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GETFSENT(3) BSD Library Functions Manual GETFSENT(3) NAME getfsent, getfsspec, getfsfile, setfsent, endfsent -- get file system descriptor file entry LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <fstab.h> struct fstab * getfsent(void); struct fstab * getfsspec(const char *spec); struct fstab * getfsfile(const char *file); int setfsent(void); void endfsent(void); DESCRIPTION The getfsent(), getfsspec(), and getfsfile() functions each return a pointer to an object with the following structure containing the broken-out brokenout out fields of a line in the file system description file, <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 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. FILES /etc/fstab SEE ALSO fstab(5) HISTORY The getfsent() function appeared in 4.0BSD; the endfsent(), getfsfile(), getfsspec(), and setfsent() functions appeared in 4.3BSD. 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. BSD June 4, 1993 BSD |