From 345c5bde41fc1238a3f3b9b1a52e30ec7ab99b6e Mon Sep 17 00:00:00 2001 From: Brandon Maier Date: Wed, 2 Nov 2022 17:47:54 -0500 Subject: misc-utils: flashcp: simplify logging Most of the uses of log_printf fall into two styles > if (flags & FLAG_VERBOSE) > log_printf(LOG_NORMAL, ...); or > log_printf(LOG_ERROR, ...) > exit(EXIT_FAILURE); Replace them with log_verbose and log_failure respectively. Signed-off-by: Brandon Maier Signed-off-by: David Oberhollenzer --- misc-utils/flashcp.c | 173 +++++++++++++++++++++++---------------------------- 1 file changed, 77 insertions(+), 96 deletions(-) (limited to 'misc-utils') diff --git a/misc-utils/flashcp.c b/misc-utils/flashcp.c index 718c513..9e92fa2 100644 --- a/misc-utils/flashcp.c +++ b/misc-utils/flashcp.c @@ -48,7 +48,7 @@ /* for debugging purposes only */ #ifdef DEBUG #undef DEBUG -#define DEBUG(fmt,args...) { log_printf (LOG_ERROR,"%d: ",__LINE__); log_printf (LOG_ERROR,fmt,## args); } +#define DEBUG(fmt,args...) { fprintf (stderr,"%d: ",__LINE__); fprintf (stderr,fmt,## args); } #else #undef DEBUG #define DEBUG(fmt,args...) @@ -62,7 +62,6 @@ /* cmd-line flags */ #define FLAG_NONE 0x00 -#define FLAG_VERBOSE 0x01 #define FLAG_HELP 0x02 #define FLAG_FILENAME 0x04 #define FLAG_DEVICE 0x08 @@ -73,21 +72,34 @@ #define LOG_NORMAL 1 #define LOG_ERROR 2 -static void log_printf (int level,const char *fmt, ...) +static NORETURN void log_failure (const char *fmt, ...) { - FILE *fp = level == LOG_NORMAL ? stdout : stderr; va_list ap; va_start (ap,fmt); - vfprintf (fp,fmt,ap); + vfprintf (stderr,fmt,ap); va_end (ap); - fflush (fp); + fflush (stderr); + + exit (EXIT_FAILURE); } -static NORETURN void showusage(bool error) +static int verbose = 0; +static void log_verbose (const char *fmt, ...) { - int level = error ? LOG_ERROR : LOG_NORMAL; + va_list ap; - log_printf (level, + if (!verbose) + return; + + va_start (ap,fmt); + vfprintf (stdout,fmt,ap); + va_end (ap); + fflush (stdout); +} + +static NORETURN void showusage(bool error) +{ + fprintf (error ? stderr : stdout, "\n" "Flash Copy - Written by Abraham van der Merwe \n" "\n" @@ -110,44 +122,42 @@ static NORETURN void showusage(bool error) static int safe_open (const char *pathname,int flags) { + const char *access = "unknown"; int fd; fd = open (pathname,flags); if (fd < 0) { - log_printf (LOG_ERROR,"While trying to open %s",pathname); if (flags & O_RDWR) - log_printf (LOG_ERROR," for read/write access"); + access = "read/write"; else if (flags & O_RDONLY) - log_printf (LOG_ERROR," for read access"); + access = "read"; else if (flags & O_WRONLY) - log_printf (LOG_ERROR," for write access"); - log_printf (LOG_ERROR,": %m\n"); - exit (EXIT_FAILURE); + access = "write"; + + log_failure ("While trying to open %s for %s access: %m\n",pathname,access); } return (fd); } -static void safe_read (int fd,const char *filename,void *buf,size_t count,bool verbose) +static void safe_read (int fd,const char *filename,void *buf,size_t count) { ssize_t result; result = read (fd,buf,count); if (count != result) { - if (verbose) log_printf (LOG_NORMAL,"\n"); + log_verbose ("\n"); if (result < 0) { - log_printf (LOG_ERROR,"While reading data from %s: %m\n",filename); - exit (EXIT_FAILURE); + log_failure("While reading data from %s: %m\n",filename); } - log_printf (LOG_ERROR,"Short read count returned while reading from %s\n",filename); - exit (EXIT_FAILURE); + log_failure("Short read count returned while reading from %s\n",filename); } } -static void safe_write (int fd,const void *buf,size_t count,size_t written,unsigned long long to_write,const char *device,bool verbose) +static void safe_write (int fd,const void *buf,size_t count,size_t written,unsigned long long to_write,const char *device) { ssize_t result; @@ -155,18 +165,14 @@ static void safe_write (int fd,const void *buf,size_t count,size_t written,unsig result = write (fd,buf,count); if (count != result) { - if (verbose) log_printf (LOG_NORMAL,"\n"); + log_verbose ("\n"); if (result < 0) { - log_printf (LOG_ERROR, - "While writing data to 0x%.8lx-0x%.8lx on %s: %m\n", + log_failure("While writing data to 0x%.8lx-0x%.8lx on %s: %m\n", written,written + count,device); - exit (EXIT_FAILURE); } - log_printf (LOG_ERROR, - "Short write count returned while writing to x%.8zx-0x%.8zx on %s: %zu/%llu bytes written to flash\n", + log_failure("Short write count returned while writing to x%.8zx-0x%.8zx on %s: %zu/%llu bytes written to flash\n", written,written + count,device,written + result,to_write); - exit (EXIT_FAILURE); } } @@ -177,8 +183,7 @@ static off_t safe_lseek (int fd,off_t offset,int whence,const char *filename) off = lseek (fd,offset,whence); if (off < 0) { - log_printf (LOG_ERROR,"While seeking on %s: %m\n",filename); - exit (EXIT_FAILURE); + log_failure("While seeking on %s: %m\n",filename); } return off; @@ -189,15 +194,13 @@ static void safe_rewind (int fd,const char *filename) safe_lseek(fd,0L,SEEK_SET,filename); } -static void safe_memerase (int fd,const char *device,struct erase_info_user *erase,bool verbose) +static void safe_memerase (int fd,const char *device,struct erase_info_user *erase) { if (ioctl (fd,MEMERASE,erase) < 0) { - if (verbose) log_printf (LOG_NORMAL,"\n"); - log_printf (LOG_ERROR, - "While erasing blocks 0x%.8x-0x%.8x on %s: %m\n", + log_verbose ("\n"); + log_failure("While erasing blocks 0x%.8x-0x%.8x on %s: %m\n", (unsigned int) erase->start,(unsigned int) (erase->start + erase->length),device); - exit (EXIT_FAILURE); } } @@ -249,7 +252,7 @@ int main (int argc,char *argv[]) DEBUG("Got FLAG_HELP\n"); break; case 'v': - flags |= FLAG_VERBOSE; + verbose = 1; DEBUG("Got FLAG_VERBOSE\n"); break; case 'p': @@ -289,24 +292,17 @@ int main (int argc,char *argv[]) if (ioctl (dev_fd,MEMGETINFO,&mtd) < 0) { DEBUG("ioctl(): %m\n"); - log_printf (LOG_ERROR,"This doesn't seem to be a valid MTD flash device!\n"); - exit (EXIT_FAILURE); + log_failure("This doesn't seem to be a valid MTD flash device!\n"); } /* get some info about the file we want to copy */ fil_fd = safe_open (filename,O_RDONLY); if (fstat (fil_fd,&filestat) < 0) - { - log_printf (LOG_ERROR,"While trying to get the file status of %s: %m\n",filename); - exit (EXIT_FAILURE); - } + log_failure("While trying to get the file status of %s: %m\n",filename); /* does it fit into the device/partition? */ if (filestat.st_size > mtd.size) - { - log_printf (LOG_ERROR,"%s won't fit into %s!