Mention KTR_IFQ and KTR_IF_START
[dragonfly.git] / contrib / gcc-3.4 / libf2c / libI77 / sue.c
bloba20df66d31ffab7258fef845003734c15fb7173b
1 #include "config.h"
2 #include "f2c.h"
3 #include "fio.h"
4 extern uiolen f__reclen;
5 off_t f__recloc;
7 int
8 c_sue (cilist * a)
10 f__external = f__sequential = 1;
11 f__formatted = 0;
12 f__curunit = &f__units[a->ciunit];
13 if (a->ciunit >= MXUNIT || a->ciunit < 0)
14 err (a->cierr, 101, "startio");
15 f__elist = a;
16 if (f__curunit->ufd == NULL && fk_open (SEQ, UNF, a->ciunit))
17 err (a->cierr, 114, "sue");
18 f__cf = f__curunit->ufd;
19 if (f__curunit->ufmt)
20 err (a->cierr, 103, "sue");
21 if (!f__curunit->useek)
22 err (a->cierr, 103, "sue");
23 return (0);
26 integer
27 s_rsue (cilist * a)
29 int n;
30 if (f__init != 1)
31 f_init ();
32 f__init = 3;
33 f__reading = 1;
34 if ((n = c_sue (a)))
35 return (n);
36 f__recpos = 0;
37 if (f__curunit->uwrt && f__nowreading (f__curunit))
38 err (a->cierr, errno, "read start");
39 if (fread ((char *) &f__reclen, sizeof (uiolen), 1, f__cf) != 1)
41 if (feof (f__cf))
43 f__curunit->uend = 1;
44 err (a->ciend, EOF, "start");
46 clearerr (f__cf);
47 err (a->cierr, errno, "start");
49 return (0);
52 integer
53 s_wsue (cilist * a)
55 int n;
56 if (f__init != 1)
57 f_init ();
58 f__init = 3;
59 if ((n = c_sue (a)))
60 return (n);
61 f__reading = 0;
62 f__reclen = 0;
63 if (f__curunit->uwrt != 1 && f__nowwriting (f__curunit))
64 err (a->cierr, errno, "write start");
65 f__recloc = FTELL (f__cf);
66 FSEEK (f__cf, (off_t) sizeof (uiolen), SEEK_CUR);
67 return (0);
70 integer
71 e_wsue (void)
73 off_t loc;
74 f__init = 1;
75 fwrite ((char *) &f__reclen, sizeof (uiolen), 1, f__cf);
76 #ifdef ALWAYS_FLUSH
77 if (fflush (f__cf))
78 err (f__elist->cierr, errno, "write end");
79 #endif
80 loc = FTELL (f__cf);
81 FSEEK (f__cf, f__recloc, SEEK_SET);
82 fwrite ((char *) &f__reclen, sizeof (uiolen), 1, f__cf);
83 FSEEK (f__cf, loc, SEEK_SET);
84 return (0);
87 integer
88 e_rsue (void)
90 f__init = 1;
91 FSEEK (f__cf, (off_t) (f__reclen - f__recpos + sizeof (uiolen)), SEEK_CUR);
92 return (0);