Correzioni ai valori di ritorno di setpriority e sched_setscheduler,

come segnalato Francesco Cosoleto.

Aggiunta del programma di impostazione delle quote disco.

diff --git a/prochand.tex b/prochand.tex
index 7fe061ffcb81b5d369b937932b4b05c5fa44438b..ad90d7eac4828705f44eaad84b608634a5bfce43 100644 (file)
--- a/prochand.tex
+++ b/prochand.tex
@@ -2492,8 +2492,8 @@ impostare la priorit
 {int setpriority(int which, int who, int prio)}  
   Imposta la priorità per l'insieme dei processi specificati.
 
-  \bodydesc{La funzione ritorna la priorità in caso di successo e -1 in caso di
-    errore, nel qual caso \var{errno} può assumere i valori:
+  \bodydesc{La funzione ritorna 0 in caso di successo e -1 in caso di errore,
+    nel qual caso \var{errno} può assumere i valori:
   \begin{errlist}
   \item[\errcode{ESRCH}] non c'è nessun processo che corrisponda ai valori di
   \param{which} e \param{who}.
@@ -2610,8 +2610,8 @@ la funzione 
 {int sched\_setscheduler(pid\_t pid, int policy, const struct sched\_param *p)}
   Imposta priorità e politica di scheduling.
   
-  \bodydesc{La funzione ritorna la priorità in caso di successo e $-$1 in caso
-    di errore, nel qual caso \var{errno} può assumere i valori:
+  \bodydesc{La funzione ritorna 0 in caso di successo e $-$1 in caso di
+    errore, nel qual caso \var{errno} può assumere i valori:
     \begin{errlist}
     \item[\errcode{ESRCH}] il processo \param{pid} non esiste.
     \item[\errcode{EINVAL}] il valore di \param{policy} non esiste o il
@@ -2653,7 +2653,7 @@ per \param{policy} mantiene la politica di scheduling corrente.
   \label{tab:proc_sched_policy}
 \end{table}
 
-\footnotetext[41]{introdotto con il kernel 2.6.16.}
+\footnotetext[44]{introdotto con il kernel 2.6.16.}
 \footnotetext{introdotto con il kernel 2.6.23.}
 
 Con le versioni più recenti del kernel sono state introdotte anche delle

diff --git a/sources/mygetquota.c b/sources/mygetquota.c
index 82e7e9e2ad0f6fa0ef278a0e8bd58c435c93949f..db4311a10ce570a3e7c3c6f1812ded540d3604f7 100644 (file)
--- a/sources/mygetquota.c
+++ b/sources/mygetquota.c
@@ -91,10 +91,10 @@ int main(int argc, char *argv[])
     uid = atoi(argv[optind]);
     ret = quotactl(QCMD(Q_GETQUOTA,who), argv[optind+1], uid, (caddr_t) &dq);
     if (!ret) {
-       printf("Data:%7.1qu\n", dq.dqb_curspace);
-       printf("Soft:%7.1qu\tHard: %7.1qu\tGrace: %7.1qu\n", dq.dqb_bsoftlimit, dq.dqb_bhardlimit, dq.dqb_btime);       
+       printf("Data:%lld\n", dq.dqb_curspace);
+       printf("Soft:%lld\tHard: %lld\tGrace: %lld\n", dq.dqb_bsoftlimit, dq.dqb_bhardlimit, dq.dqb_btime);     
        printf("Files: %7.1qu\n", dq.dqb_curinodes);
-       printf("Soft: %7.1qu\tHard: %7.1qu\tGrace: %7.1qu\n", dq.dqb_isoftlimit, dq.dqb_ihardlimit, dq.dqb_itime);
+       printf("Soft: %lld\tHard: %lld\tGrace: %lld\n", dq.dqb_isoftlimit, dq.dqb_ihardlimit, dq.dqb_itime);
     } else
        perror("errore");
     exit(0);

