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1 .\" $NetBSD: gelf_getsyminfo.3,v 1.2 2014/03/09 16:58:04 christos Exp $
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3 .\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
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26 .\" Id: gelf_getsyminfo.3 189 2008-07-20 10:38:08Z jkoshy
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28 .Dd August 29, 2006
29 .Os
30 .Dt GELF_GETSYMINFO 3
31 .Sh NAME
32 .Nm gelf_getsyminfo ,
33 .Nm gelf_update_syminfo
34 .Nd read and update symbol information
35 .Sh LIBRARY
36 .Lb libelf
37 .Sh SYNOPSIS
38 .In gelf.h
39 .Ft "GElf_Syminfo *"
40 .Fn gelf_getsyminfo "Elf_Data *data" "int ndx" "GElf_Syminfo *syminfo"
41 .Ft int
42 .Fn gelf_update_syminfo "Elf_Data *data" "int ndx" "GElf_Syminfo *syminfo"
43 .Sh DESCRIPTION
44 These convenience functions are used to retrieve and update class-dependent
45 .Vt Elf32_Syminfo
46 and
47 .Vt Elf64_Syminfo
48 records in an ELF object.
49 .Pp
50 Argument
51 .Ar data
52 is an
53 .Vt Elf_Data
54 descriptor associated with a section of type
55 .Dv SHT_SUNW_syminfo .
56 Argument
57 .Ar ndx
58 is the index of the record being retrieved or updated.
59 The class-independent
60 .Vt GElf_Syminfo
61 structure is described in
62 .Xr gelf 3 .
63 .Pp
64 Function
65 .Fn gelf_getsyminfo
66 retrieves class-dependent record at index
67 .Ar ndx
68 in data buffer
69 .Ar data
70 and copies it to the destination pointed to by argument
71 .Ar syminfo
72 after translation to class-independent form.
73 .Pp
74 Function
75 .Fn gelf_update_syminfo
76 converts the class-independent record pointed to
77 by argument
78 .Ar syminfo
79 to class-dependent form, and writes it to the record at index
80 .Ar ndx
81 in the data buffer described by argument
82 .Ar data .
83 .Sh RETURN VALUES
84 Function
85 .Fn gelf_getsyminfo
86 returns the value of argument
87 .Ar syminfo
88 if successful, or NULL in case of an error.
89 Function
90 .Fn gelf_update_syminfo
91 returns a non-zero value if successful, or zero in case of an error.
92 .Sh ERRORS
93 These functions may fail with the following errors:
94 .Bl -tag -width "[ELF_E_RESOURCE]"
95 .It Bq Er ELF_E_ARGUMENT
96 Arguments
97 .Ar data
98 or
99 .Ar syminfo
100 were NULL.
101 .It Bq Er ELF_E_ARGUMENT
102 Argument
103 .Ar ndx
104 was less than zero or larger than the number of symbols in the data
105 descriptor.
106 .It Bq Er ELF_E_ARGUMENT
107 Data descriptor
108 .Ar data
109 was not associated with a section containing symbol information.
110 .El
111 .Sh SEE ALSO
112 .Xr elf 3 ,
113 .Xr elf_getdata 3 ,
114 .Xr elf_getscn 3 ,
115 .Xr gelf 3 ,
116 .Xr gelf_getsym 3 ,
117 .Xr gelf_update_sym 3