From f5b67871df566ddc0f0b6ad22d81a81d8ecce7d7 Mon Sep 17 00:00:00 2001 From: Sean Bright Date: Fri, 21 Apr 2017 13:04:44 -0400 Subject: cleanup: Fix fread() and fwrite() error handling Cleaned up some of the incorrect uses of fread() and fwrite(), mostly in the format modules. Neither of these functions will ever return a value less than 0, which we were checking for in some cases. I've introduced a fair amount of duplication in the format modules, but I plan to change how format modules work internally in a subsequent patch set, so this is simply a stop-gap. Change-Id: I8ca1cd47c20b2c0b72088bd13b9046f6977aa872 --- formats/format_g719.c | 12 ++++++++++-- formats/format_g723.c | 13 +++++++++++-- formats/format_g726.c | 12 ++++++++++-- formats/format_g729.c | 12 ++++++++++-- formats/format_gsm.c | 16 ++++++++++++---- formats/format_h263.c | 16 ++++++++++++---- formats/format_h264.c | 16 ++++++++++++---- formats/format_ilbc.c | 12 ++++++++++-- formats/format_ogg_vorbis.c | 10 +++++----- formats/format_pcm.c | 24 ++++++++++++++++++------ formats/format_siren14.c | 12 ++++++++++-- formats/format_siren7.c | 12 ++++++++++-- formats/format_sln.c | 14 +++++++++++--- formats/format_vox.c | 14 +++++++++++--- formats/format_wav.c | 23 ++++++++++++++++------- formats/format_wav_gsm.c | 14 +++++++++++--- 16 files changed, 179 insertions(+), 53 deletions(-) (limited to 'formats') diff --git a/formats/format_g719.c b/formats/format_g719.c index 8cc942717..572b88f5f 100644 --- a/formats/format_g719.c +++ b/formats/format_g719.c @@ -45,8 +45,16 @@ static struct ast_frame *g719read(struct ast_filestream *s, int *whennext) AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = BYTES_TO_SAMPLES(res); diff --git a/formats/format_g723.c b/formats/format_g723.c index 04e03b608..d4c4d4b1c 100644 --- a/formats/format_g723.c +++ b/formats/format_g723.c @@ -64,8 +64,17 @@ static struct ast_frame *g723_read(struct ast_filestream *s, int *whennext) } /* Read the data into the buffer */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size); - if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != size) { - ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno)); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = 240; diff --git a/formats/format_g726.c b/formats/format_g726.c index 08e669e26..7da6d1ecb 100644 --- a/formats/format_g726.c +++ b/formats/format_g726.c @@ -124,8 +124,16 @@ static struct ast_frame *g726_read(struct ast_filestream *s, int *whennext) AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, frame_size[fs->rate]); s->fr.samples = 8 * FRAME_TIME; if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples; diff --git a/formats/format_g729.c b/formats/format_g729.c index 49e58025f..4cefc0401 100644 --- a/formats/format_g729.c +++ b/formats/format_g729.c @@ -51,8 +51,16 @@ static struct ast_frame *g729_read(struct ast_filestream *s, int *whennext) s->fr.samples = G729A_SAMPLES; AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res && (res != 10)) /* XXX what for ? */ - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples; diff --git a/formats/format_gsm.c b/formats/format_gsm.c index a2b6d3656..39deb983e 100644 --- a/formats/format_gsm.c +++ b/formats/format_gsm.c @@ -55,10 +55,18 @@ static struct ast_frame *gsm_read(struct ast_filestream *s, int *whennext) { int res; - AST_FRAME_SET_BUFFER(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE) + AST_FRAME_SET_BUFFER(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE); if ((res = fread(s->fr.data.ptr, 1, GSM_FRAME_SIZE, s->f)) != GSM_FRAME_SIZE) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), GSM_FRAME_SIZE, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = GSM_SAMPLES; @@ -131,7 +139,7 @@ static int gsm_seek(struct ast_filestream *fs, off_t sample_offset, int whence) int i; fseeko(fs->f, 0, SEEK_END); for (i=0; i< (offset - max) / GSM_FRAME_SIZE; i++) { - if (!fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f)) { + if (fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f) != GSM_FRAME_SIZE) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } } diff --git a/formats/format_h263.c b/formats/format_h263.c index 4cc3db542..d05e59825 100644 --- a/formats/format_h263.c +++ b/formats/format_h263.c @@ -58,7 +58,7 @@ static int h263_open(struct ast_filestream *s) { unsigned int ts; - if (fread(&ts, 1, sizeof(ts), s->f) < sizeof(ts)) { + if (fread(&ts, 1, sizeof(ts), s->f) != sizeof(ts)) { ast_log(LOG_WARNING, "Empty file!