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-rw-r--r--otherlibs/unix/fchmod.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/otherlibs/unix/fchmod.c b/otherlibs/unix/fchmod.c
index a6e8ee903..ba5e55721 100644
--- a/otherlibs/unix/fchmod.c
+++ b/otherlibs/unix/fchmod.c
@@ -21,7 +21,11 @@
CAMLprim value unix_fchmod(value fd, value perm)
{
- if (fchmod(Int_val(fd), Int_val(perm)) == -1) uerror("fchmod", Nothing);
+ int result;
+ caml_enter_blocking_section();
+ result = fchmod(Int_val(fd), Int_val(perm));
+ caml_leave_blocking_section();
+ if (result == -1) uerror("fchmod", Nothing);
return Val_unit;
}