thread.c File Reference

#include "c.h"
#include <pwd.h>

Include dependency graph for thread.c:

Go to the source code of this file.

Functions
char *	pqStrerror (int errnum, char *strerrbuf, size_t buflen)
int	pqGetpwuid (uid_t uid, struct passwd *resultbuf, char *buffer, size_t buflen, struct passwd **result)
int	pqGethostbyname (const char *name, struct hostent *resultbuf, char *buffer, size_t buflen, struct hostent **result, int *herrno)

Function Documentation

int pqGethostbyname	(	const char *	name,
		struct hostent *	resultbuf,
		char *	buffer,
		size_t	buflen,
		struct hostent **	result,
		int *	herrno
	)

Definition at line 117 of file thread.c.

References NULL.

Referenced by getaddrinfo().

{
#if defined(FRONTEND) && defined(ENABLE_THREAD_SAFETY) && defined(HAVE_GETHOSTBYNAME_R)

    /*
     * broken (well early POSIX draft) gethostbyname_r() which returns 'struct
     * hostent *'
     */
    *result = gethostbyname_r(name, resultbuf, buffer, buflen, herrno);
    return (*result == NULL) ? -1 : 0;
#else

    /* no gethostbyname_r(), just use gethostbyname() */
    *result = gethostbyname(name);

    if (*result != NULL)
        *herrno = h_errno;

    if (*result != NULL)
        return 0;
    else
        return -1;
#endif
}

int pqGetpwuid	(	uid_t	uid,
		struct passwd *	resultbuf,
		char *	buffer,
		size_t	buflen,
		struct passwd **	result
	)

Definition at line 95 of file thread.c.

References NULL.

Referenced by get_home_path(), pg_fe_getauthname(), PQconnectPoll(), and pqGetHomeDirectory().

{
#if defined(FRONTEND) && defined(ENABLE_THREAD_SAFETY) && defined(HAVE_GETPWUID_R)
    return getpwuid_r(uid, resultbuf, buffer, buflen, result);
#else
    /* no getpwuid_r() available, just use getpwuid() */
    errno = 0;
    *result = getpwuid(uid);
    /* paranoia: ensure we return zero on success */
    return (*result == NULL) ? errno : 0;
#endif
}

char* pqStrerror	(	int	errnum,
		char *	strerrbuf,
		size_t	buflen
	)

Definition at line 61 of file thread.c.

References strerror(), and strlcpy().

Referenced by initialize_SSL(), lo_export(), lo_import_internal(), pg_fe_getauthname(), pg_local_sendauth(), and PQconnectPoll().

{
#if defined(FRONTEND) && defined(ENABLE_THREAD_SAFETY) && defined(HAVE_STRERROR_R)
    /* reentrant strerror_r is available */
#ifdef STRERROR_R_INT
    /* SUSv3 version */
    if (strerror_r(errnum, strerrbuf, buflen) == 0)
        return strerrbuf;
    else
        return "Unknown error";
#else
    /* GNU libc */
    return strerror_r(errnum, strerrbuf, buflen);
#endif
#else
    /* no strerror_r() available, just use strerror */
    strlcpy(strerrbuf, strerror(errnum), buflen);

    return strerrbuf;
#endif
}