Hello:
This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@xxxxxxxxxxxxx>:
On Mon, 15 Aug 2022 17:22:05 +0100 you wrote:
> When bpftool is linked against libcap, the library runs a "constructor"
> function to compute the number of capabilities of the running kernel
> [0], at the beginning of the execution of the program. As part of this,
> it performs multiple calls to prctl(). Some of these may fail, and set
> errno to a non-zero value:
>
> # strace -e prctl ./bpftool version
> prctl(PR_CAPBSET_READ, CAP_MAC_OVERRIDE) = 1
> prctl(PR_CAPBSET_READ, 0x30 /* CAP_??? */) = -1 EINVAL (Invalid argument)
> prctl(PR_CAPBSET_READ, CAP_CHECKPOINT_RESTORE) = 1
> prctl(PR_CAPBSET_READ, 0x2c /* CAP_??? */) = -1 EINVAL (Invalid argument)
> prctl(PR_CAPBSET_READ, 0x2a /* CAP_??? */) = -1 EINVAL (Invalid argument)
> prctl(PR_CAPBSET_READ, 0x29 /* CAP_??? */) = -1 EINVAL (Invalid argument)
> ** fprintf added at the top of main(): we have errno == 1
> ./bpftool v7.0.0
> using libbpf v1.0
> features: libbfd, libbpf_strict, skeletons
> +++ exited with 0 +++
>
> [...]
Here is the summary with links:
- [bpf-next,v2] bpftool: Clear errno after libcap's checks
https://git.kernel.org/bpf/bpf-next/c/cea558855c39
You are awesome, thank you!
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