direct-io.hg
changeset 10902:8f452e26224a
[TOOLS] Modify xenstore_client.c to include a new utility, xenstore-chmod.
This utility permits developers and administrators to
manually change the permissions on arbitrary locations in XenStore
from the command line. This is often helpful if you're trying to debug an
application that relies on XenStore and is encountering difficulties
with permissions.
Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil>
This utility permits developers and administrators to
manually change the permissions on arbitrary locations in XenStore
from the command line. This is often helpful if you're trying to debug an
application that relies on XenStore and is encountering difficulties
with permissions.
Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil>
author | kfraser@localhost.localdomain |
---|---|
date | Wed Aug 02 14:58:37 2006 +0100 (2006-08-02) |
parents | 9632ececc8f4 |
children | ee6014279103 |
files | .hgignore tools/xenstore/Makefile tools/xenstore/xenstore_client.c |
line diff
1.1 --- a/.hgignore Wed Aug 02 10:13:30 2006 +0100 1.2 +++ b/.hgignore Wed Aug 02 14:58:37 2006 +0100 1.3 @@ -156,6 +156,7 @@ 1.4 ^tools/xenstat/xentop/xentop$ 1.5 ^tools/xenstore/testsuite/tmp/.*$ 1.6 ^tools/xenstore/xen$ 1.7 +^tools/xenstore/xenstore-chmod$ 1.8 ^tools/xenstore/xenstore-exists$ 1.9 ^tools/xenstore/xenstore-list$ 1.10 ^tools/xenstore/xenstore-read$
2.1 --- a/tools/xenstore/Makefile Wed Aug 02 10:13:30 2006 +0100 2.2 +++ b/tools/xenstore/Makefile Wed Aug 02 14:58:37 2006 +0100 2.3 @@ -26,7 +26,7 @@ TESTDIR = testsuite/tmp 2.4 TESTFLAGS= -DTESTING 2.5 TESTENV = XENSTORED_ROOTDIR=$(TESTDIR) XENSTORED_RUNDIR=$(TESTDIR) 2.6 2.7 -CLIENTS := xenstore-exists xenstore-list xenstore-read xenstore-rm 2.8 +CLIENTS := xenstore-exists xenstore-list xenstore-read xenstore-rm xenstore-chmod 2.9 CLIENTS += xenstore-write 2.10 CLIENTS_OBJS := $(patsubst xenstore-%,xenstore_%.o,$(CLIENTS)) 2.11
3.1 --- a/tools/xenstore/xenstore_client.c Wed Aug 02 10:13:30 2006 +0100 3.2 +++ b/tools/xenstore/xenstore_client.c Wed Aug 02 14:58:37 2006 +0100 3.3 @@ -60,6 +60,8 @@ usage(const char *progname) 3.4 errx(1, "Usage: %s [-h] [-s] [-t] key [...]", progname); 3.5 #elif defined(CLIENT_exists) || defined(CLIENT_list) 3.6 errx(1, "Usage: %s [-h] [-s] key [...]", progname); 3.7 +#elif defined(CLIENT_chmod) 3.8 + errx(1, "Usage: %s [-h] [-s] key <mode [modes...]>", progname); 3.9 #endif 3.10 } 3.11 3.12 @@ -78,10 +80,61 @@ do_rm(char *path, struct xs_handle *xsh, 3.13 } 3.14 #endif 3.15 3.16 +#if defined(CLIENT_chmod) 3.17 +#define PATH_SEP '/' 3.18 +#define MAX_PATH_LEN 256 3.19 + 3.20 +static void 3.21 +do_chmod(char *path, struct xs_permissions *perms, int nperms, int upto, 3.22 + int recurse, struct xs_handle *xsh, xs_transaction_t xth) 3.23 +{ 3.24 + int ret; 3.25 + 3.26 + if (!path[0]) 3.27 + return; 3.28 + 3.29 + ret = xs_set_permissions(xsh, xth, path, perms, nperms); 3.30 + if (!ret) 3.31 + err(1, "Error occurred setting permissions on '%s'", path); 3.32 + 3.33 + if (upto) { 3.34 + /* apply same permissions to all parent entries: */ 3.35 + char *path_sep_ptr = strrchr(path, PATH_SEP); 3.36 + if (!path_sep_ptr) 3.37 + errx(1, "Unable to locate path separator '%c' in '%s'", 3.38 + PATH_SEP, path); 3.39 + 3.40 + *path_sep_ptr = '\0'; /* truncate path */ 3.41 + 3.42 + do_chmod(path, perms, nperms, 