uname: what ioctl does it use?

Does anyone know if uname() makes an ioctl() call directly or indirectly? I reviewed the source, however didn't see that it does. I also used strace and did not see the kernel call made. Thanks strace uname execve("/usr/bin/uname", ["uname"], 0x7fffe60bef30 /* 35 vars */) = 0 brk(NULL) = 0x559dc7796000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=161332, ...}) = 0 mmap(NULL, 161332, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fd0c9384000 close(3) = 0 openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260A\2\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1820400, ...}) = 0 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd0c9382000 mmap(NULL, 1832960, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fd0c91c2000 mprotect(0x7fd0c91e4000, 1654784, PROT_NONE) = 0 mmap(0x7fd0c91e4000, 1339392, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7fd0c91e4000 mmap(0x7fd0c932b000, 311296, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x169000) = 0x7fd0c932b000 mmap(0x7fd0c9378000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b5000) = 0x7fd0c9378000 mmap(0x7fd0c937e000, 14336, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fd0c937e000 close(3) = 0 arch_prctl(ARCH_SET_FS, 0x7fd0c9383540) = 0 mprotect(0x7fd0c9378000, 16384, PROT_READ) = 0 mprotect(0x559dc6f13000, 4096, PROT_READ) = 0 mprotect(0x7fd0c93d3000, 4096, PROT_READ) = 0 munmap(0x7fd0c9384000, 161332) = 0 brk(NULL) = 0x559dc7796000 brk(0x559dc77b7000) = 0x559dc77b7000 openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=3031632, ...}) = 0 mmap(NULL, 3031632, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fd0c8edd000 close(3) = 0 uname({sysname="Linux", nodename="debian", ...}) = 0 fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}) = 0 write(1, "Linux\n", 6Linux ) = 6 close(1) = 0 close(2) = 0 exit_group(0) = ? +++ exited with 0 +++