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Merge pull request #1233 from dezgeg/splice

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nix-daemon: Don't splice with len=SIZE_MAX
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Eelco Dolstra 2017-02-13 14:33:18 +01:00 committed by GitHub
parent 4724903c78 649a81bcd6
commit 77a78af678
1 changed files with 3 additions and 2 deletions
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5
src/nix-daemon/nix-daemon.cc
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@ -23,6 +23,7 @@
#include <pwd.h> #include <pwd.h>
#include <grp.h> #include <grp.h>
#include <fcntl.h> #include <fcntl.h>
#include <limits.h>
#if __APPLE__ || __FreeBSD__ #if __APPLE__ || __FreeBSD__
#include <sys/ucred.h> #include <sys/ucred.h>
@ -967,14 +968,14 @@ int main(int argc, char * * argv)
if (select(nfds, &fds, nullptr, nullptr, nullptr) == -1) if (select(nfds, &fds, nullptr, nullptr, nullptr) == -1)
throw SysError("waiting for data from client or server"); throw SysError("waiting for data from client or server");
if (FD_ISSET(s, &fds)) { if (FD_ISSET(s, &fds)) {
auto res = splice(s, nullptr, STDOUT_FILENO, nullptr, SIZE_MAX, SPLICE_F_MOVE); auto res = splice(s, nullptr, STDOUT_FILENO, nullptr, SSIZE_MAX, SPLICE_F_MOVE);
if (res == -1) if (res == -1)
throw SysError("splicing data from daemon socket to stdout"); throw SysError("splicing data from daemon socket to stdout");
else if (res == 0) else if (res == 0)
throw EndOfFile("unexpected EOF from daemon socket"); throw EndOfFile("unexpected EOF from daemon socket");
} }
if (FD_ISSET(STDIN_FILENO, &fds)) { if (FD_ISSET(STDIN_FILENO, &fds)) {
auto res = splice(STDIN_FILENO, nullptr, s, nullptr, SIZE_MAX, SPLICE_F_MOVE); auto res = splice(STDIN_FILENO, nullptr, s, nullptr, SSIZE_MAX, SPLICE_F_MOVE);
if (res == -1) if (res == -1)
throw SysError("splicing data from stdin to daemon socket"); throw SysError("splicing data from stdin to daemon socket");
else if (res == 0) else if (res == 0)