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drop from segments physcopy/vircopy invocations

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. sys_vircopy always uses D for both src and dst
	. sys_physcopy uses PHYS_SEG if and only if corresponding
	  endpoint is NONE, so we can derive the mode (PHYS_SEG or D)
	  from the endpoint arg in the kernel, dropping the seg args
	. fields in msg still filled in for backwards compatability,
	  using same NONE-logic in the library
This commit is contained in:
Ben Gras
2012-06-18 12:28:40 +00:00
parent 0e35eb0c6b
commit 0fb2f83da9
17 changed files with 62 additions and 64 deletions
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servers/pm/misc.c
+4 -4
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@@ -94,8 +94,8 @@ int do_sysuname()
/* Copy an uname string to the user. */
n = strlen(string) + 1;
if (n > m_in.sysuname_len) n = m_in.sysuname_len;
r = sys_vircopy(SELF, D, (phys_bytes) string,
mp->mp_endpoint, D, (phys_bytes) m_in.sysuname_value,
r = sys_vircopy(SELF, (phys_bytes) string,
mp->mp_endpoint, (phys_bytes) m_in.sysuname_value,
(phys_bytes) n);
if (r < 0) return(r);
break;
@@ -107,8 +107,8 @@ int do_sysuname()
if (mp->mp_effuid != 0 || len == 0) return(EPERM);
n = len < m_in.sysuname_len ? len : m_in.sysuname_len;
if (n <= 0) return(EINVAL);
r = sys_vircopy(mp->mp_endpoint, D, (phys_bytes) m_in.sysuname_value,
SELF, D, (phys_bytes) tmp, (phys_bytes) n);
r = sys_vircopy(mp->mp_endpoint, (phys_bytes) m_in.sysuname_value,
SELF, (phys_bytes) tmp, (phys_bytes) n);
if (r < 0) return(r);
tmp[n-1] = 0;
strcpy(string, tmp);