kern_descrip.c (77978ab8bc1968d7606144ddc20b2a8a9f9b3382) kern_descrip.c (37b087a645354d60200c774d51b305b268e41c83)
1/*
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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815{
816 register struct filedesc0 *newfdp;
817 register struct filedesc *fdp = p->p_fd;
818
819 MALLOC(newfdp, struct filedesc0 *, sizeof(struct filedesc0),
820 M_FILEDESC, M_WAITOK);
821 bzero(newfdp, sizeof(struct filedesc0));
822 newfdp->fd_fd.fd_cdir = fdp->fd_cdir;
1/*
2 * Copyright (c) 1982, 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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815{
816 register struct filedesc0 *newfdp;
817 register struct filedesc *fdp = p->p_fd;
818
819 MALLOC(newfdp, struct filedesc0 *, sizeof(struct filedesc0),
820 M_FILEDESC, M_WAITOK);
821 bzero(newfdp, sizeof(struct filedesc0));
822 newfdp->fd_fd.fd_cdir = fdp->fd_cdir;
823 VREF(newfdp->fd_fd.fd_cdir);
823 if (newfdp->fd_fd.fd_cdir)
824 VREF(newfdp->fd_fd.fd_cdir);
824 newfdp->fd_fd.fd_rdir = fdp->fd_rdir;
825 newfdp->fd_fd.fd_rdir = fdp->fd_rdir;
825 VREF(newfdp->fd_fd.fd_rdir);
826 if (newfdp->fd_fd.fd_rdir)
827 VREF(newfdp->fd_fd.fd_rdir);
826 newfdp->fd_fd.fd_jdir = fdp->fd_jdir;
827 if (newfdp->fd_fd.fd_jdir)
828 VREF(newfdp->fd_fd.fd_jdir);
829
830 /* Create the file descriptor table. */
831 newfdp->fd_fd.fd_refcnt = 1;
832 newfdp->fd_fd.fd_cmask = cmask;
833 newfdp->fd_fd.fd_ofiles = newfdp->fd_dfiles;

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862
863 /* Certain daemons might not have file descriptors. */
864 if (fdp == NULL)
865 return (NULL);
866
867 MALLOC(newfdp, struct filedesc *, sizeof(struct filedesc0),
868 M_FILEDESC, M_WAITOK);
869 bcopy(fdp, newfdp, sizeof(struct filedesc));
828 newfdp->fd_fd.fd_jdir = fdp->fd_jdir;
829 if (newfdp->fd_fd.fd_jdir)
830 VREF(newfdp->fd_fd.fd_jdir);
831
832 /* Create the file descriptor table. */
833 newfdp->fd_fd.fd_refcnt = 1;
834 newfdp->fd_fd.fd_cmask = cmask;
835 newfdp->fd_fd.fd_ofiles = newfdp->fd_dfiles;

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864
865 /* Certain daemons might not have file descriptors. */
866 if (fdp == NULL)
867 return (NULL);
868
869 MALLOC(newfdp, struct filedesc *, sizeof(struct filedesc0),
870 M_FILEDESC, M_WAITOK);
871 bcopy(fdp, newfdp, sizeof(struct filedesc));
870 VREF(newfdp->fd_cdir);
871 VREF(newfdp->fd_rdir);
872 if (newfdp->fd_cdir)
873 VREF(newfdp->fd_cdir);
874 if (newfdp->fd_rdir)
875 VREF(newfdp->fd_rdir);
872 if (newfdp->fd_jdir)
873 VREF(newfdp->fd_jdir);
874 newfdp->fd_refcnt = 1;
875
876 /*
877 * If the number of open files fits in the internal arrays
878 * of the open file structure, use them, otherwise allocate
879 * additional memory for the number of descriptors currently

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940 if (--fdp->fd_refcnt > 0)
941 return;
942 fpp = fdp->fd_ofiles;
943 for (i = fdp->fd_lastfile; i-- >= 0; fpp++)
944 if (*fpp)
945 (void) closef(*fpp, p);
946 if (fdp->fd_nfiles > NDFILE)
947 FREE(fdp->fd_ofiles, M_FILEDESC);
876 if (newfdp->fd_jdir)
877 VREF(newfdp->fd_jdir);
878 newfdp->fd_refcnt = 1;
879
880 /*
881 * If the number of open files fits in the internal arrays
882 * of the open file structure, use them, otherwise allocate
883 * additional memory for the number of descriptors currently

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944 if (--fdp->fd_refcnt > 0)
945 return;
946 fpp = fdp->fd_ofiles;
947 for (i = fdp->fd_lastfile; i-- >= 0; fpp++)
948 if (*fpp)
949 (void) closef(*fpp, p);
950 if (fdp->fd_nfiles > NDFILE)
951 FREE(fdp->fd_ofiles, M_FILEDESC);
948 vrele(fdp->fd_cdir);
949 vrele(fdp->fd_rdir);
952 if (fdp->fd_cdir)
953 vrele(fdp->fd_cdir);
954 if (fdp->fd_rdir)
955 vrele(fdp->fd_rdir);
950 if (fdp->fd_jdir)
951 vrele(fdp->fd_jdir);
952 if (fdp->fd_knlist)
953 FREE(fdp->fd_knlist, M_TEMP);
954 if (fdp->fd_knhash)
955 FREE(fdp->fd_knhash, M_TEMP);
956 FREE(fdp, M_FILEDESC);
957}

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957 vrele(fdp->fd_jdir);
958 if (fdp->fd_knlist)
959 FREE(fdp->fd_knlist, M_TEMP);
960 if (fdp->fd_knhash)
961 FREE(fdp->fd_knhash, M_TEMP);
962 FREE(fdp, M_FILEDESC);
963}

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