From 01e49941d6560dfebfac39a2ffe49d3d24b35069 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Mon, 18 Nov 2024 16:34:03 +0100 Subject: reftable/system: provide thin wrapper for tempfile subsystem We use the tempfile subsystem to write temporary tables, but given that we're in the process of converting the reftable library to become standalone we cannot use this subsystem directly anymore. While we could in theory convert the code to use mkstemp(3p) instead, we'd lose access to our infrastructure that automatically prunes tempfiles via atexit(3p) or signal handlers. Provide a thin wrapper for the tempfile subsystem instead. Like this, the compatibility shim is fully self-contained in "reftable/system.c". Downstream users of the reftable library would have to implement their own tempfile shims by replacing "system.c" with a custom version. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- reftable/system.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 reftable/system.c (limited to 'reftable/system.c') diff --git a/reftable/system.c b/reftable/system.c new file mode 100644 index 0000000000..01f96f03d8 --- /dev/null +++ b/reftable/system.c @@ -0,0 +1,49 @@ +#include "system.h" +#include "basics.h" +#include "reftable-error.h" +#include "../tempfile.h" + +int tmpfile_from_pattern(struct reftable_tmpfile *out, const char *pattern) +{ + struct tempfile *tempfile; + + tempfile = mks_tempfile(pattern); + if (!tempfile) + return REFTABLE_IO_ERROR; + + out->path = tempfile->filename.buf; + out->fd = tempfile->fd; + out->priv = tempfile; + + return 0; +} + +int tmpfile_close(struct reftable_tmpfile *t) +{ + struct tempfile *tempfile = t->priv; + int ret = close_tempfile_gently(tempfile); + t->fd = -1; + if (ret < 0) + return REFTABLE_IO_ERROR; + return 0; +} + +int tmpfile_delete(struct reftable_tmpfile *t) +{ + struct tempfile *tempfile = t->priv; + int ret = delete_tempfile(&tempfile); + *t = REFTABLE_TMPFILE_INIT; + if (ret < 0) + return REFTABLE_IO_ERROR; + return 0; +} + +int tmpfile_rename(struct reftable_tmpfile *t, const char *path) +{ + struct tempfile *tempfile = t->priv; + int ret = rename_tempfile(&tempfile, path); + *t = REFTABLE_TMPFILE_INIT; + if (ret < 0) + return REFTABLE_IO_ERROR; + return 0; +} -- cgit 1.2.3-korg