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libzfs: make userquota_propname_decode reentrant 

Signed-off-by: Richard Kojedzinszky <richard@kojedz.in>
This commit is contained in:
Richard Kojedzinszky 2024-01-17 20:48:02 +01:00
parent a0b2a93c41
commit 9f7467ea7e
1 changed files with 9 additions and 2 deletions
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11
lib/libzfs/libzfs_dataset.c
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@ -3170,6 +3170,9 @@ userquota_propname_decode(const char *propname, boolean_t zoned,
boolean_t isproject; boolean_t isproject;
struct passwd *pw; struct passwd *pw;
struct group *gr; struct group *gr;
struct passwd rpwd;
struct group rgrp;
char rgetbuf[1024];
domain[0] = '\0'; domain[0] = '\0';
@ -3195,11 +3198,15 @@ userquota_propname_decode(const char *propname, boolean_t zoned,
cp = strchr(propname, '@') + 1; cp = strchr(propname, '@') + 1;
if (isuser && (pw = getpwnam(cp)) != NULL) { if (isuser &&
getpwnam_r(cp, &rpwd, rgetbuf, sizeof (rgetbuf), &pw) == 0 &&
pw != NULL) {
if (zoned && getzoneid() == GLOBAL_ZONEID) if (zoned && getzoneid() == GLOBAL_ZONEID)
return (ENOENT); return (ENOENT);
*ridp = pw->pw_uid; *ridp = pw->pw_uid;
} else if (isgroup && (gr = getgrnam(cp)) != NULL) { } else if (isgroup &&
getgrnam_r(cp, &rgrp, rgetbuf, sizeof (rgetbuf), &gr) == 0 &&
gr != NULL) {
if (zoned && getzoneid() == GLOBAL_ZONEID) if (zoned && getzoneid() == GLOBAL_ZONEID)
return (ENOENT); return (ENOENT);
*ridp = gr->gr_gid; *ridp = gr->gr_gid;