1, 0, xsh, xth); 3.43 + 3.44 + *path_sep_ptr = PATH_SEP; 3.45 + } 3.46 + 3.47 + if (recurse) { 3.48 + char buf[MAX_PATH_LEN]; 3.49 + 3.50 + /* apply same permissions to all child entries: */ 3.51 + unsigned int xsval_n; 3.52 + char **xsval = xs_directory(xsh, xth, path, &xsval_n); 3.53 + 3.54 + if (xsval) { 3.55 + int i; 3.56 + for (i = 0; i < xsval_n; i++) { 3.57 + snprintf(buf, MAX_PATH_LEN, "%s/%s", path, xsval[i]); 3.58 + 3.59 + do_chmod(buf, perms, nperms, 0, 1, xsh, xth); 3.60 + } 3.61 + 3.62 + free(xsval); 3.63 + } 3.64 + } 3.65 +} 3.66 +#endif 3.67 3.68 static int 3.69 perform(int optind, int argc, char **argv, struct xs_handle *xsh, 3.70 - xs_transaction_t xth, int prefix, int tidy) 3.71 + xs_transaction_t xth, int prefix, int tidy, int upto, int recurse) 3.72 { 3.73 while (optind < argc) { 3.74 #if defined(CLIENT_read) 3.75 @@ -168,6 +221,41 @@ perform(int optind, int argc, char **arg 3.76 } 3.77 free(list); 3.78 optind++; 3.79 +#elif defined(CLIENT_chmod) 3.80 +#define MAX_PERMS 16 3.81 + struct xs_permissions perms[MAX_PERMS]; 3.82 + int nperms = 0; 3.83 + /* save path pointer: */ 3.84 + char *path = argv[optind++]; 3.85 + for (; argv[optind]; optind++, nperms++) 3.86 + { 3.87 + if (MAX_PERMS <= nperms) 3.88 + errx(1, "Too many permissions specified. " 3.89 + "Maximum per invocation is %d.", MAX_PERMS); 3.90 + 3.91 + perms[nperms].id = atoi(argv[optind]+1); 3.92 + 3.93 + switch (argv[optind][0]) 3.94 + { 3.95 + case 'n': 3.96 + perms[nperms].perms = XS_PERM_NONE; 3.97 + break; 3.98 + case 'r': 3.99 + perms[nperms].perms = XS_PERM_READ; 3.100 + break; 3.101 + case 'w': 3.102 + perms[nperms].perms = XS_PERM_WRITE; 3.103 + break; 3.104 + case 'b': 3.105 + perms[nperms].perms = XS_PERM_READ | XS_PERM_WRITE; 3.106 + break; 3.107 + default: 3.108 + errx(1, "Invalid permission specification: '%c'", 3.109 + argv[optind][0]); 3.110 + } 3.111 + } 3.112 + 3.113 + do_chmod(path, perms, nperms, upto, recurse, xsh, xth); 3.114 #endif 3.115 } 3.116 3.117 @@ -183,6 +271,8 @@ main(int argc, char **argv) 3.118 int ret = 0, socket = 0; 3.119 int prefix = 0; 3.120 int tidy = 0; 3.121 + int upto = 0; 3.122 + int recurse = 0; 3.123 3.124 while (1) { 3.125 int c, index = 0; 3.126 @@ -193,6 +283,9 @@ main(int argc, char **argv) 3.127 {"prefix", 0, 0, 'p'}, 3.128 #elif defined(CLIENT_rm) 3.129 {"tidy", 0, 0, 't'}, 3.130 +#elif defined(CLIENT_chmod) 3.131 + {"upto", 0, 0, 'u'}, 3.132 + {"recurse", 0, 0, 'r'}, 3.133 #endif 3.134 {0, 0, 0, 0} 3.135 }; 3.136 @@ -202,6 +295,8 @@ main(int argc, char **argv) 3.137 "p" 3.138 #elif defined(CLIENT_rm) 3.139 "t" 3.140 +#elif defined(CLIENT_chmod) 3.141 + "ur" 3.142 #endif 3.143 , long_options, &index); 3.144 if (c == -1) 3.145 @@ -222,6 +317,13 @@ main(int argc, char **argv) 3.146 case 't': 3.147 tidy = 1; 3.148 break; 3.149 +#elif defined(CLIENT_chmod) 3.150 + case 'u': 3.151 + upto = 1; 3.152 + break; 3.153 + case 'r': 3.154 + recurse = 1; 3.155 + break; 3.156 #endif 3.157 } 3.158 } 3.159 @@ -246,7 +348,7 @@ main(int argc, char **argv) 3.160 if (xth == XBT_NULL) 3.161 errx(1, "couldn't start transaction"); 3.162 3.163 - ret = perform(optind, argc, argv, xsh, xth, prefix, tidy); 3.164 + ret = perform(optind, argc, argv, xsh, xth, prefix, tidy, upto, recurse); 3.165 3.166 if (!xs_transaction_end(xsh, xth, ret)) { 3.167 if (ret == 0 && errno == EAGAIN) {