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Correction of getprotobynumber_r() variant detection (musl libc)

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This commit is contained in:
Gerhard Rieger 2022-08-13 16:53:11 +02:00
parent ee23bccee7
commit 75cb44bc90
4 changed files with 14 additions and 6 deletions
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4
CHANGES
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@ -43,6 +43,10 @@ Porting:
IP_ADD_SOURCE_MEMBERSHIP but not struct ip_mreq_source
Thanks to Justin Yackoski for sending a patch.
configure.ac's detection of getprotobynumber_r() variant did not
recognize if this function does not exist, e.g. on Musl libc.
Thanks to Alexander Kanavin and Baruch Siach for sending patches.
Testing:
Unset SOCAT_MAIN_WAIT on informational Socat calls

6
configure.ac
View file

@ -137,13 +137,13 @@ AC_MSG_RESULT($sc_cv_have_prototype_hstrerror)
# getprotobynumber_r() is not standardized
AC_MSG_CHECKING(for getprotobynumber_r() variant)
AC_CACHE_VAL(sc_cv_getprotobynumber_r,
[AC_TRY_COMPILE([#include <stddef.h>
[AC_TRY_LINK([#include <stddef.h>
#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL,1024,NULL);],
[sc_cv_getprotobynumber_r=1; tmp_bynum_variant=Linux],
[AC_TRY_COMPILE([#include <stddef.h>
[AC_TRY_LINK([#include <stddef.h>
#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL,1024);],
[sc_cv_getprotobynumber_r=2; tmp_bynum_variant=Solaris],
[AC_TRY_COMPILE([#include <stddef.h>
[AC_TRY_LINK([#include <stddef.h>
#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL);],
[sc_cv_getprotobynumber_r=3; tmp_bynum_variant=AIX],

6
fdname.c
View file

@ -261,8 +261,12 @@ int sockname(int fd, FILE *outfile, char style) {
}
strncpy(protoname, protoentp->p_name, sizeof(protoname));
#elif HAVE_GETPROTOBYNUMBER_R==2 /* Solaris */
protoentp = getprotobynumber(proto);
{
# define FILAN_GETPROTOBYNUMBER_R_BUFLEN 1024
char buffer[FILAN_GETPROTOBYNUMBER_R_BUFLEN];
protoentp = getprotobynumber_r(proto, &protoent, buffer, FILAN_GETPROTOBYNUMBER_R_BUFLEN);
strncpy(protoname, protoentp->p_name, sizeof(protoname));
}
#elif HAVE_GETPROTOBYNUMBER_R==3 /* AIX */
{
struct protoent_data proto_data;