cregit-Linux how code gets into the kernel

Release 4.10 fs/nfsd/auth.c

Directory: fs/nfsd
/* Copyright (C) 1995, 1996 Olaf Kirch <> */

#include <linux/sched.h>
#include "nfsd.h"
#include "auth.h"

int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp) { struct exp_flavor_info *f; struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors; for (f = exp->ex_flavors; f < end; f++) { if (f->pseudoflavor == rqstp->rq_cred.cr_flavor) return f->flags; } return exp->ex_flags; }


j. bruce fieldsj. bruce fields72100.00%2100.00%

int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp) { struct group_info *rqgi; struct group_info *gi; struct cred *new; int i; int flags = nfsexp_flags(rqstp, exp); validate_process_creds(); /* discard any old override before preparing the new set */ revert_creds(get_cred(current_real_cred())); new = prepare_creds(); if (!new) return -ENOMEM; new->fsuid = rqstp->rq_cred.cr_uid; new->fsgid = rqstp->rq_cred.cr_gid; rqgi = rqstp->rq_cred.cr_group_info; if (flags & NFSEXP_ALLSQUASH) { new->fsuid = exp->ex_anon_uid; new->fsgid = exp->ex_anon_gid; gi = groups_alloc(0); if (!gi) goto oom; } else if (flags & NFSEXP_ROOTSQUASH) { if (uid_eq(new->fsuid, GLOBAL_ROOT_UID)) new->fsuid = exp->ex_anon_uid; if (gid_eq(new->fsgid, GLOBAL_ROOT_GID)) new->fsgid = exp->ex_anon_gid; gi = groups_alloc(rqgi->ngroups); if (!gi) goto oom; for (i = 0; i < rqgi->ngroups; i++) { if (gid_eq(GLOBAL_ROOT_GID, rqgi->gid[i])) gi->gid[i] = exp->ex_anon_gid; else gi->gid[i] = rqgi->gid[i]; } } else { gi = get_group_info(rqgi); } if (uid_eq(new->fsuid, INVALID_UID)) new->fsuid = exp->ex_anon_uid; if (gid_eq(new->fsgid, INVALID_GID)) new->fsgid = exp->ex_anon_gid; set_groups(new, gi); put_group_info(gi); if (!uid_eq(new->fsuid, GLOBAL_ROOT_UID)) new->cap_effective = cap_drop_nfsd_set(new->cap_effective); else new->cap_effective = cap_raise_nfsd_set(new->cap_effective, new->cap_permitted); validate_process_creds(); put_cred(override_creds(new)); put_cred(new); validate_process_creds(); return 0; oom: abort_creds(new); return -ENOMEM; }


david howellsdavid howells14336.67%523.81%
andrew mortonandrew morton348.72%314.29%
eric w. biedermaneric w. biederman317.95%29.52%
j. bruce fieldsj. bruce fields246.15%314.29%
alexey dobriyanalexey dobriyan164.10%14.76%
andrew g. morganandrew g. morgan102.56%14.76%
neil brownneil brown92.31%14.76%
kinglong meekinglong mee20.51%14.76%
jeff laytonjeff layton20.51%14.76%

Overall Contributors

david howellsdavid howells14330.30%519.23%
j. bruce fieldsj. bruce fields9920.97%623.08%
andrew mortonandrew morton347.20%311.54%
eric w. biedermaneric w. biederman316.57%27.69%
alexey dobriyanalexey dobriyan163.39%13.85%
andrew g. morganandrew g. morgan102.12%13.85%
neil brownneil brown91.91%13.85%
jeff laytonjeff layton20.42%13.85%
kinglong meekinglong mee20.42%13.85%
harvey harrisonharvey harrison10.21%13.85%
boaz harroshboaz harrosh10.21%13.85%
Directory: fs/nfsd
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