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- GETPROTOENT C Library Procedures GETPROTOENT
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- NNAAMMEE
- getprotoent, getprotobynumber, getprotobyname, setprotoent,
- endprotoent - get protocol entry
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- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<nneettddbb..hh>>
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- ssttrruucctt pprroottooeenntt **ggeettpprroottooeenntt(())
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- ssttrruucctt pprroottooeenntt **ggeettpprroottoobbyynnaammee((nnaammee))
- cchhaarr **nnaammee;;
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- ssttrruucctt pprroottooeenntt **ggeettpprroottoobbyynnuummbbeerr((pprroottoo))
- iinntt pprroottoo;;
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- sseettpprroottooeenntt((ssttaayyooppeenn))
- iinntt ssttaayyooppeenn
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- eennddpprroottooeenntt(())
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- DDEESSCCRRIIPPTTIIOONN
- _G_e_t_p_r_o_t_o_e_n_t, _g_e_t_p_r_o_t_o_b_y_n_a_m_e, and _g_e_t_p_r_o_t_o_b_y_n_u_m_b_e_r each
- return a pointer to an object with the following structure
- containing the broken-out fields of a line in the network
- protocol data base, /_e_t_c/_p_r_o_t_o_c_o_l_s.
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- struct protoent {
- char *p_name; /* official name of protocol */
- char **p_aliases; /* alias list */
- int p_proto; /* protocol number */
- };
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- The members of this structure are:
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- p_name The official name of the protocol.
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- p_aliases A zero terminated list of alternate names for the
- protocol.
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- p_proto The protocol number.
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- _G_e_t_p_r_o_t_o_e_n_t reads the next line of the file, opening the
- file if necessary.
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- _S_e_t_p_r_o_t_o_e_n_t opens and rewinds the file. If the _s_t_a_y_o_p_e_n
- flag is non-zero, the net data base will not be closed after
- each call to _g_e_t_p_r_o_t_o_b_y_n_a_m_e or _g_e_t_p_r_o_t_o_b_y_n_u_m_b_e_r.
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- _E_n_d_p_r_o_t_o_e_n_t closes the file.
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- _G_e_t_p_r_o_t_o_b_y_n_a_m_e and _g_e_t_p_r_o_t_o_b_y_n_u_m_b_e_r sequentially search from
- the beginning of the file until a matching protocol name or
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- Sprite v1.0 May 19, 1986 1
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- GETPROTOENT C Library Procedures GETPROTOENT
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- protocol number is found, or until EOF is encountered.
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- FFIILLEESS
- /etc/protocols
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- SSEEEE AALLSSOO
- protocols(5)
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- DDIIAAGGNNOOSSTTIICCSS
- Null pointer (0) returned on EOF or error.
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- BBUUGGSS
- All information is contained in a static area so it must be
- copied if it is to be saved. Only the Internet protocols
- are currently understood.
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- Sprite v1.0 May 19, 1986 2
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