inode.c File Reference

#include <schily/mconfig.h>
#include "mkisofs.h"
#include <schily/schily.h>

Include dependency graph for inode.c:

Go to the source code of this file.

Functions
EXPORT void do_inode	__PR ((struct directory *dpnt))
LOCAL void update_inode	__PR ((struct directory_entry *s_entry, int value))
EXPORT void	do_inode (struct directory *dpnt)
EXPORT void	do_dir_nlink (struct directory *dpnt)
LOCAL void	assign_inodes (struct directory *dpnt)
LOCAL void	compute_linkcount (struct directory *dpnt)
LOCAL void	assign_linkcount (struct directory *dpnt)
LOCAL void	update_inode (struct directory_entry *s_entry, int value)
LOCAL void	update_nlink (struct directory_entry *s_entry, int value)
LOCAL int	update_dir_nlink (struct directory *dpnt)

Variables
static UConst char	sccsid []
LOCAL UInt32_t	null_ino_high

Function Documentation

__PR() [1/2]

EXPORT void do_inode __PR

(

(struct directory *dpnt)

)

__PR() [2/2]

LOCAL void update_inode __PR

(

(struct directory_entry *s_entry, int value)

)

assign_inodes()

LOCAL void assign_inodes

(

struct directory *

dpnt

)

Definition at line 113 of file inode.c.

{
    struct directory_entry  *s_entry;
    struct file_hash    *s_hash;

    while (dpnt) {
        s_entry = dpnt->contents;
        for (s_entry = dpnt->contents; s_entry; s_entry = s_entry->next) {
            if (s_entry->starting_block == 0) {
                s_hash = find_hash(s_entry);
                /* find_directory_hash() ? */
                if (s_hash)
                    s_entry->starting_block = s_hash->starting_block;
            }
            if (s_entry->starting_block == 0 && s_entry->size != 0) {
                unsigned int e = get_733((char *)s_entry->isorec.extent);

                if (e != 0) {
                    errmsgno(EX_BAD,
                    _("Implementation botch, fetching extend %d for %s from dir entry.\n"),
                    e, s_entry->whole_name);
                }
            }
            if (use_RockRidge && s_entry->starting_block > 0)
                update_inode(s_entry, s_entry->starting_block);

            /*
             * Be careful: UDF Symlinks have size != 0, then
             * s_hash->starting_block is a valid inode number.
             */
            if (s_entry->size != 0)
                continue;
#ifdef  UDF
            if ((s_entry->de_flags & IS_SYMLINK) != 0 &&
                create_udfsymlinks)
                continue;
#else
            if ((s_entry->de_flags & IS_SYMLINK) != 0)
                continue;
#endif

            if (s_entry->isorec.flags[0] & ISO_DIRECTORY)
                continue;

            /*
             * Assign inodes to symbolic links.
             */
            if (s_entry->dev == UNCACHED_DEVICE && s_entry->inode == UNCACHED_INODE) {
                s_entry->dev = PREV_SESS_DEV;
                s_entry->inode = null_inodes;
            }
            s_hash = find_hash(s_entry);
            if (s_hash) {
                /*
                 * Paranoia: Check for hashed files without proper inode #.
                 */
                if (s_hash->starting_block <= last_extent)
                    comerrno(EX_BAD,
                    _("Implementation botch: Hashed file '%s' has illegal inode %u.\n"),
                    s_entry->whole_name ?
                    s_entry->whole_name : s_entry->name,
                    s_hash->starting_block);
                set_733((char *)s_entry->isorec.extent, s_hash->starting_block);
                s_entry->starting_block = s_hash->starting_block;
            } else {
                s_entry->starting_block = null_inodes--;
                set_733((char *)s_entry->isorec.extent, s_entry->starting_block);
                add_hash(s_entry);
            }
            if (use_RockRidge)
                update_inode(s_entry, s_entry->starting_block);
        }
        if (dpnt->subdir) {
            assign_inodes(dpnt->subdir);
        }

        dpnt = dpnt->next;
    }
}

Referenced by do_inode().

assign_linkcount()

LOCAL void assign_linkcount

(

struct directory *

dpnt

)

Definition at line 284 of file inode.c.

