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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | /* * (C) 2001 Clemson University and The University of Chicago * * See COPYING in top-level directory. */ #include "protocol.h" #include "orangefs-kernel.h" /* tags assigned to kernel upcall operations */ static __u64 next_tag_value; static DEFINE_SPINLOCK(next_tag_value_lock); /* the orangefs memory caches */ /* a cache for orangefs upcall/downcall operations */ static struct kmem_cache *op_cache; int op_cache_initialize(void) { op_cache = kmem_cache_create("orangefs_op_cache", sizeof(struct orangefs_kernel_op_s), 0, ORANGEFS_CACHE_CREATE_FLAGS, NULL); if (!op_cache) { gossip_err("Cannot create orangefs_op_cache\n"); return -ENOMEM; } /* initialize our atomic tag counter */ spin_lock(&next_tag_value_lock); next_tag_value = 100; spin_unlock(&next_tag_value_lock); return 0; } int op_cache_finalize(void) { kmem_cache_destroy(op_cache); return 0; } char *get_opname_string(struct orangefs_kernel_op_s *new_op) { if (new_op) { __s32 type = new_op->upcall.type; if (type == ORANGEFS_VFS_OP_FILE_IO) return "OP_FILE_IO"; else if (type == ORANGEFS_VFS_OP_LOOKUP) return "OP_LOOKUP"; else if (type == ORANGEFS_VFS_OP_CREATE) return "OP_CREATE"; else if (type == ORANGEFS_VFS_OP_GETATTR) return "OP_GETATTR"; else if (type == ORANGEFS_VFS_OP_REMOVE) return "OP_REMOVE"; else if (type == ORANGEFS_VFS_OP_MKDIR) return "OP_MKDIR"; else if (type == ORANGEFS_VFS_OP_READDIR) return "OP_READDIR"; else if (type == ORANGEFS_VFS_OP_READDIRPLUS) return "OP_READDIRPLUS"; else if (type == ORANGEFS_VFS_OP_SETATTR) return "OP_SETATTR"; else if (type == ORANGEFS_VFS_OP_SYMLINK) return "OP_SYMLINK"; else if (type == ORANGEFS_VFS_OP_RENAME) return "OP_RENAME"; else if (type == ORANGEFS_VFS_OP_STATFS) return "OP_STATFS"; else if (type == ORANGEFS_VFS_OP_TRUNCATE) return "OP_TRUNCATE"; else if (type == ORANGEFS_VFS_OP_RA_FLUSH) return "OP_RA_FLUSH"; else if (type == ORANGEFS_VFS_OP_FS_MOUNT) return "OP_FS_MOUNT"; else if (type == ORANGEFS_VFS_OP_FS_UMOUNT) return "OP_FS_UMOUNT"; else if (type == ORANGEFS_VFS_OP_GETXATTR) return "OP_GETXATTR"; else if (type == ORANGEFS_VFS_OP_SETXATTR) return "OP_SETXATTR"; else if (type == ORANGEFS_VFS_OP_LISTXATTR) return "OP_LISTXATTR"; else if (type == ORANGEFS_VFS_OP_REMOVEXATTR) return "OP_REMOVEXATTR"; else if (type == ORANGEFS_VFS_OP_PARAM) return "OP_PARAM"; else if (type == ORANGEFS_VFS_OP_PERF_COUNT) return "OP_PERF_COUNT"; else if (type == ORANGEFS_VFS_OP_CANCEL) return "OP_CANCEL"; else if (type == ORANGEFS_VFS_OP_FSYNC) return "OP_FSYNC"; else if (type == ORANGEFS_VFS_OP_FSKEY) return "OP_FSKEY"; else if (type == ORANGEFS_VFS_OP_FEATURES) return "OP_FEATURES"; } return "OP_UNKNOWN?"; } void orangefs_new_tag(struct orangefs_kernel_op_s *op) { spin_lock(&next_tag_value_lock); op->tag = next_tag_value++; if (next_tag_value == 0) next_tag_value = 100; spin_unlock(&next_tag_value_lock); } struct orangefs_kernel_op_s *op_alloc(__s32 type) { struct orangefs_kernel_op_s *new_op = NULL; new_op = kmem_cache_zalloc(op_cache, GFP_KERNEL); if (new_op) { INIT_LIST_HEAD(&new_op->list); spin_lock_init(&new_op->lock); init_completion(&new_op->waitq); new_op->upcall.type = ORANGEFS_VFS_OP_INVALID; new_op->downcall.type = ORANGEFS_VFS_OP_INVALID; new_op->downcall.status = -1; new_op->op_state = OP_VFS_STATE_UNKNOWN; /* initialize the op specific tag and upcall credentials */ orangefs_new_tag(new_op); new_op->upcall.type = type; new_op->attempts = 0; gossip_debug(GOSSIP_CACHE_DEBUG, "Alloced OP (%p: %llu %s)\n", new_op, llu(new_op->tag), get_opname_string(new_op)); new_op->upcall.uid = from_kuid(&init_user_ns, current_fsuid()); new_op->upcall.gid = from_kgid(&init_user_ns, current_fsgid()); } else { gossip_err("op_alloc: kmem_cache_zalloc failed!\n"); } return new_op; } void op_release(struct orangefs_kernel_op_s *orangefs_op) { if (orangefs_op) { gossip_debug(GOSSIP_CACHE_DEBUG, "Releasing OP (%p: %llu)\n", orangefs_op, llu(orangefs_op->tag)); kmem_cache_free(op_cache, orangefs_op); } else { gossip_err("NULL pointer in op_release\n"); } } |