getrpcent_r(3)

1getrpcent_r(3)             Library Functions Manual             getrpcent_r(3)
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NAME

6       getrpcent_r,  getrpcbyname_r,  getrpcbynumber_r  - get RPC entry (reen‐
7       trant)
8

LIBRARY

10       Standard C library (libc, -lc)
11

SYNOPSIS

13       #include <netdb.h>
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15       int getrpcent_r(struct rpcent *result_buf, char buf[.buflen],
16                       size_t buflen, struct rpcent **result);
17       int getrpcbyname_r(const char *name,
18                       struct rpcent *result_buf, char buf[.buflen],
19                       size_t buflen, struct rpcent **result);
20       int getrpcbynumber_r(int number,
21                       struct rpcent *result_buf, char buf[.buflen],
22                       size_t buflen, struct rpcent **result);
23
24   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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26       getrpcent_r(), getrpcbyname_r(), getrpcbynumber_r():
27           Since glibc 2.19:
28               _DEFAULT_SOURCE
29           glibc 2.19 and earlier:
30               _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

33       The getrpcent_r(), getrpcbyname_r(), and  getrpcbynumber_r()  functions
34       are the reentrant equivalents of, respectively, getrpcent(3), getrpcby‐
35       name(3), and getrpcbynumber(3).  They differ in the way that the rpcent
36       structure is returned, and in the function calling signature and return
37       value.  This manual page describes just the differences from  the  non‐
38       reentrant functions.
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40       Instead  of returning a pointer to a statically allocated rpcent struc‐
41       ture as the function result, these functions copy  the  structure  into
42       the location pointed to by result_buf.
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44       The  buf array is used to store the string fields pointed to by the re‐
45       turned rpcent structure.  (The nonreentrant  functions  allocate  these
46       strings in static storage.)  The size of this array is specified in bu‐
47       flen.  If buf is too small, the call fails with the error  ERANGE,  and
48       the  caller  must  try again with a larger buffer.  (A buffer of length
49       1024 bytes should be sufficient for most applications.)
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51       If the function call successfully obtains an RPC record,  then  *result
52       is set pointing to result_buf; otherwise, *result is set to NULL.
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RETURN VALUE

55       On success, these functions return 0.  On error, they return one of the
56       positive error numbers listed in ERRORS.
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58       On error, record not found (getrpcbyname_r(),  getrpcbynumber_r()),  or
59       end of input (getrpcent_r()) result is set to NULL.
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ERRORS

62       ENOENT (getrpcent_r()) No more records in database.
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64       ERANGE buf is too small.  Try again with a larger buffer (and increased
65              buflen).
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ATTRIBUTES

68       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
69       tributes(7).
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71       ┌─────────────────────────────────────┬───────────────┬────────────────┐
72       │Interface                            │ Attribute     │ Value          │
73       ├─────────────────────────────────────┼───────────────┼────────────────┤
74       │getrpcent_r(), getrpcbyname_r(),     │ Thread safety │ MT-Safe locale │
75       │getrpcbynumber_r()                   │               │                │
76       └─────────────────────────────────────┴───────────────┴────────────────┘
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VERSIONS

79       Functions with similar names exist on some other systems, though  typi‐
80       cally with different calling signatures.
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STANDARDS

83       GNU.
84