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
38 lines
767 B
C
38 lines
767 B
C
#include "syslib.h"
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#include <unistd.h>
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#include <string.h>
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/*
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* Return a negative error code if the query itself or the processing of the
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* query resulted in an error.
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* Return 1 if there are more processes waiting to be queried.
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* Return 0 if there are no more processes.
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* Note that for the return value of 0 and 1, the 'endpt' is set accordingly.
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*/
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int
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vm_query_exit(int *endpt)
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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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r = _taskcall(VM_PROC_NR, VM_QUERY_EXIT, &m);
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if (r != OK)
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return r;
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if (endpt == NULL)
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return EFAULT;
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*endpt = m.VM_QUERY_RET_PT;
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return (m.VM_QUERY_IS_MORE ? 1 : 0);
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}
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int
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vm_watch_exit(endpoint_t ep)
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{
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message m;
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memset(&m, 0, sizeof(m));
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m.VM_WE_EP = ep;
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return _taskcall(VM_PROC_NR, VM_WATCH_EXIT, &m);
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}
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