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NetBpfLoad: less copies

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This is a cherry-pick of ag/34620709 to NetBpfLoad

Test: TH
Flag: EXEMPT no-op
Bug: 428792764
Change-Id: Ia5aaa30cab71a2051b6c787824798958f2dee3f5
This commit is contained in:
Motomu Utsumi 2025-07-17 10:45:19 +09:00
commit 1ae10a006e
1 changed files with 4 additions and 10 deletions
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14
bpf/loader/NetBpfLoad.cpp
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@ -349,15 +349,12 @@ static int readSectionByName(const char* name, ifstream& elfFile, vector<char>&
if (!secname) continue;
if (!strcmp(secname, name)) {
vector<char> dataTmp;
dataTmp.resize(shTable[i].sh_size);
elfFile.seekg(shTable[i].sh_offset);
if (elfFile.fail()) return -1;
if (!elfFile.read((char*)dataTmp.data(), shTable[i].sh_size)) return -1;
data.resize(shTable[i].sh_size);
if (!elfFile.read(data.data(), shTable[i].sh_size)) return -1;
data = dataTmp;
return 0;
}
}
@ -397,15 +394,12 @@ static int readSectionByType(ifstream& elfFile, int type, vector<char>& data) {
for (int i = 0; i < (int)shTable.size(); i++) {
if ((int)shTable[i].sh_type != type) continue;
vector<char> dataTmp;
dataTmp.resize(shTable[i].sh_size);
elfFile.seekg(shTable[i].sh_offset);
if (elfFile.fail()) return -1;
if (!elfFile.read((char*)dataTmp.data(), shTable[i].sh_size)) return -1;
data.resize(shTable[i].sh_size);
if (!elfFile.read(data.data(), shTable[i].sh_size)) return -1;
data = dataTmp;
return 0;
}
return -2;