diff --git a/sources/mysetquota.c b/sources/mysetquota.c
new file mode 100644 (file)
index 0000000..bfc9a3d
--- /dev/null
+++ b/sources/mysetquota.c
@@ -0,0 +1,141 @@
+/* mysetquota.c
+ * 
+ * Copyright (C) 2010 Simone Piccardi
+ * 
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*****************************************************************************
+ *
+ * File mysetquota.c: An example for quotactl function
+ *
+ * Author: S. Piccardi Jun. 2010
+ *
+ *****************************************************************************/
+#include <string.h>      /* C strings library */
+#include <sys/types.h>   /* primitive system data types */
+#include <sys/stat.h>    /* file characteristics constants and functions */
+#include <unistd.h>      /* unix standard library */
+#include <stdlib.h>      /* C standard library */
+#include <stdio.h>       /* standard I/O library */
+#include <sys/quota.h>
+
+/*
+ * Program mysetquota
+ *
+ * Use quotactl to set an user quota
+ */
+
+/* Help printing routine */
+void usage(void);
+void printquota(struct dqblk dq);
+
+int main(int argc, char *argv[]) 
+{
+/* 
+ * Variables definition
+ */
+    int i,j,ret;
+    int who=USRQUOTA;
+    uid_t uid=0;
+    struct dqblk dq;
+    /*
+     * Input section: decode command line parameters 
+     * Use getopt function
+     */
+    opterr = 0;         /* don't want writing to stderr */
+    while ( (i = getopt(argc, argv, "hgu")) != -1) {
+       switch (i) {
+       /* 
+        * Handling options 
+        */ 
+       case 'h':                                             /* help option */
+           usage();
+           break;
+       case 'g':                                             /* group option */
+           who=GRPQUOTA;
+           break;
+       case 'u':                                             /* user option */
+           who=USRQUOTA;
+           break;
+       case '?':                                    /* unrecognized options */
+           printf("Unrecognized options -%c\n",optopt);
+           usage();
+       default:                                       /* should not reached */
+           usage();
+       }
+    }
+    /* ***********************************************************
+     * 
+     *          Options processing completed
+     *
+     *               Main code beginning
+     * 
+     * ***********************************************************/
+    /* remaining argument check */
+    if ((argc - optind) != 6) {
+       printf("Wrong number of arguments %d\n", argc - optind);
+        usage();
+    }
+    /* main body */
+    ret = quotactl(QCMD(Q_GETQUOTA,who), argv[optind+1], uid, (caddr_t) &dq);
+    if (!ret) {
+       printf("Previous values\n");
+       printquota(dq);
+    } else {
+       perror("errore");
+       exit(1);
+    }
+
+    uid = atoi(argv[optind]);
+    dq.dqb_bsoftlimit =  atoi(argv[optind+2]);
+    dq.dqb_bhardlimit =  atoi(argv[optind+3]);
+    dq.dqb_isoftlimit =  atoi(argv[optind+4]);
+    dq.dqb_ihardlimit =  atoi(argv[optind+5]);
+    dq.dqb_valid = QIF_LIMITS;
+    ret = quotactl(QCMD(Q_SETQUOTA,who), argv[optind+1], uid, (caddr_t) &dq);
+    if (!ret) {
+       ret = quotactl(QCMD(Q_GETQUOTA,who), argv[optind+1], uid, (caddr_t) &dq);
+       if (!ret) {
+           printf("After values\n");
+           printquota(dq);
+       } else {
+           perror("errore in rilettura");
+           exit(1);
+       }
+    } else {
+       perror("errore in scrittura");
+       exit(1);
+    }
+
+
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+    printf("Program mysetquota: set an user quota \n");
+    printf("Usage:\n");
+    printf("mysetquota [-u|-g] uid filesystem \n");
+    exit(1);
+}
+
+void printquota(struct dqblk dq) 
+{
+    printf("Data:%lld\n", dq.dqb_curspace);
+    printf("Soft:%lld\tHard: %lld\tGrace: %lld\n", dq.dqb_bsoftlimit, dq.dqb_bhardlimit, dq.dqb_btime);        
+    printf("Files: %lld\n", dq.dqb_curinodes);
+    printf("Soft: %lld\tHard: %lld\tGrace: %lld\n", dq.dqb_isoftlimit, dq.dqb_ihardlimit, dq.dqb_itime);
+    
+}