8f55767619
By making m_in job local (i.e., each job has its own copy of m_in instead of refering to the global m_in) we don't have to store and restore m_in on every thread yield. This reduces overhead. Moreover, remove the assumption that m_in is preserved. Do_XXX functions have to copy the system call parameters as soon as possible and only pass those copies to other functions. Furthermore, this patch cleans up some code and uses better types in a lot of places.
1087 lines
25 KiB
C
1087 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 <string.h>
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#include <assert.h>
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#include <sys/stat.h>
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#include <sys/statfs.h>
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#include <sys/statvfs.h>
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#include <minix/vfsif.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 <unistd.h>
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#include <minix/vfsif.h>
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#include "fproc.h"
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#include "vmnt.h"
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#include "vnode.h"
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#include "path.h"
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#include "param.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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u64_t pos,
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unsigned int num_of_bytes,
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char *user_addr,
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int rw_flag,
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u64_t *new_posp,
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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, (vir_bytes) 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_DEV2 = dev;
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m.REQ_GRANT = grant_id;
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m.REQ_SEEK_POS_LO = ex64lo(pos);
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m.REQ_SEEK_POS_HI = ex64hi(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_posp = make64(m.RES_SEEK_POS_LO, m.RES_SEEK_POS_HI);
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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_chmod *
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*===========================================================================*/
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int req_chmod(
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int 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 = inode_nr;
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m.REQ_MODE = 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 = 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 = inode_nr;
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m.REQ_UID = newuid;
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m.REQ_GID = 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 = 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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int 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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if (path[0] == '/')
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panic("req_create: filename starts with '/'");
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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 = inode_nr;
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m.REQ_MODE = omode;
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m.REQ_UID = uid;
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m.REQ_GID = 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 = m.RES_INODE_NR;
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res->fmode = m.RES_MODE;
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res->fsize = m.RES_FILE_SIZE_LO;
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res->uid = m.RES_UID;
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res->gid = m.RES_GID;
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res->dev = m.RES_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_fstatfs *
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*===========================================================================*/
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int req_fstatfs(endpoint_t fs_e, endpoint_t proc_e, vir_bytes 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_magic(fs_e, proc_e, buf, sizeof(struct statfs),
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CPF_WRITE);
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if (grant_id == GRANT_INVALID)
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panic("req_fstatfs: cpf_grant_magic failed");
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/* Fill in request message */
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m.m_type = REQ_FSTATFS;
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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_statvfs *
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*===========================================================================*/
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int req_statvfs(endpoint_t fs_e, endpoint_t proc_e, vir_bytes 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_magic(fs_e, proc_e, 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_magic 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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/* Fill in request message */
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m.m_type = REQ_FTRUNC;
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m.REQ_INODE_NR = inode_nr;
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m.REQ_TRC_START_LO = start;
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m.REQ_TRC_START_HI = 0; /* Not used for now, so clear it. */
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m.REQ_TRC_END_LO = end;
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m.REQ_TRC_END_HI = 0; /* Not used for now, so clear it. */
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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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u64_t pos,
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char *buf,
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size_t size,
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u64_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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if (direct) {
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grant_id = cpf_grant_direct(fs_e, (vir_bytes) buf, size,
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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 = 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_LO = ex64lo(pos);
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m.REQ_SEEK_POS_HI = 0; /* Not used for now, so clear it. */
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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 = cvul64(m.RES_SEEK_POS_LO);
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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 = 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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/*===========================================================================*
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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 = linked_file;
