xref: /386bsd/usr/share/man/cat3/getfstype.0 (revision a2142627) 
1GETFSENT(3)               386BSD Programmer's Manual               GETFSENT(3)
2
3NNAAMMEE
4     ggeettffsseenntt, ggeettffssssppeecc, ggeettffssffiillee, sseettffsseenntt, eennddffsseenntt - get file system
5     descriptor file entry
6
7SSYYNNOOPPSSIISS
8     ##iinncclluuddee <<ffssttaabb..hh>>
9
10     _f_s_t_a_b *
11     ggeettffsseenntt(_v_o_i_d)
12
13     _s_t_r_u_c_t _f_s_t_a_b *
14     ggeettffssssppeecc(_c_o_n_s_t _c_h_a_r *_s_p_e_c)
15
16     _s_t_r_u_c_t _f_s_t_a_b *
17     ggeettffssffiillee(_c_o_n_s_t _c_h_a_r *_f_i_l_e)
18
19     _i_n_t
20     sseettffsseenntt(_v_o_i_d)
21
22     _v_o_i_d
23     eennddffsseenntt(_v_o_i_d)
24
25DDEESSCCRRIIPPTTIIOONN
26     The ggeettffsseenntt(), ggeettffssssppeecc(), and ggeettffssffiillee() functions each return a
27     pointer to an object with the following structure containing the broken-
28     out fields of a line in the file system description file, <_f_s_t_a_b._h>.
29
30           struct fstab {
31                   char    *fs_spec;       /* block special device name */
32                   char    *fs_file;       /* file system path prefix */
33                   char    *fs_vfstype;    /* type of file system */
34                   char    *fs_mntops;     /* comma separated mount options */
35                   char    *fs_type;       /* rw, ro, sw, or xx */
36                   int     fs_freq;        /* dump frequency, in days */
37                   int     fs_passno;      /* pass number on parallel dump */
38           };
39
40     The fields have meanings described in fstab(5).
41
42     The sseettffsseenntt() function opens the file (closing any previously opened
43     file) or rewinds it if it is already open.
44
45     The eennddffsseenntt() function closes the file.
46
47     The ggeettffssssppeecc() and ggeettffssffiillee() functions search the entire file (opening
48     it if necessary) for a matching special file name or file system file
49     name.
50
51     For programs wishing to read the entire database, ggeettffsseenntt() reads the
52     next entry (opening the file if necessary).
53
54     All entries in the file with a type field equivalent to FSTAB_XX are
55     ignored.
56
57RREETTUURRNN VVAALLUUEESS
58     The ggeettffsseenntt(), ggeettffssssppeecc(), and ggeettffssffiillee() functions return a null
59     pointer (0) on EOF or error.  The sseettffsseenntt() function returns 0 on
60     failure, 1 on success.  The eennddffsseenntt() function returns nothing.
61
62FFIILLEESS
63     /etc/fstab
64
65SSEEEE AALLSSOO
66     fstab(5)
67
68HHIISSTTOORRYY
69     The ggeettffsseenntt() function appeared in 4.0BSD; the eennddffsseenntt(), ggeettffssffiillee(),
70     ggeettffssssppeecc(), and sseettffsseenntt() functions appeared in 4.3BSD.
71
72BBUUGGSS
73     These functions use static data storage; if the data is needed for future
74     use, it should be copied before any subsequent calls overwrite it.
75
764th Berkeley Distribution       April 19, 1991                               2
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