1070 lines
25 KiB
C
1070 lines
25 KiB
C
/* This file contains the wrapper functions for issuing a request
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* and receiving response from FS processes.
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* Each function builds a request message according to the request
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* parameter, calls the most low-level fs_sendrec, and copies
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* back the response.
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*/
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#include "fs.h"
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#include <minix/com.h>
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#include <minix/const.h>
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#include <minix/endpoint.h>
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#include <minix/u64.h>
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#include <minix/vfsif.h>
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#include <sys/dirent.h>
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#include <sys/stat.h>
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#include <sys/statvfs.h>
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#include <assert.h>
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#include <stddef.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#include "path.h"
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#include "vmnt.h"
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#include "vnode.h"
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/*===========================================================================*
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* req_breadwrite *
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*===========================================================================*/
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int req_breadwrite(
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endpoint_t fs_e,
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endpoint_t user_e,
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dev_t dev,
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off_t pos,
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unsigned int num_of_bytes,
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vir_bytes user_addr,
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int rw_flag,
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off_t *new_pos,
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unsigned int *cum_iop
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)
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{
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int r;
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cp_grant_id_t grant_id;
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message m;
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grant_id = cpf_grant_magic(fs_e, user_e, user_addr, num_of_bytes,
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(rw_flag == READING ? CPF_WRITE : CPF_READ));
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if(grant_id == -1)
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panic("req_breadwrite: cpf_grant_magic failed");
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/* Fill in request message */
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m.m_type = rw_flag == READING ? REQ_BREAD : REQ_BWRITE;
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m.REQ_DEV = dev;
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m.REQ_GRANT = grant_id;
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m.REQ_SEEK_POS = pos;
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m.REQ_NBYTES = num_of_bytes;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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if (r != OK) return(r);
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/* Fill in response structure */
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*new_pos = m.RES_SEEK_POS;
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*cum_iop = m.RES_NBYTES;
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return(OK);
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}
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/*===========================================================================*
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* req_bpeek *
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*===========================================================================*/
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int req_bpeek(endpoint_t fs_e, dev_t dev, off_t pos, unsigned int num_of_bytes)
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{
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message m;
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memset(&m, 0, sizeof(m));
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/* Fill in request message */
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m.m_type = REQ_BPEEK;
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m.REQ_DEV = dev;
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m.REQ_SEEK_POS = pos;
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m.REQ_NBYTES = num_of_bytes;
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/* Send/rec request */
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return fs_sendrec(fs_e, &m);
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}
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/*===========================================================================*
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* req_chmod *
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*===========================================================================*/
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int req_chmod(
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endpoint_t fs_e,
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ino_t inode_nr,
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mode_t rmode,
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mode_t *new_modep
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)
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{
