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https://github.com/Mathewnd/Astral.git
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Matheus
114 lines
2.2 KiB
C
114 lines
2.2 KiB
C
#include <kernel/cred.h>
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#include <errno.h>
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#include <logging.h>
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#include <kernel/auth.h>
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int cred_setuids(cred_t *cred, int uid, int euid, int suid) {
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETRESUID, uid, euid, suid);
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if (error)
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return error;
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cred->uid = (uid == -1) ? cred->uid : uid;
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cred->euid = (euid == -1) ? cred->euid : euid;
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cred->suid = (suid == -1) ? cred->suid : suid;
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return 0;
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}
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int cred_setgids(cred_t *cred, int gid, int egid, int sgid) {
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETRESGID, gid, egid, sgid);
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if (error)
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return error;
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cred->gid = (gid == -1) ? cred->gid : gid;
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cred->egid = (egid == -1) ? cred->egid : egid;
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cred->sgid = (sgid == -1) ? cred->sgid : sgid;
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return 0;
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}
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int cred_setuid(cred_t *cred, int uid) {
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if (uid < 0)
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return EINVAL;
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETUID, uid, -1, -1);
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if (error)
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return error;
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if (CRED_IS_ESU(cred)) {
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cred->uid = uid;
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cred->euid = uid;
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cred->suid = uid;
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} else {
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cred->euid = uid;
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}
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return 0;
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}
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int cred_seteuid(cred_t *cred, int euid) {
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if (euid < 0)
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return EINVAL;
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETEUID, -1, euid, -1);
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if (error)
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return error;
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cred->euid = euid;
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return 0;
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}
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int cred_setgid(cred_t *cred, int gid) {
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if (gid < 0)
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return EINVAL;
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETGID, gid, -1, -1);
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if (error)
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return error;
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if (CRED_IS_ESU(cred)) {
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cred->gid = gid;
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cred->egid = gid;
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cred->sgid = gid;
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} else {
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cred->egid = gid;
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}
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return 0;
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}
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int cred_setegid(cred_t *cred, int egid) {
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if (egid < 0)
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return EINVAL;
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int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETEGID, -1, egid, -1);
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if (error)
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return error;
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cred->egid = egid;
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return 0;
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}
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void cred_doexec(cred_t *cred, int suid, int sgid) {
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if (suid > -1)
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cred->euid = suid;
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if (sgid > -1)
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cred->egid = sgid;
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cred->suid = cred->euid;
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cred->sgid = cred->egid;
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}
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void cred_getuids(cred_t *cred, int *uidp, int *euidp, int *suidp) {
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*uidp = cred->uid;
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*euidp = cred->euid;
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*suidp = cred->suid;
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}
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void cred_getgids(cred_t *cred, int *gidp, int *egidp, int *sgidp) {
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*gidp = cred->gid;
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*egidp = cred->egid;
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*sgidp = cred->sgid;
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}
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