59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include "fs.h"
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#include "inode.h"
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#include "super.h"
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/*===========================================================================*
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* fs_chmod *
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*===========================================================================*/
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int fs_chmod(ino_t ino_nr, mode_t *mode)
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{
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/* Perform the chmod(name, mode) system call. */
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register struct inode *rip;
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/* Temporarily open the file. */
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if( (rip = get_inode(fs_dev, ino_nr)) == NULL)
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return(EINVAL);
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if(rip->i_sp->s_rd_only) {
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put_inode(rip);
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return EROFS;
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}
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/* Now make the change. Clear setgid bit if file is not in caller's grp */
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rip->i_mode = (rip->i_mode & ~ALL_MODES) | (*mode & ALL_MODES);
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rip->i_update |= CTIME;
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IN_MARKDIRTY(rip);
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/* Return full new mode to caller. */
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*mode = rip->i_mode;
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put_inode(rip);
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return(OK);
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}
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/*===========================================================================*
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* fs_chown *
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*===========================================================================*/
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int fs_chown(ino_t ino_nr, uid_t uid, gid_t gid, mode_t *mode)
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{
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register struct inode *rip;
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/* Temporarily open the file. */
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if( (rip = get_inode(fs_dev, ino_nr)) == NULL)
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return(EINVAL);
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rip->i_uid = uid;
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rip->i_gid = gid;
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rip->i_mode &= ~(I_SET_UID_BIT | I_SET_GID_BIT);
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rip->i_update |= CTIME;
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IN_MARKDIRTY(rip);
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/* Update caller on current mode, as it may have changed. */
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*mode = rip->i_mode;
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put_inode(rip);
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return(OK);
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}
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