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qmuxd_wrapper: Reduce dlsym() load (don't call it again and again)

This commit is contained in:
Harald Welte 2016-12-25 18:13:11 +01:00
parent 86bd71c750
commit daacff9106
1 changed files with 12 additions and 6 deletions
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18
qmi/ld_preload_wrapper/qmuxd_wrapper.c
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@ -70,7 +70,8 @@ ssize_t write(int fd, const void *buf, size_t count)
{
dump_qmuxd(fd, 1, buf, count);
real_write = dlsym(RTLD_NEXT, "write");
if (!real_write)
real_write = dlsym(RTLD_NEXT, "write");
return real_write(fd, buf, count);
}
@ -78,7 +79,8 @@ ssize_t read(int fd, void *buf, size_t count)
{
dump_qmuxd(fd, 0, buf, count);
real_read = dlsym(RTLD_NEXT, "read");
if (!real_read)
real_read = dlsym(RTLD_NEXT, "read");
return real_read(fd, buf, count);
}
@ -86,7 +88,8 @@ ssize_t send(int fd, const void *buf, size_t count, int flags)
{
dump_qmuxd(fd, 1, buf, count);
real_send = dlsym(RTLD_NEXT, "send");
if (!real_send)
real_send = dlsym(RTLD_NEXT, "send");
return real_send(fd, buf, count, flags);
}
@ -94,7 +97,8 @@ ssize_t recv(int fd, void *buf, size_t len, int flags)
{
dump_qmuxd(fd, 0, buf, len);
real_recv = dlsym(RTLD_NEXT, "recv");
if (!real_recv)
real_recv = dlsym(RTLD_NEXT, "recv");
return real_recv(fd, buf, len, flags);
}
@ -108,7 +112,8 @@ int connect(int fd, const struct sockaddr *addr, socklen_t addrlen)
}
}
real_connect = dlsym(RTLD_NEXT, "connect");
if (!real_connect)
real_connect = dlsym(RTLD_NEXT, "connect");
return real_connect(fd, addr, addrlen);
}
@ -122,6 +127,7 @@ int close(int fd)
trace_fds[i] = -1;
}
}
real_close = dlsym(RTLD_NEXT, "close");
if (!real_close)
real_close = dlsym(RTLD_NEXT, "close");
return real_close(fd);
}