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Corrected VSOCK CID query; minor VSOCK features

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This commit is contained in:
Gerhard Rieger 2023-06-12 08:37:49 +02:00
parent b05b360320
commit 10a741eb60
6 changed files with 88 additions and 21 deletions

26
hostan.c
View file

@ -19,6 +19,8 @@
static int iffan(FILE *outfile);
static int vsockan(FILE *outfile);
int hostan(FILE *outfile) {
fprintf(outfile, "\nC TYPE SIZES\n");
@ -40,6 +42,9 @@ int hostan(FILE *outfile) {
#if _WITH_SOCKET && (_WITH_IP4 || _WITH_IP6)
fprintf(outfile, "\nIP INTERFACES\n");
iffan(outfile);
#endif
#if WITH_VSOCK
vsockan(outfile);
#endif
return 0;
}
@ -101,3 +106,24 @@ static int iffan(FILE *outfile) {
return 0;
}
#endif /* _WITH_SOCKET */
#if WITH_VSOCK
static int vsockan(FILE *outfile) {
unsigned int cid;
int vsock;
if ((vsock = Open("/dev/vsock", O_RDONLY, 0)) < 0 ) {
Warn1("open(\"/dev/vsock\", ...): %s", strerror(errno));
} else if (Ioctl(vsock, IOCTL_VM_SOCKETS_GET_LOCAL_CID, &cid) < 0) {
Warn2("ioctl(%d, IOCTL_VM_SOCKETS_GET_LOCAL_CID, ...): %s",
vsock, strerror(errno));
} else {
Notice1("VSOCK CID=%u", cid);
fprintf(outfile, "\nVSOCK_CID = %u\n", cid);
}
if (vsock >= 0) {
Close(vsock);
}
return 0;
}
#endif /* WITH_VSOCK */