wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-27 08:31:16 +02:00
Code Activity

Handle importing NARs containing files greater than 4 GiB

Browse source 
Also templatize readInt() to work for various integer types.
This commit is contained in:
Eelco Dolstra 2017-03-01 13:52:54 +01:00
parent 0780805246
commit c4a40949d9
No known key found for this signature in database
GPG key ID: 8170B4726D7198DE
7 changed files with 84 additions and 81 deletions
Download patch file Download diff file Expand all files Collapse all files

43
src/libutil/serialise.cc
View file

@ -194,39 +194,9 @@ void readPadding(size_t len, Source & source)
}
unsigned int readInt(Source & source)
{
unsigned char buf[8];
source(buf, sizeof(buf));
if (buf[4] || buf[5] || buf[6] || buf[7])
throw SerialisationError("implementation cannot deal with > 32-bit integers");
return
buf[0] |
(buf[1] << 8) |
(buf[2] << 16) |
(buf[3] << 24);
}
unsigned long long readLongLong(Source & source)
{
unsigned char buf[8];
source(buf, sizeof(buf));
return
((unsigned long long) buf[0]) |
((unsigned long long) buf[1] << 8) |
((unsigned long long) buf[2] << 16) |
((unsigned long long) buf[3] << 24) |
((unsigned long long) buf[4] << 32) |
((unsigned long long) buf[5] << 40) |
((unsigned long long) buf[6] << 48) |
((unsigned long long) buf[7] << 56);
}
size_t readString(unsigned char * buf, size_t max, Source & source)
{
size_t len = readInt(source);
auto len = readNum<size_t>(source);
if (len > max) throw Error("string is too long");
source(buf, len);
readPadding(len, source);
@ -236,7 +206,7 @@ size_t readString(unsigned char * buf, size_t max, Source & source)
string readString(Source & source)
{
size_t len = readInt(source);
auto len = readNum<size_t>(source);
auto buf = std::make_unique<unsigned char[]>(len);
source(buf.get(), len);
readPadding(len, source);
@ -250,16 +220,9 @@ Source & operator >> (Source & in, string & s)
}
Source & operator >> (Source & in, unsigned int & n)
{
n = readInt(in);
return in;
}
template<class T> T readStrings(Source & source)
{
unsigned int count = readInt(source);
auto count = readNum<size_t>(source);
T ss;
while (count--)
ss.insert(ss.end(), readString(source));