct ucred *cred, struct proc *p) { DECL_NO_OUT(cfs_symlink); /* sets Isize & Osize */ cfs_symlink_size += llen + 1 + len + 1; ALLOC_NO_OUT(cfs_symlink); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_SYMLINK, cred, p); inp->VFid = *fid; CNV_V2VV_ATTR(&inp->attr, va); inp->srcname = Isize; STRCPY(srcname, lnm, llen); /* increments Isize */ inp->tname = Isize; STRCPY(tname, nm, len); /* increments Isize */ error = cfscall(mdp, Isize, &Osize, (char *)inp); CFS_FREE(inp, cfs_symlink_size); return error; } int venus_readdir(void *mdp, ViceFid *fid, int count, int offset, struct ucred *cred, struct proc *p, /*out*/ char *buffer, int *len) { DECL(cfs_readdir); /* sets Isize & Osize */ cfs_readdir_size = VC_MAXMSGSIZE; ALLOC(cfs_readdir); /* sets inp & outp */ /* send the open to venus. */ INIT_IN(&inp->ih, CFS_READDIR, cred, p); inp->VFid = *fid; inp->count = count; inp->offset = offset; Osize = VC_MAXMSGSIZE; error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { bcopy((char *)outp + (int)outp->data, buffer, outp->size); *len = outp->size; } CFS_FREE(inp, cfs_readdir_size); return error; } int venus_fhtovp(void *mdp, ViceFid *fid, struct ucred *cred, struct proc *p, /*out*/ ViceFid *VFid, int *vtype) { DECL(cfs_vget); /* sets Isize & Osize */ ALLOC(cfs_vget); /* sets inp & outp */ /* Send the open to Venus. */ INIT_IN(&inp->ih, CFS_VGET, cred, p); inp->VFid = *fid; error = cfscall(mdp, Isize, &Osize, (char *)inp); if (!error) { *VFid = outp->VFid; *vtype = outp->vtype; } CFS_FREE(inp, cfs_vget_size); return error; }