Accepting request 231322 from home:oertel:branches:Base:System
- add patch to fix fuser -M option active all the time (bnc#874983) psmisc-git-3638cc55b4d08851faba46635d737b24d016665b.patch OBS-URL: https://build.opensuse.org/request/show/231322 OBS-URL: https://build.opensuse.org/package/show/Base:System/psmisc?expand=0&rev=72
This commit is contained in:
Git OBS Bridge
parent
6b0f2f771e
commit
ff0f3a6d0d
@ -1,861 +0,0 @@
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ChangeLog | 6 ++
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configure.ac | 11 ++++
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src/fuser.c | 182 +++++++++++++++------------------------------------------
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src/fuser.h | 4 +-
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src/lists.h | 132 +++++++++++++++++++++++++++++++++++++++--
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src/timeout.c | 163 ++++++++++++++++++++++++++++++++++++++++++---------
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src/timeout.h | 13 ++++-
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7 files changed, 340 insertions(+), 171 deletions(-)
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diff --git ChangeLog ChangeLog
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index 4e3f348..d5cb9ec 100644
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--- ChangeLog
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+++ ChangeLog
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@@ -1,3 +1,9 @@
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+ * Make usage of linked lists of devices found in
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+ /proc/self/mountinfo optional
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+ * Make timeout() in timeout.c work with shared mmap to
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+ reduce the load due write/read the stat buffers
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+ * Add list_sort() to lists.h to be able to sort lists
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+
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Changes in 22.21
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================
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* Missing comma in fuser(1) added Debian #702391
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diff --git configure.ac configure.ac
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index 9df639d..cb03ba9 100644
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--- configure.ac
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+++ configure.ac
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@@ -42,6 +42,17 @@ if test "$enable_timeout_stat" = "static"; then
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fi
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AM_CONDITIONAL([WANT_TIMEOUT_STAT], [test "$enable_timeout_stat" = "static"])
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+# Use string search for network based file systems but only if the system
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+# has /proc/self/mountinfo
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+AC_SUBST([WITH_MOUNTINFO_LIST])
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+AC_ARG_ENABLE([mountinfo_list],
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+ [AS_HELP_STRING([--enable-mountinfo-list], [Use the list in /proc/self/mountinfo to replace stat(2) syscall on network file systems shares])],
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+ [enable_mountinfo_list="yes"],
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+ [enable_mountinfo_list="no"])
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+if test "$enable_mountinfo_list" = "yes" -a -e /proc/self/mountinfo ; then
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+ AC_DEFINE([WITH_MOUNTINFO_LIST], [1], [Use list in /proc/self/mountinfo to replace stat calls])
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+fi
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+
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# Enable hardened compile and link flags
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AC_ARG_ENABLE([harden_flags],
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[AS_HELP_STRING([--disable-harden-flags], [disable hardened compilier and linker flags])],
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diff --git src/fuser.c src/fuser.c
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index 0c773fe..8d04ff5 100644
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--- src/fuser.c
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+++ src/fuser.c
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@@ -58,6 +58,7 @@
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#include "fuser.h"
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#include "signals.h"
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#include "i18n.h"
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+#include "timeout.h"
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//#define DEBUG 1
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@@ -104,25 +105,14 @@ static void debug_match_lists(struct names *names_head,
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struct device_list *dev_head);
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#endif
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-#ifdef _LISTS_H
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+#if defined(WITH_MOUNTINFO_LIST)
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static void clear_mntinfo(void) __attribute__ ((__destructor__));
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static void init_mntinfo(void) __attribute__ ((__constructor__));
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-static dev_t device(const char *path);
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+static int mntstat(const char *path, struct stat *buf);
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#endif
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+static stat_t thestat = stat;
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static char *expandpath(const char *path);
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-#ifdef WITH_TIMEOUT_STAT
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-#if (WITH_TIMEOUT_STAT == 2)
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-#include "timeout.h"
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-#else
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-typedef int (*stat_t) (const char *, struct stat *);
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-static int timeout(stat_t func, const char *path, struct stat *buf,
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- unsigned int seconds);
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-#endif
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-#else
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-#define timeout(func,path,buf,dummy) (func)((path),(buf))
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-#endif /* WITH_TIMEOUT_STAT */
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-
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static void usage(const char *errormsg)
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{
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if (errormsg != NULL)
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@@ -191,10 +181,6 @@ scan_procs(struct names *names_head, struct inode_list *ino_head,
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struct stat *cwd_stat = NULL;
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struct stat *exe_stat = NULL;
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struct stat *root_stat = NULL;
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-#ifdef _LISTS_H
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- char path[256] = "/proc/", *slash;
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- ssize_t len;
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-#endif
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if (topproc_dent->d_name[0] < '0' || topproc_dent->d_name[0] > '9') /* Not a process */
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continue;
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@@ -204,30 +190,12 @@ scan_procs(struct names *names_head, struct inode_list *ino_head,
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continue;
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uid = getpiduid(pid);
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-#ifdef _LISTS_H
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- strcpy(&path[6], topproc_dent->d_name);
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- len = strlen(path);
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- slash = &path[len];
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-
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- *slash = '\0';
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- strcat(slash, "/cwd");
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- cwd_dev = device(path);
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-
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- *slash = '\0';
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- strcat(slash, "/exe");
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- exe_dev = device(path);
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-
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- *slash = '\0';
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- strcat(slash, "/root");
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- root_dev = device(path);
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-#else
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cwd_stat = get_pidstat(pid, "cwd");
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exe_stat = get_pidstat(pid, "exe");
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root_stat = get_pidstat(pid, "root");
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cwd_dev = cwd_stat ? cwd_stat->st_dev : 0;
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exe_dev = exe_stat ? exe_stat->st_dev : 0;
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root_dev = root_stat ? root_stat->st_dev : 0;
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-#endif
