From: Russell King <rmk+ker...@arm.linux.org.uk> recordmcount edits the file in-place, which can cause problems when using ccache in hardlink mode. Arrange for recordmcount to break a hardlinked object.
Link: http://lkml.kernel.org/r/e1a7mvt-0000et...@rmk-pc.arm.linux.org.uk Cc: sta...@vger.kernel.org # 2.6.37+ Signed-off-by: Russell King <rmk+ker...@arm.linux.org.uk> Signed-off-by: Steven Rostedt <rost...@goodmis.org> --- scripts/recordmcount.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c index 698768bdc581..91705ef30402 100644 --- a/scripts/recordmcount.c +++ b/scripts/recordmcount.c @@ -211,6 +211,20 @@ static void *mmap_file(char const *fname) addr = umalloc(sb.st_size); uread(fd_map, addr, sb.st_size); } + if (sb.st_nlink != 1) { + /* file is hard-linked, break the hard link */ + close(fd_map); + if (unlink(fname) < 0) { + perror(fname); + fail_file(); + } + fd_map = open(fname, O_RDWR | O_CREAT, sb.st_mode); + if (fd_map < 0) { + perror(fname); + fail_file(); + } + uwrite(fd_map, addr, sb.st_size); + } return addr; } -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
