90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
#include "fault-inject.h"
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#include <linux/version.h>
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#if defined(BEEGFS_DEBUG) && defined(CONFIG_FAULT_INJECTION)
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static struct dentry* debug_dir;
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static struct dentry* fault_dir;
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#define BEEGFS_DECLARE_FAULT_ATTR(name) DECLARE_FAULT_ATTR(beegfs_fault_ ## name)
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BEEGFS_DECLARE_FAULT_ATTR(readpage);
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BEEGFS_DECLARE_FAULT_ATTR(writepage);
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BEEGFS_DECLARE_FAULT_ATTR(write_force_cache_bypass);
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BEEGFS_DECLARE_FAULT_ATTR(read_force_cache_bypass);
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BEEGFS_DECLARE_FAULT_ATTR(commkit_sendheader_timeout);
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BEEGFS_DECLARE_FAULT_ATTR(commkit_polltimeout);
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BEEGFS_DECLARE_FAULT_ATTR(commkit_recvheader_timeout);
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BEEGFS_DECLARE_FAULT_ATTR(commkit_readfile_receive_timeout);
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BEEGFS_DECLARE_FAULT_ATTR(commkit_writefile_senddata_timeout);
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#define INIT_FAULT(name) \
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if(IS_ERR(fault_create_debugfs_attr(#name, fault_dir, &beegfs_fault_ ## name))) \
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goto err_fault_dir;
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#ifndef KERNEL_HAS_FAULTATTR_DNAME
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#define DESTROY_FAULT(name) do { } while (0)
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#else
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#define DESTROY_FAULT(name) \
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do { \
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if((beegfs_fault_ ## name).dname) \
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dput( (beegfs_fault_ ## name).dname); \
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} while (0)
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#endif
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bool beegfs_fault_inject_init()
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{
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debug_dir = debugfs_create_dir(BEEGFS_MODULE_NAME_STR, NULL);
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if(!debug_dir)
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goto err_debug_dir;
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fault_dir = debugfs_create_dir("fault", debug_dir);
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if(!fault_dir)
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goto err_fault_dir;
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INIT_FAULT(readpage);
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INIT_FAULT(writepage);
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INIT_FAULT(write_force_cache_bypass);
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INIT_FAULT(read_force_cache_bypass);
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INIT_FAULT(commkit_sendheader_timeout);
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INIT_FAULT(commkit_polltimeout);
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INIT_FAULT(commkit_recvheader_timeout);
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INIT_FAULT(commkit_readfile_receive_timeout);
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INIT_FAULT(commkit_writefile_senddata_timeout);
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return true;
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err_fault_dir:
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debugfs_remove_recursive(debug_dir);
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debug_dir = NULL;
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err_debug_dir:
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return false;
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}
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void beegfs_fault_inject_release()
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{
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DESTROY_FAULT(readpage);
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DESTROY_FAULT(writepage);
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DESTROY_FAULT(write_force_cache_bypass);
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DESTROY_FAULT(read_force_cache_bypass);
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DESTROY_FAULT(commkit_sendheader_timeout);
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DESTROY_FAULT(commkit_polltimeout);
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DESTROY_FAULT(commkit_recvheader_timeout);
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DESTROY_FAULT(commkit_readfile_receive_timeout);
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DESTROY_FAULT(commkit_writefile_senddata_timeout);
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debugfs_remove_recursive(debug_dir);
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}
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#endif
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