naminit.c File Reference

（Syntactic）名前空間を初期化する。 More...

#include <xinu.h>

Include dependency graph for naminit.c:

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Macros
#define	FILESYS   SYSERR
#define	LFILESYS   SYSERR
#define	RFILESYS   SYSERR

Functions
status	naminit (void)

Variables
struct nmentry	nametab [NNAMES]
	名前マッピングのテーブル More...
int32	nnames
	割り当てられたネームテーブルエントリの数 More...

Detailed Description

（Syntactic）名前空間を初期化する。

Definition in file naminit.c.

Macro Definition Documentation

FILESYS

#define FILESYS   SYSERR

Definition at line 15 of file naminit.c.

LFILESYS

#define LFILESYS   SYSERR

Definition at line 19 of file naminit.c.

Referenced by naminit().

RFILESYS

#define RFILESYS   SYSERR

Definition at line 11 of file naminit.c.

Referenced by naminit().

Function Documentation

naminit()

status naminit

(

void

)

Definition at line 29 of file naminit.c.

References devtab, dentry::dvname, dentry::dvnum, kprintf(), LFILESYS, mount(), NDEVS, NM_MAXLEN, nnames, NULLCH, NULLDEV, NULLSTR, OK, RFILESYS, and SYSERR.

{
    did32 i;                    /* Index into devtab        */
    struct dentry *devptr;      /* Pointer to device table entry*/
    char tmpstr[NM_MAXLEN];     /* String to hold a name    */
    status retval;              /* Return value         */
    char *tptr;                 /* Pointer into tempstring  */
    char *nptr;                 /* Pointer to device name   */
    char devprefix[] = "/dev/"; /* Prefix to use for devices    */
    int32 len;                  /* Length of created name   */
    char ch;                    /* Storage for a character  */

    /* Set prefix table to empty */

    nnames = 0;

    for (i = 0; i < NDEVS; i++)
    {
        tptr = tmpstr;
        nptr = devprefix;

        /* Copy prefix into tmpstr */

        len = 0;
        while ((*tptr++ = *nptr++) != NULLCH)
        {
            len++;
        }
        tptr--; /* Move pointer to position before NULLCH */
        devptr = &devtab[i];
        nptr = devptr->dvname; /* Move to device name */

        /* Map device name to lower case and append */

        while (++len < NM_MAXLEN)
        {
            ch = *nptr++;
            if ((ch >= 'A') && (ch <= 'Z'))
            {
                ch += 'a' - 'A';
            }
            if ((*tptr++ = ch) == NULLCH)
            {
                break;
            }
        }

        if (len > NM_MAXLEN)
        {
            kprintf("namespace: device name %s too long\r\n",
                    devptr->dvname);
            continue;
        }

        retval = mount(tmpstr, NULLSTR, devptr->dvnum);
        if (retval == SYSERR)
        {
            kprintf("namespace: cannot mount device %d\r\n",
                    devptr->dvname);
            continue;
        }
    }

    /* Add other prefixes (longest prefix first) */

    mount("/dev/null", "", NULLDEV);
    mount("/remote/", "remote:", RFILESYS);
    mount("/local/", NULLSTR, LFILESYS);
    mount("/dev/", NULLSTR, SYSERR);
    mount("~/", NULLSTR, LFILESYS);
    mount("/", "root:", RFILESYS);
    mount("", "", LFILESYS);

    return OK;
}

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Variable Documentation

nametab

struct nmentry nametab[NNAMES]

名前マッピングのテーブル

Definition at line 22 of file naminit.c.

Referenced by mount(), and namrepl().

nnames

int32 nnames

割り当てられたネームテーブルエントリの数

Definition at line 23 of file naminit.c.

Referenced by mount(), naminit(), nammap(), and namrepl().