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mseq: better error reporting

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This commit is contained in:
Leah Neukirchen 2017-02-18 16:46:34 +01:00
parent f4a3feb70a
commit ba736b0735
1 changed files with 9 additions and 4 deletions
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13
mseq.c
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@ -164,7 +164,7 @@ cat(FILE *src, FILE *dst)
while ((rd = fread(buf, 1, sizeof buf, src)) > 0)
fwrite(buf, 1, rd, dst);
if (!feof(src)) {
perror("fread");
perror("mseq: fread");
exit(2);
}
}
@ -191,7 +191,12 @@ stdinmode()
snprintf(oldfile, sizeof oldfile, "%s.old", seqfile);
outfile = fopen(tmpfile, "w+");
if (!outfile) {
perror("fopen");
fprintf(stderr,
"mseq: Could not create sequence file '%s': %s.\n",
seqfile, strerror(errno));
fprintf(stderr,
"mseq: Ensure %s exists and is writable.\n",
blaze822_home_file(""));
exit(2);
}
if (Aflag) {
@ -222,11 +227,11 @@ stdinmode()
if (Sflag) {
fflush(outfile);
if (rename(seqfile, oldfile) < 0 && errno != ENOENT) {
perror("rename");
perror("mseq: rename");
exit(2);
}
if (rename(tmpfile, seqfile) < 0) {
perror("rename");
perror("mseq: rename");
exit(2);
}