\n",filename,device); - exit (EXIT_FAILURE); - } + log_failure("%s won't fit into %s!\n",filename,device); /* diff block flashcp */ if (flags & FLAG_PARTITION) @@ -332,24 +328,24 @@ int main (int argc,char *argv[]) erase.length *= mtd.erasesize; } - if (flags & FLAG_VERBOSE) + if (verbose) { /* if the user wants verbose output, erase 1 block at a time and show him/her what's going on */ int blocks = erase.length / mtd.erasesize; erase.length = mtd.erasesize; - log_printf (LOG_NORMAL,"Erasing blocks: 0/%d (0%%)",blocks); + log_verbose ("Erasing blocks: 0/%d (0%%)",blocks); for (i = 1; i <= blocks; i++) { - log_printf (LOG_NORMAL,"\rErasing blocks: %d/%d (%d%%)",i,blocks,PERCENTAGE (i,blocks)); - safe_memerase(dev_fd,device,&erase,flags & FLAG_VERBOSE); + log_verbose ("\rErasing blocks: %d/%d (%d%%)",i,blocks,PERCENTAGE (i,blocks)); + safe_memerase(dev_fd,device,&erase); erase.start += mtd.erasesize; } - log_printf (LOG_NORMAL,"\rErasing blocks: %d/%d (100%%)\n",blocks,blocks); + log_verbose ("\rErasing blocks: %d/%d (100%%)\n",blocks,blocks); } else { /* if not, erase the whole chunk in one shot */ - safe_memerase(dev_fd,device,&erase,flags & FLAG_VERBOSE); + safe_memerase(dev_fd,device,&erase); } DEBUG("Erased %u / %luk bytes\n",erase.length,filestat.st_size); @@ -357,33 +353,30 @@ int main (int argc,char *argv[]) * write the entire file to flash * **********************************/ - if (flags & FLAG_VERBOSE) log_printf (LOG_NORMAL,"Writing data: 0k/%lluk (0%%)",KB ((unsigned long long)filestat.st_size)); + log_verbose ("Writing data: 0k/%lluk (0%%)",KB ((unsigned long long)filestat.st_size)); size = filestat.st_size; i = BUFSIZE; written = 0; while (size) { if (size < BUFSIZE) i = size; - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL,"\rWriting data: %dk/%lluk (%llu%%)", - KB (written + i), - KB ((unsigned long long)filestat.st_size), - PERCENTAGE (written + i,(unsigned long long)filestat.st_size)); + log_verbose ("\rWriting data: %dk/%lluk (%llu%%)", + KB (written + i), + KB ((unsigned long long)filestat.st_size), + PERCENTAGE (written + i,(unsigned long long)filestat.st_size)); /* read from filename */ - safe_read (fil_fd,filename,src,i,flags & FLAG_VERBOSE); + safe_read (fil_fd,filename,src,i); /* write to device */ - safe_write(dev_fd,src,i,written,(unsigned long long)filestat.st_size,device,flags & FLAG_VERBOSE); + safe_write(dev_fd,src,i,written,(unsigned long long)filestat.st_size,device); written += i; size -= i; } - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL, - "\rWriting data: %lluk/%lluk (100%%)\n", - KB ((unsigned long long)filestat.st_size), - KB ((unsigned long long)filestat.st_size)); + log_verbose ("\rWriting data: %lluk/%lluk (100%%)\n", + KB ((unsigned long long)filestat.st_size), + KB ((unsigned long long)filestat.st_size)); DEBUG("Wrote %d / %lluk bytes\n",written,(unsigned long long)filestat.st_size); /********************************** @@ -395,40 +388,32 @@ int main (int argc,char *argv[]) size = filestat.st_size; i = BUFSIZE; written = 0; - if (flags & FLAG_VERBOSE) log_printf (LOG_NORMAL,"Verifying data: 0k/%lluk (0%%)",KB ((unsigned long long)filestat.st_size)); + log_verbose ("Verifying data: 0k/%lluk (0%%)",KB ((unsigned long