1t_errno(3NSL) Networking Services Library Functions t_errno(3NSL)
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6 t_errno - XTI error return value
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9 #include <xti.h>
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13 This error return value is part of the XTI interfaces that evolved from
14 the TLI interfaces. XTI represents the future evolution of these inter‐
15 faces. However, TLI interfaces are supported for compatibility. When
16 using a TLI interface that has the same name as an XTI interfaces, a
17 different headerfile, <tiuser.h>, must be used. Refer the the TLI COM‐
18 PATIBILITY section for a description of differences between the two
19 interfaces.
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22 t_errno is used by XTI functions to return error values.
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25 XTI functions provide an error number in t_errno which has type int
26 and is defined in <xti.h>. The value of t_errno will be defined only
27 after a call to a XTI function for which it is explicitly stated to be
28 set and until it is changed by the next XTI function call. The value of
29 t_errno should only be examined when it is indicated to be valid by a
30 function's return value. Programs should obtain the definition of
31 t_errno by the inclusion of <xti.h>. The practice of defining t_errno
32 in program as extern int t_errno is obsolescent. No XTI function sets
33 t_errno to 0 to indicate an error.
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36 It is unspecified whether t_errno is a macro or an identifier with
37 external linkage. It represents a modifiable lvalue of type int. If a
38 macro definition is suppressed in order to access an actual object or a
39 program defines an identifier with name t_errno, the behavior is unde‐
40 fined.
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43 The symbolic values stored in t_errno by an XTI function are defined
44 in the ERRORS sections in all relevant XTI function definition pages.
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47 t_errno is also used by TLI functions to return error values.
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50 The XTI and TLI interface definitions have common names but use differ‐
51 ent header files. This, and other semantic differences between the two
52 interfaces are described in the subsections below.
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54 Interface Header
55 The XTI interfaces use the header file, <xti.h>. TLI interfaces should
56 not use this header. They should use the header:
57 #include <tiuser.h>
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59 Error Description Values
60 The t_errno values that can be set by the XTI interface but cannot be
61 set by the TLI interface are:
62 TNOSTRUCTYPE
63 TBADNAME
64 TBADQLEN
65 TADDRBUSY
66 TINDOUT
67 TPROVMISMATCH
68 TRESADDR
69 TQFULL
70 TPROTO
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73 See attributes(5) for descriptions of the following attributes:
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78 ┌─────────────────────────────┬─────────────────────────────┐
79 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
80 ├─────────────────────────────┼─────────────────────────────┤
81 │MT-Level │MT-Safe │
82 └─────────────────────────────┴─────────────────────────────┘
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85 attributes(5)
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89SunOS 5.11 7 May 1998 t_errno(3NSL)