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1c274b738e
still some problems, at least with signal handling and locking on SMP. Submitted by: dick
109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
#include <stddef.h>
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#include <string.h>
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#include <errno.h>
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#include <pwd.h>
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#include "pthread.h"
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static pthread_mutex_t getpw_mutex = PTHREAD_MUTEX_INITIALIZER;
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static int
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convert (struct passwd *ret, struct passwd *result,
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char *buf, int buflen)
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{
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int len;
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if (!buf) return -1;
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*result = *ret;
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result->pw_name = (char *) buf;
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/* This is the size. */
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len = strlen (ret->pw_name) + 1;
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if (len > buflen) return -1;
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buflen -= len;
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buf += len;
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strcpy (result->pw_name, ret->pw_name);
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result->pw_passwd = (char *) buf;
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/* This is the size. */
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len = strlen (ret->pw_passwd) + 1;
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if (len > buflen) return -1;
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buflen -= len;
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buf += len;
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strcpy (result->pw_passwd, ret->pw_passwd);
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result->pw_gecos = (char *) buf;
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/* This is the size. */
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len = strlen (ret->pw_gecos) + 1;
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if (len > buflen) return -1;
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buflen -= len;
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buf += len;
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strcpy (result->pw_gecos, ret->pw_gecos);
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result->pw_dir = (char *) buf;
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/* This is the size. */
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len = strlen (ret->pw_dir) + 1;
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if (len > buflen) return -1;
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buflen -= len;
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buf += len;
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strcpy (result->pw_dir, ret->pw_dir);
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result->pw_shell = (char *) buf;
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/* This is the size. */
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len = strlen (ret->pw_shell) + 1;
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if (len > buflen) return -1;
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buflen -= len;
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buf += len;
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strcpy (result->pw_shell, ret->pw_shell);
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return 0;
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}
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int getpwnam_r (const char *name, struct passwd *result,
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char *buffer, size_t buflen,
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struct passwd ** resptr)
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{
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struct passwd * p;
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int retval;
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pthread_mutex_lock (&getpw_mutex);
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p = getpwnam (name);
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if (p == NULL) {
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*resptr = NULL;
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retval = ESRCH;
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} else
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if (convert (p, result, buffer, buflen) != 0) {
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*resptr = NULL;
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retval = ERANGE;
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} else {
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*resptr = result;
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retval = 0;
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}
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pthread_mutex_unlock (&getpw_mutex);
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return retval;
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}
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int getpwuid_r (uid_t uid, struct passwd *result,
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char *buffer, size_t buflen,
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struct passwd ** resptr)
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{
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struct passwd * p;
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int retval;
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pthread_mutex_lock (&getpw_mutex);
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p = getpwuid (uid);
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if (p == NULL) {
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*resptr = NULL;
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retval = ESRCH;
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} else
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if (convert (p, result, buffer, buflen) != 0) {
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*resptr = NULL;
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retval = ERANGE;
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} else {
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*resptr = result;
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retval = 0;
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}
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pthread_mutex_unlock (&getpw_mutex);
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return retval;
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}
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