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ghosts: Add comment about shared path allocation

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Ghost remaps allocate path with shmalloc. Add comment
why this is such.

✓ travis-ci: success for Sanitize initialization bits
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Pavel Emelyanov
2017-05-18 12:35:48 +03:00
committed by Andrei Vagin
parent 2356e5ffc6
commit 23e092f709
1 changed files with 7 additions and 0 deletions
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7
criu/files-reg.c
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@@ -259,6 +259,13 @@ static int collect_remap_ghost(struct reg_file_info *rfi,
if (!gf) if (!gf)
return -1; return -1;
/*
* The rpath is shmalloc-ed because we create the ghost
* file in root task context and generate its path there.
* However the path should be visible by the criu task
* in order to remove the ghost files from root FS (see
* try_clean_remaps()).
*/
gf->remap.rpath = shmalloc(PATH_MAX); gf->remap.rpath = shmalloc(PATH_MAX);
if (!gf->remap.rpath) if (!gf->remap.rpath)
return -1; return -1;