126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
#include "inc.h"
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#include <assert.h>
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#include <sys/stat.h>
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#include <sys/statvfs.h>
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#include <minix/com.h>
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#include <string.h>
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#include <time.h>
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#include <minix/vfsif.h>
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/*===========================================================================*
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* stat_dir_record *
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*===========================================================================*/
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static int stat_dir_record(
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register struct dir_record *dir, /* pointer to dir record to stat */
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int pipe_pos, /* position in a pipe, supplied by fstat() */
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endpoint_t who_e, /* Caller endpoint */
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cp_grant_id_t gid /* grant for the stat buf */
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)
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{
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/* This function returns all the info about a particular inode. It's missing
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* the recording date because of a bug in the standard functions stdtime.
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* Once the bug is fixed the function can be called inside this function to
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* return the date. */
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/* Common code for stat and fstat system calls. */
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struct stat statbuf;
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int r;
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struct tm ltime;
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time_t time1;
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u32_t blocks;
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blocks = v_pri.volume_space_size_l;
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/* The unit of blocks should be 512 */
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assert(v_pri.logical_block_size_l >= 512);
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blocks = blocks * (v_pri.logical_block_size_l >> 9);
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memset(&statbuf, 0, sizeof(struct stat));
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statbuf.st_dev = fs_dev; /* the device of the file */
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statbuf.st_ino = ID_DIR_RECORD(dir); /* the id of the dir record */
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statbuf.st_mode = dir->d_mode; /* flags of the file */
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statbuf.st_nlink = dir->d_count; /* times this file is used */
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statbuf.st_uid = 0; /* user root */
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statbuf.st_gid = 0; /* group operator */
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statbuf.st_rdev = NO_DEV;
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statbuf.st_size = dir->d_file_size; /* size of the file */
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statbuf.st_blksize = v_pri.logical_block_size_l;
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statbuf.st_blocks = blocks;
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ltime.tm_year = dir->rec_date[0];
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ltime.tm_mon = dir->rec_date[1] - 1;
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ltime.tm_mday = dir->rec_date[2];
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ltime.tm_hour = dir->rec_date[3];
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ltime.tm_min = dir->rec_date[4];
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ltime.tm_sec = dir->rec_date[5];
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ltime.tm_isdst = 0;
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if (dir->rec_date[6] != 0)
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ltime.tm_hour += dir->rec_date[6] / 4;
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time1 = mktime(<ime);
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statbuf.st_atime = time1;
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statbuf.st_mtime = time1;
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statbuf.st_ctime = time1;
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/* Copy the struct to user space. */
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r = sys_safecopyto(who_e, gid, 0, (vir_bytes) &statbuf,
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(phys_bytes) sizeof(statbuf));
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return(r);
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}
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/*===========================================================================*
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* fs_stat *
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*===========================================================================*/
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int fs_stat()
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{
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register int r; /* return value */
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struct dir_record *dir;
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r = EINVAL;
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if ((dir = get_dir_record(fs_m_in.m_vfs_fs_stat.inode)) != NULL) {
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r = stat_dir_record(dir, 0, fs_m_in.m_source, fs_m_in.m_vfs_fs_stat.grant);
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release_dir_record(dir);
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}
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return(r);
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}
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/*===========================================================================*
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* fs_statvfs *
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*===========================================================================*/
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int fs_statvfs()
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{
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struct statvfs st;
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int r;
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memset(&st, 0, sizeof(st));
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st.f_bsize = v_pri.logical_block_size_l;
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st.f_frsize = st.f_bsize;
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st.f_iosize = st.f_bsize;
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st.f_blocks = v_pri.volume_space_size_l;
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st.f_namemax = NAME_MAX;
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/* Copy the struct to user space. */
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r = sys_safecopyto(fs_m_in.m_source, fs_m_in.m_vfs_fs_statvfs.grant, 0,
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(vir_bytes) &st, (phys_bytes) sizeof(st));
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return(r);
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}
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/*===========================================================================*
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* blockstats *
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*===========================================================================*/
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void fs_blockstats(u64_t *blocks, u64_t *free, u64_t *used)
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{
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*used = *blocks = v_pri.volume_space_size_l;
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*free = 0;
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}
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