{
    struct directory_entry  *s_entry;
    struct file_hash    *s_hash;

    while (dpnt) {
        s_entry = dpnt->contents;
        for (s_entry = dpnt->contents; s_entry; s_entry = s_entry->next) {
            if (s_entry->isorec.flags[0] & ISO_DIRECTORY)
                continue;
            if (s_entry->de_flags & RELOCATED_DIRECTORY)
                continue;
            /*
             * skip resource files or file stream files
             */
            if (s_entry->de_flags & RESOURCE_FORK)
                continue;

            s_hash = find_hash(s_entry);
            if (s_hash) {
                update_nlink(s_entry, s_hash->nlink);
            } else {
                if (s_entry->dev == UNCACHED_DEVICE &&
                    s_entry->inode == TABLE_INODE) {
                    continue;
                }
                comerrno(EX_BAD,
                _("Implementation botch: File '%s' not hashed.\n"),
                    s_entry->whole_name ?
                    s_entry->whole_name : s_entry->name);
            }
        }
        if (dpnt->subdir) {
            assign_linkcount(dpnt->subdir);
        }

        dpnt = dpnt->next;
    }
}

Referenced by do_inode().

compute_linkcount()

LOCAL void compute_linkcount

(

struct directory *

dpnt

)

Definition at line 198 of file inode.c.

{
    struct directory_entry  *s_entry;
    struct file_hash    *s_hash;

    while (dpnt) {
        s_entry = dpnt->contents;
        for (s_entry = dpnt->contents; s_entry; s_entry = s_entry->next) {
            /*
             * Skip directories.
             */
            if (s_entry->isorec.flags[0] & ISO_DIRECTORY)
                continue;
            if (s_entry->de_flags & RELOCATED_DIRECTORY)
                continue;

            /*
             * skip resource files or file stream files
             * XXX should we assign a standard link count == 1 instead?
             */
            if (s_entry->de_flags & RESOURCE_FORK)
                continue;

            /*
             * Assign inodes to symbolic links.
             * We never come here in case that we create correct inodes,
             * except with UDF symlinks.
             */
            if (s_entry->dev == UNCACHED_DEVICE && s_entry->inode == UNCACHED_INODE) {
                s_entry->dev = PREV_SESS_DEV;

                /*
                 * With UDF symlinks, the starting_block is a
                 * valid inode number.
                 */
#ifdef  UDF
                if ((s_entry->de_flags & IS_SYMLINK) != 0 &&
                    create_udfsymlinks) {
#else
                if ((s_entry->de_flags & IS_SYMLINK) != 0) {
#endif
                    s_entry->inode = s_entry->starting_block;
                } else {
                    s_entry->inode = null_inodes--; /* Only used for caching */
                    if (correct_inodes)
                        comerrno(EX_BAD,
                        _("Implementation botch: Unhashed file '%s'.\n"),
                        s_entry->whole_name ?
                        s_entry->whole_name : s_entry->name);
                }
            }
            s_hash = find_hash(s_entry);
            if (s_hash) {
                s_hash->nlink++;
            } else {
                add_hash(s_entry);
                s_hash = find_hash(s_entry);
                if (s_hash == NULL) {
                    if (s_entry->dev == UNCACHED_DEVICE &&
                        s_entry->inode == TABLE_INODE) {
                        continue;
                    }
                    comerrno(EX_BAD,
                    _("Implementation botch: File '%s' not hashed (dev/ino %llX/%llX).\n"),
                    s_entry->whole_name ?
                    s_entry->whole_name : s_entry->name,
                    (Llong)s_entry->dev,
                    (Llong)s_entry->inode);
                }
                s_hash->nlink++;
            }
        }
        if (dpnt->subdir) {
            compute_linkcount(dpnt->subdir);
        }

        dpnt = dpnt->next;
    }
}

Referenced by do_inode().

do_dir_nlink()

EXPORT void do_dir_nlink

(

struct directory *

dpnt

)

Definition at line 85 of file inode.c.

{
    int rootlinks;

    if (!use_RockRidge)
        return;

    /*
     * Update everything except "/..".
     */
    rootlinks = update_dir_nlink(dpnt);
    if (reloc_dir)
        rootlinks--;    /* rr_moved is hidden */
    /*
     * Update "/." now.
     */
    update_nlink(dpnt->contents, rootlinks);
    /*
     * Update "/.." now.
     */
    update_nlink(dpnt->contents->next, rootlinks);
}

Referenced by dirtree_fixup().

do_inode()

EXPORT void do_inode

(

struct directory *

dpnt

)

Definition at line 55 of file inode.c.

{
    null_ino_high = null_inodes;

    if (correct_inodes)
        assign_inodes(root);

#ifdef  UDF
    if (!use_RockRidge && !use_udf)
        return;
#else
    if (!use_RockRidge)
        return;
#endif
    if (!cache_inodes)      /* Never FALSE if correct_inodes TRUE */
        return;

    compute_linkcount(dpnt);
    if (use_RockRidge)      /* If we have Rock Ridge extensions, */
        assign_linkcount(dpnt); /* reassign computed linkcount in RR */

    if (null_inodes < last_extent)
        comerrno(EX_BAD, _("Inode number overflow, too many files in file system.\n"));
}

Referenced by file_gen(), and read_bitmaps().

update_dir_nlink()

LOCAL int update_dir_nlink

(

struct directory *

dpnt

)

Definition at line 405 of file inode.c.

