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Fix zoneid when USER_NS is disabled 

getzoneid() should return GLOBAL_ZONEID instead of 0 when USER_NS is disabled.

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ilkka Sovanto <github@ilkka.kapsi.fi>
Closes #15560
This commit is contained in:
Wraithh 2023-11-29 19:55:17 +02:00 committed by GitHub
parent 7d68900af3
commit 8adf2e3066
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1 changed files with 4 additions and 4 deletions
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8
lib/libspl/os/linux/zone.c
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@ -42,20 +42,20 @@ getzoneid(void)
int c = snprintf(path, sizeof (path), "/proc/self/ns/user");
/* This API doesn't have any error checking... */
if (c < 0 || c >= sizeof (path))
return (0);
return (GLOBAL_ZONEID);
ssize_t r = readlink(path, buf, sizeof (buf) - 1);
if (r < 0)
return (0);
return (GLOBAL_ZONEID);
cp = strchr(buf, '[');
if (cp == NULL)
return (0);
return (GLOBAL_ZONEID);
cp++;
unsigned long n = strtoul(cp, NULL, 10);
if (n == ULONG_MAX && errno == ERANGE)
return (0);
return (GLOBAL_ZONEID);
zoneid_t z = (zoneid_t)n;
return (z);