From d5c057626515de8c502ce4f5ce290e426a499be8 Mon Sep 17 00:00:00 2001 From: Marco van Wieringen Date: Wed, 12 Aug 2009 22:37:21 +0200 Subject: [PATCH] Move global variables into jcr private xattr data structure so we can have parallel saves of xattr on solaris. --- bacula/src/filed/xattr.c | 60 +++++++++++++++++++--------------------- bacula/src/filed/xattr.h | 17 ++++++++++++ bacula/src/jcr.h | 1 + 3 files changed, 46 insertions(+), 32 deletions(-) diff --git a/bacula/src/filed/xattr.c b/bacula/src/filed/xattr.c index c444d62093..d3f97e241f 100644 --- a/bacula/src/filed/xattr.c +++ b/bacula/src/filed/xattr.c @@ -647,27 +647,16 @@ static int os_default_xattr_streams[2] = { STREAM_XATTR_SOLARIS, STREAM_XATTR_SO static int os_default_xattr_streams[1] = { STREAM_XATTR_SOLARIS }; #endif /* defined(HAVE_SYS_NVPAIR_H) && defined(_PC_SATTR_ENABLED) */ -/* - * This is the count of xattrs saved on a certain file, it gets reset - * on each new file processed and is used to see if we need to send - * the hidden xattr dir data. We only send that data when we encounter - * an other xattr on the file. - */ -static int nr_xattr_saved = 0; -static char toplevel_hidden_dir_xattr_data[MAXSTRING]; -static int toplevel_hidden_dir_xattr_data_len; - /* * This code creates a temporary cache with entries for each xattr which has * a link count > 1 (which indicates it has one or more hard linked counterpart(s)) */ -static alist *xattr_link_cache = NULL; - -static xattr_link_cache_entry_t *find_xattr_link_cache_entry(ino_t inum) +static xattr_link_cache_entry_t *find_xattr_link_cache_entry(JCR *jcr, ino_t inum) { xattr_link_cache_entry_t *ptr; + xattr_private_data_t *xpd = (xattr_private_data_t *)jcr->xattr_private_data; - foreach_alist(ptr, xattr_link_cache) { + foreach_alist(ptr, xpd->xattr_link_cache) { if (ptr && ptr->inum == inum) { return ptr; } @@ -675,15 +664,16 @@ static xattr_link_cache_entry_t *find_xattr_link_cache_entry(ino_t inum) return NULL; } -static void add_xattr_link_cache_entry(ino_t inum, char *target) +static void add_xattr_link_cache_entry(JCR *jcr, ino_t inum, char *target) { xattr_link_cache_entry_t *ptr; + xattr_private_data_t *xpd = (xattr_private_data_t *)jcr->xattr_private_data; ptr = (xattr_link_cache_entry_t *)malloc(sizeof(xattr_link_cache_entry_t)); memset((caddr_t)ptr, 0, sizeof(xattr_link_cache_entry_t)); ptr->inum = inum; bstrncpy(ptr->target, target, sizeof(ptr->target)); - xattr_link_cache->append(ptr); + xpd->xattr_link_cache->append(ptr); } #if defined(HAVE_SYS_NVPAIR_H) && defined(_PC_SATTR_ENABLED) @@ -911,7 +901,7 @@ static bxattr_exit_code solaris_save_xattrs(JCR *jcr, const char *xattr_namespac * actual_xattr_data is the content of the xattr file. */ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_namespace, - const char *attrname, bool toplevel_hidden_dir, int stream) + const char *attrname, bool toplevel_hidden_dir, int stream) { int cnt; int attrfd = -1; @@ -922,6 +912,7 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n char *acl_text = NULL; char attribs[MAXSTRING]; char buffer[BUFSIZ]; + xattr_private_data_t *xpd = (xattr_private_data_t *)jcr->xattr_private_data; bxattr_exit_code retval = bxattr_exit_error; berrno be; @@ -984,11 +975,11 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n * Encode the stat struct into an ASCII representation and jump out of the function. */ encode_stat(attribs, &st, 0, stream); - toplevel_hidden_dir_xattr_data_len = bsnprintf(toplevel_hidden_dir_xattr_data, - sizeof(toplevel_hidden_dir_xattr_data), - "%s%c%s%c%s%c", - target_attrname, 0, attribs, 0, - (acl_text) ? acl_text : "", 0); + xpd->toplevel_hidden_dir_xattr_data_len = bsnprintf(xpd->toplevel_hidden_dir_xattr_data, + sizeof(xpd->toplevel_hidden_dir_xattr_data), + "%s%c%s%c%s%c", + target_attrname, 0, attribs, 0, + (acl_text) ? acl_text : "", 0); goto bail_out; } else { /* @@ -1009,7 +1000,7 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n /* * See if the cache already knows this inode number. */ - if ((xlce = find_xattr_link_cache_entry(st.st_ino)) != NULL) { + if ((xlce = find_xattr_link_cache_entry(jcr, st.st_ino)) != NULL) { /* * Generate a xattr encoding with the reference to the target in there. */ @@ -1031,7 +1022,7 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n * Store this hard linked file in the cache. * Store the name relative to the top level xattr space. */ - add_xattr_link_cache_entry(st.st_ino, target_attrname + 1); + add_xattr_link_cache_entry(jcr, st.st_ino, target_attrname + 1); } /* @@ -1109,9 +1100,9 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n /* * See if this is the first real xattr being saved. If it is save the toplevel_hidden_dir attributes first. */ - if (nr_xattr_saved == 0) { - pm_memcpy(jcr->xattr_data, toplevel_hidden_dir_xattr_data, toplevel_hidden_dir_xattr_data_len); - jcr->xattr_data_len = toplevel_hidden_dir_xattr_data_len; + if (xpd->nr_xattr_saved == 0) { + pm_memcpy(jcr->xattr_data, xpd->toplevel_hidden_dir_xattr_data, xpd->toplevel_hidden_dir_xattr_data_len); + jcr->xattr_data_len = xpd->toplevel_hidden_dir_xattr_data_len; retval = send_xattr_stream(jcr, STREAM_XATTR_SOLARIS); } @@ -1155,7 +1146,7 @@ static bxattr_exit_code solaris_save_xattr(JCR *jcr, int fd, const char *xattr_n if (retval) { retval = send_xattr_stream(jcr, stream); - nr_xattr_saved++; + xpd->nr_xattr_saved++; } /* @@ -1775,6 +1766,7 @@ bail_out: static bxattr_exit_code solaris_build_xattr_streams(JCR *jcr, FF_PKT *ff_pkt) { char cwd[PATH_MAX]; + xattr_private_data_t *xpd; bxattr_exit_code retval = bxattr_exit_ok; /* @@ -1782,18 +1774,22 @@ static bxattr_exit_code solaris_build_xattr_streams(JCR *jcr, FF_PKT *ff_pkt) * If not just pretend things went ok. */ if (pathconf(jcr->last_fname, _PC_XATTR_EXISTS) > 0) { - nr_xattr_saved = 0; + xpd = (xattr_private_data_t *)malloc(sizeof(xattr_private_data_t)); + memset((caddr_t)xpd, 0, sizeof(xattr_private_data_t)); + xpd->xattr_link_cache = New(alist(10, not_owned_by_alist)); + jcr->xattr_private_data = (void *)xpd; /* * As we change the cwd in the save function save the current cwd * for restore after return from the solaris_save_xattrs function. */ - xattr_link_cache = New(alist(10, not_owned_by_alist)); getcwd(cwd, sizeof(cwd)); retval = solaris_save_xattrs(jcr, NULL, NULL); chdir(cwd); - delete xattr_link_cache; - xattr_link_cache = NULL; + delete xpd->xattr_link_cache; + xpd->xattr_link_cache = NULL; + free(xpd); + jcr->xattr_private_data = NULL; } return retval; } diff --git a/bacula/src/filed/xattr.h b/bacula/src/filed/xattr.h index 16056165e7..891c6fb275 100644 --- a/bacula/src/filed/xattr.h +++ b/bacula/src/filed/xattr.h @@ -54,6 +54,23 @@ struct xattr_link_cache_entry_t { char target[PATH_MAX]; }; +/* + * Private data structure for threadsafe save of xattrs. + * For now its mostly for storing the solaris specific private data. + */ +struct xattr_private_data_t { + /* + * This is the count of xattrs saved on a certain file, it gets reset + * on each new file processed and is used to see if we need to send + * the hidden xattr dir data. We only send that data when we encounter + * an other xattr on the file. + */ + int nr_xattr_saved; + char toplevel_hidden_dir_xattr_data[MAXSTRING]; + int toplevel_hidden_dir_xattr_data_len; + alist *xattr_link_cache; +}; + /* * Maximum size of the XATTR stream this prevents us from blowing up the filed. */ diff --git a/bacula/src/jcr.h b/bacula/src/jcr.h index f01e61e2b2..eebd37a1cf 100644 --- a/bacula/src/jcr.h +++ b/bacula/src/jcr.h @@ -350,6 +350,7 @@ public: POOLMEM *acl_data; /* data with ACLs for backup/restore */ uint32_t acl_data_len; /* length of acl data buffer */ uint32_t total_acl_errors; /* numbers of errors encountered for acl backup/restore */ + void *xattr_private_data; /* private data for xattr saving */ POOLMEM *xattr_data; /* data with Extended Attributes for backup/restore */ uint32_t xattr_data_len; /* length of xattr_data buffer */ uint32_t total_xattr_errors; /* numbers of errors encountered for xattr backup/restore */ -- 2.39.5