write.c File Reference

#include <xinu.h>

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Functions
syscall	write (did32 descrp, char *buffer, uint32 count)

Function Documentation

write()

syscall write	(	did32	descrp,
		char *	buffer,
		uint32	count
	)

Definition at line 9 of file write.c.

References devtab, disable(), dentry::dvwrite, isbaddev, restore(), and SYSERR.

Referenced by arp_in(), arp_resolve(), ip_out(), lfdballoc(), lfdbfree(), lfflush(), lfiballoc(), lfibput(), lfscreate(), and xsh_rdstest().

{
    intmask     mask;       /* Saved interrupt mask     */
    struct dentry   *devptr;    /* Entry in device switch table */
    int32       retval;     /* Value to return to caller    */

    mask = disable();
    if (isbaddev(descrp)) {
        restore(mask);
        return SYSERR;
    }
    devptr = (struct dentry *) &devtab[descrp];
    retval = (*devptr->dvwrite) (devptr, buffer, count);
    restore(mask);
    return retval;
}

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