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strings: fix exit status if a file before the last one fails

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Previously a command like "strings f1 f2 f3" reported the exit status
based only on processing the last file.

As with GNU strings, report an error exit status if an error was
encountered processing any of the files. While here simplify the
exit status handling to just success (0) / failure (1).

Reviewed by:	brooks
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D8334
This commit is contained in:
Ed Maste 2016-10-26 17:07:53 +00:00
parent f1ae17fb50
commit f8d647b44d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=307969
1 changed files with 11 additions and 16 deletions
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27
contrib/elftoolchain/strings/strings.c
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@ -48,12 +48,6 @@
ELFTC_VCSID("$Id: strings.c 3446 2016-05-03 01:31:17Z emaste $");
enum return_code {
RETURN_OK,
RETURN_NOINPUT,
RETURN_SOFTWARE
};
enum radix_style {
RADIX_DECIMAL,
RADIX_HEX,
@ -107,7 +101,7 @@ main(int argc, char **argv)
{
int ch, rc;
rc = RETURN_OK;
rc = 0;
min_len = 0;
encoding_size = 1;
if (elf_version(EV_CURRENT) == EV_NONE)
@ -197,7 +191,8 @@ main(int argc, char **argv)
if (!*argv)
rc = handle_file("{standard input}");
else while (*argv) {
rc = handle_file(*argv);
if (handle_file(*argv) != 0)
rc = 1;
argv++;
}
return (rc);
@ -209,11 +204,11 @@ handle_file(const char *name)
int fd, rt;
if (name == NULL)
return (RETURN_NOINPUT);
return (1);
if (strcmp("{standard input}", name) != 0) {
if (freopen(name, "rb", stdin) == NULL) {
warnx("'%s': %s", name, strerror(errno));
return (RETURN_NOINPUT);
return (1);
}
} else {
return (find_strings(name, (off_t)0, (off_t)0));
@ -221,7 +216,7 @@ handle_file(const char *name)
fd = fileno(stdin);
if (fd < 0)
return (RETURN_NOINPUT);
return (1);
rt = handle_elf(name, fd);
return (rt);
}
@ -239,7 +234,7 @@ handle_binary(const char *name, int fd)
(void) lseek(fd, (off_t)0, SEEK_SET);
if (!fstat(fd, &buf))
return (find_strings(name, (off_t)0, buf.st_size));
return (RETURN_SOFTWARE);
return (1);
}
/*
@ -257,7 +252,7 @@ handle_elf(const char *name, int fd)
Elf_Scn *scn;
int rc;
rc = RETURN_OK;
rc = 0;
/* If entire file is chosen, treat it as a binary file */
if (entire_file)
return (handle_binary(name, fd));
@ -272,7 +267,7 @@ handle_elf(const char *name, int fd)
if (gelf_getehdr(elf, &elfhdr) == NULL) {
(void) elf_end(elf);
warnx("%s: ELF file could not be processed", name);
return (RETURN_SOFTWARE);
return (1);
}
if (elfhdr.e_shnum == 0 && elfhdr.e_type == ET_CORE) {
@ -352,7 +347,7 @@ find_strings(const char *name, off_t offset, off_t size)
if ((obuf = (char*)calloc(1, min_len + 1)) == NULL) {
(void) fprintf(stderr, "Unable to allocate memory: %s\n",
strerror(errno));
return (RETURN_SOFTWARE);
return (1);
}
(void) fseeko(stdin, offset, SEEK_SET);
@ -426,7 +421,7 @@ find_strings(const char *name, off_t offset, off_t size)
}
_exit1:
free(obuf);
return (RETURN_OK);
return (0);
}
#define USAGE_MESSAGE "\