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message m;
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int r;
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/* Fill in request message */
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m.m_type = REQ_CHMOD;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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m.REQ_MODE = (pmode_t) rmode;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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/* Copy back actual mode. */
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*new_modep = (mode_t) m.RES_MODE;
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return(r);
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}
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/*===========================================================================*
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* req_chown *
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*===========================================================================*/
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int req_chown(
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endpoint_t fs_e,
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ino_t inode_nr,
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uid_t newuid,
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gid_t newgid,
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mode_t *new_modep
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)
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{
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message m;
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int r;
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/* Fill in request message */
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m.m_type = REQ_CHOWN;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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m.REQ_UID = (puid_t) newuid;
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m.REQ_GID = (pgid_t) newgid;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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/* Return new mode to caller. */
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*new_modep = (mode_t) m.RES_MODE;
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return(r);
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}
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/*===========================================================================*
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* req_create *
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*===========================================================================*/
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int req_create(
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endpoint_t fs_e,
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ino_t inode_nr,
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int omode,
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uid_t uid,
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gid_t gid,
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char *path,
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node_details_t *res
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)
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{
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int r;
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cp_grant_id_t grant_id;
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size_t len;
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message m;
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struct vmnt *vmp;
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vmp = find_vmnt(fs_e);
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len = strlen(path) + 1;
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grant_id = cpf_grant_direct(fs_e, (vir_bytes) path, len, CPF_READ);
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if (grant_id == -1)
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panic("req_create: cpf_grant_direct failed");
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/* Fill in request message */
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m.m_type = REQ_CREATE;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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m.REQ_MODE = (pmode_t) omode;
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m.REQ_UID = (puid_t) uid;
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m.REQ_GID = (pgid_t) gid;
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m.REQ_GRANT = grant_id;
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m.REQ_PATH_LEN = len;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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if (r != OK) return(r);
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/* Fill in response structure */
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res->fs_e = m.m_source;
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res->inode_nr = (ino_t) m.RES_INODE_NR;
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res->fmode = (mode_t) m.RES_MODE;
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res->fsize = m.RES_FILE_SIZE;
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res->uid = (uid_t) m.RES_UID;
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res->gid = (gid_t) m.RES_GID;
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res->dev = NO_DEV;
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return(OK);
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}
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/*===========================================================================*
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* req_flush *
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*===========================================================================*/
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int req_flush(endpoint_t fs_e, dev_t dev)
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{
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message m;
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/* Fill in request message */
