cd_ptrec(3) — Subroutines

NAME

cd_ptrec, cd_cptrec − reads the Path Table Record from the CD-ROM Path Table

SYNOPSIS

#include <sys/cdrom.h>
int cd_ptrec(
        char ∗path,
        struct iso9660_ptrec ∗ptrec ); int cd_cptrec(
        char ∗path,
        char ∗addr );

LIBRARY

Rock Ridge and X/Open Extensions to the CDFS library (libcdrom.so, libcdrom.a)

PARAMETERS

∗path
Points to a file or directory within the CD-ROM File System hierarchy.

∗ptrec
Points to the iso9660_ptrec structure that holds the contents of the Path Table Record associated with the file or directory pointed to by ∗path. The iso9660_ptrec structure is defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h

∗addr
Specifies the address to which the function cd_cptrec() copies the complete Path Table Record that is recorded on the CD-ROM.

DESCRIPTION

The cd_ptrec() routine fills the ∗ptrec structure with the contents of the Path Table Record associated with the directory that is pointed to by ∗path.

The cd_cptrec() function copies the complete Path Table Record that is recorded on the CD-ROM to the address pointed to by ∗addr. The user must allocate {CD_MAXPTRECL} bytes for the Path Table Record. The variable {CD_MAXPTRECL} is defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h.

RETURN VALUES

If successful, the value zero is returned. If unsuccessful, the integer -1 is returned and errno is set to indicate the error.

ERRORS

[EACCES]
Search permission is denied for a directory in ∗path or read permission is denied for the named directory.

[EFAULT]
The address of ∗path or ∗addr is invalid.

[EINTR]
A signal was caught during execution of the function.

[EINVAL]
The argument ∗path points to a file or directory that is not within the CD-ROM file hierarchy.

[EMFILE]
{OPEN_MAX} file descriptors are currently open in the calling process.

[Tru64 UNIX] Either the OPEN_MAX value or the per-process soft descriptor limit is checked.

[ENAMETOOLONG]
The length of the ∗path string exceeds {PATH_MAX}, or a pathname component is longer than {NAME_MAX} while {_POSIX_NO_TRUNC} is in effect.

[ENFILE]
The system file table is full.

[ENOENT]
A component of ∗path does not exist, or the ∗path argument points to an empty string.

[ENOTDIR]
A component of the ∗path prefix is not a directory.

[ENXIO]
The CD-ROM is not in the drive or a read error occurred.

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