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/* Scan the devices */
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for (dev_tmp = dev_head; dev_tmp != NULL;
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@@ -463,7 +431,7 @@ add_special_proc(struct names *name_list, const char ptype, const uid_t uid,
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}
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int parse_file(struct names *this_name, struct inode_list **ino_list,
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- const char opts)
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+ const opt_type opts)
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{
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char *new = expandpath(this_name->filename);
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if (new) {
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@@ -471,8 +439,7 @@ int parse_file(struct names *this_name, struct inode_list **ino_list,
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free(this_name->filename);
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this_name->filename = strdup(new);
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}
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-
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- if (timeout(stat, this_name->filename, &(this_name->st), 5) != 0) {
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+ if (timeout(thestat, this_name->filename, &(this_name->st), 5) != 0) {
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if (errno == ENOENT)
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fprintf(stderr,
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_("Specified filename %s does not exist.\n"),
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@@ -514,7 +481,7 @@ parse_unixsockets(struct names *this_name, struct inode_list **ino_list,
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int
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parse_mounts(struct names *this_name, struct device_list **dev_list,
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- const char opts)
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+ const opt_type opts)
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{
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dev_t match_device;
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@@ -992,6 +959,10 @@ int main(int argc, char *argv[])
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break;
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case 'c':
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opts |= OPT_MOUNTS;
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+#if defined(WITH_MOUNTINFO_LIST)
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+ thestat = mntstat;
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+#endif
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+ read_proc_mounts(&mounts);
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break;
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case 'f':
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/* ignored */
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@@ -1010,6 +981,9 @@ int main(int argc, char *argv[])
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return 0;
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case 'm':
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opts |= OPT_MOUNTS;
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+#if defined(WITH_MOUNTINFO_LIST)
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+ thestat = mntstat;
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+#endif
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read_proc_mounts(&mounts);
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break;
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case 'M':
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@@ -1378,7 +1352,7 @@ static struct stat *get_pidstat(const pid_t pid, const char *filename)
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if ((st = (struct stat *)malloc(sizeof(struct stat))) == NULL)
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return NULL;
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snprintf(pathname, 256, "/proc/%d/%s", pid, filename);
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- if (timeout(stat, pathname, st, 5) != 0) {
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+ if (timeout(thestat, pathname, st, 5) != 0) {
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free(st);
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return NULL;
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}
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@@ -1410,7 +1384,7 @@ check_dir(const pid_t pid, const char *dirname, struct device_list *dev_head,
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snprintf(filepath, MAX_PATHNAME, "/proc/%d/%s/%s",
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pid, dirname, direntry->d_name);
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- if (timeout(stat, filepath, &st, 5) != 0) {
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+ if (timeout(thestat, filepath, &st, 5) != 0) {
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if (errno != ENOENT) {
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fprintf(stderr, _("Cannot stat file %s: %s\n"),
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filepath, strerror(errno));
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@@ -1449,7 +1423,7 @@ check_dir(const pid_t pid, const char *dirname, struct device_list *dev_head,
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if (thedev != ino_tmp->device)
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continue;
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if (!st.st_ino
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- && timeout(stat, filepath, &st, 5) != 0) {
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+ && timeout(thestat, filepath, &st, 5) != 0) {
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fprintf(stderr,
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_("Cannot stat file %s: %s\n"),
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filepath, strerror(errno));
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@@ -1519,7 +1493,7 @@ static uid_t getpiduid(const pid_t pid)
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if (snprintf(pathname, MAX_PATHNAME, "/proc/%d", pid) < 0)
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return 0;
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- if (timeout(stat, pathname, &st, 5) != 0)
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+ if (timeout(thestat, pathname, &st, 5) != 0)
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return 0;
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return st.st_uid;
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}
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@@ -1555,7 +1529,7 @@ void fill_unix_cache(struct unixsocket_list **unixsocket_head)
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path = scanned_path;
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if (*scanned_path == '@')
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scanned_path++;
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- if (timeout(stat, scanned_path, &st, 5) < 0) {
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+ if (timeout(thestat, scanned_path, &st, 5) < 0) {
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free(path);
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continue;
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}
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@@ -1700,7 +1674,7 @@ scan_knfsd(struct names *names_head, struct inode_list *ino_head,
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if ((find_space = strpbrk(line, " \t")) == NULL)
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continue;
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*find_space = '\0';
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- if (timeout(stat, line, &st, 5) != 0) {
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+ if (timeout(thestat, line, &st, 5) != 0) {
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continue;
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}
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/* Scan the devices */
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@@ -1744,7 +1718,7 @@ scan_mounts(struct names *names_head, struct inode_list *ino_head,
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if ((find_space = strchr(find_mountp, ' ')) == NULL)
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continue;
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*find_space = '\0';
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- if (timeout(stat, find_mountp, &st, 5) != 0) {
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+ if (timeout(thestat, find_mountp, &st, 5) != 0) {
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continue;
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}
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/* Scan the devices */
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@@ -1791,7 +1765,7 @@ scan_swaps(struct names *names_head, struct inode_list *ino_head,
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if (*find_space == '\0')
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continue;
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}
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- if (timeout(stat, line, &st, 5) != 0) {
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+ if (timeout(thestat, line, &st, 5) != 0) {
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continue;
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}
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/* Scan the devices */
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@@ -1812,73 +1786,7 @@ scan_swaps(struct names *names_head, struct inode_list *ino_head,
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fclose(fp);
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}
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-/*
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- * Execute stat(2) system call with timeout to avoid deadlock
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- * on network based file systems.
