| 1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This software has been released under the terms of the IBM Public |
| 6 | * License. For details, see the LICENSE file in the top-level source |
| 7 | * directory or online at http://www.openafs.org/dl/license10.html |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Implementation of miscellaneous Irix routines. |
| 12 | */ |
| 13 | #include <afsconfig.h> |
| 14 | #include "afs/param.h" |
| 15 | |
| 16 | |
| 17 | #ifdef AFS_SGI62_ENV |
| 18 | #include "afs/sysincludes.h" /* Standard vendor system headers */ |
| 19 | #include "afsincludes.h" /* Afs-based standard headers */ |
| 20 | #include "afs/afs_stats.h" /* statistics */ |
| 21 | |
| 22 | |
| 23 | |
| 24 | |
| 25 | /* |
| 26 | * various special purpose routines |
| 27 | */ |
| 28 | void |
| 29 | afs_mpservice(void *a) |
| 30 | { |
| 31 | } |
| 32 | |
| 33 | /*! |
| 34 | * make a semaphore name for use in <sys/sema.h>-type routines on |
| 35 | * IRIX |
| 36 | * |
| 37 | * \param[out] sname will contain the semaphore name and |
| 38 | * should point to an allocated string |
| 39 | * buffer of size METER_NAMSZ |
| 40 | * \param[in] prefix string with which to start the name |
| 41 | * \param[in] v_number vnode number to complete the name |
| 42 | * |
| 43 | * \post sname will point to the beginning of a NULL-terminated |
| 44 | * string to be used as a semaphore name with a maximum of |
| 45 | * (METER_NAMSZ-1) characters plus the NULL. The name is a |
| 46 | * concatenation of the string at 'prefix' and the ASCII |
| 47 | * representation of the number in 'v_number'. sname is |
| 48 | * returned. |
| 49 | * |
| 50 | * \note Due to IRIX's use of uint64_t to represent vnumber_t and a |
| 51 | * maximum semaphore name length of 15 (METER_NAMSZ-1), this |
| 52 | * function cannot be guaranteed to produce a name which |
| 53 | * uniquely describes a vnode. |
| 54 | * |
| 55 | */ |
| 56 | char * |
| 57 | makesname(char *sname, const char *prefix, vnumber_t v_number) |
| 58 | { |
| 59 | char vnbuf[21]; /* max number of uint64 decimal digits + 1 */ |
| 60 | size_t prlen, vnlen; |
| 61 | |
| 62 | if (sname) { |
| 63 | /* |
| 64 | * Note: IRIX doesn't have realloc() available in the |
| 65 | * kernel, so the openafs util implementation of snprintf is |
| 66 | * not usable. What follows is intended to reproduce the |
| 67 | * behavior of: |
| 68 | * snprintf(sname, METER_NAMSZ, "%s%llu", prefix, |
| 69 | * (unsigned long long)v_number); |
| 70 | * Additionally, the kernel only provides a void sprintf(), |
| 71 | * making length checking slightly more difficult. |
| 72 | */ |
| 73 | prlen = strlen(prefix); |
| 74 | if (prlen > METER_NAMSZ-1) |
| 75 | prlen = METER_NAMSZ-1; |
| 76 | strncpy(sname, prefix, prlen); |
| 77 | |
| 78 | memset(vnbuf, 0, sizeof(vnbuf)); |
| 79 | sprintf(vnbuf, "%llu", (unsigned long long)v_number); |
| 80 | vnlen = strlen(vnbuf); |
| 81 | if (vnlen+prlen > METER_NAMSZ-1) |
| 82 | vnlen = METER_NAMSZ-1-prlen; |
| 83 | if (vnlen > 0) |
| 84 | strncpy(&(sname[prlen]), vnbuf, vnlen); |
| 85 | sname[vnlen+prlen] = '\0'; |
| 86 | } |
| 87 | return sname; |
| 88 | } |
| 89 | |
| 90 | #ifdef AFS_SGI_VNODE_GLUE |
| 91 | #include <sys/invent.h> |
| 92 | extern mutex_t afs_init_kern_lock; |
| 93 | |
| 94 | /* afs_init_kernel_config |
| 95 | * |
| 96 | * initialize vnode glue layer by testing for NUMA. |
| 97 | * Argument: flag |
| 98 | * 0 = no numa, 1 = has numa, -1 = test for numa. |
| 99 | */ |
| 100 | int |
| 101 | afs_init_kernel_config(int flag) |
| 102 | { |
| 103 | static int afs_kern_inited = 0; |
| 104 | int code = 0; |
| 105 | |
| 106 | mutex_enter(&afs_init_kern_lock); |
| 107 | if (!afs_kern_inited) { |
| 108 | afs_kern_inited = 1; |
| 109 | |
| 110 | if (flag == -1) { |
| 111 | inventory_t *pinv; |
| 112 | /* test for numa arch. */ |
| 113 | /* Determine if thisis a NUMA platform. Currently, this is true |
| 114 | * only if it's an IP27 or IP35. |
| 115 | */ |
| 116 | pinv = |
| 117 | find_inventory(NULL, INV_PROCESSOR, |
| 118 | INV_CPUBOARD, -1, -1, -1); |
| 119 | if (!pinv) |
| 120 | code = ENODEV; |
| 121 | else |
| 122 | afs_is_numa_arch = ((pinv->inv_state == INV_IP27BOARD) |
| 123 | || (pinv->inv_state == INV_IP35BOARD)) |
| 124 | ? 1 : 0; |
| 125 | } else |
| 126 | afs_is_numa_arch = flag; |
| 127 | } |
| 128 | mutex_exit(&afs_init_kern_lock); |
| 129 | return code; |
| 130 | } |
| 131 | #endif /* AFS_SGI_VNODE_GLUE */ |
| 132 | |
| 133 | /* And just so we know what someone is _really_ running */ |
| 134 | #ifdef IP19 |
| 135 | int afs_ipno = 19; |
| 136 | #elif defined(IP20) |
| 137 | int afs_ipno = 20; |
| 138 | #elif defined(IP21) |
| 139 | int afs_ipno = 21; |
| 140 | #elif defined(IP25) |
| 141 | int afs_ipno = 25; |
| 142 | #elif defined(IP26) |
| 143 | int afs_ipno = 26; |
| 144 | #elif defined(IP27) |
| 145 | int afs_ipno = 27; |
| 146 | #elif defined(IP28) |
| 147 | int afs_ipno = 28; |
| 148 | #elif defined(IP30) |
| 149 | int afs_ipno = 30; |
| 150 | #elif defined(IP35) |
| 151 | int afs_ipno = 35; |
| 152 | #else |
| 153 | int afs_ipno = -1; |
| 154 | #endif |
| 155 | |
| 156 | |
| 157 | #endif /* AFS_SGI62_ENV */ |