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m.m_type = REQ_FLUSH;
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m.REQ_DEV = dev;
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/* Send/rec request */
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return fs_sendrec(fs_e, &m);
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}
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/*===========================================================================*
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* req_statvfs *
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*===========================================================================*/
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int req_statvfs(endpoint_t fs_e, struct statvfs *buf)
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{
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int r;
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cp_grant_id_t grant_id;
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message m;
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grant_id = cpf_grant_direct(fs_e, (vir_bytes) buf, sizeof(struct statvfs),
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CPF_WRITE);
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if(grant_id == GRANT_INVALID)
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panic("req_statvfs: cpf_grant_direct failed");
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/* Fill in request message */
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m.m_type = REQ_STATVFS;
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m.REQ_GRANT = grant_id;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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return(r);
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}
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/*===========================================================================*
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* req_ftrunc *
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*===========================================================================*/
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int req_ftrunc(endpoint_t fs_e, ino_t inode_nr, off_t start, off_t end)
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{
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message m;
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struct vmnt *vmp;
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vmp = find_vmnt(fs_e);
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/* Fill in request message */
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m.m_type = REQ_FTRUNC;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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m.REQ_TRC_START = start;
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m.REQ_TRC_END = end;
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if (!(vmp->m_fs_flags & RES_64BIT) &&
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((start > INT_MAX) || (end > INT_MAX))) {
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/* FS does not support 64-bit off_t and 32 bits is not enough */
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return EINVAL;
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}
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/* Send/rec request */
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return fs_sendrec(fs_e, &m);
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}
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/*===========================================================================*
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* req_getdents *
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*===========================================================================*/
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int req_getdents(
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endpoint_t fs_e,
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ino_t inode_nr,
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off_t pos,
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char *buf,
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size_t size,
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off_t *new_pos,
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int direct
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)
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{
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int r;
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message m;
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cp_grant_id_t grant_id;
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struct vmnt *vmp;
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vmp = find_vmnt(fs_e);
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assert(vmp != NULL);
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if (direct) {
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grant_id = cpf_grant_direct(fs_e, (vir_bytes) buf, size, CPF_WRITE);
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} else {
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grant_id = cpf_grant_magic(fs_e, who_e, (vir_bytes) buf, size,
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CPF_WRITE);
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}
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if (grant_id < 0)
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panic("req_getdents: cpf_grant_direct/cpf_grant_magic failed: %d",
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grant_id);
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m.m_type = REQ_GETDENTS;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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m.REQ_GRANT = grant_id;
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m.REQ_MEM_SIZE = size;
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m.REQ_SEEK_POS = pos;
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if (!(vmp->m_fs_flags & RES_64BIT) && (pos > INT_MAX)) {
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/* FS does not support 64-bit off_t and 32 bits is not enough */
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return EINVAL;
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}