long)filestat.st_size)); while (size) { if (size < BUFSIZE) i = size; - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL, - "\rVerifying data: %luk/%lluk (%llu%%)", - KB (written + i), - KB ((unsigned long long)filestat.st_size), - PERCENTAGE (written + i,(unsigned long long)filestat.st_size)); + log_verbose ("\rVerifying data: %luk/%lluk (%llu%%)", + KB (written + i), + KB ((unsigned long long)filestat.st_size), + PERCENTAGE (written + i,(unsigned long long)filestat.st_size)); /* read from filename */ - safe_read (fil_fd,filename,src,i,flags & FLAG_VERBOSE); + safe_read (fil_fd,filename,src,i); /* read from device */ - safe_read (dev_fd,device,dest,i,flags & FLAG_VERBOSE); + safe_read (dev_fd,device,dest,i); /* compare buffers */ if (memcmp (src,dest,i)) - { - log_printf (LOG_ERROR, - "File does not seem to match flash data. First mismatch at 0x%.8zx-0x%.8zx\n", + log_failure("File does not seem to match flash data. First mismatch at 0x%.8zx-0x%.8zx\n", written,written + i); - exit (EXIT_FAILURE); - } written += i; size -= i; } - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL, - "\rVerifying data: %lluk/%lluk (100%%)\n", - KB ((unsigned long long)filestat.st_size), - KB ((unsigned long long)filestat.st_size)); + log_verbose ("\rVerifying data: %lluk/%lluk (100%%)\n", + KB ((unsigned long long)filestat.st_size), + KB ((unsigned long long)filestat.st_size)); DEBUG("Verified %d / %lluk bytes\n",written,(unsigned long long)filestat.st_size); exit (EXIT_SUCCESS); @@ -450,22 +435,18 @@ DIFF_BLOCKS: int blocks = erase.length / mtd.erasesize; erase.length = mtd.erasesize; - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL, - "\rProcessing blocks: 0/%d (%d%%)", blocks, PERCENTAGE (0,blocks)); + log_verbose ("\rProcessing blocks: 0/%d (%d%%)", blocks, PERCENTAGE (0,blocks)); for (int s = 1; s <= blocks; s++) { if (size < mtd.erasesize) i = size; - if (flags & FLAG_VERBOSE) - log_printf (LOG_NORMAL, - "\rProcessing blocks: %d/%d (%d%%)", s, blocks, PERCENTAGE (s,blocks)); + log_verbose ("\rProcessing blocks: %d/%d (%d%%)", s, blocks, PERCENTAGE (s,blocks)); /* read from filename */ - safe_read (fil_fd,filename,src,i,flags & FLAG_VERBOSE); + safe_read (fil_fd,filename,src,i); /* read from device */ current_dev_block = safe_lseek(dev_fd, 0, SEEK_CUR, device); - safe_read (dev_fd,device,dest,i,flags & FLAG_VERBOSE); + safe_read (dev_fd,device,dest,i); /* compare buffers, if not the same, erase and write the block */ if (memcmp (src,dest,i)) @@ -473,11 +454,11 @@ DIFF_BLOCKS: diffBlock++; /* erase block */ safe_lseek(dev_fd, current_dev_block, SEEK_SET, device); - safe_memerase(dev_fd,device,&erase,flags & FLAG_VERBOSE); + safe_memerase(dev_fd,device,&erase); /* write to device */ safe_lseek(dev_fd, current_dev_block, SEEK_SET, device); - safe_write(dev_fd,src,i,written,(unsigned long long)filestat.st_size,device,flags & FLAG_VERBOSE); + safe_write(dev_fd,src,i,written,(unsigned long long)filestat.st_size,device); } erase.start += i; @@ -485,7 +466,7 @@ DIFF_BLOCKS: size -= i; } - if (flags & FLAG_VERBOSE) log_printf (LOG_NORMAL, "\ndiff blocks: %d\n", diffBlock); + log_verbose ("\ndiff blocks: %d\n", diffBlock); exit (EXIT_SUCCESS); } -- cgit v1.2.3