\n"); return -1; } @@ -74,7 +74,7 @@ static struct ast_frame *h263_read(struct ast_filestream *s, int *whennext) struct h263_desc *fs = (struct h263_desc *)s->_private; /* Send a frame from the file to the appropriate channel */ - if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) + if ((res = fread(&len, 1, sizeof(len), s->f)) != sizeof(len)) return NULL; len = ntohs(len); mark = (len & FRAME_ENDED) ? 1 : 0; @@ -85,8 +85,16 @@ static struct ast_frame *h263_read(struct ast_filestream *s, int *whennext) } AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } s->fr.samples = fs->lastts; /* XXX what ? */ diff --git a/formats/format_h264.c b/formats/format_h264.c index 60b090211..47f71ae6c 100644 --- a/formats/format_h264.c +++ b/formats/format_h264.c @@ -50,7 +50,7 @@ struct h264_desc { static int h264_open(struct ast_filestream *s) { unsigned int ts; - if (fread(&ts, 1, sizeof(ts), s->f) < sizeof(ts)) { + if (fread(&ts, 1, sizeof(ts), s->f) != sizeof(ts)) { ast_log(LOG_WARNING, "Empty file!\n"); return -1; } @@ -66,7 +66,7 @@ static struct ast_frame *h264_read(struct ast_filestream *s, int *whennext) struct h264_desc *fs = (struct h264_desc *)s->_private; /* Send a frame from the file to the appropriate channel */ - if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) + if ((res = fread(&len, 1, sizeof(len), s->f)) != sizeof(len)) return NULL; len = ntohs(len); mark = (len & FRAME_ENDED) ? 1 : 0; @@ -77,8 +77,16 @@ static struct ast_frame *h264_read(struct ast_filestream *s, int *whennext) } AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d of %d) (%s)!\n", res, len, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } s->fr.samples = fs->lastts; diff --git a/formats/format_ilbc.c b/formats/format_ilbc.c index eab465d88..ec8ad0ffa 100644 --- a/formats/format_ilbc.c +++ b/formats/format_ilbc.c @@ -49,8 +49,16 @@ static struct ast_frame *ilbc_read(struct ast_filestream *s, int *whennext) /* Send a frame from the file to the appropriate channel */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = ILBC_SAMPLES; diff --git a/formats/format_ogg_vorbis.c b/formats/format_ogg_vorbis.c index c0f8c197d..4fdd1c411 100644 --- a/formats/format_ogg_vorbis.c +++ b/formats/format_ogg_vorbis.c @@ -181,10 +181,10 @@ static int ogg_vorbis_rewrite(struct ast_filestream *s, while (!tmp->eos) { if (ogg_stream_flush(&tmp->os, &tmp->og) == 0) break; - if (!fwrite(tmp->og.header, 1, tmp->og.header_len, s->f)) { + if (fwrite(tmp->og.header, 1, tmp->og.header_len, s->f) != tmp->og.header_len) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } - if (!fwrite(tmp->og.body, 1, tmp->og.body_len, s->f)) { + if (fwrite(tmp->og.body, 1, tmp->og.body_len, s->f) != tmp->og.body_len) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } if (ogg_page_eos(&tmp->og)) @@ -211,10 +211,10 @@ static void write_stream(struct ogg_vorbis_desc *s, FILE *f) if (ogg_stream_pageout(&s->os, &s->og) == 0) { break; } - if (!fwrite(s->og.header, 1, s->og.header_len, f)) { - ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); + if (fwrite(s->og.header, 1, s->og.header_len, f) != s->og.header_len) { + ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } - if (!fwrite(s->og.body, 1, s->og.body_len, f)) { + if (fwrite(s->og.body, 1, s->og.body_len, f) != s->og.body_len) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } if (ogg_page_eos(&s->og)) { diff --git a/formats/format_pcm.c b/formats/format_pcm.c index 97af0e9a3..f5ddda9c6 100644 --- a/formats/format_pcm.c +++ b/formats/format_pcm.c @@ -83,9 +83,17 @@ static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext) /* Send a frame from the file to the appropriate channel */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); - if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } s->fr.datalen = res; @@ -140,9 +148,10 @@ static int pcm_seek(struct ast_filestream *fs, off_t sample_offset, int whence) const char *src = (ast_format_cmp(fs->fmt->format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) ? alaw_silence : ulaw_silence; while (left) { - size_t written = fwrite(src, 1, (left > BUF_SIZE) ? BUF_SIZE : left, fs->f); - if (written == -1) + size_t written = fwrite(src, 