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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if (r == OK) {
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*new_pos = m.RES_SEEK_POS;
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r = m.RES_NBYTES;
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}
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return(r);
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}
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/*===========================================================================*
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* req_inhibread *
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*===========================================================================*/
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int req_inhibread(endpoint_t fs_e, ino_t inode_nr)
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{
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message m;
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/* Fill in request message */
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m.m_type = REQ_INHIBREAD;
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m.REQ_INODE_NR = (pino_t) inode_nr;
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/* Send/rec request */
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return fs_sendrec(fs_e, &m);
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}
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/*===========================================================================*
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* req_link *
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*===========================================================================*/
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int req_link(
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endpoint_t fs_e,
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ino_t link_parent,
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char *lastc,
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ino_t linked_file
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)
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{
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int r;
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cp_grant_id_t grant_id;
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const size_t len = strlen(lastc) + 1;
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message m;
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grant_id = cpf_grant_direct(fs_e, (vir_bytes)lastc, len, CPF_READ);
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if(grant_id == -1)
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panic("req_link: cpf_grant_direct failed");
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/* Fill in request message */
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m.m_type = REQ_LINK;
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m.REQ_INODE_NR = (pino_t) linked_file;
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m.REQ_DIR_INO = (pino_t) link_parent;
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m.REQ_GRANT = grant_id;
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m.REQ_PATH_LEN = len;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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return(r);
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}
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/*===========================================================================*
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* req_lookup *
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*===========================================================================*/
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int req_lookup(
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endpoint_t fs_e,
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ino_t dir_ino,
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ino_t root_ino,
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uid_t uid,
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gid_t gid,
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struct lookup *resolve,
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lookup_res_t *res,
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struct fproc *rfp
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)
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{
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message m;
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vfs_ucred_t credentials;
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int r, flags;
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size_t len;
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struct vmnt *vmp;
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cp_grant_id_t grant_id=0, grant_id2=0;
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vmp = find_vmnt(fs_e);
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grant_id = cpf_grant_direct(fs_e, (vir_bytes) resolve->l_path, PATH_MAX,
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CPF_READ | CPF_WRITE);
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if(grant_id == -1)
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panic("req_lookup: cpf_grant_direct failed");
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flags = resolve->l_flags;
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len = strlen(resolve->l_path) + 1;
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m.m_type = REQ_LOOKUP;
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m.REQ_GRANT = grant_id;
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m.REQ_PATH_LEN = len;
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m.REQ_PATH_SIZE = PATH_MAX + 1;
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m.REQ_DIR_INO = (pino_t) dir_ino;
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m.REQ_ROOT_INO = (pino_t) root_ino;
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if(rfp->fp_ngroups > 0) { /* Is the process member of multiple groups? */
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/* In that case the FS has to copy the uid/gid credentials */
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int i;
