udiskslinuxfilesystem: Fix TOCTOU race in mount point directory creation#1515
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udiskslinuxfilesystem: Fix TOCTOU race in mount point directory creation#1515ajax-semenko-d wants to merge 1 commit into
ajax-semenko-d wants to merge 1 commit into
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Rename calculate_mount_point() to create_mount_point() and move the g_mkdir(2) call inside the uniquification loop. Using mkdir(2) as the existence check instead of g_file_test() + a separate mkdir(2) closes the window where two concurrent mount requests could compute the same candidate path and both succeed the test before either creates the directory. On failure after the directory is already created, callers now call g_rmdir() to release the reserved directory before returning an error. Fixes: storaged-project#1513 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Rename calculate_mount_point() to create_mount_point() and move the g_mkdir(2) call inside the uniquification loop. Using mkdir(2) as the existence check instead of g_file_test() + a separate mkdir(2) closes the window where two concurrent mount requests could compute the same candidate path and both succeed the test before either creates the directory.
On failure after the directory is already created, callers now call g_rmdir() to release the reserved directory before returning an error.
Fixes: #1513