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- */
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-#if defined(WITH_TIMEOUT_STAT) && (WITH_TIMEOUT_STAT == 1)
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-
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-static sigjmp_buf jenv;
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-
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-static void sigalarm(int sig)
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-{
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- if (sig == SIGALRM)
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- siglongjmp(jenv, 1);
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-}
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-
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-static int
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-timeout(stat_t func, const char *path, struct stat *buf, unsigned int seconds)
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-{
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- pid_t pid = 0;
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- int ret = 0, pipes[4];
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- ssize_t len;
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-
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- if (pipe(&pipes[0]) < 0)
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- goto err;
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- switch ((pid = fork())) {
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- case -1:
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- close(pipes[0]);
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- close(pipes[1]);
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- goto err;
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- case 0:
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- (void)signal(SIGALRM, SIG_DFL);
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- close(pipes[0]);
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- if ((ret = func(path, buf)) == 0)
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- do
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- len = write(pipes[1], buf, sizeof(struct stat));
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- while (len < 0 && errno == EINTR);
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- close(pipes[1]);
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- exit(ret);
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- default:
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- close(pipes[1]);
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- if (sigsetjmp(jenv, 1)) {
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- (void)alarm(0);
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- (void)signal(SIGALRM, SIG_DFL);
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- if (waitpid(0, (int *)0, WNOHANG) == 0)
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- kill(pid, SIGKILL);
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- errno = ETIMEDOUT;
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- seconds = 1;
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- goto err;
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- }
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- (void)signal(SIGALRM, sigalarm);
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- (void)alarm(seconds);
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- if (read(pipes[0], buf, sizeof(struct stat)) == 0) {
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- errno = EFAULT;
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- ret = -1;
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- }
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- (void)alarm(0);
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- (void)signal(SIGALRM, SIG_DFL);
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- close(pipes[0]);
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- waitpid(pid, NULL, 0);
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- break;
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- }
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- return ret;
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- err:
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- return -1;
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-}
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-#endif /* WITH_TIMEOUT_STAT */
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-
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-#ifdef _LISTS_H
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+#if defined(WITH_MOUNTINFO_LIST)
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/*
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* Use /proc/self/mountinfo of modern linux system to determine
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* the device numbers of the mount points. Use this to avoid the
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@@ -1967,42 +1875,46 @@ static void init_mntinfo(void)
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/*
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* Determine device of links below /proc/
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*/
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-static dev_t device(const char *path)
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+static int mntstat(const char *path, struct stat *buf)
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{
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char name[PATH_MAX + 1];
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const char *use;
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ssize_t nlen;
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list_t *ptr;
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- if ((nlen = readlink(path, name, PATH_MAX)) < 0) {
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- nlen = strlen(path);
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- use = &path[0];
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- } else {
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- name[nlen] = '\0';
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- use = &name[0];
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- }
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|
||||||
-
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|
||||||
- if (*use != '/') { /* special file (socket, pipe, inotify) */
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|
||||||
- struct stat st;
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||||||
- if (timeout(stat, path, &st, 5) != 0)
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|
||||||
- return (dev_t) - 1;
|
|
||||||
- return st.st_dev;
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||||||
+ if ((use = realpath(path, name)) == NULL || *use != '/')
|
|
||||||
+ {
|
|
||||||
+ if (errno == ENOENT)
|
|
||||||
+ return -1;
|
|
||||||
+ /*
|
|
||||||
+ * Could be a special file (socket, pipe, inotify)
|
|
||||||
+ */
|
|
||||||
+ errno = 0;
|
|
||||||
+ return stat(path, buf);
|
|
||||||
}
|
|
||||||
|
|
||||||
+ nlen = strlen(use);
|
|
||||||
list_for_each(ptr, &mntinfo) {
|
|
||||||
mntinfo_t *mnt = list_entry(ptr, mntinfo_t);
|
|
||||||
if (nlen < mnt->nlen)
|
|
||||||
continue;
|
|
||||||
- if (mnt->nlen == 1) /* root fs is the last entry */
|
|
||||||
- return mnt->dev;
|
|
||||||
+ if (mnt->nlen == 1) { /* root fs is the last entry */
|
|
||||||
+ buf->st_dev = mnt->dev;
|
|
||||||
+ buf->st_ino = 0;
|
|
||||||
+ return 0;
|
|
||||||
+ }
|
|
||||||
if (use[mnt->nlen] != '\0' && use[mnt->nlen] != '/')
|
|
||||||
continue;
|
|
||||||
- if (strncmp(use, mnt->mpoint, mnt->nlen) == 0)
|
|
||||||
- return mnt->dev;
|
|
||||||
+ if (strncmp(use, mnt->mpoint, mnt->nlen) == 0) {
|
|
||||||
+ buf->st_dev = mnt->dev;
|
|
||||||
+ buf->st_ino = 0;
|
|
||||||
+ return 0;
|
|
||||||
+ }
|
|
||||||
}
|
|
||||||
- return (dev_t) - 1;
|
|
||||||
+ errno = ENOENT;
|
|
||||||
+ return -1;
|
|
||||||
}
|
|
||||||
-#endif /* _LISTS_H */
|
|
||||||
+#endif /* WITH_MOUNTINFO_LIST */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Somehow the realpath(3) glibc function call, nevertheless
|
|
||||||
diff --git src/fuser.h src/fuser.h
|
|
||||||
index 242ce19..07488bc 100644
|
|
||||||
--- src/fuser.h
|
|
||||||
+++ src/fuser.h
|
|
||||||
@@ -86,7 +86,7 @@ struct mount_list {
|
|
||||||
struct mount_list *next;
|
|
||||||
};
|
|
||||||
|
|
||||||
-#if defined (__GNUC__) && defined(__OPTIMIZE__) && !defined (__CYGWIN__)
|
|
||||||
+#if defined (__GNUC__) && defined(WITH_MOUNTINFO_LIST)
|
|
||||||
# include "lists.h"
|
|
||||||
typedef struct mntinfo_s {
|
|
||||||
list_t this;
|
|
||||||
@@ -95,6 +95,8 @@ typedef struct mntinfo_s {
|
|
||||||
size_t nlen;
|
|
||||||
char *mpoint;
|
|
||||||
} mntinfo_t;
|
|
||||||
+#else
|
|
||||||
+# undef WITH_MOUNTINFO_LIST
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#define NAMESPACE_FILE 0
|
|
||||||
diff --git src/lists.h src/lists.h
|
|
||||||
index ae8929e..bd371a4 100644
|
|
||||||
--- src/lists.h
|
|
||||||
+++ src/lists.h
|
|
||||||
@@ -1,10 +1,10 @@
|
|
||||||
/*
|
|
||||||
- * lists.h Simple doubly linked list implementation,
|
|
||||||
- * based on <linux/list.h> and <linux/prefetch.h>.