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/* Set credentials */
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credentials.vu_uid = rfp->fp_effuid;
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credentials.vu_gid = rfp->fp_effgid;
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credentials.vu_ngroups = rfp->fp_ngroups;
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for (i = 0; i < rfp->fp_ngroups; i++)
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credentials.vu_sgroups[i] = rfp->fp_sgroups[i];
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grant_id2 = cpf_grant_direct(fs_e, (vir_bytes) &credentials,
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sizeof(credentials), CPF_READ);
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if(grant_id2 == -1)
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panic("req_lookup: cpf_grant_direct failed");
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m.REQ_GRANT2 = grant_id2;
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m.REQ_UCRED_SIZE= sizeof(credentials);
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flags |= PATH_GET_UCRED;
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} else {
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/* When there's only one gid, we can send it directly */
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m.REQ_UID = (pgid_t) uid;
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m.REQ_GID = (pgid_t) gid;
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flags &= ~PATH_GET_UCRED;
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}
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m.REQ_FLAGS = flags;
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/* Send/rec request */
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r = fs_sendrec(fs_e, &m);
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cpf_revoke(grant_id);
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if(rfp->fp_ngroups > 0) cpf_revoke(grant_id2);
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/* Fill in response according to the return value */
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res->fs_e = m.m_source;
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switch (r) {
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case OK:
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res->inode_nr = (ino_t) m.RES_INODE_NR;
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res->fmode = (mode_t) m.RES_MODE;
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res->fsize = m.RES_FILE_SIZE;
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res->dev = m.RES_DEV;
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res->uid = (uid_t) m.RES_UID;
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res->gid = (gid_t) m.RES_GID;
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break;
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case EENTERMOUNT:
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res->inode_nr = (ino_t) m.RES_INODE_NR;
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res->char_processed = m.RES_OFFSET;
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res->symloop = m.RES_SYMLOOP;
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break;
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case ELEAVEMOUNT:
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res->char_processed = m.RES_OFFSET;
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res->symloop = m.RES_SYMLOOP;
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break;
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case ESYMLINK:
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res->char_processed = m.RES_OFFSET;
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res->symloop = m.RES_SYMLOOP;
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break;
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default:
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break;
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}
|
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return(r);
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}
|
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|
|
|
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/*===========================================================================*
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* req_mkdir *
|
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*===========================================================================*/
|
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int req_mkdir(
|
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endpoint_t fs_e,
|
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ino_t inode_nr,
|
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char *lastc,
|
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uid_t uid,
|
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gid_t gid,
|
|
mode_t dmode
|
|
)
|
|
{
|
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int r;
|
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cp_grant_id_t grant_id;
|
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size_t len;
|
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message m;
|
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|
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len = strlen(lastc) + 1;
|
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grant_id = cpf_grant_direct(fs_e, (vir_bytes)lastc, len, CPF_READ);
|
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if(grant_id == -1)
|
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panic("req_mkdir: cpf_grant_direct failed");
|
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|
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/* Fill in request message */
|
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m.m_type = REQ_MKDIR;
|
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m.REQ_INODE_NR = (pino_t) inode_nr;
|
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m.REQ_MODE = (pmode_t) dmode;
|
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m.REQ_UID = (puid_t) uid;
|
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m.REQ_GID = (pgid_t) gid;
|
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m.REQ_GRANT = grant_id;
|
