summaryrefslogtreecommitdiff
path: root/fs/proc
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 20:58:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 20:58:12 -0800
commit848b81415c42ff3dc9a4204749087b015c37ef66 (patch)
tree391da3a73aea48632248220d2d6b8d45a88f7eae /fs/proc
parent992956189de58cae9f2be40585bc25105cd7c5ad (diff)
parent6fd59a83b9261fa53eaf98fb5514abba504a3ea3 (diff)
downloadlwn-848b81415c42ff3dc9a4204749087b015c37ef66.tar.gz
lwn-848b81415c42ff3dc9a4204749087b015c37ef66.zip
Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc patches from Andrew Morton: "Incoming: - lots of misc stuff - backlight tree updates - lib/ updates - Oleg's percpu-rwsem changes - checkpatch - rtc - aoe - more checkpoint/restart support I still have a pile of MM stuff pending - Pekka should be merging later today after which that is good to go. A number of other things are twiddling thumbs awaiting maintainer merges." * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (180 commits) scatterlist: don't BUG when we can trivially return a proper error. docs: update documentation about /proc/<pid>/fdinfo/<fd> fanotify output fs, fanotify: add @mflags field to fanotify output docs: add documentation about /proc/<pid>/fdinfo/<fd> output fs, notify: add procfs fdinfo helper fs, exportfs: add exportfs_encode_inode_fh() helper fs, exportfs: escape nil dereference if no s_export_op present fs, epoll: add procfs fdinfo helper fs, eventfd: add procfs fdinfo helper procfs: add ability to plug in auxiliary fdinfo providers tools/testing/selftests/kcmp/kcmp_test.c: print reason for failure in kcmp_test breakpoint selftests: print failure status instead of cause make error kcmp selftests: print fail status instead of cause make error kcmp selftests: make run_tests fix mem-hotplug selftests: print failure status instead of cause make error cpu-hotplug selftests: print failure status instead of cause make error mqueue selftests: print failure status instead of cause make error vm selftests: print failure status instead of cause make error ubifs: use prandom_bytes mtd: nandsim: use prandom_bytes ...
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/array.c21
-rw-r--r--fs/proc/fd.c2
-rw-r--r--fs/proc/proc_devtree.c6
-rw-r--r--fs/proc/task_mmu.c53
4 files changed, 75 insertions, 7 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index d66248a1919b..6a91e6ffbcbd 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -212,7 +212,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
group_info = cred->group_info;
task_unlock(p);
- for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
+ for (g = 0; g < group_info->ngroups; g++)
seq_printf(m, "%d ",
from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
put_cred(cred);
@@ -220,7 +220,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
seq_putc(m, '\n');
}
-static void render_sigset_t(struct seq_file *m, const char *header,
+void render_sigset_t(struct seq_file *m, const char *header,
sigset_t *set)
{
int i;
@@ -308,6 +308,10 @@ static void render_cap_t(struct seq_file *m, const char *header,
seq_putc(m, '\n');
}
+/* Remove non-existent capabilities */
+#define NORM_CAPS(v) (v.cap[CAP_TO_INDEX(CAP_LAST_CAP)] &= \
+ CAP_TO_MASK(CAP_LAST_CAP + 1) - 1)
+
static inline void task_cap(struct seq_file *m, struct task_struct *p)
{
const struct cred *cred;
@@ -321,12 +325,24 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
cap_bset = cred->cap_bset;
rcu_read_unlock();
+ NORM_CAPS(cap_inheritable);
+ NORM_CAPS(cap_permitted);
