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ba1871dac0
Use github.com/containers/psgo instead of execing `ps (1)`. The psgo library enables a much more flexible interface with respect to which data to be printed (e.g., capabilities, seccomp mode, PID, PCPU, etc.) while the output can be parsed reliably. The library does not use ps (1) but parses /proc and /dev instead. To list the processes of a given container, psgo will join the mount namespace of the given container and extract all data from there. Notice that this commit breaks compatibility with docker-top. Signed-off-by: Valentin Rothberg <vrothberg@suse.com> Closes: #1113 Approved by: rhatdan
31 lines
1.0 KiB
Go
31 lines
1.0 KiB
Go
// +build linux
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package libpod
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import (
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"strconv"
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"strings"
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"github.com/containers/psgo/ps"
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)
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// GetContainerPidInformation returns process-related data of all processes in
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// the container. The output data can be controlled via the `descriptors`
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// argument which expects format descriptors and supports all AIXformat
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// descriptors of ps (1) plus some additional ones to for instance inspect the
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// set of effective capabilities. Eeach element in the returned string slice
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// is a tab-separated string.
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//
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// For more details, please refer to github.com/containers/psgo.
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func (c *Container) GetContainerPidInformation(descriptors []string) ([]string, error) {
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pid := strconv.Itoa(c.state.PID)
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format := strings.Join(descriptors, ",")
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return ps.JoinNamespaceAndProcessInfo(pid, format)
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}
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// GetContainerPidInformationDescriptors returns a string slice of all supported
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// format descriptors of GetContainerPidInformation.
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func GetContainerPidInformationDescriptors() ([]string, error) {
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return ps.ListDescriptors(), nil
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}
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