1, MIN(left, BUF_SIZE), fs->f); + if (written < MIN(left, BUF_SIZE)) { break; /* error */ + } left -= written; } ret = 0; /* successful */ @@ -210,7 +219,10 @@ static int pcm_write(struct ast_filestream *fs, struct ast_frame *f) to_write = fpos - cur; if (to_write > sizeof(buf)) to_write = sizeof(buf); - fwrite(buf, 1, to_write, fs->f); + if (fwrite(buf, 1, to_write, fs->f) != to_write) { + ast_log(LOG_ERROR, "Failed to write to file: %s\n", strerror(errno)); + return -1; + } cur += to_write; } } diff --git a/formats/format_siren14.c b/formats/format_siren14.c index 1ce7d18ad..d54ed993b 100644 --- a/formats/format_siren14.c +++ b/formats/format_siren14.c @@ -45,8 +45,16 @@ static struct ast_frame *siren14read(struct ast_filestream *s, int *whennext) AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = BYTES_TO_SAMPLES(res); diff --git a/formats/format_siren7.c b/formats/format_siren7.c index d20598445..f3b4b42b3 100644 --- a/formats/format_siren7.c +++ b/formats/format_siren7.c @@ -45,8 +45,16 @@ static struct ast_frame *siren7read(struct ast_filestream *s, int *whennext) AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = BYTES_TO_SAMPLES(res); diff --git a/formats/format_sln.c b/formats/format_sln.c index af3f691c8..1977f7dc0 100644 --- a/formats/format_sln.c +++ b/formats/format_sln.c @@ -38,9 +38,17 @@ static struct ast_frame *generic_read(struct ast_filestream *s, int *whennext, u /* Send a frame from the file to the appropriate channel */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, buf_size); - if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = res/2; diff --git a/formats/format_vox.c b/formats/format_vox.c index 5a70c34b1..195714c6f 100644 --- a/formats/format_vox.c +++ b/formats/format_vox.c @@ -44,9 +44,17 @@ static struct ast_frame *vox_read(struct ast_filestream *s, int *whennext) /* Send a frame from the file to the appropriate channel */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); - if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } *whennext = s->fr.samples = res * 2; diff --git a/formats/format_wav.c b/formats/format_wav.c index 8316c3530..09e6a5313 100644 --- a/formats/format_wav.c +++ b/formats/format_wav.c @@ -361,7 +361,7 @@ static void wav_close(struct ast_filestream *s) /* Pad to even length */ if (fs->bytes & 0x1) { - if (!fwrite(&zero, 1, 1, s->f)) { + if (fwrite(&zero, 1, 1, s->f) != 1) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } } @@ -385,14 +385,23 @@ static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext) here = ftello(s->f); if (fs->maxlen - here < bytes) /* truncate if necessary */ bytes = fs->maxlen - here; - if (bytes < 0) - bytes = 0; + if (bytes <= 0) { + return NULL; + } /* ast_debug(1, "here: %d, maxlen: %d, bytes: %d\n", here, s->maxlen, bytes); */ AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, bytes); - - if ( (res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) <= 0 ) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + + if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) { + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } s->fr.datalen = res; diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c index eef06cef5..bfec903d0 100644 --- a/formats/format_wav_gsm.c +++ b/formats/format_wav_gsm.c @@ -422,8 +422,16 @@ static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext) int res; if ((res = fread(msdata, 1, MSGSM_FRAME_SIZE, s->f)) != MSGSM_FRAME_SIZE) { - if (res && (res != 1)) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); + if (feof(s->f)) { + if (res) { + ast_log(LOG_WARNING, "Incomplete frame data at end of %s file " + "(expected %d bytes, read %d)\n", + ast_format_get_name(s->fr.subclass.format), MSGSM_FRAME_SIZE, res); + } + } else { + ast_log(LOG_ERROR, "Error while reading %s file: %s\n", + ast_format_get_name(s->fr.subclass.format), strerror(errno)); + } return NULL; } /* Convert from MS format to two real GSM frames */ @@ -511,7 +519,7 @@ static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence) int i; fseek(fs->f, 0, SEEK_END); for (i=0; i< (offset - max) / MSGSM_FRAME_SIZE; i++) { - if (!fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f)) { + if (fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f) != MSGSM_FRAME_SIZE) { ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno)); } } -- cgit v1.2.3