|
|
||||||
+ * lists.h Simple doubly linked list implementation, based on
|
|
||||||
+ * <linux/list.h>, <linux/prefetch.h>, and lib/list_sort.c
|
|
||||||
*
|
|
||||||
- * Version: 0.1 01-Feb-2011 Fink
|
|
||||||
+ * Version: 0.2 11-Dec-2012 Fink
|
|
||||||
*
|
|
||||||
- * Copyright 2011 Werner Fink, 2005 SUSE LINUX Products GmbH, Germany.
|
|
||||||
+ * Copyright 2011,2012 Werner Fink, 2005,2012 SUSE LINUX Products GmbH, Germany.
|
|
||||||
*
|
|
||||||
* This program is free software; you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License as published by
|
|
||||||
@@ -246,4 +246,128 @@ static inline void move_tail(list_t *restrict entry, list_t *restrict head)
|
|
||||||
#define np_list_for_each_prev(pos, head) \
|
|
||||||
for (pos = (head)->prev; pos != (head); pos = pos->prev)
|
|
||||||
|
|
||||||
+#define MAX_LIST_LENGTH_BITS 20
|
|
||||||
+
|
|
||||||
+/*
|
|
||||||
+ * Returns a list organized in an intermediate format suited
|
|
||||||
+ * to chaining of merge() calls: null-terminated, no reserved or
|
|
||||||
+ * sentinel head node, "prev" links not maintained.
|
|
||||||
+ */
|
|
||||||
+static inline list_t *merge(int (*cmp)(list_t *a, list_t *b), list_t *a, list_t *b)
|
|
||||||
+{
|
|
||||||
+ list_t head, *tail = &head;
|
|
||||||
+ while (a && b) {
|
|
||||||
+ /* if equal, take 'a' -- important for sort stability */
|
|
||||||
+ if ((*cmp)(a, b) <= 0) {
|
|
||||||
+ tail->next = a;
|
|
||||||
+ a = a->next;
|
|
||||||
+ } else {
|
|
||||||
+ tail->next = b;
|
|
||||||
+ b = b->next;
|
|
||||||
+ }
|
|
||||||
+ tail = tail->next;
|
|
||||||
+ }
|
|
||||||
+ tail->next = a ? a : b;
|
|
||||||
+ return head.next;
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+/*
|
|
||||||
+ * Combine final list merge with restoration of standard doubly-linked
|
|
||||||
+ * list structure. This approach duplicates code from merge(), but
|
|
||||||
+ * runs faster than the tidier alternatives of either a separate final
|
|
||||||
+ * prev-link restoration pass, or maintaining the prev links
|
|
||||||
+ * throughout.
|
|
||||||
+ */
|
|
||||||
+static inline void merge_and_restore_back_links(int (*cmp)(list_t *a, list_t *b), list_t *head, list_t *a, list_t *b)
|
|
||||||
+{
|
|
||||||
+ list_t *tail = head;
|
|
||||||
+
|
|
||||||
+ while (a && b) {
|
|
||||||
+ /* if equal, take 'a' -- important for sort stability */
|
|
||||||
+ if ((*cmp)(a, b) <= 0) {
|
|
||||||
+ tail->next = a;
|
|
||||||
+ a->prev = tail;
|
|
||||||
+ a = a->next;
|
|
||||||
+ } else {
|
|
||||||
+ tail->next = b;
|
|
||||||
+ b->prev = tail;
|
|
||||||
+ b = b->next;
|
|
||||||
+ }
|
|
||||||
+ tail = tail->next;
|
|
||||||
+ }
|
|
||||||
+ tail->next = a ? a : b;
|
|
||||||
+
|
|
||||||
+ do {
|
|
||||||
+ /*
|
|
||||||
+ * In worst cases this loop may run many iterations.
|
|
||||||
+ * Continue callbacks to the client even though no
|
|
||||||
+ * element comparison is needed, so the client's cmp()
|
|
||||||
+ * routine can invoke cond_resched() periodically.
|
|
||||||
+ */
|
|
||||||
+ (*cmp)(tail->next, tail->next);
|
|
||||||
+
|
|
||||||
+ tail->next->prev = tail;
|
|
||||||
+ tail = tail->next;
|
|
||||||
+ } while (tail->next);
|
|
||||||
+
|
|
||||||
+ tail->next = head;
|
|
||||||
+ head->prev = tail;
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+
|
|
||||||
+/**
|
|
||||||
+ * list_sort - sort a list
|
|
||||||
+ * @head: the list to sort
|
|
||||||
+ * @cmp: the elements comparison function
|
|
||||||
+ *
|
|
||||||
+ * This function implements "merge sort", which has O(nlog(n))
|
|
||||||
+ * complexity.
