diff options
Diffstat (limited to 'nfs')
| -rw-r--r-- | nfs/main.c | 168 |
1 files changed, 161 insertions, 7 deletions
@@ -25,24 +25,178 @@ #include "nfs.h" #include <netinet/in.h> #include <unistd.h> +#include <string.h> #include <maptime.h> +#include <argp.h> -int stat_timeout = 3; -int cache_timeout = 3; +#define DEFAULT_SOFT_RETRIES 3 /* times */ +#define DEFAULT_STAT_TIMEOUT 3 /* seconds */ +#define DEFAULT_CACHE_TIMEOUT 3 /* seconds */ +#define DEFAULT_READ_SIZE 8192 /* bytes */ +#define DEFAULT_WRITE_SIZE 8192 /* bytes */ + +int stat_timeout = DEFAULT_STAT_TIMEOUT; +int cache_timeout = DEFAULT_CACHE_TIMEOUT; int initial_transmit_timeout = 1; int max_transmit_timeout = 30; -int soft_retries = 3; +int soft_retries = DEFAULT_SOFT_RETRIES; int mounted_soft = 1; -int read_size = 8192; -int write_size = 8192; +int read_size = DEFAULT_READ_SIZE; +int write_size = DEFAULT_WRITE_SIZE; + +#define OPT_SOFT 's' +#define OPT_HARD 'h' +#define OPT_RSIZE 'r' +#define OPT_WSIZE 'w' +#define OPT_STAT_TO -2 +#define OPT_CACHE_TO -3 +#define OPT_INIT_TR_TO -4 +#define OPT_MAX_TR_TO -5 +#define OPT_MNT_PORT -6 +#define OPT_MNT_PORT_D -7 +#define OPT_NFS_PORT -8 +#define OPT_NFS_PORT_D -9 +#define OPT_HOLD -10 + +/* Return a string corresponding to the printed rep of DEFAULT_what */ +#define ___D(what) #what +#define __D(what) ___D(what) +#define _D(what) __D(DEFAULT_ ## what) + +static struct argp_option options[] = { + {0,0,0,0,0,1}, + {"soft", OPT_SOFT, "RETRIES", OPTION_ARG_OPTIONAL, + "File system requests will eventually fail, after RETRIES times, if" + " specified, otherwise " _D(SOFT_RETRIES)}, + {"hard", OPT_HARD, 0, 0, + "Retry file systems requests until they succeed"}, + + {0,0,0,0,0,2}, + {"read-size", OPT_RSIZE, "BYTES", 0, + "Max packet size for reads (default " _D(READ_SIZE) ")"}, + {"rsize",0,0,OPTION_ALIAS}, + {"write-size", OPT_WSIZE, "BYTES", 0, + "Max packet size for writes (default " _D(WRITE_SIZE)")"}, + {"wsize",0,0,OPTION_ALIAS}, + {0,0,0,0,"Timeouts:",3}, + {"stat-timeout", OPT_STAT_TO, "SEC", 0, + "Timeout for cached stat information (default " _D(STAT_TIMEOUT) ")"}, + {"cache-timeout", OPT_CACHE_TO, "SEC", 0, + "Timeout for cached file data (default " _D(CACHE_TIMEOUT) ")"}, + {"init-transmit-timeout", OPT_INIT_TR_TO,"SEC", 0}, + {"max-transmit-timeout", OPT_MAX_TR_TO, "SEC", 0}, + + {0,0,0,0,"Server specification:",4}, + {"mount-port", OPT_MNT_PORT, "PORT", 0, + "Port for mount server"}, + {"default-mount-port", OPT_MNT_PORT_D,"PORT", 0, + "Port for mount server, if none can be found automatically"}, + + {"nfs-port", OPT_NFS_PORT, "PORT", 0, + "Port for nfs operations"}, + {"default-nfs-port", OPT_NFS_PORT_D,"PORT", 0, + "Port for nfs operations, if none can be found automatically"}, + + {"hold", OPT_HOLD, 0, OPTION_HIDDEN}, /* */ + { 0 } +}; +static char *args_doc = "REMOTE_FS [HOST]"; +static char *doc = "If HOST is not specified, an attempt is made to extract" +" it from REMOTE_FS, using either the `HOST:FS' or `FS@HOST' notations."; + int -main () +main (int argc, char **argv) { mach_port_t bootstrap; static volatile int hold = 0; struct sockaddr_in addr; int ret; + char *remote_fs = 0; + char *host = 0; + + error_t parse_opt (int key, char *arg, struct argp_state *state) + { + switch (key) + { + case OPT_SOFT: + mounted_soft = 1; + if (arg) + soft_retries = atoi (arg); + break; + case OPT_HARD: + mounted_soft = 0; + break; + + case OPT_RSIZE: read_size = atoi (arg); break; + case OPT_WSIZE: write_size = atoi (arg); break; + + case OPT_STAT_TO: stat_timeout = atoi (arg); break; + case OPT_CACHE_TO: cache_timeout = atoi (arg); break; + case OPT_INIT_TR_TO: initial_transmit_timeout = atoi (arg); break; + case OPT_MAX_TR_TO: max_transmit_timeout = atoi (arg); break; + + case OPT_MNT_PORT: + mount_port_override = 1; + /* fall through */ + case OPT_MNT_PORT_D: + mount_port = atoi (arg); + break; + + case OPT_NFS_PORT: + nfs_port_override = 1; + /* fall through */ + case OPT_NFS_PORT_D: + nfs_port = atoi (arg); + break; + + case OPT_HOLD: hold = 1; break; + + case ARGP_KEY_ARG: + if (state->arg_num == 0) + remote_fs = arg; + else if (state->arg_num == 1) + host = arg; + else + return EINVAL; + break; + + case ARGP_KEY_END: + if (! host) + /* Try and extract HOST from REMOTE_FS. */ + { + char *sep = index (remote_fs, ':'); + if (sep) + { + *sep++ = '\0'; + host = remote_fs; + remote_fs = sep; + break; + } + + sep = index (remote_fs, '@'); + if (sep) + { + *sep++ = '\0'; + host = sep; + break; + } + + argp_error (state->argp, "No HOST specified"); + } + break; + + case ARGP_KEY_NO_ARGS: + argp_error (state->argp, "No REMOTE_FS specified"); + + default: + return EINVAL; + } + return 0; + } + struct argp argp = {options, parse_opt, args_doc, doc}; + + argp_parse (&argp, argc, argv, 0, 0); while (hold); @@ -82,7 +236,7 @@ main () hostname = malloc (1000); gethostname (hostname, 1000); - netfs_root_node = mount_root ("/home/gd4", "duality.gnu.ai.mit.edu"); + netfs_root_node = mount_root (remote_fs, host); if (!netfs_root_node) exit (1); |