diff options
| -rw-r--r-- | netsniff-ng.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/netsniff-ng.c b/netsniff-ng.c index d6782ac..afa522f 100644 --- a/netsniff-ng.c +++ b/netsniff-ng.c @@ -570,12 +570,16 @@ static void read_pcap(struct ctx *ctx) if (ctx->pcap == PCAP_OPS_MM) ctx->pcap = PCAP_OPS_SG; } else { + /* O_NOATIME requires privileges, in case we don't have + * them, retry without them at a minor cost of updating + * atime in case the fs has been mounted as such. + */ fd = open(ctx->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME); if (fd < 0 && errno == EPERM) fd = open_or_die(ctx->device_in, O_RDONLY | O_LARGEFILE); if (fd < 0) panic("Cannot open file %s! %s.\n", ctx->device_in, - strerror(errno)); + strerror(errno)); } if (__pcap_io->init_once_pcap) |