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| author | Amir Goldstein <amir73il@gmail.com> | 2023-10-09 18:37:11 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-10-19 12:03:15 +0300 |
| commit | 08582d678fcf11fc86188f0b92239d3d49667d8e (patch) | |
| tree | c4cc4f56b752f97a3eb90f2886904b49d72028c9 /kernel/trace | |
| parent | 83bc1d294130cc471a89ce10770daa281a93fcb0 (diff) | |
| download | linux-08582d678fcf11fc86188f0b92239d3d49667d8e.tar.xz | |
fs: create helper file_user_path() for user displayed mapped file path
Overlayfs uses backing files with "fake" overlayfs f_path and "real"
underlying f_inode, in order to use underlying inode aops for mapped
files and to display the overlayfs path in /proc/<pid>/maps.
In preparation for storing the overlayfs "fake" path instead of the
underlying "real" path in struct backing_file, define a noop helper
file_user_path() that returns f_path for now.
Use the new helper in procfs and kernel logs whenever a path of a
mapped file is displayed to users.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231009153712.1566422-3-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_output.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index db575094c498..d8b302d01083 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -404,7 +404,7 @@ static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, vmstart = vma->vm_start; } if (file) { - ret = trace_seq_path(s, &file->f_path); + ret = trace_seq_path(s, file_user_path(file)); if (ret) trace_seq_printf(s, "[+0x%lx]", ip - vmstart); |