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m.REQ_PATH_LEN = len;
|
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|
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/* Send/rec request */
|
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r = fs_sendrec(fs_e, &m);
|
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cpf_revoke(grant_id);
|
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|
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return(r);
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}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_mknod *
|
|
*===========================================================================*/
|
|
int req_mknod(
|
|
endpoint_t fs_e,
|
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ino_t inode_nr,
|
|
char *lastc,
|
|
uid_t uid,
|
|
gid_t gid,
|
|
mode_t dmode,
|
|
dev_t dev
|
|
)
|
|
{
|
|
int r;
|
|
size_t len;
|
|
cp_grant_id_t grant_id;
|
|
message m;
|
|
|
|
len = strlen(lastc) + 1;
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes)lastc, len, CPF_READ);
|
|
if(grant_id == -1)
|
|
panic("req_mknod: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_MKNOD;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_MODE = (pmode_t) dmode;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_UID = (puid_t) uid;
|
|
m.REQ_GID = (pgid_t) gid;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_PATH_LEN = len;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_mountpoint *
|
|
*===========================================================================*/
|
|
int req_mountpoint(endpoint_t fs_e, ino_t inode_nr)
|
|
{
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_MOUNTPOINT;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_newnode *
|
|
*===========================================================================*/
|
|
int req_newnode(
|
|
endpoint_t fs_e,
|
|
uid_t uid,
|
|
gid_t gid,
|
|
mode_t dmode,
|
|
dev_t dev,
|
|
struct node_details *res
|
|
)
|
|
{
|
|
struct vmnt *vmp;
|
|
int r;
|
|
message m;
|
|
|
|
vmp = find_vmnt(fs_e);
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_NEWNODE;
|
|
m.REQ_MODE = (pmode_t) dmode;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_UID = (puid_t) uid;
|
|
m.REQ_GID = (pgid_t) gid;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
|
|
res->fs_e = m.m_source;
|
|
res->inode_nr = (ino_t) m.RES_INODE_NR;
|
|
res->fmode = (mode_t) m.RES_MODE;
|
|
res->fsize = m.RES_FILE_SIZE;
|
|
res->dev = m.RES_DEV;
|
|
res->uid = (uid_t) m.RES_UID;
|
|
res->gid = (gid_t) m.RES_GID;
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_newdriver *
|
|
*===========================================================================*/
|
|
int req_newdriver(
|
|
endpoint_t fs_e,
|
|
dev_t dev,
|
|
char *label
|
|
)
|
|
{
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
|
message m;
|
|
int r;
|
|
|
|
/* Grant access to label */
|
|
len = strlen(label) + 1;
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes) label, len, CPF_READ);
|
|
if (grant_id == -1)
|
|
panic("req_newdriver: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_NEW_DRIVER;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_PATH_LEN = len;
|
|
|
|
/* Issue request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
|
|
cpf_revoke(grant_id);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_putnode *
|
|
*===========================================================================*/
|
|
int req_putnode(fs_e, inode_nr, count)
|
|
int fs_e;
|
|
ino_t inode_nr;
|
|
int count;
|
|
{
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_PUTNODE;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_COUNT = count;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_rdlink *
|
|
*===========================================================================*/
|
|
int req_rdlink(fs_e, inode_nr, proc_e, buf, len, direct)
|
|
endpoint_t fs_e;
|
|
ino_t inode_nr;
|
|
endpoint_t proc_e;
|
|
vir_bytes buf;
|
|
size_t len;
|
|
int direct; /* set to 1 to use direct grants instead of magic grants */
|
|
{
|
|
message m;
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
|
|
if (direct) {
|
|
grant_id = cpf_grant_direct(fs_e, buf, len, CPF_WRITE);
|
|
} else {
|
|
grant_id = cpf_grant_magic(fs_e, proc_e, buf, len, CPF_WRITE);
|
|
}
|
|
if (grant_id == -1)
|
|
panic("req_rdlink: cpf_grant_magic failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_RDLINK;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_MEM_SIZE = len;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
if (r == OK) r = m.RES_NBYTES;
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_readsuper *
|
|
*===========================================================================*/
|
|
int req_readsuper(
|
|
struct vmnt *vmp,
|
|
char *label,
|
|
dev_t dev,
|
|
int readonly,
|
|
int isroot,
|
|
struct node_details *res,
|
|
unsigned int *fs_flags
|
|
)
|
|
{
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
|
message m;
|
|
endpoint_t fs_e;
|
|
|
|
fs_e = vmp->m_fs_e;
|
|
|
|
len = strlen(label)+1;
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes) label, len, CPF_READ);
|
|
if (grant_id == -1)
|
|
panic("req_readsuper: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_READSUPER;
|
|
m.REQ_FLAGS = 0;
|
|
if(readonly) m.REQ_FLAGS |= REQ_RDONLY;
|
|
if(isroot) m.REQ_FLAGS |= REQ_ISROOT;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_PATH_LEN = len;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
if(r == OK) {
|
|
/* Fill in response structure */
|
|
res->fs_e = m.m_source;
|
|
res->inode_nr = (ino_t) m.RES_INODE_NR;
|
|
res->fmode = (mode_t) m.RES_MODE;
|
|
res->fsize = m.RES_FILE_SIZE;
|
|
res->uid = (uid_t) m.RES_UID;
|
|
res->gid = (gid_t) m.RES_GID;
|
|
*fs_flags = m.RES_FLAGS;
|
|
}
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_readwrite *
|
|
*===========================================================================*/
|
|
int req_readwrite(
|
|
endpoint_t fs_e,
|
|
ino_t inode_nr,
|
|
off_t pos,
|
|
int rw_flag,
|
|
endpoint_t user_e,
|
|
vir_bytes user_addr,
|
|
unsigned int num_of_bytes,
|
|
off_t *new_posp,
|
|
unsigned int *cum_iop)
|
|
{
|
|
struct vmnt *vmp;
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
message m;
|
|
|
|
vmp = find_vmnt(fs_e);
|
|
|
|
grant_id = cpf_grant_magic(fs_e, user_e, user_addr, num_of_bytes,
|
|
(rw_flag==READING ? CPF_WRITE:CPF_READ));
