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
29 lines
537 B
C
29 lines
537 B
C
#include "syslib.h"
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#include <unistd.h>
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#include <string.h>
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#include <minix/safecopies.h>
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int
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checkperms(endpoint_t endpt, char *path, size_t size)
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{
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cp_grant_id_t grant;
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message m;
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int r;
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if ((grant = cpf_grant_direct(VFS_PROC_NR, (vir_bytes) path, size,
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CPF_READ | CPF_WRITE)) == GRANT_INVALID)
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return ENOMEM;
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memset(&m, 0, sizeof(m));
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m.VFS_CHECKPERMS_ENDPT = endpt;
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m.VFS_CHECKPERMS_GRANT = grant;
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m.VFS_CHECKPERMS_COUNT = size;
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r = _taskcall(VFS_PROC_NR, VFS_CHECKPERMS, &m);
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cpf_revoke(grant);
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return r;
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}
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