80bd109cd3
- move system calls for use by services from libminlib into libsys; - move srv_fork(2) and srv_kill(2) from RS and into libsys; - replace getprocnr(2) with sef_self(3); - rename previous getnprocnr(2) to getprocnr(2); - clean up getepinfo(2); - change all libsys calls that used _syscall to use _taskcall, so as to avoid going through errno to pass errors; this is already how most calls work anyway, and many of the calls previously using _syscall were already assumed to return the actual error; - initialize request messages to zero, for future compatibility (note that this does not include PCI calls, which are in need of a much bigger overhaul, nor kernel calls); - clean up more of dead DS code as a side effect. Change-Id: I8788f54c68598fcf58e23486e270c2d749780ebb
76 lines
1.1 KiB
C
76 lines
1.1 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/ucred.h>
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static 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.PM_GETEPINFO_ENDPT = proc_ep;
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if ((r = _taskcall(PM_PROC_NR, GETEPINFO, &m)) < 0)
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return r;
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if (uid != NULL)
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*uid = m.PM_GETEPINFO_UID;
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if (gid != NULL)
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*gid = m.PM_GETEPINFO_GID;
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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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getnucred(endpoint_t proc_ep, struct uucred *ucred)
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{
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uid_t uid;
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gid_t gid;
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int r;
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if (ucred == NULL)
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return EFAULT;
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if ((r = getepinfo(proc_ep, &uid, &gid)) < 0)
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return r;
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/* Only two fields are used for now; ensure the rest is zeroed out. */
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memset(ucred, 0, sizeof(struct uucred));
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ucred->cr_uid = uid;
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ucred->cr_gid = gid;
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return r;
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}
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