* catch up with kernel changes
* better error handling when mounting
This commit is contained in:
pooka
parent
098590e87e
commit
80ce20607e
@ -1,4 +1,4 @@
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/* $NetBSD: puffs.c,v 1.5 2006/11/07 22:10:53 pooka Exp $ */
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/* $NetBSD: puffs.c,v 1.6 2006/11/09 13:11:01 pooka Exp $ */
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/*
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* Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved.
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@ -34,7 +34,7 @@
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: puffs.c,v 1.5 2006/11/07 22:10:53 pooka Exp $");
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__RCSID("$NetBSD: puffs.c,v 1.6 2006/11/09 13:11:01 pooka Exp $");
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#endif /* !lint */
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#include <sys/param.h>
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@ -52,22 +52,20 @@ __RCSID("$NetBSD: puffs.c,v 1.5 2006/11/07 22:10:53 pooka Exp $");
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static int puffcall(struct puffs_usermount *, struct puffs_req *);
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#define eret(a) do {errno=(a);goto failfree;}while/*NOTREACHED*/(/*CONSTCOND*/0)
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struct puffs_usermount *
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puffs_mount(struct puffs_vfsops *pvfs, struct puffs_vnops *pvn,
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const char *dir, int mntflags, const char *puffsname,
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uint32_t pflags, size_t maxreqlen)
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{
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struct puffs_startreq sreq;
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struct puffs_args pargs;
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struct puffs_vfsreq_start sreq;
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struct puffs_usermount *pu;
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int fd;
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int fd = 0, rv;
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pu = NULL;
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if (pvfs->puffs_start == NULL)
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eret(EINVAL);
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if (pvfs->puffs_mount == NULL) {
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errno = EINVAL;
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return NULL;
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}
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fd = open("/dev/puffs", O_RDONLY);
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if (fd == -1)
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@ -81,29 +79,44 @@ puffs_mount(struct puffs_vfsops *pvfs, struct puffs_vnops *pvn,
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pu = malloc(sizeof(struct puffs_usermount));
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if (!pu)
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eret(ENOMEM);
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return NULL;
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pu->pu_flags = pflags;
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pu->pu_pvfs = *pvfs;
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pu->pu_pvn = *pvn;
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pu->pu_fd = fd;
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if ((pu->pu_rootpath = strdup(dir)) == NULL)
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eret(ENOMEM);
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goto failfree;
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LIST_INIT(&pu->pu_pnodelst);
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if (mount(MOUNT_PUFFS, dir, mntflags, &pargs) == -1)
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return NULL;
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goto failfree;
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pu->pu_maxreqlen = pargs.pa_maxreqlen;
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if (pu->pu_pvfs.puffs_start(pu, &sreq) != 0)
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return NULL;
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if ((rv = pu->pu_pvfs.puffs_mount(pu, &sreq.psr_cookie)) != 0) {
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errno = rv;
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goto failfree;
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}
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/* tell kernel we're flying */
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if (ioctl(pu->pu_fd, PUFFSMOUNTOP, &sreq) == -1)
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return NULL;
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if (ioctl(pu->pu_fd, PUFFSSTARTOP, &sreq) == -1)
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goto failfree;
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/* finally, store fsidx and call start if appropriate */
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pu->pu_fsidx = sreq.psr_fsidx;
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if (pu->pu_pvfs.puffs_start) {
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if ((rv = pu->pu_pvfs.puffs_start(pu)) != 0) {
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errno = rv;
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goto failfree;
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}
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}
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return pu;
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failfree:
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/* can't unmount() from here for obvious reasons */
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if (fd)
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close(fd);
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free(pu);
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return NULL;
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}
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@ -156,11 +169,11 @@ puffs_getselectable(struct puffs_usermount *pu)
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}
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int
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puffs_setblockingmode(struct puffs_usermount *pu, int block)
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puffs_setblockingmode(struct puffs_usermount *pu, int mode)
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{
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int x;
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x = !block;
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x = mode;
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return ioctl(pu->pu_fd, FIONBIO, &x);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: puffs.h,v 1.4 2006/11/07 22:10:53 pooka Exp $ */
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/* $NetBSD: puffs.h,v 1.5 2006/11/09 13:11:01 pooka Exp $ */
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/*
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* Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved.
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@ -73,8 +73,8 @@ struct puffs_node {
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/* callbacks for operations */
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struct puffs_vfsops {
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int (*puffs_start)(struct puffs_usermount *,
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struct puffs_vfsreq_start *);
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int (*puffs_mount)(struct puffs_usermount *, void **);
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int (*puffs_start)(struct puffs_usermount *);
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int (*puffs_unmount)(struct puffs_usermount *, int, pid_t);
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int (*puffs_statvfs)(struct puffs_usermount *,
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struct statvfs *, pid_t);
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@ -138,10 +138,6 @@ struct puffs_vnops {
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void *, int, int *);
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int (*puffs_advlock)(struct puffs_usermount *,
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void *, void *, int, struct flock *, int);
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int (*puffs_getpages)(struct puffs_usermount *,
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void *, struct puffs_vnreq_getpages *);
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int (*puffs_putpages)(struct puffs_usermount *,
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void *, struct puffs_vnreq_putpages *);
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int (*puffs_getextattr)(struct puffs_usermount *,
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void *, struct puffs_vnreq_getextattr *);
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int (*puffs_setextattr)(struct puffs_usermount *,
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@ -173,6 +169,7 @@ struct puffs_usermount {
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struct puffs_node *pu_rootnode;
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const char * pu_rootpath;
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fsid_t pu_fsidx;
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LIST_HEAD(, puffs_node) pu_pnodelst;
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int pu_wcnt;
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@ -190,6 +187,9 @@ int puffs_getselectable(struct puffs_usermount *);
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int puffs_setblockingmode(struct puffs_usermount *, int);
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void puffs_dummyops(struct puffs_vnops *);
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#define PUFFSDEV_BLOCK 0
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#define PUFFSDEV_NONBLOCK 1
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struct puffs_node * puffs_newpnode(struct puffs_usermount *, void *,
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enum vtype);
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void puffs_putpnode(struct puffs_node *);
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@ -225,8 +225,8 @@ int puffs_cred_isjuggernaut(const struct puffs_cred *pcr);
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#define PUFFSVFS_PROTOS(fsname) \
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int fsname##_start(struct puffs_usermount *, \
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struct puffs_vfsreq_start *); \
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int fsname##_mount(struct puffs_usermount *, void **); \
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int fsname##_start(struct puffs_usermount *); \
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int fsname##_unmount(struct puffs_usermount *, int, pid_t); \
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int fsname##_statvfs(struct puffs_usermount *, \
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struct statvfs *, pid_t); \
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@ -294,10 +294,6 @@ int puffs_cred_isjuggernaut(const struct puffs_cred *pcr);
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void *, int, int *); \
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int fsname##_advlock(struct puffs_usermount *, \
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void *, void *, int, struct flock *, int); \
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int fsname##_getpages(struct puffs_usermount *, \
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void *, struct puffs_vnreq_getpages *); \
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int fsname##_putpages(struct puffs_usermount *, \
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void *, struct puffs_vnreq_putpages *); \
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int fsname##_getextattr(struct puffs_usermount *, \
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void *, struct puffs_vnreq_getextattr *); \
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int fsname##_setextattr(struct puffs_usermount *, \
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