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FBSD restore old syscall register logic for older kernels

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The syscall_register code appears to depend on coordination
with FreeBSD upstream, which hopefully can be completed by
RELENG_9.  Use the original code for installation of the AFS
syscall everything older than that.

Change-Id: I2954cf1a2ae3587a311e8133ec5cdc500b4e2e24
Reviewed-on: http://gerrit.openafs.org/2618
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
This commit is contained in:
Matt Benjamin 2010-08-26 22:54:20 -04:00 committed by Derrick Brashear
parent a9958b34a9
commit df4cf75b97
1 changed files with 24 additions and 2 deletions
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26
src/afs/FBSD/osi_vfsops.c
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@ -20,6 +20,9 @@ int afs_pbuf_freecnt = -1;
extern int Afs_xsetgroups();
extern int afs_xioctl();
#if !defined(AFS_FBSD90_ENV)
static sy_call_t *old_handler;
#else
static struct sysent old_sysent;
static struct sysent afs_sysent = {
@ -38,32 +41,51 @@ static struct sysent afs_sysent = {
#endif
#endif /* FBSD60 */
};
#endif /* FBSD90 */
int
afs_init(struct vfsconf *vfc)
{
int code;
int offset = AFS_SYSCALL;
#if defined(AFS_FBSD90_ENV)
code = syscall_register(&offset, &afs_sysent, &old_sysent);
if (code) {
printf("AFS_SYSCALL in use, error %i. aborting\n", code);
return code;
}
#else
if (sysent[AFS_SYSCALL].sy_call != nosys
&& sysent[AFS_SYSCALL].sy_call != lkmnosys) {
printf("AFS_SYSCALL in use. aborting\n");
return EBUSY;
}
#endif
osi_Init();
afs_pbuf_freecnt = nswbuf / 2 + 1;
#if !defined(AFS_FBSD90_ENV)
old_handler = sysent[AFS_SYSCALL].sy_call;
sysent[AFS_SYSCALL].sy_call = afs3_syscall;
sysent[AFS_SYSCALL].sy_narg = 5;
#endif
return 0;
}
int
afs_uninit(struct vfsconf *vfc)
{
#if defined(AFS_FBSD90_ENV)
int offset = AFS_SYSCALL;
#endif
if (afs_globalVFS)
return EBUSY;
#if defined(AFS_FBSD90_ENV)
syscall_deregister(&offset, &old_sysent);
#else
sysent[AFS_SYSCALL].sy_narg = 0;
sysent[AFS_SYSCALL].sy_call = old_handler;
#endif
return 0;
}