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Change the NFS sillyrename convention so that we won't run out

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of sillyrenames (which were limited to 58 per pid per directory,
for no good reason). The new format of sillyrenames looks like

	.nfs.0000b31a.00d24.4
	     ^^^^^^^^ ^^^^^
	     ticks    pid

Submitted by:	Mohan Srinivasan mohans at yahoo-inc dot com
Obtained from:	Yahoo!
This commit is contained in:
Paul Saab 2004-12-16 19:28:37 +00:00
parent 3f8718c17d
commit cb36cd34b8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=138919
2 changed files with 18 additions and 12 deletions
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28
sys/nfsclient/nfs_vnops.c
View File

@ -2448,6 +2448,7 @@ nfs_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
struct nfsnode *np;
int error;
short pid;
unsigned int lticks;
cache_purge(dvp);
np = VTONFS(vp);
@ -2462,18 +2463,23 @@ nfs_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
sp->s_removeit = nfs_removeit;
VREF(dvp);
/* Fudge together a funny name */
/*
* Fudge together a funny name.
* Changing the format of the funny name to accomodate more
* sillynames per directory.
* The name is now changed to .nfs.<ticks>.<pid>.4, where ticks is
* CPU ticks since boot.
*/
pid = cnp->cn_thread->td_proc->p_pid;
sp->s_namlen = sprintf(sp->s_name, ".nfsA%04x4.4", pid);
/* Try lookitups until we get one that isn't there */
while (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
cnp->cn_thread, NULL) == 0) {
sp->s_name[4]++;
if (sp->s_name[4] > 'z') {
error = EINVAL;
goto bad;
}
lticks = (unsigned int)ticks;
for ( ; ; ) {
sp->s_namlen = sprintf(sp->s_name,
".nfs.%08x.%04x4.4", lticks,
pid);
if (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
cnp->cn_thread, NULL))
break;
lticks++;
}
error = nfs_renameit(dvp, cnp, sp);
if (error)

2
sys/nfsclient/nfsnode.h
View File

@ -49,7 +49,7 @@ struct sillyrename {
struct vnode *s_dvp;
int (*s_removeit)(struct sillyrename *sp);
long s_namlen;
char s_name[20];
char s_name[32];
};
/*