+ NORM_CAPS(cap_effective);
+ NORM_CAPS(cap_bset);
+
render_cap_t(m, "CapInh:\t", &cap_inheritable);
render_cap_t(m, "CapPrm:\t", &cap_permitted);
render_cap_t(m, "CapEff:\t", &cap_effective);
render_cap_t(m, "CapBnd:\t", &cap_bset);
}
+static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
+{
+#ifdef CONFIG_SECCOMP
+ seq_printf(m, "Seccomp:\t%d\n", p->seccomp.mode);
+#endif
+}
+
static inline void task_context_switch_counts(struct seq_file *m,
struct task_struct *p)
{
@@ -360,6 +376,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
}
task_sig(m, task);
task_cap(m, task);
+ task_seccomp(m, task);
task_cpus_allowed(m, task);
cpuset_task_status_allowed(m, task);
task_context_switch_counts(m, task);
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index f28a875f8779..d7a4a28ef630 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -50,6 +50,8 @@ static int seq_show(struct seq_file *m, void *v)
if (!ret) {
seq_printf(m, "pos:\t%lli\nflags:\t0%o\n",
(long long)file->f_pos, f_flags);
+ if (file->f_op->show_fdinfo)
+ ret = file->f_op->show_fdinfo(m, file);
fput(file);
}
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index df7dd08d4391..de20ec480fa0 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -195,11 +195,7 @@ void proc_device_tree_add_node(struct device_node *np,
set_node_proc_entry(np, de);
for (child = NULL; (child = of_get_next_child(np, child));) {
/* Use everything after the last slash, or the full name */
- p = strrchr(child->full_name, '/');
- if (!p)
- p = child->full_name;
- else
- ++p;
+ p = kbasename(child->full_name);
if (duplicate_name(de, p))
p = fixup_name(np, de, p);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 48775628abbf..448455b7fd91 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -526,6 +526,57 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
return 0;
}
+static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
+{
+ /*
+ * Don't forget to update Documentation/ on changes.
+ */
+ static const char mnemonics[BITS_PER_LONG][2] = {
+ /*
+ * In case if we meet a flag we don't know about.
+ */
+ [0 ... (BITS_PER_LONG-1)] = "??",
+
+ [ilog2(VM_READ)] = "rd",
+ [ilog2(VM_WRITE)] = "wr",
+ [ilog2(VM_EXEC)] = "ex",
+ [ilog2(VM_SHARED)] = "sh",
+ [ilog2(VM_MAYREAD)] = "mr",
+ [ilog2(VM_MAYWRITE)] = "mw",
+ [ilog2(VM_MAYEXEC)] = "me",
+ [ilog2(VM_MAYSHARE)] = "ms",
+ [ilog2(VM_GROWSDOWN)] = "gd",
+ [ilog2(VM_PFNMAP)] = "pf",
+ [ilog2(VM_DENYWRITE)] = "dw",
+ [ilog2(VM_LOCKED)] = "lo",
+ [ilog2(VM_IO)] = "io",
+ [ilog2(VM_SEQ_READ)] = "sr",
+ [ilog2(VM_RAND_READ)] = "rr",
+ [ilog2(VM_DONTCOPY)] = "dc",
+ [ilog2(VM_DONTEXPAND)] = "de",
+ [ilog2(VM_ACCOUNT)] = "ac",
+ [ilog2(VM_NORESERVE)] = "nr",
+ [ilog2(VM_HUGETLB)] = "ht",
+ [ilog2(VM_NONLINEAR)] = "nl",
+ [ilog2(VM_ARCH_1)] = "ar",
+ [ilog2(VM_DONTDUMP)] = "dd",
+ [ilog2(VM_MIXEDMAP)] = "mm",
+ [ilog2(VM_HUGEPAGE)] = "hg",
+ [ilog2(VM_NOHUGEPAGE)] = "nh",
+ [ilog2(VM_MERGEABLE)] = "mg",
+ };
+ size_t i;
+
+ seq_puts(m, "VmFlags: ");
+ for (i = 0; i < BITS_PER_LONG; i++) {
+ if (vma->vm_flags & (1UL << i)) {
+ seq_printf(m, "%c%c ",
+ mnemonics[i][0], mnemonics[i][1]);
+ }
+ }
+ seq_putc(m, '\n');
+}
+
static int show_smap(struct seq_file *m, void *v, int is_pid)
{
struct proc_maps_private *priv = m->private;
@@ -581,6 +632,8 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
seq_printf(m, "Nonlinear: %8lu kB\n",
mss.nonlinear >> 10);
+ show_smap_vma_flags(m, vma);
+
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task->mm))
? vma->vm_start : 0;