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m.REQ_DIR_INO = 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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/*===========================================================================*
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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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int r;
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size_t len;
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cp_grant_id_t grant_id=0, grant_id2=0;
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message m;
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vfs_ucred_t credentials;
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int flags;
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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 = dir_ino;
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m.REQ_ROOT_INO = 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 = uid;
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m.REQ_GID = 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 = m.RES_INODE_NR;
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res->fmode = m.RES_MODE;
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res->fsize = m.RES_FILE_SIZE_LO;
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res->dev = m.RES_DEV;
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res->uid= m.RES_UID;
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res->gid= m.RES_GID;
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break;
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case EENTERMOUNT:
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res->inode_nr = 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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}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_mkdir *
|
|
*===========================================================================*/
|
|
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,
|
|
gid_t gid,
|
|
mode_t dmode
|
|
)
|
|
{
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
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message m;
|
|
|
|
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)
|
|
panic("req_mkdir: cpf_grant_direct failed");
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_MKDIR;
|
|
m.REQ_INODE_NR = inode_nr;
|
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m.REQ_MODE = dmode;
|
|
m.REQ_UID = uid;
|
|
m.REQ_GID = 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_mknod *
|
|
*===========================================================================*/
|
|
int req_mknod(
|
|
endpoint_t fs_e,
|
|
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 = inode_nr;
|
|
m.REQ_MODE = dmode;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_UID = uid;
|
|
m.REQ_GID = 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 = 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
|
|
)
|
|
{
|
|
int r;
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_NEWNODE;
|
|
m.REQ_MODE = dmode;
|
|
m.REQ_DEV = dev;
|
|
m.REQ_UID = uid;
|
|
m.REQ_GID = gid;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
|
|
res->fs_e = m.m_source;
|
|
res->inode_nr = m.RES_INODE_NR;
|
|
res->fmode = m.RES_MODE;
|
|
res->fsize = m.RES_FILE_SIZE_LO;
|
|
res->dev = m.RES_DEV;
|
|
res->uid = m.RES_UID;
|
|
res->gid = 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 = 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 = 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(
|
|
endpoint_t fs_e,
|
|
char *label,
|
|
dev_t dev,
|
|
int readonly,
|
|
int isroot,
|
|
struct node_details *res_nodep,
|
|
int *con_reqs
|
|
)
|
|
{
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
size_t len;
|
|
message m;
|
|
|
|
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_nodep->fs_e = m.m_source;
|
|
res_nodep->inode_nr = m.RES_INODE_NR;
|
|
res_nodep->fmode = m.RES_MODE;
|
|
res_nodep->fsize = m.RES_FILE_SIZE_LO;
|
|
res_nodep->uid = m.RES_UID;
|
|
res_nodep->gid = m.RES_GID;
|
|
*con_reqs = m.RES_CONREQS;
|
|
}
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* req_readwrite *
|
|
*===========================================================================*/
|
|
int req_readwrite(fs_e, inode_nr, pos, rw_flag, user_e,
|
|
user_addr, num_of_bytes, new_posp, cum_iop)
|
|
endpoint_t fs_e;
|
|
ino_t inode_nr;
|
|
u64_t pos;
|
|
int rw_flag;
|
|
endpoint_t user_e;
|
|
char *user_addr;
|
|
unsigned int num_of_bytes;
|
|
u64_t *new_posp;
|
|
unsigned int *cum_iop;
|
|
{
|
|
int r;
|
|
cp_grant_id_t grant_id;
|
|
message m;
|
|
|
|
if (ex64hi(pos) != 0)
|
|
panic("req_readwrite: pos too large");
|
|
|
|
grant_id = cpf_grant_magic(fs_e, user_e, (vir_bytes) 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 = inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
m.REQ_SEEK_POS_LO = ex64lo(pos);
|
|
m.REQ_SEEK_POS_HI = 0; /* Not used for now, so clear it. */
|
|
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 = cvul64(m.RES_SEEK_POS_LO);
|
|
*cum_iop = m.RES_NBYTES;
|
|
}
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* 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 = old_dir;
|
|
m.REQ_REN_NEW_DIR = 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 = 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 = inode_nr;
|
|
m.REQ_UID = uid;
|
|
m.REQ_GID = 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,
|
|
int pos, int stat_version)
|
|
{
|
|
cp_grant_id_t grant_id;
|
|
int r;
|
|
message m;
|
|
struct stat sb;
|
|
struct minix_prev_stat old_sb; /* for backward compatibility */
|
|
|
|
if (pos != 0 || stat_version != 0)
|
|
grant_id = cpf_grant_direct(fs_e, (vir_bytes) &sb,
|
|
sizeof(struct stat), CPF_WRITE);
|
|
else
|
|
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 = inode_nr;
|
|
m.REQ_GRANT = grant_id;
|
|
|
|
/* Send/rec request */
|
|
r = fs_sendrec(fs_e, &m);
|
|
cpf_revoke(grant_id);
|
|
|
|
if (r != OK || (pos == 0 && stat_version == 0))
|
|
return(r);
|
|
|
|
if (pos != 0)
|
|
sb.st_size -= pos;
|
|
if (stat_version == 0) {
|
|
r = sys_vircopy(SELF, D, (vir_bytes) &sb, proc_e, D, buf,
|
|
sizeof(struct stat));
|
|
return(r);
|
|
}
|
|
|
|
/* User needs old struct stat.
|
|
* Just 1 prev version at this moment */
|
|
assert(stat_version == 1);
|
|
|
|
/* XXX until that st_Xtime macroses used, we have to undefine them,
|
|
* because of minix_prev_stat
|
|
*/
|
|
#undef st_atime
|
|
#undef st_ctime
|
|
#undef st_mtime
|
|
|
|
/* Copy field by field because of st_gid type mismath and
|
|
* difference in order after atime.
|
|
*/
|
|
old_sb.st_dev = sb.st_dev;
|
|
old_sb.st_ino = sb.st_ino;
|
|
old_sb.st_mode = sb.st_mode;
|
|
old_sb.st_nlink = sb.st_nlink;
|
|
old_sb.st_uid = sb.st_uid;
|
|
old_sb.st_gid = sb.st_gid;
|
|
old_sb.st_rdev = sb.st_rdev;
|
|
old_sb.st_size = sb.st_size;
|
|
#if defined(_NETBSD_SOURCE)
|
|
old_sb.st_atime = sb.st_atimespec.tv_sec;
|
|
old_sb.st_mtime = sb.st_mtimespec.tv_sec;
|
|
old_sb.st_ctime = sb.st_ctimespec.tv_sec;
|
|
#else
|
|
old_sb.st_atime = sb.st_atime;
|
|
old_sb.st_mtime = sb.st_mtime;
|
|
old_sb.st_ctime = sb.st_ctime;
|
|
#endif
|
|
|
|
r = sys_vircopy(SELF, D, (vir_bytes) &old_sb, proc_e, D, buf,
|
|
sizeof(struct minix_prev_stat));
|
|
|
|
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 = 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(fs_e, inode_nr, actime, modtime)
|
|
endpoint_t fs_e;
|
|
ino_t inode_nr;
|
|
time_t actime;
|
|
time_t modtime;
|
|
{
|
|
message m;
|
|
|
|
/* Fill in request message */
|
|
m.m_type = REQ_UTIME;
|
|
m.REQ_INODE_NR = inode_nr;
|
|
m.REQ_ACTIME = actime;
|
|
m.REQ_MODTIME = modtime;
|
|
|
|
/* Send/rec request */
|
|
return fs_sendrec(fs_e, &m);
|
|
}
|