{
    struct directory *xpnt;
    struct directory_entry *s_entry;
    int     i = 0;

    while (dpnt) {
        if (dpnt->dir_flags & INHIBIT_ISO9660_ENTRY) {
            dpnt = dpnt->next;
            continue;
        }
        /*
         * First, count up the number of subdirectories this dir has.
         */
        for (i = 0, xpnt = dpnt->subdir; xpnt; xpnt = xpnt->next)
            if ((xpnt->dir_flags & INHIBIT_ISO9660_ENTRY) == 0)
                i++;
        /*
         * Next check to see if we have any relocated directories in
         * this directory. The nlink field will include these as
         * real directories when they are properly relocated.
         * In the non-rockridge disk, the relocated entries appear as
         * zero length files.
         */
        for (s_entry = dpnt->contents; s_entry;
                        s_entry = s_entry->next) {
            if ((s_entry->de_flags & RELOCATED_DIRECTORY) != 0 &&
                (s_entry->de_flags & INHIBIT_ISO9660_ENTRY) ==
                                    0) {
                i++;
            }
        }
        /*
         * Now update the field in the Rock Ridge entry.
         */
        update_nlink(dpnt->self, i + 2);

        /*
         * Update the '.' entry for this directory.
         */
        update_nlink(dpnt->contents, i + 2);

        /*
         * Update all of the '..' entries that point to this guy.
         */
        for (xpnt = dpnt->subdir; xpnt; xpnt = xpnt->next) {
            update_nlink(xpnt->contents->next, i + 2);
        }

        if (dpnt->subdir)
            update_dir_nlink(dpnt->subdir);
        dpnt = dpnt->next;
    }
    return (i+2);
}

Referenced by do_dir_nlink().

update_inode()

LOCAL void update_inode	(	struct directory_entry *	s_entry,
		int	value
	)

Definition at line 329 of file inode.c.

{
    unsigned char   *pnt;
    int     len;

    if (!rrip112)
        return;

    pnt = s_entry->rr_attributes;
    len = s_entry->total_rr_attr_size;
    pnt = parse_xa(pnt, &len, 0);
    while (len >= 4) {
        if (pnt[3] != 1 && pnt[3] != 2) {
            errmsgno(EX_BAD,
                _("**BAD RRVERSION (%d) in '%c%c' field (%2.2X %2.2X).\n"),
                pnt[3], pnt[0], pnt[1], pnt[0], pnt[1]);
        }
        if (pnt[2] < 4) {
            errmsgno(EX_BAD,
                _("**BAD RRLEN (%d) in '%2.2s' field %2.2X %2.2X.\n"),
                pnt[2], pnt, pnt[0], pnt[1]);
            break;
        }
        if (pnt[0] == 'P' && pnt[1] == 'X') {
            if ((pnt[2] & 0xFF) < 44)   /* Paranoia */
                return;
            set_733((char *)pnt + 36, value);
            break;
        }
        len -= pnt[2];
        pnt += pnt[2];
    }
}

Referenced by assign_inodes().

update_nlink()

LOCAL void update_nlink	(	struct directory_entry *	s_entry,
		int	value
	)

Definition at line 369 of file inode.c.

{
    unsigned char   *pnt;
    int     len;

    pnt = s_entry->rr_attributes;
    len = s_entry->total_rr_attr_size;
    pnt = parse_xa(pnt, &len, 0);
    while (len >= 4) {
        if (pnt[3] != 1 && pnt[3] != 2) {
            errmsgno(EX_BAD,
                _("**BAD RRVERSION (%d) in '%c%c' field (%2.2X %2.2X).\n"),
                pnt[3], pnt[0], pnt[1], pnt[0], pnt[1]);
        }
        if (pnt[2] < 4) {
            errmsgno(EX_BAD,
                _("**BAD RRLEN (%d) in '%2.2s' field %2.2X %2.2X.\n"),
                pnt[2], pnt, pnt[0], pnt[1]);
            break;
        }
        if (pnt[0] == 'P' && pnt[1] == 'X') {
            set_733((char *)pnt + 12, value);
            break;
        }
        len -= pnt[2];
        pnt += pnt[2];
    }
}

Referenced by assign_linkcount(), do_dir_nlink(), and update_dir_nlink().

Variable Documentation

null_ino_high

LOCAL UInt32_t null_ino_high

Definition at line 40 of file inode.c.

Referenced by do_inode().

sccsid

UConst char sccsid[]

static

Initial value:

=
    "@(#)inode.c    1.19 16/11/14 Copyright 2006-2015 J. Schilling"

Definition at line 4 of file inode.c.