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Change the sync example to perform a 'ls -l' on an NFS URL

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1 parent b9813d2 commit 67336940cda5872c898f2e568a052a746fa6e4e6 @sahlberg committed
Showing with 154 additions and 191 deletions.
  1. +154 −191 examples/nfsclient-sync.c
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345 examples/nfsclient-sync.c
@@ -15,24 +15,20 @@
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
+#define _FILE_OFFSET_BITS 64
+#define _GNU_SOURCE
+
/* Example program using the highlevel sync interface
*/
#ifdef WIN32
#include "win32_compat.h"
#else
+#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#endif
-#define SERVER "10.1.1.27"
-#define EXPORT "/VIRTUAL"
-#define NFSFILE "/BOOKS/Classics/Dracula.djvu.truncated"
-#define NFSFILER "/BOOKS/Classics/Dracula.djvu.renamed"
-#define NFSFILEW "/BOOKS/Classics/foo"
-#define NFSDIR "/BOOKS/Classics/"
-
-#define _GNU_SOURCE
#if defined(WIN32)
#pragma comment(lib, "ws2_32.lib")
@@ -45,11 +41,14 @@ WSADATA wsaData;
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
+#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "libnfs-zdr.h"
#include "libnfs.h"
+#include <rpc/rpc.h> /* for authunix_create() */
+#include <popt.h>
#include "libnfs-raw.h"
#include "libnfs-raw-mount.h"
@@ -61,27 +60,33 @@ struct client {
};
-void PrintServerList()
-{
- struct nfs_server_list *srvrs;
- struct nfs_server_list *srv;
-
- srvrs = nfs_find_local_servers();
-
- for (srv=srvrs; srv; srv = srv->next)
- {
- printf("Found nfs server: %s\n", srv->addr);
+char buf[3*1024*1024+337];
- }
- free_nfs_srvr_list(srvrs);
+void print_usage(void)
+{
+ fprintf(stderr, "Usage: nfsclient-sync [-?|--help] [--usage] <url>\n");
}
-char buf[3*1024*1024+337];
+void print_help(void)
+{
+ fprintf(stderr, "Usage: nfsclient-sync [OPTION...] <url>\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Help options:\n");
+ fprintf(stderr, " -?, --help Show this help message\n");
+ fprintf(stderr, " --usage Display brief usage message\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "NFS URL format : nfs://<server>/<export-path>\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "<host> is either of:\n");
+ fprintf(stderr, " \"hostname\" nfs.example\n");
+ fprintf(stderr, " \"ipv4-address\" 10.1.1.27\n");
+ fprintf(stderr, " \"ipv6-address\" [fce0::1]\n");
+}
-int main(int argc _U_, char *argv[] _U_)
+int main(int argc, char *argv[])
{
- struct nfs_context *nfs;
- int i, ret;
+ struct nfs_context *nfs = NULL;
+ int i, ret, res;
uint64_t offset;
struct client client;
struct stat st;
@@ -90,6 +95,18 @@ int main(int argc _U_, char *argv[] _U_)
struct nfsdirent *nfsdirent;
struct statvfs svfs;
exports export, tmp;
+ int show_help = 0, show_usage = 0;
+ poptContext pc;
+ const char **extra_argv;
+ int extra_argc = 0;
+ const char *url = NULL;
+ char *server = NULL, *path = NULL, *strp;
+
+ struct poptOption popt_options[] = {
+ { "help", '?', POPT_ARG_NONE, &show_help, 0, "Show this help message", NULL },
+ { "usage", 0, POPT_ARG_NONE, &show_usage, 0, "Display brief usage message", NULL },
+ POPT_TABLEEND
+ };
#if defined(WIN32)
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
@@ -98,212 +115,158 @@ int main(int argc _U_, char *argv[] _U_)
}
#endif
- client.server = SERVER;
- client.export = EXPORT;
- client.is_finished = 0;
-
- PrintServerList();
-
- export = mount_getexports(SERVER);
- if (export != NULL) {
- printf("exports on server %s\n", SERVER);
- tmp = export;
- while (tmp != NULL) {
- printf("Export: %s\n", tmp->ex_dir);
- tmp = tmp->ex_next;
- }
-
- mount_free_export_list(export);
- } else {
- printf("no exports on server %s\n", SERVER);
