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FBSD: properly register our syscall

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Use the provided interface, syscall_register(), instead of
manually tweaking the sysent table.
Starting afsd will still fail at present on FreeBSD HEAD
without an additional kernel patch to syscalls.master.

Change-Id: I18db7c8b74dbd114165f7617df25e462cb372e88
Reviewed-on: http://gerrit.openafs.org/2616
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
This commit is contained in:
Ben Kaduk 2010-08-25 23:21:30 -04:00 committed by Derrick Brashear
parent 2ea508ea0f
commit 5b71bab4ff
1 changed files with 28 additions and 18 deletions
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46
src/afs/FBSD/osi_vfsops.c
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@ -20,40 +20,50 @@ int afs_pbuf_freecnt = -1;
extern int Afs_xsetgroups();
extern int afs_xioctl();
static sy_call_t *old_handler;
static struct sysent old_sysent;
static struct sysent afs_sysent = {
5, /* int sy_narg */
afs3_syscall, /* sy_call_t *sy_call */
#ifdef AFS_FBSD60_ENV
AUE_NULL, /* au_event_t sy_auevent */
#ifdef AFS_FBSD70_ENV
NULL, /* systrace_args_funt_t sy_systrace_args_func */
0, /* u_int32_t sy_entry */
0, /* u_int32_t sy_return */
#ifdef AFS_FBSD90_ENV
0, /* u_int32_t sy_flags */
0 /* u_int32_t sy_thrcnt */
#endif
#endif
#endif /* FBSD60 */
};
int
afs_init(struct vfsconf *vfc)
{
if (sysent[AFS_SYSCALL].sy_call != nosys
&& sysent[AFS_SYSCALL].sy_call != lkmnosys) {
printf("AFS_SYSCALL in use. aborting\n");
return EBUSY;
int code;
int offset = AFS_SYSCALL;
code = syscall_register(&offset, &afs_sysent, &old_sysent);
if (code) {
printf("AFS_SYSCALL in use, error %i. aborting\n", code);
return code;
}
osi_Init();
afs_pbuf_freecnt = nswbuf / 2 + 1;
#if 0
sysent[SYS_setgroups].sy_call = Afs_xsetgroups;
sysent[SYS_ioctl].sy_call = afs_xioctl;
#endif
old_handler = sysent[AFS_SYSCALL].sy_call;
sysent[AFS_SYSCALL].sy_call = afs3_syscall;
sysent[AFS_SYSCALL].sy_narg = 5;
return 0;
}
int
afs_uninit(struct vfsconf *vfc)
{
int offset = AFS_SYSCALL;
if (afs_globalVFS)
return EBUSY;
#if 0
sysent[SYS_ioctl].sy_call = ioctl;
sysent[SYS_setgroups].sy_call = setgroups;
#endif
sysent[AFS_SYSCALL].sy_narg = 0;
sysent[AFS_SYSCALL].sy_call = old_handler;
syscall_deregister(&offset, &old_sysent);
return 0;
}