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Man Pages


Manual Reference Pages  - GETFSENT (3)

NAME

getfsent, getfsspec, getfsfile, setfsent, endfsent - get file system descriptor file entry

CONTENTS

Library
Synopsis
Description
Return Values
Environment
Files
See Also
History
Bugs

LIBRARY


.Lb libc

SYNOPSIS


.In fstab.h struct fstab * getfsent void struct fstab * getfsspec const char *spec struct fstab * getfsfile const char *file int setfsent void void endfsent void void setfstab const char *file const char * getfstab void

DESCRIPTION

The getfsent, getfsspec, and getfsfile functions each return a pointer to an object with the following structure containing the broken-out fields of a line in the file system description file,
.In fstab.h .
struct fstab {
        char    *fs_spec;       /* block special device name */
        char    *fs_file;       /* file system path prefix */
        char    *fs_vfstype;    /* File system type, ufs, nfs */
        char    *fs_mntops;     /* Mount options ala -o */
        char    *fs_type;       /* FSTAB_* from fs_mntops */
        int     fs_freq;        /* dump frequency, in days */
        int     fs_passno;      /* pass number on parallel fsck */
};

The fields have meanings described in fstab(5).

The setfsent function opens the file (closing any previously opened file) or rewinds it if it is already open.

The endfsent function closes the file.

The setfstab function sets the file to be used by subsequent operations. The value set by setfstab does not persist across calls to endfsent.

The getfstab function returns the name of the file that will be used.

The getfsspec and getfsfile functions search the entire file (opening it if necessary) for a matching special file name or file system file name.

For programs wishing to read the entire database, getfsent reads the next entry (opening the file if necessary).

All entries in the file with a type field equivalent to FSTAB_XX are ignored.

RETURN VALUES

The getfsent, getfsspec, and getfsfile functions return a NULL pointer on EOF or error. The setfsent function returns 0 on failure, 1 on success. The endfsent function returns nothing.

ENVIRONMENT

PATH_FSTAB
  If the environment variable PATH_FSTAB is set, all operations are performed against the specified file. PATH_FSTAB will not be honored if the process environment or memory address space is considered "tainted". (See issetugid(2) for more information.)

FILES

/etc/fstab
 

SEE ALSO

fstab(5)

HISTORY

The getfsent function appeared in BSD 4.0 ; the endfsent, getfsfile, getfsspec, and setfsent functions appeared in BSD 4.3 ; the setfstab and getfstab functions appeared in
.Fx 5.1 .

BUGS

These functions use static data storage; if the data is needed for future use, it should be copied before any subsequent calls overwrite it.
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April 7, 2003 GETFSENT (3)

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