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authorPhilippe Mathieu-Daudé <f4bug@amsat.org>2022-02-01 12:26:55 +0100
committerKevin Wolf <kwolf@redhat.com>2022-02-01 13:49:15 +0100
commit3c9c70347b8e636c08035f39288f8cdd2e68bbda (patch)
tree19ac03ff68efa3c5fae57b626c24ae74686a0835
parentac50419460cc45a66214e6d1c3e9d0d670522f8a (diff)
downloadfocaccia-qemu-3c9c70347b8e636c08035f39288f8cdd2e68bbda.tar.gz
focaccia-qemu-3c9c70347b8e636c08035f39288f8cdd2e68bbda.zip
block/export/fuse: Fix build failure on FreeBSD
When building on FreeBSD we get:

  [816/6851] Compiling C object libblockdev.fa.p/block_export_fuse.c.o
  ../block/export/fuse.c:628:16: error: use of undeclared identifier 'FALLOC_FL_KEEP_SIZE'
      if (mode & FALLOC_FL_KEEP_SIZE) {
                 ^
  ../block/export/fuse.c:651:16: error: use of undeclared identifier 'FALLOC_FL_PUNCH_HOLE'
      if (mode & FALLOC_FL_PUNCH_HOLE) {
                 ^
  ../block/export/fuse.c:652:22: error: use of undeclared identifier 'FALLOC_FL_KEEP_SIZE'
          if (!(mode & FALLOC_FL_KEEP_SIZE)) {
                       ^
  3 errors generated.
  FAILED: libblockdev.fa.p/block_export_fuse.c.o

Meson indeed reported FALLOC_FL_PUNCH_HOLE is not available:

  C compiler for the host machine: cc (clang 10.0.1 "FreeBSD clang version 10.0.1")
  Checking for function "fallocate" : NO
  Checking for function "posix_fallocate" : YES
  Header <linux/falloc.h> has symbol "FALLOC_FL_PUNCH_HOLE" : NO
  Header <linux/falloc.h> has symbol "FALLOC_FL_ZERO_RANGE" : NO
  ...

Similarly to commit 304332039 ("block/export/fuse.c: fix musl build"),
guard the code requiring FALLOC_FL_KEEP_SIZE / FALLOC_FL_PUNCH_HOLE
definitions under CONFIG_FALLOCATE_PUNCH_HOLE #ifdef'ry.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220201112655.344373-3-f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block/export/fuse.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/export/fuse.c b/block/export/fuse.c
index d25e478c0a..fdda8e3c81 100644
--- a/block/export/fuse.c
+++ b/block/export/fuse.c
@@ -625,9 +625,11 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode,
         return;
     }
 
+#ifdef CONFIG_FALLOCATE_PUNCH_HOLE
     if (mode & FALLOC_FL_KEEP_SIZE) {
         length = MIN(length, blk_len - offset);
     }
+#endif /* CONFIG_FALLOCATE_PUNCH_HOLE */
 
     if (!mode) {
         /* We can only fallocate at the EOF with a truncate */
@@ -648,6 +650,7 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode,
         ret = fuse_do_truncate(exp, offset + length, true,
                                PREALLOC_MODE_FALLOC);
     }
+#ifdef CONFIG_FALLOCATE_PUNCH_HOLE
     else if (mode & FALLOC_FL_PUNCH_HOLE) {
         if (!(mode & FALLOC_FL_KEEP_SIZE)) {
             fuse_reply_err(req, EINVAL);
@@ -662,6 +665,7 @@ static void fuse_fallocate(fuse_req_t req, fuse_ino_t inode, int mode,
             length -= size;
         } while (ret == 0 && length > 0);
     }
+#endif /* CONFIG_FALLOCATE_PUNCH_HOLE */
 #ifdef CONFIG_FALLOCATE_ZERO_RANGE
     else if (mode & FALLOC_FL_ZERO_RANGE) {
         if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + length > blk_len) {