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fix: hash add file size limit #48

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merged 8 commits into from
Jul 18, 2022
Merged

fix: hash add file size limit #48

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d034f55
feat: add qtype & atype field for dns parse
Jul 6, 2022
9d67e40
Merge branch 'chriskaliX:main' into main
rockingl Jul 7, 2022
5f952af
fix: add save_argv_to_buf & add save_envp_to_buf function
Jul 7, 2022
1b64f5d
Merge branch 'chriskaliX:main' into main
rockingl Jul 11, 2022
8411e31
Merge branch 'chriskaliX:main' into main
rockingl Jul 12, 2022
fcde175
Merge branch 'chriskaliX:main' into main
rockingl Jul 13, 2022
0b468ce
Merge branch 'chriskaliX:main' into main
rockingl Jul 18, 2022
3969565
fix: exe hash add file size limit
Jul 18, 2022
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12 changes: 11 additions & 1 deletion plugin/driver/eBPF/user/cache/hash.go
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Original file line number Diff line number Diff line change
Expand Up @@ -50,12 +50,17 @@ func (h *HashCache) Get(path string) string {
return fileHash.hash
}
fileHash.updateTime()
// if it's not in cache, check the stat
// if it's less time, check the stat
stat, err = getStat(path)
if err != nil {
fileHash.hash = share.INVALID_STRING
return fileHash.hash
}
// file size limit
if stat.Size > maxFileSize {
fileHash.hash = share.INVALID_STRING
return fileHash.hash
}
// if stat is invalid, get the hash and update all
if fileHash.statInvalid(stat.Ino, stat.Mtim.Sec, stat.Size) {
fileHash.hash = genHash(path)
Expand All @@ -74,6 +79,11 @@ func (h *HashCache) Get(path string) string {
fileHash.hash = share.INVALID_STRING
return fileHash.hash
}
// file size limit
if stat.Size > maxFileSize {
fileHash.hash = share.INVALID_STRING
return fileHash.hash
}
fileHash.hash = genHash(path)
fileHash.updateStat(stat)
return fileHash.hash
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