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Date: Mon, 19 Apr 2021 15:34:58 +0200
From: Andrea Claudi <aclaudi@...hat.com>
To: netdev@...r.kernel.org
Cc: stephen@...workplumber.org, dsahern@...il.com
Subject: [PATCH iproute2] lib: move get_task_name() from rdma
The function get_task_name() is used to get the name of a process from
its pid, and its implementation is similar to ip/iptuntap.c:pid_name().
Move it to lib/fs.c to use a single implementation and make it easily
reusable.
Signed-off-by: Andrea Claudi <aclaudi@...hat.com>
---
include/utils.h | 1 +
ip/iptuntap.c | 31 +------------------------------
lib/fs.c | 24 ++++++++++++++++++++++++
rdma/res.c | 24 ------------------------
rdma/res.h | 1 -
5 files changed, 26 insertions(+), 55 deletions(-)
diff --git a/include/utils.h b/include/utils.h
index b29c3798..187444d5 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -308,6 +308,7 @@ char *find_cgroup2_mount(bool do_mount);
__u64 get_cgroup2_id(const char *path);
char *get_cgroup2_path(__u64 id, bool full);
int get_command_name(const char *pid, char *comm, size_t len);
+char *get_task_name(pid_t pid);
int get_rtnl_link_stats_rta(struct rtnl_link_stats64 *stats64,
struct rtattr *tb[]);
diff --git a/ip/iptuntap.c b/ip/iptuntap.c
index e9cc7c0f..9cdb4a80 100644
--- a/ip/iptuntap.c
+++ b/ip/iptuntap.c
@@ -260,35 +260,6 @@ static void print_flags(long flags)
close_json_array(PRINT_JSON, NULL);
}
-static char *pid_name(pid_t pid)
-{
- char *comm;
- FILE *f;
- int err;
-
- err = asprintf(&comm, "/proc/%d/comm", pid);
- if (err < 0)
- return NULL;
-
- f = fopen(comm, "r");
- free(comm);
- if (!f) {
- perror("fopen");
- return NULL;
- }
-
- if (fscanf(f, "%ms\n", &comm) != 1) {
- perror("fscanf");
- comm = NULL;
- }
-
-
- if (fclose(f))
- perror("fclose");
-
- return comm;
-}
-
static void show_processes(const char *name)
{
glob_t globbuf = { };
@@ -346,7 +317,7 @@ static void show_processes(const char *name)
} else if (err == 2 &&
!strcmp("iff", key) &&
!strcmp(name, value)) {
- char *pname = pid_name(pid);
+ char *pname = get_task_name(pid);
print_string(PRINT_ANY, "name",
"%s", pname ? : "<NULL>");
diff --git a/lib/fs.c b/lib/fs.c
index ee0b130b..f161d888 100644
--- a/lib/fs.c
+++ b/lib/fs.c
@@ -316,3 +316,27 @@ int get_command_name(const char *pid, char *comm, size_t len)
return 0;
}
+
+char *get_task_name(pid_t pid)
+{
+ char *comm;
+ FILE *f;
+
+ if (!pid)
+ return NULL;
+
+ if (asprintf(&comm, "/proc/%d/comm", pid) < 0)
+ return NULL;
+
+ f = fopen(comm, "r");
+ if (!f)
+ return NULL;
+
+ if (fscanf(f, "%ms\n", &comm) != 1)
+ comm = NULL;
+
+ fclose(f);
+
+ return comm;
+}
+
diff --git a/rdma/res.c b/rdma/res.c
index dc12bbe4..f42ae938 100644
--- a/rdma/res.c
+++ b/rdma/res.c
@@ -195,30 +195,6 @@ void print_qp_type(struct rd *rd, uint32_t val)
qp_types_to_str(val));
}
-char *get_task_name(uint32_t pid)
-{
- char *comm;
- FILE *f;
-
- if (!pid)
- return NULL;
-
- if (asprintf(&comm, "/proc/%d/comm", pid) < 0)
- return NULL;
-
- f = fopen(comm, "r");
- free(comm);
- if (!f)
- return NULL;
-
- if (fscanf(f, "%ms\n", &comm) != 1)
- comm = NULL;
-
- fclose(f);
-
- return comm;
-}
-
void print_key(struct rd *rd, const char *name, uint64_t val,
struct nlattr *nlattr)
{
diff --git a/rdma/res.h b/rdma/res.h
index 707941da..e8bd02e4 100644
--- a/rdma/res.h
+++ b/rdma/res.h
@@ -155,7 +155,6 @@ filters qp_valid_filters[MAX_NUMBER_OF_FILTERS] = {
RES_FUNC(res_qp, RDMA_NLDEV_CMD_RES_QP_GET, qp_valid_filters, false,
RDMA_NLDEV_ATTR_RES_LQPN);
-char *get_task_name(uint32_t pid);
void print_dev(struct rd *rd, uint32_t idx, const char *name);
void print_link(struct rd *rd, uint32_t idx, const char *name, uint32_t port,
struct nlattr **nla_line);
--
2.30.2
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