|
|
||||||
+ *
|
|
||||||
+ * The comparison function @cmp must return a negative value if @a
|
|
||||||
+ * should sort before @b, and a positive value if @a should sort after
|
|
||||||
+ * @b. If @a and @b are equivalent, and their original relative
|
|
||||||
+ * ordering is to be preserved, @cmp must return 0.
|
|
||||||
+ */
|
|
||||||
+static inline void list_sort(list_t *head, int (*cmp)(list_t *a, list_t *b))
|
|
||||||
+{
|
|
||||||
+ list_t *part[MAX_LIST_LENGTH_BITS+1]; /* sorted partial lists
|
|
||||||
+ -- last slot is a sentinel */
|
|
||||||
+ size_t lev; /* index into part[] */
|
|
||||||
+ size_t max_lev = 0;
|
|
||||||
+ list_t *list;
|
|
||||||
+
|
|
||||||
+ if (list_empty(head))
|
|
||||||
+ return;
|
|
||||||
+
|
|
||||||
+ memset(part, 0, sizeof(part));
|
|
||||||
+
|
|
||||||
+ head->prev->next = NULL;
|
|
||||||
+ list = head->next;
|
|
||||||
+
|
|
||||||
+ while (list) {
|
|
||||||
+ list_t *cur = list;
|
|
||||||
+ list = list->next;
|
|
||||||
+ cur->next = NULL;
|
|
||||||
+
|
|
||||||
+ for (lev = 0; part[lev]; lev++) {
|
|
||||||
+ cur = merge(cmp, part[lev], cur);
|
|
||||||
+ part[lev] = NULL;
|
|
||||||
+ }
|
|
||||||
+ if (lev > max_lev) {
|
|
||||||
+ /* list passed to list_sort() too long for efficiency */
|
|
||||||
+ if (lev >= MAX_LIST_LENGTH_BITS)
|
|
||||||
+ lev--;
|
|
||||||
+ max_lev = lev;
|
|
||||||
+ }
|
|
||||||
+ part[lev] = cur;
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ for (lev = 0; lev < max_lev; lev++) {
|
|
||||||
+ if (part[lev])
|
|
||||||
+ list = merge(cmp, part[lev], list);
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ merge_and_restore_back_links(cmp, head, part[max_lev], list);
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
#endif /* _LISTS_H */
|
|
||||||
diff --git src/timeout.c src/timeout.c
|
|
||||||
index 1fe0354..ca4a7cd 100644
|
|
||||||
--- src/timeout.c
|
|
||||||
+++ src/timeout.c
|
|
||||||
@@ -2,9 +2,9 @@
|
|
||||||
* timout.c Advanced timeout handling for file system calls
|
|
||||||
* to avoid deadlocks on remote file shares.
|
|
||||||
*
|
|
||||||
- * Version: 0.1 07-Sep-2011 Fink
|
|
||||||
+ * Version: 0.2 11-Dec-2012 Fink
|
|
||||||
*
|
|
||||||
- * Copyright 2011 Werner Fink, 2011 SUSE LINUX Products GmbH, Germany.
|
|
||||||
+ * Copyright 2011,2012 Werner Fink, 2011,2012 SUSE LINUX Products GmbH, Germany.
|
|
||||||
*
|
|
||||||
* This program is free software; you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License as published by
|
|
||||||
@@ -18,26 +18,29 @@
|
|
||||||
# define _GNU_SOURCE
|
|
||||||
#endif
|
|
||||||
|
|
||||||
-#ifndef USE_SOCKETPAIR
|
|
||||||
-# define USE_SOCKETPAIR 1
|
|
||||||
-#endif
|
|
||||||
-
|
|
||||||
#ifdef _FEATURES_H
|
|
||||||
# error Include local config.h before any system header file
|
|
||||||
#endif
|
|
||||||
-#include "config.h" /* For _FILE_OFFSET_BITS */
|
|
||||||
+#include "config.h"
|
|
||||||
+
|
|
||||||
+#ifndef WITH_TIMEOUT_STAT
|
|
||||||
+# define WITH_TIMEOUT_STAT 0
|
|
||||||
+#endif
|
|
||||||
+
|
|
||||||
+#ifndef USE_SOCKETPAIR
|
|
||||||
+# define USE_SOCKETPAIR 1
|
|
||||||
+#endif
|
|
||||||
|
|
||||||
#include <errno.h>
|
|
||||||
-#include <pthread.h>
|
|
||||||
#include <setjmp.h>
|
|
||||||
#include <signal.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
+#include <sys/mman.h>
|
|
||||||
#include <sys/time.h>
|
|
||||||
#include <sys/types.h>
|
|
||||||
#include <sys/select.h>
|
|
||||||
#include <sys/stat.h>
|
|
||||||
-
|
|
||||||
#include <unistd.h>
|
|
||||||
#if USE_SOCKETPAIR
|
|
||||||
# include <sys/socket.h>
|
|
||||||
@@ -86,6 +89,15 @@
|
|
||||||
# define strcpy(d,s) __builtin_strcpy((d),(s)) /* Without boundary check please */
|
