66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM android_fs
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#if !defined(_TRACE_ANDROID_FS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_ANDROID_FS_H
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#include <linux/tracepoint.h>
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#include <trace/events/android_fs_template.h>
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DEFINE_EVENT(android_fs_data_start_template, android_fs_dataread_start,
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TP_PROTO(struct inode *inode, loff_t offset, int bytes,
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pid_t pid, char *pathname, char *command),
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TP_ARGS(inode, offset, bytes, pid, pathname, command));
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DEFINE_EVENT(android_fs_data_end_template, android_fs_dataread_end,
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TP_PROTO(struct inode *inode, loff_t offset, int bytes),
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TP_ARGS(inode, offset, bytes));
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DEFINE_EVENT(android_fs_data_start_template, android_fs_datawrite_start,
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TP_PROTO(struct inode *inode, loff_t offset, int bytes,
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pid_t pid, char *pathname, char *command),
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TP_ARGS(inode, offset, bytes, pid, pathname, command));
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DEFINE_EVENT(android_fs_data_end_template, android_fs_datawrite_end,
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TP_PROTO(struct inode *inode, loff_t offset, int bytes),
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TP_ARGS(inode, offset, bytes));
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#endif /* _TRACE_ANDROID_FS_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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#ifndef ANDROID_FSTRACE_GET_PATHNAME
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#define ANDROID_FSTRACE_GET_PATHNAME
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/* Sizes an on-stack array, so careful if sizing this up ! */
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#define MAX_TRACE_PATHBUF_LEN 256
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static inline char *
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android_fstrace_get_pathname(char *buf, int buflen, struct inode *inode)
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{
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char *path;
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struct dentry *d;
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/*
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* d_obtain_alias() will either iput() if it locates an existing
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* dentry or transfer the reference to the new dentry created.
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* So get an extra reference here.
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*/
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ihold(inode);
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d = d_obtain_alias(inode);
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if (likely(!IS_ERR(d))) {
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path = dentry_path_raw(d, buf, buflen);
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if (unlikely(IS_ERR(path))) {
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strcpy(buf, "ERROR");
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path = buf;
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}
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dput(d);
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} else {
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strcpy(buf, "ERROR");
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path = buf;
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}
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return path;
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}
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#endif
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