ef0a265086
* VFS and installed MFSes must be in sync before and after this change * Use struct stat from NetBSD. It requires adding new STAT, FSTAT and LSTAT syscalls. Libc modification is both backward and forward compatible. Also new struct stat uses modern field sizes to avoid ABI incompatibility, when we update uid_t, gid_t and company. Exceptions are ino_t and off_t in old libc (though paddings added).
141 lines
3.9 KiB
C
141 lines
3.9 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/statfs.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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PRIVATE 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), D);
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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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PUBLIC 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.REQ_INODE_NR)) != NULL) {
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r = stat_dir_record(dir, 0, fs_m_in.m_source, fs_m_in.REQ_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_fstatfs *
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*===========================================================================*/
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PUBLIC int fs_fstatfs()
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{
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struct statfs st;
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int r;
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st.f_bsize = v_pri.logical_block_size_l;
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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.REQ_GRANT, 0,
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(vir_bytes) &st, (phys_bytes) sizeof(st), D);
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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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PUBLIC int fs_statvfs()
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{
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struct statvfs st;
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int r;
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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_blocks = v_pri.volume_space_size_l;
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st.f_bfree = 0;
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st.f_bavail = 0;
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st.f_files = 0;
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st.f_ffree = 0;
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st.f_favail = 0;
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st.f_fsid = fs_dev;
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st.f_flag = ST_RDONLY;
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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.REQ_GRANT, 0, (vir_bytes) &st,
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(phys_bytes) sizeof(st), D);
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return(r);
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}
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