bfa518c7ec
The service-only getepinfo(2) PM call returns information about a given endpoint. This patch extends that call so that it returns enough information to allow correctly filling a sockcred structure. A new getsockcred(3) function is added to libsys to fill an actual sockcred structure with the obtained information. However, for the caller's convenience, the groups list is kept separate. Change-Id: I9f1a6d1a221c77eabaa3498ff4ec9a5fb922e4fd
81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
#include "syslib.h"
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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pid_t
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getepinfo(endpoint_t proc_ep, uid_t *uid, gid_t *gid)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.m_lsys_pm_getepinfo.endpt = proc_ep;
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m.m_lsys_pm_getepinfo.groups = (vir_bytes)NULL;
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m.m_lsys_pm_getepinfo.ngroups = 0;
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if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
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return r;
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if (uid != NULL)
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*uid = m.m_pm_lsys_getepinfo.euid;
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if (gid != NULL)
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*gid = m.m_pm_lsys_getepinfo.egid;
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return (pid_t) r;
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}
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pid_t
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getnpid(endpoint_t proc_ep)
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{
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return getepinfo(proc_ep, NULL, NULL);
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}
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uid_t
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getnuid(endpoint_t proc_ep)
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{
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uid_t uid;
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int r;
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if ((r = getepinfo(proc_ep, &uid, NULL)) < 0)
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return (uid_t) r;
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return uid;
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}
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gid_t
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getngid(endpoint_t proc_ep)
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{
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gid_t gid;
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int r;
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if ((r = getepinfo(proc_ep, NULL, &gid)) < 0)
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return (gid_t) r;
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return gid;
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}
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int
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getsockcred(endpoint_t proc_ep, struct sockcred * sockcred, gid_t * groups,
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int ngroups)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.m_lsys_pm_getepinfo.endpt = proc_ep;
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m.m_lsys_pm_getepinfo.groups = (vir_bytes)groups;
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m.m_lsys_pm_getepinfo.ngroups = ngroups;
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if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
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return r;
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sockcred->sc_uid = m.m_pm_lsys_getepinfo.uid;
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sockcred->sc_euid = m.m_pm_lsys_getepinfo.euid;
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sockcred->sc_gid = m.m_pm_lsys_getepinfo.gid;
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sockcred->sc_egid = m.m_pm_lsys_getepinfo.egid;
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sockcred->sc_ngroups = m.m_pm_lsys_getepinfo.ngroups;
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return OK;
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}
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