28 lines
558 B
C
28 lines
558 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.m_lsys_vfs_checkperms.endpt = endpt;
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m.m_lsys_vfs_checkperms.grant = grant;
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m.m_lsys_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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