Author: des Date: Sun Feb 21 14:56:05 2016 New Revision: 295856 URL: https://svnweb.freebsd.org/changeset/base/295856
Log: Implement /proc/$$/limits. PR: 207386 Submitted by: Szymon Śliwa <[email protected]> MFC after: 3 weeks Modified: head/sys/compat/linprocfs/linprocfs.c Modified: head/sys/compat/linprocfs/linprocfs.c ============================================================================== --- head/sys/compat/linprocfs/linprocfs.c Sun Feb 21 14:50:37 2016 (r295855) +++ head/sys/compat/linprocfs/linprocfs.c Sun Feb 21 14:56:05 2016 (r295856) @@ -61,6 +61,7 @@ __FBSDID("$FreeBSD$"); #include <sys/proc.h> #include <sys/ptrace.h> #include <sys/resourcevar.h> +#include <sys/resource.h> #include <sys/sbuf.h> #include <sys/sem.h> #include <sys/smp.h> @@ -1366,6 +1367,67 @@ linprocfs_dofdescfs(PFS_FILL_ARGS) return (0); } +/* + * Filler function for proc/pid/limits + */ + +#define RLIM_NONE -1 + +static const struct limit_info { + const char *desc; + const char *unit; + unsigned long long rlim_id; +} limits_info[] = { + { "Max cpu time", "seconds", RLIMIT_CPU }, + { "Max file size", "bytes", RLIMIT_FSIZE }, + { "Max data size", "bytes", RLIMIT_DATA }, + { "Max stack size", "bytes", RLIMIT_STACK }, + { "Max core file size", "bytes", RLIMIT_CORE }, + { "Max resident set", "bytes", RLIMIT_RSS }, + { "Max processes", "processes", RLIMIT_NPROC }, + { "Max open files", "files", RLIMIT_NOFILE }, + { "Max locked memory", "bytes", RLIMIT_MEMLOCK }, + { "Max address space", "bytes", RLIMIT_AS }, + { "Max file locks", "locks", RLIM_INFINITY }, + { "Max pending signals", "signals", RLIM_INFINITY }, + { "Max msgqueue size", "bytes", RLIM_NONE }, + { "Max nice priority", "", RLIM_NONE }, + { "Max realtime priority", "", RLIM_NONE }, + { "Max realtime timeout", "us", RLIM_INFINITY }, + { 0, 0, 0 } +}; + +static int +linprocfs_doproclimits(PFS_FILL_ARGS) +{ + const struct limit_info *li; + struct rlimit li_rlimits; + struct plimit *cur_proc_lim; + + cur_proc_lim = lim_alloc(); + lim_copy(cur_proc_lim, p->p_limit); + sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", "Limit", "Soft Limit", + "Hard Limit", "Units"); + for (li = limits_info; li->desc != NULL; ++li) { + if (li->rlim_id != RLIM_INFINITY && li->rlim_id != RLIM_NONE) + li_rlimits = cur_proc_lim->pl_rlimit[li->rlim_id]; + else { + li_rlimits.rlim_cur = 0; + li_rlimits.rlim_max = 0; + } + if (li->rlim_id == RLIM_INFINITY || + li_rlimits.rlim_cur == RLIM_INFINITY) + sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", + li->desc, "unlimited", "unlimited", li->unit); + else + sbuf_printf(sb, "%-26s%-21ld%-21ld%-10s\n", + li->desc, (long)li_rlimits.rlim_cur, + (long)li_rlimits.rlim_max, li->unit); + } + lim_free(cur_proc_lim); + return (0); +} + /* * Filler function for proc/sys/kernel/random/uuid @@ -1504,6 +1566,8 @@ linprocfs_init(PFS_INIT_ARGS) NULL, NULL, NULL, 0); pfs_create_file(dir, "auxv", &linprocfs_doauxv, NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD); + pfs_create_file(dir, "limits", &linprocfs_doproclimits, + NULL, NULL, NULL, PFS_RD); /* /proc/scsi/... */ dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0); _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
