1 | /* |
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2 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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3 | * unrestricted use provided that this legend is included on all tape |
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4 | * media and as a part of the software program in whole or part. Users |
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5 | * may copy or modify Sun RPC without charge, but are not authorized |
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6 | * to license or distribute it to anyone else except as part of a product or |
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7 | * program developed by the user. |
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8 | * |
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9 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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10 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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11 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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12 | * |
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13 | * Sun RPC is provided with no support and without any obligation on the |
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14 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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15 | * modification or enhancement. |
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16 | * |
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17 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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18 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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19 | * OR ANY PART THEREOF. |
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20 | * |
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21 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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22 | * or profits or other special, indirect and consequential damages, even if |
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23 | * Sun has been advised of the possibility of such damages. |
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24 | * |
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25 | * Sun Microsystems, Inc. |
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26 | * 2550 Garcia Avenue |
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27 | * Mountain View, California 94043 |
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28 | */ |
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29 | |
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30 | /* |
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31 | * Kernel/lock manager protocol definition |
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32 | * Copyright (C) 1986 Sun Microsystems, Inc. |
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33 | * |
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34 | * protocol used between the UNIX kernel (the "client") and the |
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35 | * local lock manager. The local lock manager is a deamon running |
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36 | * above the kernel. |
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37 | */ |
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38 | |
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39 | #ifndef RPC_HDR |
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40 | %#ifndef lint |
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41 | %/*static char sccsid[] = "from: @(#)klm_prot.x 1.7 87/07/08 Copyr 1987 Sun Micro";*/ |
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42 | %/*static char sccsid[] = "from: @(#)klm_prot.x 2.1 88/08/01 4.0 RPCSRC";*/ |
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43 | %static const char rcsid[] = |
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44 | % "$FreeBSD: src/include/rpcsvc/klm_prot.x,v 1.6 1999/08/27 23:45:08 peter Exp $"; |
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45 | %#endif /* not lint */ |
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46 | #endif |
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47 | |
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48 | const LM_MAXSTRLEN = 1024; |
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49 | |
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50 | /* |
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51 | * lock manager status returns |
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52 | */ |
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53 | enum klm_stats { |
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54 | klm_granted = 0, /* lock is granted */ |
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55 | klm_denied = 1, /* lock is denied */ |
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56 | klm_denied_nolocks = 2, /* no lock entry available */ |
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57 | klm_working = 3 /* lock is being processed */ |
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58 | }; |
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59 | |
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60 | /* |
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61 | * lock manager lock identifier |
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62 | */ |
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63 | struct klm_lock { |
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64 | string server_name<LM_MAXSTRLEN>; |
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65 | netobj fh; /* a counted file handle */ |
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66 | int pid; /* holder of the lock */ |
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67 | unsigned l_offset; /* beginning offset of the lock */ |
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68 | unsigned l_len; /* byte length of the lock; |
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69 | * zero means through end of file */ |
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70 | }; |
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71 | |
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72 | /* |
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73 | * lock holder identifier |
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74 | */ |
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75 | struct klm_holder { |
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76 | bool exclusive; /* FALSE if shared lock */ |
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77 | int svid; /* holder of the lock (pid) */ |
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78 | unsigned l_offset; /* beginning offset of the lock */ |
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79 | unsigned l_len; /* byte length of the lock; |
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80 | * zero means through end of file */ |
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81 | }; |
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82 | |
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83 | /* |
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84 | * reply to KLM_LOCK / KLM_UNLOCK / KLM_CANCEL |
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85 | */ |
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86 | struct klm_stat { |
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87 | klm_stats stat; |
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88 | }; |
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89 | |
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90 | /* |
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91 | * reply to a KLM_TEST call |
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92 | */ |
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93 | union klm_testrply switch (klm_stats stat) { |
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94 | case klm_denied: |
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95 | struct klm_holder holder; |
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96 | default: /* All other cases return no arguments */ |
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97 | void; |
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98 | }; |
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99 | |
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100 | |
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101 | /* |
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102 | * arguments to KLM_LOCK |
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103 | */ |
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104 | struct klm_lockargs { |
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105 | bool block; |
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106 | bool exclusive; |
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107 | struct klm_lock alock; |
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108 | }; |
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109 | |
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110 | /* |
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111 | * arguments to KLM_TEST |
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112 | */ |
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113 | struct klm_testargs { |
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114 | bool exclusive; |
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115 | struct klm_lock alock; |
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116 | }; |
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117 | |
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118 | /* |
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119 | * arguments to KLM_UNLOCK |
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120 | */ |
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121 | struct klm_unlockargs { |
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122 | struct klm_lock alock; |
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123 | }; |
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124 | |
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125 | program KLM_PROG { |
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126 | version KLM_VERS { |
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127 | |
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128 | klm_testrply KLM_TEST (struct klm_testargs) = 1; |
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129 | |
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130 | klm_stat KLM_LOCK (struct klm_lockargs) = 2; |
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131 | |
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132 | klm_stat KLM_CANCEL (struct klm_lockargs) = 3; |
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133 | /* klm_granted=> the cancel request fails due to lock is already granted */ |
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134 | /* klm_denied=> the cancel request successfully aborts |
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135 | lock request */ |
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136 | |
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137 | klm_stat KLM_UNLOCK (struct klm_unlockargs) = 4; |
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138 | } = 1; |
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139 | } = 100020; |
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