|
||||||
#endif
|
|
||||||
|
|
||||||
+#if WITH_TIMEOUT_STAT
|
|
||||||
+static sigjmp_buf jenv;
|
|
||||||
+static void sigjump(int sig attribute((unused)))
|
|
||||||
+{
|
|
||||||
+ siglongjmp(jenv, 1);
|
|
||||||
+}
|
|
||||||
+#endif
|
|
||||||
+
|
|
||||||
+#if WITH_TIMEOUT_STAT == 2
|
|
||||||
/*
|
|
||||||
* The structure used for communication between the processes
|
|
||||||
*/
|
|
||||||
@@ -106,7 +118,8 @@ typedef struct _handle {
|
|
||||||
|
|
||||||
static volatile pid_t active;
|
|
||||||
static int pipes[4] = {-1, -1, -1, -1};
|
|
||||||
-static char buf[PATH_MAX + sizeof(handle_t) + 1];
|
|
||||||
+static handle_t *restrict handle;
|
|
||||||
+static const size_t buflen = PATH_MAX+sizeof(handle_t)+1;
|
|
||||||
|
|
||||||
static void sigchild(int sig attribute((unused)))
|
|
||||||
{
|
|
||||||
@@ -122,6 +135,7 @@ static void attribute((constructor)) start(void)
|
|
||||||
{
|
|
||||||
sigset_t sigset, oldset;
|
|
||||||
struct sigaction act;
|
|
||||||
+ char sync[1];
|
|
||||||
ssize_t in;
|
|
||||||
|
|
||||||
if (pipes[1] >= 0) close(pipes[1]);
|
|
||||||
@@ -138,6 +152,12 @@ static void attribute((constructor)) start(void)
|
|
||||||
act.sa_handler = sigchild;
|
|
||||||
sigaction(SIGCHLD, &act, 0);
|
|
||||||
|
|
||||||
+ if (!handle)
|
|
||||||
+ handle = mmap(NULL, buflen, PROT_READ|PROT_WRITE,
|
|
||||||
+ MAP_ANONYMOUS|MAP_SHARED, -1, 0);
|
|
||||||
+ if (handle == MAP_FAILED)
|
|
||||||
+ goto error;
|
|
||||||
+
|
|
||||||
if ((active = fork()) < 0)
|
|
||||||
goto error;
|
|
||||||
|
|
||||||
@@ -164,16 +184,22 @@ static void attribute((constructor)) start(void)
|
|
||||||
pipes[1] = pipes[2] = -1;
|
|
||||||
pipes[0] = pipes[3] = -1;
|
|
||||||
|
|
||||||
- {
|
|
||||||
- handle_t *restrict handle = (void*)&buf[0];
|
|
||||||
-
|
|
||||||
- while ((in = read(STDIN_FILENO, handle, sizeof(buf))) > sizeof(handle_t)) {
|
|
||||||
- if (handle->function(handle->path, &handle->argument) < 0)
|
|
||||||
- handle->errcode = errno;
|
|
||||||
- write(STDOUT_FILENO, &handle->errcode, sizeof(handle->errcode)+sizeof(handle->argument));
|
|
||||||
- memset(handle, 0, sizeof(handle_t));
|
|
||||||
+ while ((in = read(STDIN_FILENO, &sync, sizeof(sync))) != 0) {
|
|
||||||
+ ssize_t out;
|
|
||||||
+ if (in < 0) {
|
|
||||||
+ if (errno == EINTR)
|
|
||||||
+ continue;
|
|
||||||
+ break;
|
|
||||||
}
|
|
||||||
+ if (!handle)
|
|
||||||
+ break;
|
|
||||||
+ if (handle->function(handle->path, &handle->argument) < 0)
|
|
||||||
+ handle->errcode = errno;
|
|
||||||
+ do
|
|
||||||
+ out = write(STDOUT_FILENO, &sync, sizeof(sync));
|
|
||||||
+ while (out < 0 && errno == EINTR);
|
|
||||||
}
|
|
||||||
+
|
|
||||||
sigprocmask(SIG_SETMASK, &oldset, NULL);
|
|
||||||
exit(0);
|
|
||||||
error:
|
|
||||||
@@ -181,6 +207,9 @@ error:
|
|
||||||
if (pipes[1] >= 0) close(pipes[1]);
|
|
||||||
if (pipes[2] >= 0) close(pipes[2]);
|
|
||||||
if (pipes[3] >= 0) close(pipes[3]);
|
|
||||||
+ if (handle && handle != MAP_FAILED)
|
|
||||||
+ munmap(handle, buflen);
|
|
||||||
+ handle = NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void /* attribute((destructor)) */ stop(void)
|
|
||||||
@@ -189,24 +218,24 @@ static void /* attribute((destructor)) */ stop(void)
|
|
||||||
kill(active, SIGKILL);
|
|
||||||
}
|
|
||||||
|
|
||||||
-static sigjmp_buf jenv;
|
|
||||||
-static void sigjump(int sig attribute((unused)))
|
|
||||||
-{
|
|
||||||
- siglongjmp(jenv, 1);
|
|
||||||
-}
|
|
||||||
-
|
|
||||||
/*
|
|
||||||
* External routine
|
|
||||||
+ *
|
|
||||||
+ * Execute stat(2) system call with timeout to avoid deadlock
|
|
||||||
+ * on network based file systems.
