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authorRoland McGrath <roland@gnu.org>2002-03-24 03:44:57 +0000
committerRoland McGrath <roland@gnu.org>2002-03-24 03:44:57 +0000
commit4e6117f3996680e521527e6b4bdac1d306a2ddcf (patch)
tree47ad03a55cb5243bf189de72b36e813c8f5d556e /sysdeps
parent4caf4f3c256ebb79f08880d3d5176d16b9936671 (diff)
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* sysdeps/unix/bsd/bsd4.4/bits/socket.h (struct cmsgcred): New type.
(CMGROUP_MAX): New macro.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/bsd/bsd4.4/bits/socket.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/sysdeps/unix/bsd/bsd4.4/bits/socket.h b/sysdeps/unix/bsd/bsd4.4/bits/socket.h
index 8d442aa..40131d2 100644
--- a/sysdeps/unix/bsd/bsd4.4/bits/socket.h
+++ b/sysdeps/unix/bsd/bsd4.4/bits/socket.h
@@ -1,5 +1,5 @@
/* System-specific socket constants and types. 4.4 BSD version.
- Copyright (C) 1991,92,1994-1999,2000,2001 Free Software Foundation, Inc.
+ Copyright (C) 1991,92,1994-1999,2000,01,02 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -255,10 +255,30 @@ enum
#define SCM_RIGHTS SCM_RIGHTS
SCM_TIMESTAMP = 0x02, /* Timestamp (struct timeval). */
#define SCM_TIMESTAMP SCM_TIMESTAMP
- SCM_CREDS = 0x03 /* Process creds (strcm cmsgcred). */
+ SCM_CREDS = 0x03 /* Process creds (struct cmsgcred). */
#define SCM_CREDS SCM_CREDS
};
+/* Unfortunately, BSD practice dictates this structure be of fixed size.
+ If there are more than CMGROUP_MAX groups, the list is truncated.
+ (On GNU systems, the `cmcred_euid' field is just the first in the
+ list of effective UIDs.) */
+#define CMGROUP_MAX 16
+
+/* Structure delivered by SCM_CREDS. This describes the identity of the
+ sender of the data simultaneously received on the socket. By BSD
+ convention, this is included only when a sender on a AF_LOCAL socket
+ sends cmsg data of this type and size; the sender's structure is
+ ignored, and the system fills in the various IDs of the sender process. */
+struct cmsgcred
+ {
+ __pid_t cmcred_pid;
+ __uid_t cmcred_uid;
+ __uid_t cmcred_euid;
+ __gid_t cmcred_gid;
+ int cmcred_ngroups;
+ __gid_t cmcred_groups[CMGROUP_MAX];
+ };
/* Protocol number used to manipulate socket-level options
with `getsockopt' and `setsockopt'. */