X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fluci.git;a=blobdiff_plain;f=libs%2Fsys%2Fluasrc%2Fsys.lua;h=02cea5e91d9664dd9547163722c559483074f51d;hp=7357d4cfb00a372c711f4bc35b50564b9472647c;hb=bf7287c60d3819ee2322c47d191d01e55a1ec909;hpb=4bd74d0a981dfc537f0f88ed281c661fa61a1fb7 diff --git a/libs/sys/luasrc/sys.lua b/libs/sys/luasrc/sys.lua index 7357d4cfb..02cea5e91 100644 --- a/libs/sys/luasrc/sys.lua +++ b/libs/sys/luasrc/sys.lua @@ -24,24 +24,73 @@ limitations under the License. ]]-- + +local io = require "io" +local os = require "os" +local posix = require "posix" +local table = require "table" + +local luci = {} +luci.util = require "luci.util" +luci.fs = require "luci.fs" +luci.ip = require "luci.ip" + +local tonumber, ipairs, pairs = tonumber, ipairs, pairs + + --- LuCI Linux and POSIX system utilities. -module("luci.sys", package.seeall) -require("posix") -require("luci.util") -require("luci.fs") -require("luci.ip") +module "luci.sys" + +--- Execute a given shell command and return the error code +-- @class function +-- @name call +-- @param ... Command to call +-- @return Error code of the command +function call(...) + return os.execute(...) / 256 +end + +--- Execute a given shell command and capture its standard output +-- @class function +-- @name exec +-- @param command Command to call +-- @return String containg the return the output of the command +exec = luci.util.exec --- Invoke the luci-flash executable to write an image to the flash memory. +-- @param image Local path or URL to image file -- @param kpattern Pattern of files to keep over flash process --- @return Return value of os.execute() +-- @return boolean indicating status +-- @return error message if any function flash(image, kpattern) local cmd = "luci-flash " if kpattern then cmd = cmd .. "-k '" .. kpattern:gsub("'", "") .. "' " end - cmd = cmd .. "'" .. image:gsub("'", "") .. "' >/dev/null 2>&1" + cmd = cmd .. "'" .. image:gsub("'", "") .. "' 2>/dev/null" - return os.execute(cmd) + local fp = io.popen(cmd) + fp:setvbuf("no") + + local line = fp:read() + + if line == "Invalid image type" then + fp:close() + return false, line + else + line = fp:read() + if line == "Performing system upgrade..." then + return true + end + + line = fp:read() + if line == "Performing system upgrade..." then + return true + end + + fp:close() + return false, line + end end --- Retrieve information about currently mounted file systems. @@ -94,10 +143,16 @@ end --- Returns the contents of a documented referred by an URL. -- @param url The URL to retrieve -- @param stream Return a stream instead of a buffer +-- @param target Directly write to target file name -- @return String containing the contents of given the URL -function httpget(url, stream) - local source = stream and io.open or luci.util.exec - return source("wget -qO- '"..url:gsub("'", "").."'") +function httpget(url, stream, target) + if not target then + local source = stream and io.open or luci.util.exec + return source("wget -qO- '"..url:gsub("'", "").."'") + else + return os.execute("wget -qO '%s' '%s'" % + {target:gsub("'", ""), url:gsub("'", "")}) + end end --- Returns the system load average values. @@ -124,9 +179,6 @@ end -- @return String containing the memory used for caching in kB -- @return String containing the memory used for buffering in kB -- @return String containing the free memory amount in kB --- @return Number containing free memory in percent --- @return Number containing buffer memory in percent --- @return Number containing cache memory in percent function sysinfo() local c1 = "cat /proc/cpuinfo|grep system\\ typ|cut -d: -f2 2>/dev/null" local c2 = "uname -m 2>/dev/null" @@ -139,13 +191,10 @@ function sysinfo() local system = luci.util.trim(luci.util.exec(c1)) local model = "" - local memtotal = luci.util.trim(luci.util.exec(c5)) - local memcached = luci.util.trim(luci.util.exec(c6)) - local memfree = luci.util.trim(luci.util.exec(c7)) - local membuffers = luci.util.trim(luci.util.exec(c8)) - local perc_memfree = math.floor((memfree/memtotal)*100) - local perc_membuffers = math.floor((membuffers/memtotal)*100) - local perc_memcached = math.floor((memcached/memtotal)*100) + local memtotal = tonumber(luci.util.trim(luci.util.exec(c5))) + local memcached = tonumber(luci.util.trim(luci.util.exec(c6))) + local memfree = tonumber(luci.util.trim(luci.util.exec(c7))) + local membuffers = tonumber(luci.util.trim(luci.util.exec(c8))) if system == "" then system = luci.util.trim(luci.util.exec(c2)) @@ -154,7 +203,7 @@ function sysinfo() model = luci.util.trim(luci.util.exec(c4)) end - return system, model, memtotal, memcached, membuffers, memfree, perc_memfree, perc_membuffers, perc_memcached + return system, model, memtotal, memcached, membuffers, memfree end --- Retrieves the output of the "logread" command. @@ -195,6 +244,8 @@ end group = {} --- Returns information about a POSIX user group. +-- @class function +-- @name getgroup -- @param group Group ID or name of a system user group -- @return Table with information about the requested group group.getgroup = posix.getgroup @@ -295,9 +346,51 @@ end process = {} --- Get the current process id. +-- @class function +-- @name process.info -- @return Number containing the current pid process.info = posix.getpid +--- Retrieve information about currently running processes. +-- @return Table containing process information +function process.list() + local data = {} + local k + local ps = luci.util.execi("top -bn1") + + if not ps then + return + end + + while true do + local line = ps() + if not line then + return + end + + k = luci.util.split(luci.util.trim(line), "%s+", nil, true) + if k[1] == "PID" then + break + end + end + + for line in ps do + local row = {} + + line = luci.util.trim(line) + for i, value in ipairs(luci.util.split(line, "%s+", #k-1, true)) do + row[k[i]] = value + end + + local pid = tonumber(row[k[1]]) + if pid then + data[pid] = row + end + end + + return data +end + --- Set the gid of a process identified by given pid. -- @param pid Number containing the process id -- @param gid Number containing the Unix group id @@ -318,6 +411,15 @@ function process.setuser(pid, uid) return posix.setpid("u", pid, uid) end +--- Send a signal to a process identified by given pid. +-- @class function +-- @name process.signal +-- @param pid Number containing the process id +-- @param sig Signal to send (default: 15 [SIGTERM]) +-- @return Boolean indicating successful operation +-- @return Number containing the error code if failed +process.signal = posix.kill + --- LuCI system utilities / user related functions. -- @class module @@ -391,8 +493,9 @@ end --- Get iwlist scan output from all wireless devices. -- @return Table of tables contaiing all scan results -function wifi.iwscan() - local cnt = luci.util.exec("iwlist scan 2>/dev/null") +function wifi.iwscan(iface) + local siface = iface or "" + local cnt = luci.util.exec("iwlist "..siface.." scan 2>/dev/null") local iws = {} for i, l in pairs(luci.util.split(luci.util.trim(cnt), "\n\n")) do @@ -410,7 +513,7 @@ function wifi.iwscan() end end - return iws + return iface and (iws[iface] or {}) or iws end