|
|
||||||
+ *
|
|
||||||
*/
|
|
||||||
-int timeout(stat_t function, const char *path, struct stat *restrict argument, time_t seconds)
|
|
||||||
+int
|
|
||||||
+timeout(stat_t function, const char *path, struct stat *restrict argument, time_t seconds)
|
|
||||||
{
|
|
||||||
- handle_t *restrict handle = (void*)&buf[0];
|
|
||||||
struct sigaction alrm_act, pipe_act, new_act;
|
|
||||||
sigset_t sigset, oldset;
|
|
||||||
+ char sync[1] = "x";
|
|
||||||
|
|
||||||
if (active <= 0) /* Oops, last one failed therefore clear status and restart */
|
|
||||||
start();
|
|
||||||
-
|
|
||||||
+ if (!handle) /* No shared memory area */
|
|
||||||
+ return function(path, argument);
|
|
||||||
memset(handle, 0, sizeof(handle_t));
|
|
||||||
handle->len = strlen(path) + 1;
|
|
||||||
if (handle->len >= PATH_MAX) {
|
|
||||||
@@ -235,8 +264,8 @@ int timeout(stat_t function, const char *path, struct stat *restrict argument, t
|
|
||||||
sigaction(SIGPIPE, &new_act, &pipe_act);
|
|
||||||
alarm(seconds);
|
|
||||||
|
|
||||||
- write(pipes[1], handle, sizeof(handle_t)+handle->len);
|
|
||||||
- read(pipes[2], &handle->errcode, sizeof(handle->errcode)+sizeof(handle->argument));
|
|
||||||
+ write(pipes[1], &sync, sizeof(sync));
|
|
||||||
+ read(pipes[2], &sync, sizeof(sync));
|
|
||||||
|
|
||||||
alarm(0);
|
|
||||||
sigaction(SIGPIPE, &pipe_act, NULL);
|
|
||||||
@@ -261,6 +290,82 @@ timed:
|
|
||||||
error:
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
+#elif WITH_TIMEOUT_STAT == 1
|
|
||||||
+/*
|
|
||||||
+ * External routine
|
|
||||||
+ *
|
|
||||||
+ * Execute stat(2) system call with timeout to avoid deadlock
|
|
||||||
+ * on network based file systems.
|
|
||||||
+ *
|
|
||||||
+ */
|
|
||||||
+int
|
|
||||||
+timeout(stat_t function, const char *path, struct stat *restrict argument, time_t seconds)
|
|
||||||
+{
|
|
||||||
+ struct sigaction alrm_act, pipe_act, new_act;
|
|
||||||
+ sigset_t sigset, oldset;
|
|
||||||
+ int ret = 0, pipes[4];
|
|
||||||
+ pid_t pid = 0;
|
|
||||||
+ ssize_t len;
|
|
||||||
+
|
|
||||||
+ if (pipe(&pipes[0]) < 0)
|
|
||||||
+ goto error;
|
|
||||||
+ switch ((pid = fork())) {
|
|
||||||
+ case -1:
|
|
||||||
+ close(pipes[0]);
|
|
||||||
+ close(pipes[1]);
|
|
||||||
+ goto error;
|
|
||||||
+ case 0:
|
|
||||||
+ new_act.sa_handler = SIG_DFL;
|
|
||||||
+ sigaction(SIGALRM, &new_act, NULL);
|
|
||||||
+ close(pipes[0]);
|
|
||||||
+ if ((ret = function(path, argument)) == 0)
|
|
||||||
+ do
|
|
||||||
+ len = write(pipes[1], argument, sizeof(struct stat));
|
|
||||||
+ while (len < 0 && errno == EINTR);
|
|
||||||
+ close(pipes[1]);
|
|
||||||
+ exit(ret);
|
|
||||||
+ default:
|
|
||||||
+ close(pipes[1]);
|
|
||||||
+
|
|
||||||
+ sigemptyset(&sigset);
|
|
||||||
+ sigaddset(&sigset, SIGALRM);
|
|
||||||
+ sigaddset(&sigset, SIGPIPE);
|
|
||||||
+ sigprocmask(SIG_UNBLOCK, &sigset, &oldset);
|
|
||||||
+
|
|
||||||
+ memset(&new_act, 0, sizeof(new_act));
|
|
||||||
+ sigemptyset(&new_act.sa_mask);
|
|
||||||
+
|
|
||||||
+ if (sigsetjmp(jenv, 1))
|
|
||||||
+ goto timed;
|
|
||||||
+
|
|
||||||
+ new_act.sa_handler = sigjump;
|
|
||||||
+ sigaction(SIGALRM, &new_act, &alrm_act);
|
|
||||||
+ sigaction(SIGPIPE, &new_act, &pipe_act);
|
|
||||||
+ alarm(seconds);
|
|
||||||
+ if (read(pipes[0], argument, sizeof(struct stat)) == 0) {
|
|
||||||
+ errno = EFAULT;
|
|
||||||
+ ret = -1;
|
|
||||||
+ }
|
|
||||||
+ (void)alarm(0);
|
|
||||||
+ sigaction(SIGPIPE, &pipe_act, NULL);
|
|
||||||
+ sigaction(SIGALRM, &alrm_act, NULL);
|
|
||||||
+
|
|
||||||
+ close(pipes[0]);
|
|
||||||
+ waitpid(pid, NULL, 0);
|
|
||||||
+ break;
|
|
||||||
+ }
|
|
||||||
+ return ret;
|
|
||||||
+timed:
|
|
||||||
+ (void)alarm(0);
|
|
||||||
+ sigaction(SIGPIPE, &pipe_act, NULL);
|
|
||||||
+ sigaction(SIGALRM, &alrm_act, NULL);
|
|
||||||
+ if (waitpid(0, NULL, WNOHANG) == 0)
|
|
||||||
+ kill(pid, SIGKILL);
|
|
||||||
+ errno = ETIMEDOUT;
|
|
||||||
+error:
|
|
||||||
+ return -1;
|
|
||||||
+}
|
|
||||||
+#endif
|
|
||||||
|
|
||||||
/*
|
|
||||||
* End of timeout.c
|
|
||||||
diff --git src/timeout.h src/timeout.h
|
|
||||||
index 546c13b..f372297 100644
|
|
||||||
--- src/timeout.h
|
|
||||||
+++ src/timeout.h
|
|
||||||
@@ -17,7 +17,11 @@
|
|
||||||
