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RS live update support.

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This commit is contained in:
Cristiano Giuffrida
2010-07-09 18:29:04 +00:00
parent 895850b8cf
commit 8427d774b6
15 changed files with 348 additions and 123 deletions
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9
kernel/system/do_privctl.c
View File

@@ -59,6 +59,15 @@ PUBLIC int do_privctl(struct proc * caller, message * m_ptr)
RTS_UNSET(rp, RTS_NO_PRIV);
return(OK);
case SYS_PRIV_YIELD:
/* Allow process to run and suspend the caller. */
if (!RTS_ISSET(rp, RTS_NO_PRIV) || priv(rp)->s_proc_nr == NONE) {
return(EPERM);
}
RTS_SET(caller, RTS_NO_PRIV);
RTS_UNSET(rp, RTS_NO_PRIV);
return(OK);
case SYS_PRIV_DISALLOW:
/* Disallow process from running. */
if (RTS_ISSET(rp, RTS_NO_PRIV)) return(EPERM);

15
kernel/system/do_safecopy.c
View File

@@ -27,7 +27,7 @@ FORWARD _PROTOTYPE(int safecopy, (struct proc *, endpoint_t, endpoint_t,
cp_grant_id_t, int, int, size_t, vir_bytes, vir_bytes, int));
#define HASGRANTTABLE(gr) \
(!RTS_ISSET(gr, RTS_NO_PRIV) && priv(gr) && priv(gr)->s_grant_table > 0)
(priv(gr) && priv(gr)->s_grant_table)
/*===========================================================================*
* verify_grant *
@@ -67,7 +67,12 @@ endpoint_t *e_granter; /* new granter (magic grants) */
* priv. structure, or the grant table in the priv. structure
* is too small for the grant, return EPERM.
*/
if(!HASGRANTTABLE(granter_proc)) return EPERM;
if(!HASGRANTTABLE(granter_proc)) {
printf(
"grant verify failed: granter %d has no grant table\n",
granter);
return(EPERM);
}
if(priv(granter_proc)->s_grant_entries <= grant) {
printf(
@@ -244,7 +249,11 @@ int access; /* CPF_READ for a copy from granter to grantee, CPF_WRITE
/* See if there is a reasonable grant table. */
if(!(granter_p = endpoint_lookup(granter))) return EINVAL;
if(!HASGRANTTABLE(granter_p)) return EPERM;
if(!HASGRANTTABLE(granter_p)) {
printf(
"safecopy failed: granter %d has no grant table\n", granter);
return(EPERM);
}
/* Decide who is src and who is dst. */
if(access & CPF_READ) {