118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/* Created (MFS based):
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* February 2010 (Evgeniy Ivanov)
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*/
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#include "fs.h"
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#include <assert.h>
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#include <stdarg.h>
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#include "puffs.h"
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#include "puffs_priv.h"
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/*===========================================================================*
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* no_sys *
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*===========================================================================*/
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int no_sys()
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{
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/* Somebody has used an illegal system call number */
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lpuffs_debug("no_sys: invalid call %d\n", req_nr);
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return(EINVAL);
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}
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/*===========================================================================*
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* mfs_nul *
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*===========================================================================*/
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void mfs_nul_f(const char *file, int line, char *str, unsigned int len,
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unsigned int maxlen)
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{
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if (len < maxlen && str[len-1] != '\0') {
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lpuffs_debug("%s:%d string (length %d,maxlen %d) not null-terminated\n",
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file, line, len, maxlen);
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}
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}
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/*===========================================================================*
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* clock_timespec *
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*===========================================================================*/
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struct timespec clock_timespec()
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{
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/* This routine returns the time in seconds since 1.1.1970. MINIX is an
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* astrophysically naive system that assumes the earth rotates at a constant
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* rate and that such things as leap seconds do not exist.
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*/
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static long system_hz = 0;
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register int k;
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struct timespec tv;
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clock_t uptime;
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clock_t realtime;
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time_t boottime;
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if (system_hz == 0) system_hz = sys_hz();
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if ((k=getuptime(&uptime, &realtime, &boottime)) != OK)
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panic("clock_timespec: getuptime failed: %d", k);
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tv.tv_sec = (time_t) (boottime + (realtime/system_hz));
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/* We do not want to overflow, and system_hz can be as high as 50kHz */
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assert(system_hz < LONG_MAX/40000);
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tv.tv_nsec = (realtime%system_hz) * 40000 / system_hz * 25000;
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return tv;
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}
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/*===========================================================================*
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* update_timens *
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*===========================================================================*/
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int update_timens(struct puffs_node *pn, int flags, struct timespec *t)
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{
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int r;
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struct vattr va;
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struct timespec new_time;
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PUFFS_MAKECRED(pcr, &global_kcred);
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if (!flags)
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return 0;
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if (global_pu->pu_ops.puffs_node_setattr == NULL)
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return EINVAL;
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new_time = t != NULL ? *t : clock_timespec();
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puffs_vattr_null(&va);
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/* librefuse modifies atime and mtime together,
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* so set old values to avoid setting either one
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* to PUFFS_VNOVAL (set by puffs_vattr_null).
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*/
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va.va_atime = pn->pn_va.va_atime;
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va.va_mtime = pn->pn_va.va_mtime;
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if (flags & ATIME)
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va.va_atime = new_time;
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if (flags & MTIME)
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va.va_mtime = new_time;
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if (flags & CTIME)
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va.va_ctime = new_time;
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r = global_pu->pu_ops.puffs_node_setattr(global_pu, pn, &va, pcr);
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return(r);
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}
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/*===========================================================================*
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* lpuffs_debug *
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*===========================================================================*/
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void lpuffs_debug(const char *format, ...)
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{
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char buffer[256];
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va_list args;
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va_start (args, format);
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vsprintf (buffer,format, args);
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printf("%s: %s", fs_name, buffer);
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va_end (args);
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}
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