- }
-
- nfs = nfs_init_context();
- if (nfs == NULL) {
- printf("failed to init context\n");
+ pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_POSIXMEHARDER);
+ if ((res = poptGetNextOpt(pc)) < -1) {
+ fprintf(stderr, "Failed to parse option : %s %s\n",
+ poptBadOption(pc, 0), poptStrerror(res));
exit(10);
}
-
- ret = nfs_mount(nfs, client.server, client.export);
- if (ret != 0) {
- printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
- exit(10);
+ extra_argv = poptGetArgs(pc);
+ if (extra_argv) {
+ url = *extra_argv;
+ extra_argv++;
+ while (extra_argv[extra_argc]) {
+ extra_argc++;
+ }
}
- printf("mounted share successfully %s\n", nfs_get_error(nfs));
-
+ poptFreeContext(pc);
- ret = nfs_stat(nfs, NFSFILE, &st);
- if (ret != 0) {
- printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ if (show_help != 0) {
+ print_help();
+ exit(0);
}
- printf("Mode %04o\n", st.st_mode);
- printf("Size %d\n", (int)st.st_size);
- printf("Inode %04o\n", (int)st.st_ino);
- ret = nfs_open(nfs, NFSFILE, O_RDONLY, &nfsfh);
- if (ret != 0) {
- printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ if (show_usage != 0) {
+ print_usage();
+ exit(0);
}
-#if 0
- ret = nfs_read(nfs, nfsfh, 16, buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
- }
- printf("read %d bytes\n", ret);
- for (i=0;i<16;i++) {
- printf("%02x ", buf[i]&0xff);
- }
- printf("\n");
-#endif
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ if (url == NULL) {
+ fprintf(stderr, "No URL specified.\n");
+ print_usage();
+ exit(0);
}
- printf("read %d bytes\n", ret);
- for (i=0;i<16;i++) {
- printf("%02x ", buf[i]&0xff);
+
+ if (strncmp(url, "nfs://", 6)) {
+ fprintf(stderr, "Invalid URL specified.\n");
+ print_usage();
+ exit(0);
}
- printf("\n");
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+
+ server = strdup(url + 6);
+ if (server == NULL) {
+ fprintf(stderr, "Failed to strdup server string\n");
exit(10);
}
- printf("read %d bytes\n", ret);
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+ if (server[0] == '/' || server[0] == '\0') {
+ fprintf(stderr, "Invalid server string.\n");
+ free(server);
exit(10);
}
- printf("read %d bytes\n", ret);
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ strp = strchr(server, '/');
+ if (strp == NULL) {
+ fprintf(stderr, "Invalid URL specified.\n");
+ print_usage();
+ free(server);
+ exit(0);
}
- printf("read %d bytes\n", ret);
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+ path = strdup(strp);
+ if (path == NULL) {
+ fprintf(stderr, "Failed to strdup server string\n");
+ free(server);
exit(10);
}
- printf("read %d bytes\n", ret);
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Failed to pread(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+ if (path[0] != '/') {
+ fprintf(stderr, "Invalid path.\n");
+ free(server);
+ free(path);
exit(10);
}
- printf("read %d bytes\n", ret);
+ *strp = 0;
+
+ client.server = server;
+ client.export = path;
+ client.is_finished = 0;
- ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_CUR, &offset);
- if (ret < 0) {
- printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
- }
- printf("File position is %d\n", (int)offset);
- printf("seek to end of file\n");
- ret = (int)nfs_lseek(nfs, nfsfh, 0, SEEK_END, &offset);
- if (ret < 0) {
- printf("Failed to lseek(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ nfs = nfs_init_context();
+ if (nfs == NULL) {
+ printf("failed to init context\n");
+ goto finished;
}
- printf("File position is %d\n", (int)offset);
- ret = nfs_fstat(nfs, nfsfh, &st);
+ ret = nfs_mount(nfs, client.server, client.export);
if (ret != 0) {