|
|
if (grant_id == -1)
|
|
panic("req_readwrite: cpf_grant_magic failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = rw_flag == READING ? REQ_READ : REQ_WRITE;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_SEEK_POS = pos;
|
|
if ((!(vmp->m_fs_flags & RES_64BIT)) && (pos > INT_MAX)) {
|
|
return EINVAL;
|
|
}
|
|
m.REQ_NBYTES = num_of_bytes;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
if (r == OK) {
|
|
/* Fill in response structure */
|
|
*new_posp = m.RES_SEEK_POS;
|
|
*cum_iop = m.RES_NBYTES;
|
|
}
|
|
|
|
return(r);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* req_peek *
|
|
*===========================================================================*/
|
|
int req_peek(endpoint_t fs_e, ino_t inode_nr, off_t pos, unsigned int bytes)
|
|
{
|
|
message m;
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
|
|
if (ex64hi(pos) != 0)
|
|
panic("req_peek: pos too large");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_PEEK;
|
|
m.REQ_INODE_NR = inode_nr;
|
|
m.REQ_GRANT = -1;
|
|
m.REQ_SEEK_POS = pos;
|
|
m.REQ_NBYTES = bytes;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* req_rename *
|
|
*===========================================================================*/
|
|
int req_rename(fs_e, old_dir, old_name, new_dir, new_name)
|
|
endpoint_t fs_e;
|
|
ino_t old_dir;
|
|
char *old_name;
|
|
ino_t new_dir;
|
|
char *new_name;
|
|
{
|
|
int r;
|
|
cp_grant_id_t gid_old, gid_new;
|
|
size_t len_old, len_new;
|
|
message m;
|
|
|
|
len_old = strlen(old_name) + 1;
|
|
gid_old = cpf_grant_direct(fs_e, (vir_bytes) old_name, len_old, CPF_READ);
|
|
if(gid_old == -1)
|
|
panic("req_rename: cpf_grant_direct failed");
|
|
|
|
len_new = strlen(new_name) + 1;
|
|
gid_new = cpf_grant_direct(fs_e, (vir_bytes) new_name, len_new, CPF_READ);
|
|
if(gid_new == -1)
|
|
panic("req_rename: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_RENAME;
|
|
m.REQ_REN_OLD_DIR = (pino_t) old_dir;
|
|
m.REQ_REN_NEW_DIR = (pino_t) new_dir;
|
|
m.REQ_REN_GRANT_OLD = gid_old;
|
|
m.REQ_REN_LEN_OLD = len_old;
|
|
m.REQ_REN_GRANT_NEW = gid_new;
|
|
m.REQ_REN_LEN_NEW = len_new;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(gid_old);
|
|
cpf_revoke(gid_new);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_rmdir *
|
|
*===========================================================================*/
|
|
int req_rmdir(fs_e, inode_nr, lastc)
|
|
endpoint_t fs_e;
|
|
ino_t inode_nr;
|
|
char *lastc;
|
|
{
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
|
message m;
|
|
|
|
len = strlen(lastc) + 1;
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes) lastc, len, CPF_READ);
|
|
if(grant_id == -1)
|
|
panic("req_rmdir: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_RMDIR;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_PATH_LEN = len;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_slink *
|
|
*===========================================================================*/
|
|
int req_slink(
|
|
endpoint_t fs_e,
|
|
ino_t inode_nr,
|
|
char *lastc,
|
|
endpoint_t proc_e,
|
|
vir_bytes path_addr,
|
|
size_t path_length,
|
|
uid_t uid,
|
|
gid_t gid
|
|
)
|
|
{
|
|
int r;
|
|
size_t len;
|
|
cp_grant_id_t gid_name, gid_buf;
|
|
message m;
|
|
|
|
len = strlen(lastc) + 1;
|
|
gid_name = cpf_grant_direct(fs_e, (vir_bytes) lastc, len, CPF_READ);
|
|
if (gid_name == GRANT_INVALID)
|
|
panic("req_slink: cpf_grant_direct failed");
|
|
|
|
gid_buf = cpf_grant_magic(fs_e, proc_e, path_addr, path_length, CPF_READ);
|
|
if (gid_buf == GRANT_INVALID) {
|
|
cpf_revoke(gid_name);
|
|
panic("req_slink: cpf_grant_magic failed");
|
|
}
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_SLINK;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_UID = (puid_t) uid;
|
|
m.REQ_GID = (pgid_t) gid;
|
|
m.REQ_GRANT = gid_name;
|
|
m.REQ_PATH_LEN = len;
|
|
m.REQ_GRANT3 = gid_buf;
|
|
m.REQ_MEM_SIZE = path_length;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(gid_name);
|
|
cpf_revoke(gid_buf);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_stat *
|
|
*===========================================================================*/
|
|
int req_stat(endpoint_t fs_e, ino_t inode_nr, endpoint_t proc_e, vir_bytes buf)
|
|
{
|
|
cp_grant_id_t grant_id;
|
|
int r;
|
|
message m;
|
|
|
|
/* Grant FS access to copy straight into user provided buffer */
|
|
grant_id = cpf_grant_magic(fs_e, proc_e, buf, sizeof(struct stat), CPF_WRITE);
|
|
|
|
if (grant_id < 0)
|
|
panic("req_stat: cpf_grant_* failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_STAT;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_sync *
|
|
*===========================================================================*/
|
|
int req_sync(fs_e)
|
|
endpoint_t fs_e;
|
|
{
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_SYNC;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_unlink *
|
|
*===========================================================================*/
|
|
int req_unlink(fs_e, inode_nr, lastc)
|
|
endpoint_t fs_e;
|
|
ino_t inode_nr;
|
|
char *lastc;
|
|
{
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
|
int r;
|
|
message m;
|
|
|
|
len = strlen(lastc) + 1;
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes) lastc, len, CPF_READ);
|
|
if(grant_id == -1)
|
|
panic("req_unlink: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_UNLINK;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_PATH_LEN = len;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_unmount *
|
|
*===========================================================================*/
|
|
int req_unmount(fs_e)
|
|
endpoint_t fs_e;
|
|
{
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_UNMOUNT;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_utime *
|
|
*===========================================================================*/
|
|
int req_utime(endpoint_t fs_e, ino_t inode_nr, struct timespec * actimespec,
|
|
struct timespec * modtimespec)
|
|
{
|
|
message m;
|
|
|
|
assert(actimespec != NULL);
|
|
assert(modtimespec != NULL);
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_UTIME;
|
|
m.REQ_INODE_NR = (pino_t) inode_nr;
|
|
m.REQ_INODE_NR = inode_nr;
|
|
m.REQ_ACTIME = actimespec->tv_sec;
|
|
m.REQ_MODTIME = modtimespec->tv_sec;
|
|
m.REQ_ACNSEC = actimespec->tv_nsec;
|
|
m.REQ_MODNSEC = modtimespec->tv_nsec;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|