[Xenomai-git] Philippe Gerum : psos: export sm_ident() to userland

[GIT version control]

Module: xenomai-2.5
Branch: master
Commit: 26e916ecc3f8b71cd8ce4c4194555ee0cc4aa018
URL:    
http://git.xenomai.org/?p=xenomai-2.5.git;a=commit;h=26e916ecc3f8b71cd8ce4c4194555ee0cc4aa018

Author: Philippe Gerum <r...@xenomai.org>
Date:   Mon Nov 15 11:55:01 2010 +0100

psos: export sm_ident() to userland

---

 ksrc/skins/psos+/syscall.c |   33 +++++++++++++++++++++++++++++++++
 src/skins/psos+/sem.c      |    5 +++++
 2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/ksrc/skins/psos+/syscall.c b/ksrc/skins/psos+/syscall.c
index e064b42..cce63fe 100644
--- a/ksrc/skins/psos+/syscall.c
+++ b/ksrc/skins/psos+/syscall.c
@@ -967,6 +967,38 @@ static int __sm_v(struct pt_regs *regs)
 }
 
 /*
+ * int __sm_ident(const char *name, u_long *smid_r)
+ */
+
+static int __sm_ident(struct pt_regs *regs)
+{
+       char name[XNOBJECT_NAME_LEN];
+       u_long err, smid;
+       spl_t s;
+
+       /* Get sema4 name. */
+       if (__xn_safe_strncpy_from_user(name, (const char __user 
*)__xn_reg_arg1(regs),
+                                       sizeof(name)) < 0)
+               return -EFAULT;
+
+       xnlock_get_irqsave(&nklock, s);
+
+       err = sm_ident(name, 0, &smid);
+       if (err == SUCCESS) {
+               psossem_t *sem = (psossem_t *)smid;
+               smid = sem->handle;
+       }
+
+       xnlock_put_irqrestore(&nklock, s);
+
+       if (err == SUCCESS &&
+           __xn_safe_copy_to_user((void __user *)__xn_reg_arg2(regs), &smid,
+                                  sizeof(smid)))
+               return -EFAULT;
+
+       return err;
+}
+/*
  * u_long tm_wkafter(u_long ticks)
  */
 
@@ -1538,6 +1570,7 @@ static xnsysent_t __systab[] = {
        [__psos_sm_delete] = {&__sm_delete, __xn_exec_any},
        [__psos_sm_p] = {&__sm_p, __xn_exec_primary},
        [__psos_sm_v] = {&__sm_v, __xn_exec_any},
+       [__psos_sm_ident] = {&__sm_ident, __xn_exec_any},
        [__psos_rn_create] = {&__rn_create, __xn_exec_lostage},
        [__psos_rn_delete] = {&__rn_delete, __xn_exec_lostage},
        [__psos_rn_ident] = {&__rn_ident, __xn_exec_any},
diff --git a/src/skins/psos+/sem.c b/src/skins/psos+/sem.c
index 2ef8851..e37aaf8 100644
--- a/src/skins/psos+/sem.c
+++ b/src/skins/psos+/sem.c
@@ -41,3 +41,8 @@ u_long sm_v(u_long smid)
 {
        return XENOMAI_SKINCALL1(__psos_muxid, __psos_sm_v, smid);
 }
+
+u_long sm_ident(const char *name, u_long nodeno, u_long *smid_r)
+{
+       return XENOMAI_SKINCALL2(__psos_muxid, __psos_sm_ident, name, smid_r);
+}


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