#ifndef _TIMEOUT_H
|
|
||||||
#define _TIMEOUT_H
|
|
||||||
|
|
||||||
-#include "config.h" /* For _FILE_OFFSET_BITS */
|
|
||||||
+#include "config.h"
|
|
||||||
+
|
|
||||||
+#ifndef WITH_TIMEOUT_STAT
|
|
||||||
+# define WITH_TIMEOUT_STAT 0
|
|
||||||
+#endif
|
|
||||||
|
|
||||||
#include <sys/types.h>
|
|
||||||
#include <sys/stat.h>
|
|
||||||
@@ -30,7 +34,12 @@
|
|
||||||
# endif
|
|
||||||
#endif
|
|
||||||
|
|
||||||
-typedef int (*stat_t)(const char *, struct stat *restrict);
|
|
||||||
+typedef int (*stat_t)(const char *, struct stat *);
|
|
||||||
+
|
|
||||||
+#if WITH_TIMEOUT_STAT > 0
|
|
||||||
extern int timeout(stat_t, const char *, struct stat *restrict, time_t);
|
|
||||||
+#else
|
|
||||||
+# define timeout(func,path,buf,dummy) (func)((path),(buf))
|
|
||||||
+#endif
|
|
||||||
|
|
||||||
#endif
|
|
||||||
@ -1,3 +0,0 @@
|
|||||||
version https://git-lfs.github.com/spec/v1
|
|
||||||
oid sha256:b17224e2385f6a799ffebba27eb7870771d42555e86814ef56b6d7e955765514
|
|
||||||
size 432501
|
|
||||||
34
psmisc-git-3638cc55b4d08851faba46635d737b24d016665b.patch
Normal file
34
psmisc-git-3638cc55b4d08851faba46635d737b24d016665b.patch
Normal file
@ -0,0 +1,34 @@
|
|||||||
|
commit 3638cc55b4d08851faba46635d737b24d016665b
|
||||||
|
Author: Brad Jorsch <anomie@users.sourceforge.net>
|
||||||
|
Date: Fri Feb 28 21:55:02 2014 +1100
|
||||||
|
|
||||||
|
Typo in fuser makes -M on all the time
|
||||||
|
|
||||||
|
Brad found that fuser had the -M option on all the time.
|
||||||
|
A simple but significant typo caused this, thanks the the patch.
|
||||||
|
|
||||||
|
Bug-Debian: http://bugs.debian.org/740275
|
||||||
|
|
||||||
|
Signed-off-by: Craig Small <csmall@enc.com.au>
|
||||||
|
|
||||||
|
================================================================================
|
||||||
|
--- psmisc-22.21/ChangeLog
|
||||||
|
+++ psmisc-22.21/ChangeLog
|
||||||
|
@@ -1,3 +1,6 @@
|
||||||
|
+Changes in 22.22
|
||||||
|
+================
|
||||||
|
+ * Fixed typo in fuser which has -M on Debian #740275
|
||||||
|
* Make usage of linked lists of devices found in
|
||||||
|
/proc/self/mountinfo optional
|
||||||
|
* Make timeout() in timeout.c work with shared mmap to
|
||||||
|
--- psmisc-22.21/src/fuser.c
|
||||||
|
+++ psmisc-22.21/src/fuser.c
|
||||||
|
@@ -1151,7 +1151,7 @@
|
||||||
|
usage(_("No process specification given"));
|
||||||
|
|
||||||
|
/* Check if -M flag was used and if so check mounts */
|
||||||
|
- if (opts * OPT_ISMOUNTPOINT) {
|
||||||
|
+ if (opts & OPT_ISMOUNTPOINT) {
|
||||||
|
check_mountpoints(&mounts, &names_head, &names_tail);
|
||||||
|
}
|
||||||
|
|
||||||
@ -1,3 +1,9 @@
|
|||||||
|
-------------------------------------------------------------------
|
||||||
|
Fri Apr 25 00:59:39 CEST 2014 - ro@suse.de
|
||||||
|
|
||||||
|
- add patch to fix fuser -M option active all the time (bnc#874983)
|
||||||
|
psmisc-git-3638cc55b4d08851faba46635d737b24d016665b.patch
|
||||||
|
|
||||||
-------------------------------------------------------------------
|
-------------------------------------------------------------------
|
||||||
Mon Mar 24 16:01:51 UTC 2014 - werner@suse.de
|
Mon Mar 24 16:01:51 UTC 2014 - werner@suse.de
|
||||||
|
|
||||||
|
|||||||
@ -35,6 +35,8 @@ Patch0: %name-22.21.dif
|
|||||||
Patch1: %name-22.12-tigetstr.patch
|
Patch1: %name-22.12-tigetstr.patch
|
||||||
Patch2: %name-22.21-pstree.patch
|
Patch2: %name-22.21-pstree.patch
|
||||||
Patch42: %{name}-22.21-upstream.patch
|
Patch42: %{name}-22.21-upstream.patch
|
||||||
|
# PATCH-FIX-UPSTREAM psmisc-git-3638cc55b4d08851faba46635d737b24d016665b.patch bnc#874983
|
||||||
|
Patch43: %{name}-git-3638cc55b4d08851faba46635d737b24d016665b.patch
|
||||||
|
|
||||||
%define nopeek s390 s390x ia64 %sparc hppa aarch64
|
%define nopeek s390 s390x ia64 %sparc hppa aarch64
|
||||||
|
|
||||||
@ -54,6 +56,7 @@ processes that are using specified files or filesystems.
|
|||||||
%patch1 -p0 -b .tigetstr
|
%patch1 -p0 -b .tigetstr
|
||||||
%patch2 -p0 -b .pstree
|
%patch2 -p0 -b .pstree
|
||||||
%patch0 -p0 -b .0
|
%patch0 -p0 -b .0
|
||||||
|
%patch43 -p1 -b .fuserfix
|
||||||
|
|
||||||
%build
|
%build
|
||||||
autoreconf -fi
|
autoreconf -fi
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user