rpm: cliutils.c Source File

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cliutils.c
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1 #include "system.h"
2 #if HAVE_MCHECK_H
3 #include <mcheck.h>
4 #endif
5 #include <errno.h>
6 #include <sys/wait.h>
7
8 #include <rpm/rpmlog.h>
9 #include <rpm/rpmlib.h>
10 #include <rpm/rpmfileutil.h>
11 #include <rpm/rpmmacro.h>
12 #include <rpm/rpmcli.h>
13 #include "cliutils.h"
14 #include "debug.h"
15
16 static pid_t pipeChild = 0;
17
18 RPM_GNUC_NORETURN
19 void argerror(const char * desc)
20 {
21 fprintf(stderr, _("%s: %s\n"), __progname, desc);
22 exit(EXIT_FAILURE);
23 }
24
25 static void printVersion(FILE * fp)
26 {
27 fprintf(fp, _("RPM version %s\n"), rpmEVR);
28 }
29
30 static void printBanner(FILE * fp)
31 {
32 fprintf(fp, _("Copyright (C) 1998-2002 - Red Hat, Inc.\n"));
33 fprintf(fp, _("This program may be freely redistributed under the terms of the GNU GPL\n"));
34 }
35
36 void printUsage(poptContext con, FILE * fp, int flags)
37 {
38 printVersion(fp);
39 printBanner(fp);
40 fprintf(fp, "\n");
41
42 if (rpmIsVerbose())
43 poptPrintHelp(con, fp, flags);
44 else
45 poptPrintUsage(con, fp, flags);
46 }
47
48 int initPipe(void)
49 {
50 int p[2];
51
52 if (pipe(p) < 0) {
53 fprintf(stderr, _("creating a pipe for --pipe failed: %m\n"));
54 return -1;
55 }
56
57 if (!(pipeChild = fork())) {
58 (void) signal(SIGPIPE, SIG_DFL);
59 (void) close(p[1]);
60 (void) dup2(p[0], STDIN_FILENO);
61 (void) close(p[0]);
62 (void) execl("/bin/sh", "/bin/sh", "-c", rpmcliPipeOutput, NULL);
63 fprintf(stderr, _("exec failed\n"));
64 exit(EXIT_FAILURE);
65 }
66
67 (void) close(p[0]);
68 (void) dup2(p[1], STDOUT_FILENO);
69 (void) close(p[1]);
70 return 0;
71 }
72
73 int finishPipe(void)
74 {
75 int rc = 0;
76 if (pipeChild) {
77 int status;
78 pid_t reaped;
79
80 (void) fclose(stdout);
81 do {
82 reaped = waitpid(pipeChild, &status, 0);
83 } while (reaped == -1 && errno == EINTR);
84
85 if (reaped == -1 || !WIFEXITED(status) || WEXITSTATUS(status))
86 rc = 1;
87 }
88 return rc;
89 }