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unix: get mainline kernel version in Debian (#4131)

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In Debian, the mainline kernel version is reported via the `uname()`
`version` field.
This commit is contained in:
Ben Noordhuis 2023-08-31 11:45:27 +02:00 committed by Santiago Gimeno
parent e2c8fed7b3
commit 0d78f3c758
1 changed files with 10 additions and 0 deletions
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10
src/unix/linux.c
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@ -324,6 +324,7 @@ unsigned uv__kernel_version(void) {
unsigned minor;
unsigned patch;
char v_sig[256];
char* needle;
version = atomic_load_explicit(&cached_version, memory_order_relaxed);
if (version != 0)
@ -342,6 +343,15 @@ unsigned uv__kernel_version(void) {
if (-1 == uname(&u))
return 0;
/* In Debian we need to check `version` instead of `release` to extract the
* mainline kernel version. This is an example of how it looks like:
* #1 SMP Debian 5.10.46-4 (2021-08-03)
*/
needle = strstr(u.version, "Debian ");
if (needle != NULL)
if (3 == sscanf(needle, "Debian %u.%u.%u", &major, &minor, &patch))
goto calculate_version;
if (3 != sscanf(u.release, "%u.%u.%u", &major, &minor, &patch))
return 0;