81 lines
2 KiB
C
81 lines
2 KiB
C
/* This file takes care of those system calls that deal with time.
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*
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* The entry points into this file are
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* do_utime: perform the UTIME system call
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* do_stime: PM informs FS about STIME system call
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*/
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#include "fs.h"
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#include <minix/callnr.h>
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#include <minix/com.h>
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#include "file.h"
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#include "fproc.h"
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#include "param.h"
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#include <minix/vfsif.h>
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#include "vmnt.h"
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/*===========================================================================*
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* do_utime *
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*===========================================================================*/
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PUBLIC int do_utime()
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{
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/* Perform the utime(name, timep) system call. */
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register int len;
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struct utime_req req;
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struct lookup_req lookup_req;
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struct node_details res;
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int r;
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/* Adjust for case of 'timep' being NULL;
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* utime_strlen then holds the actual size: strlen(name)+1.
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*/
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len = m_in.utime_length;
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if (len == 0) len = m_in.utime_strlen;
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if (fetch_name(m_in.utime_file, len, M1) != OK) return(err_code);
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/* Fill in lookup request fields */
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lookup_req.path = user_fullpath;
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lookup_req.lastc = NULL;
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lookup_req.flags = EAT_PATH;
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/* Request lookup */
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if ((r = lookup(&lookup_req, &res)) != OK) return r;
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/* Fill in request fields.*/
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if (m_in.utime_length == 0) {
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req.actime = 0;
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req.modtime = clock_time();
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} else {
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req.actime = m_in.utime_actime;
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req.modtime = m_in.utime_modtime;
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}
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req.fs_e = res.fs_e;
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req.inode_nr = res.inode_nr;
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req.uid = fp->fp_effuid;
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req.gid = fp->fp_effgid;
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/* Issue request */
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return req_utime(&req);
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}
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/*===========================================================================*
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* do_stime *
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*===========================================================================*/
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PUBLIC int do_stime()
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{
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struct vmnt *vmp;
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/* Perform the stime(tp) system call. */
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boottime = (long) m_in.pm_stime;
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/* Send new time for all FS processes */
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for (vmp = &vmnt[0]; vmp < &vmnt[NR_MNTS]; ++vmp) {
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if (vmp->m_fs_e) req_stime(vmp->m_fs_e, boottime);
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}
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return OK;
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}
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