- printf("Failed to stat(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+ printf("Failed to mount nfs share : %s\n", nfs_get_error(nfs));
+ goto finished;
}
- printf("Mode %04o\n", st.st_mode);
- printf("Size %d\n", (int)st.st_size);
- printf("Inode %04o\n", (int)st.st_ino);
- ret = nfs_close(nfs, nfsfh);
- if (ret < 0) {
- printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
- }
-
- ret = nfs_opendir(nfs, NFSDIR, &nfsdir);
+ ret = nfs_opendir(nfs, "/", &nfsdir);
if (ret != 0) {
- printf("Failed to open(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+ printf("Failed to opendir(\"/\")\n", nfs_get_error(nfs));
exit(10);
}
while((nfsdirent = nfs_readdir(nfs, nfsdir)) != NULL) {
- char filename[1024];
- printf("Inode:%d Name:%s ", (int)nfsdirent->inode, nfsdirent->name);
- sprintf(filename, "%s/%s", NFSDIR, nfsdirent->name);
- ret = nfs_open(nfs, filename, O_RDONLY, &nfsfh);
- if (ret != 0) {
- printf("Failed to open(%s) %s\n", filename, nfs_get_error(nfs));
- exit(10);
+ char path[1024];
+
+ if (!strcmp(nfsdirent->name, ".") || !strcmp(nfsdirent->name, "..")) {
+ continue;
}
- ret = nfs_read(nfs, nfsfh, sizeof(buf), buf);
- if (ret < 0) {
- printf("Error reading file\n");
+
+ snprintf(path, 1024, "%s/%s", "/", nfsdirent->name);
+ ret = nfs_stat(nfs, path, &st);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to stat(%s) %s\n", path, nfs_get_error(nfs));
+ continue;
}
- printf("Read %d bytes\n", ret);
- ret = nfs_close(nfs, nfsfh);
- if (ret < 0) {
- printf("Failed to close(%s): %s\n", NFSFILE, nfs_get_error(nfs));
- exit(10);
+
+ switch (st.st_mode & S_IFMT) {
+ case S_IFLNK:
+ case S_IFREG:
+ printf("-");
+ break;
+ case S_IFDIR:
+ printf("d");
+ break;
+ case S_IFCHR:
+ printf("c");
+ break;
+ case S_IFBLK:
+ printf("b");
+ break;
}
+ printf("%c%c%c",
+ "-r"[!!(st.st_mode & S_IRUSR)],
+ "-w"[!!(st.st_mode & S_IWUSR)],
+ "-x"[!!(st.st_mode & S_IXUSR)]
+ );
+ printf("%c%c%c",
+ "-r"[!!(st.st_mode & S_IRGRP)],
+ "-w"[!!(st.st_mode & S_IWGRP)],
+ "-x"[!!(st.st_mode & S_IXGRP)]
+ );
+ printf("%c%c%c",
+ "-r"[!!(st.st_mode & S_IROTH)],
+ "-w"[!!(st.st_mode & S_IWOTH)],
+ "-x"[!!(st.st_mode & S_IXOTH)]
+ );
+ printf(" %2d", st.st_nlink);
+ printf(" %5d", st.st_uid);
+ printf(" %5d", st.st_gid);
+ printf(" %12" PRId64, st.st_size);
+
+ printf(" %s\n", nfsdirent->name);
}
nfs_closedir(nfs, nfsdir);
- ret = nfs_open(nfs, NFSFILEW, O_WRONLY, &nfsfh);
- if (ret != 0) {
- printf("Failed to open(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
- exit(10);
- }
- ret = nfs_pwrite(nfs, nfsfh, 0, 16, buf);
- if (ret < 0) {
- printf("Failed to pwrite(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
- exit(10);
- }
- ret = nfs_fsync(nfs, nfsfh);
- if (ret < 0) {
- printf("Failed to fsync(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
- exit(10);
- }
- ret = nfs_close(nfs, nfsfh);
- if (ret < 0) {
- printf("Failed to close(%s) %s\n", NFSFILEW, nfs_get_error(nfs));
- exit(10);
- }
-
-
- ret = nfs_statvfs(nfs, NFSDIR, &svfs);
- if (ret < 0) {
- printf("Failed to statvfs(%s) %s\n", NFSDIR, nfs_get_error(nfs));
- exit(10);
- }
- printf("files %d/%d/%d\n", (int)svfs.f_files, (int)svfs.f_ffree, (int)svfs.f_favail);
-
-
- ret = nfs_access(nfs, NFSFILE, R_OK);
- if (ret != 0) {
- printf("Failed to access(%s) %s\n", NFSFILE, nfs_get_error(nfs));
- }
-
- /* become root */
- nfs_set_auth(nfs, authunix_create("Ronnies-Laptop", 0, 0, 0, NULL));
-
- ret = nfs_link(nfs, NFSFILE, NFSFILER);
- if (ret != 0) {
- printf("Failed to link(%s) %s\n", NFSFILE, nfs_get_error(nfs));
+finished:
+ free(server);
+ free(path);
+ if (nfs != NULL) {
+ nfs_destroy_context(nfs);
}
-
-
- nfs_destroy_context(nfs);
printf("nfsclient finished\n");
return 0;
}

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